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arm/rp2040: Add support for Waveshare RP2040 Zero board

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This change adds a few simple configurations for the Waveshare RP2040 Zero board, along with accompanying documentation.
This commit is contained in:
Henry Rovner 2024-10-14 16:03:43 -07:00 committed by Xiang Xiao
parent bbf2bbf37d
commit f22685fb69
22 changed files with 1884 additions and 0 deletions
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Documentation/platforms/arm/rp2040/boards/waveshare-rp2040-zero/WaveshareRP2040Zero.png Normal file
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Documentation/platforms/arm/rp2040/boards/waveshare-rp2040-zero/index.rst Normal file
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===============================
Waveshare RP2040 Zero
===============================
The `Waveshare RP2040 Zero <https://www.waveshare.com/wiki/RP2040-Zero>`_ is a general purpose board supplied by
Waveshare.
.. figure:: WaveshareRP2040Zero.png
:align: center
Features
========
* RP2040 microcontroller chip
* Dual-core ARM Cortex M0+ processor, flexible clock running up to 133 MHz
* 264kB of SRAM, and 2MB of on-board Flash memory
* Castellated module allows soldering direct to carrier boards
* USB 1.1 Host and Device support
* Low-power sleep and dormant modes
* Drag & drop programming using mass storage over USB
* 20 multi-function GPIO pins
* 2× SPI, 2× I2C, 2× UART, 3× 12-bit ADC, 16× controllable PWM channels
* Accurate clock and timer on-chip
* Temperature sensor
* Accelerated floating point libraries on-chip
* 8 × Programmable IO (PIO) state machines for custom peripheral support
Serial Console
==============
By default a serial console appears on pins 23 (TX GPIO0) and pin 22
(RX GPIO1). This console runs a 115200-8N1.
The board can be configured to use the USB connection as the serial console.
Buttons and LEDs
================
A ws2812 (NeoPixel) smart RGB LED controlled by GPIO16 (data).
There is a BOOT button which if held down when power is first
applied or the RESET button is pressed will cause the RP2040 to
boot into program mode and appear as a storage device to
a USB connecter. Saving a .UF2 file to this device will
replace the Flash ROM contents on the RP2040.
Pin Mapping
===========
Pads numbered anticlockwise from USB connector.
===== ========== ==========
Pad Signal Notes
===== ========== ==========
1 5V
2 Ground
3 3.3V
4 GPIO29
5 GPIO28
6 GPIO27
7 GPIO26
8 GPIO15
9 GPIO14
10 GPIO13
11 GPIO12
12 GPIO11 Default TX for SPI1
13 GPIO10 Default SCK for SPI1
14 GPIO9 Default CSn for SPI1
15 GPIO8 Default RX for SPI1
16 GPIO7 Default SCL for I2C1
17 GPIO6 Default SDA for I2C1
18 GPIO5 Default SCL for I2C0
19 GPIO4 Default SDA for I2C0
20 GPIO3
21 GPIO2
22 GPIO1 Default RX for UART0 serial console
23 GPIO0 Default TX for UART0 serial console
===== ========== ==========
Power Supply
============
The Waveshare RP2040 Zero can be powered via the USB connector,
or by supplying +5V to pin 1.
The RP2040 runs on 3.3 volts. This is supplied
by an onboard voltage regulator.
Supported Capabilities
======================
NuttX supports the following RP2040 capabilities:
* UART (console port)
* GPIO 0 (UART0 TX) and GPIO 1 (UART0 RX) are used for the console.
* I2C
* SPI (master only)
* DMAC
* PWM
* ADC
* Watchdog
* USB device
* MSC, CDC/ACM serial and these composite device are supported.
* CDC/ACM serial device can be used for the console.
* PIO (RP2040 Programmable I/O)
* Flash ROM Boot
* SRAM Boot
* If Pico SDK is available, nuttx.uf2 file which can be used in BOOTSEL mode will be created.
* Persistent flash filesystem in unused flash ROM
* WiFi wireless communication
There is currently no direct user mode access to these RP2040 hardware features:
* SPI Slave Mode
* SSI
* RTC
* Timers
NuttX also provide support for these external devices:
* BMP180 sensor at I2C0 (don't forget to define I2C0 GPIOs at "I2C0 GPIO pin assign" in Board Selection menu)
* INA219 sensor / module (don't forget to define I2C0 GPIOs at "I2C0 GPIO pin assign" in Board Selection menu)
* SHT4X sensor at I2C0
* Pico Display Pack (ST7789 LCD)
* RGB leds and buttons are not supported yet.
* Pico Audio Pack (PCM5100A I2S DAC)
* I2S interface is realized by PIO.
* WS2812 smart pixel support
Installation
============
1. Download Raspberry Pi Pico SDK
.. code-block:: console
$ git clone -b 2.0.0 https://github.com/raspberrypi/pico-sdk.git
2. Download and install picotool
Instructions can be found here: https://github.com/raspberrypi/picotool
If you are on Arch Linux, you can install the picotool through the AUR:
.. code-block:: console
$ yay -S picotool
3. Set PICO_SDK_PATH environment variable
.. code-block:: console
$ export PICO_SDK_PATH=<absolute_path_to_pico-sdk_directory>
4. Configure and build NuttX
.. code-block:: console
$ git clone https://github.com/apache/nuttx.git nuttx
$ git clone https://github.com/apache/nuttx-apps.git apps
$ cd nuttx
$ make distclean
$ ./tools/configure.sh waveshare-rp2040-zero:nsh
$ make V=1
5. Connect Raspberry Pi Pico board to USB port while pressing BOOTSEL.
The board will be detected as USB Mass Storage Device.
Then copy "nuttx.uf2" into the device.
(Same manner as the standard Pico SDK applications installation.)
6. To access the console, GPIO 0 and 1 pins must be connected to the
device such as USB-serial converter.
`usbnsh` configuration provides the console access by USB CDC/ACM serial
device. The console is available by using a terminal software on the USB
host.
Configurations
==============
gpio
--------
NuttShell configuration (console enabled in UART0, at 115200 bps) with GPIO examples.
nsh
---
Basic NuttShell configuration (console enabled in UART0, at 115200 bps).
usbnsh
------
Basic NuttShell configuration using CDC/ACM serial (console enabled in USB Port,
at 115200 bps).
ws2812
------
Basic NuttShell configuration with WS2812 driver and example enabled. Console is enabled over USB at 115200 bps.
License exceptions
==================
The following files are originated from the files in Pico SDK.
So, the files are licensed under 3-Clause BSD same as Pico SDK.
* arch/arm/src/rp2040/rp2040_clock.c
* arch/arm/src/rp2040/rp2040_pll.c
* arch/arm/src/rp2040/rp2040_xosc.c
* These are created by referring the Pico SDK clock initialization.
* arch/arm/src/rp2040/rp2040_pio.c
* arch/arm/src/rp2040/rp2040_pio.h
* arch/arm/src/rp2040/rp2040_pio_instructions.h
* These provide the similar APIs to Pico SDK's hardware_pio APIs.
* arch/arm/src/rp2040/hardware/\*.h
* These are generated from rp2040.svd originally provided in Pico SDK.

11
boards/Kconfig
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@ -1967,6 +1967,13 @@ config ARCH_BOARD_W5500_EVB_PICO
This is a port to the WIZnet W5500-EVB-Pico board.
Support is derived from Raspberry Pi Pico support.
config ARCH_BOARD_WAVESHARE_RP2040_ZERO
bool "Waveshare RP2040 Zero board"
depends on ARCH_CHIP_RP2040
---help---
This is a port to the Waveshare RP2040 Zero board.
Support is derived from Raspberry Pi Pico support.
config ARCH_BOARD_RX65N
bool "RX65N renesas board"
depends on ARCH_CHIP_R5F565NEDDFC
@ -3445,6 +3452,7 @@ config ARCH_BOARD
default "adafruit-qt-py-rp2040" if ARCH_BOARD_ADAFRUIT_QT_PY_RP2040
default "waveshare-rp2040-lcd-1.28" if ARCH_BOARD_WAVESHARE_RP2040_LCD_1_28
default "w5500-evb-pico" if ARCH_BOARD_W5500_EVB_PICO
default "waveshare-rp2040-zero" if ARCH_BOARD_WAVESHARE_RP2040_ZERO
default "rx65n" if ARCH_BOARD_RX65N
default "rx65n-rsk1mb" if ARCH_BOARD_RX65N_RSK1MB
default "rx65n-rsk2mb" if ARCH_BOARD_RX65N_RSK2MB
@ -3906,6 +3914,9 @@ endif
if ARCH_BOARD_ADAFRUIT_QT_PY_RP2040
source "boards/arm/rp2040/adafruit-qt-py-rp2040/Kconfig"
endif
if ARCH_BOARD_WAVESHARE_RP2040_ZERO
source "boards/arm/rp2040/waveshare-rp2040-zero/Kconfig"
endif
if ARCH_BOARD_ARDUINO_DUE
source "boards/arm/sam34/arduino-due/Kconfig"
endif

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boards/arm/rp2040/waveshare-rp2040-zero/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
if ARCH_BOARD_WAVESHARE_RP2040_ZERO
endif

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boards/arm/rp2040/waveshare-rp2040-zero/configs/gpio/defconfig Normal file
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#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_DEV_CONSOLE is not set
# CONFIG_LIBC_LONG_LONG is not set
# CONFIG_NSH_ARGCAT is not set
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
# CONFIG_NSH_DISABLE_DATE is not set
# CONFIG_NSH_DISABLE_LOSMART is not set
# CONFIG_RP2040_UART0 is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="waveshare-rp2040-zero"
CONFIG_ARCH_BOARD_WAVESHARE_RP2040_ZERO=y
CONFIG_ARCH_CHIP="rp2040"
CONFIG_ARCH_CHIP_RP2040=y
CONFIG_ARCH_RAMVECTORS=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARDCTL_RESET=y
CONFIG_BOARD_LOOPSPERMSEC=10450
CONFIG_BUILTIN=y
CONFIG_CDCACM=y
CONFIG_CDCACM_CONSOLE=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_DEV_GPIO=y
CONFIG_DISABLE_POSIX_TIMERS=y
CONFIG_EXAMPLES_GPIO=y
CONFIG_EXAMPLES_HELLO=y
CONFIG_FS_PROCFS=y
CONFIG_FS_PROCFS_REGISTER=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_READLINE=y
CONFIG_NSH_USBCONSOLE=y
CONFIG_RAM_SIZE=270336
CONFIG_RAM_START=0x20000000
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=9
CONFIG_START_MONTH=2
CONFIG_START_YEAR=2021
CONFIG_SYSTEM_NSH=y
CONFIG_TESTING_GETPRIME=y
CONFIG_TESTING_OSTEST=y
CONFIG_USBDEV=y
CONFIG_USBDEV_BUSPOWERED=y

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boards/arm/rp2040/waveshare-rp2040-zero/configs/nsh/defconfig Normal file
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@ -0,0 +1,47 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_LIBC_LONG_LONG is not set
# CONFIG_NSH_ARGCAT is not set
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
# CONFIG_NSH_DISABLE_DATE is not set
# CONFIG_NSH_DISABLE_LOSMART is not set
# CONFIG_STANDARD_SERIAL is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="waveshare-rp2040-zero"
CONFIG_ARCH_BOARD_WAVESHARE_RP2040_ZERO=y
CONFIG_ARCH_CHIP="rp2040"
CONFIG_ARCH_CHIP_RP2040=y
CONFIG_ARCH_RAMVECTORS=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARDCTL_RESET=y
CONFIG_BOARD_LOOPSPERMSEC=10450
CONFIG_BUILTIN=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_DISABLE_POSIX_TIMERS=y
CONFIG_EXAMPLES_HELLO=y
CONFIG_FS_PROCFS=y
CONFIG_FS_PROCFS_REGISTER=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_READLINE=y
CONFIG_RAM_SIZE=270336
CONFIG_RAM_START=0x20000000
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=9
CONFIG_START_MONTH=2
CONFIG_START_YEAR=2021
CONFIG_SYSLOG_CONSOLE=y
CONFIG_SYSTEM_NSH=y
CONFIG_TESTING_GETPRIME=y
CONFIG_TESTING_OSTEST=y
CONFIG_UART0_SERIAL_CONSOLE=y

51
boards/arm/rp2040/waveshare-rp2040-zero/configs/usbnsh/defconfig Normal file
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@ -0,0 +1,51 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
# CONFIG_DEV_CONSOLE is not set
# CONFIG_LIBC_LONG_LONG is not set
# CONFIG_NSH_ARGCAT is not set
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
# CONFIG_NSH_DISABLE_DATE is not set
# CONFIG_NSH_DISABLE_LOSMART is not set
# CONFIG_RP2040_UART0 is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="waveshare-rp2040-zero"
CONFIG_ARCH_BOARD_WAVESHARE_RP2040_ZERO=y
CONFIG_ARCH_CHIP="rp2040"
CONFIG_ARCH_CHIP_RP2040=y
CONFIG_ARCH_RAMVECTORS=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARDCTL_RESET=y
CONFIG_BOARD_LOOPSPERMSEC=10450
CONFIG_BUILTIN=y
CONFIG_CDCACM=y
CONFIG_CDCACM_CONSOLE=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_DISABLE_POSIX_TIMERS=y
CONFIG_EXAMPLES_HELLO=y
CONFIG_FS_PROCFS=y
CONFIG_FS_PROCFS_REGISTER=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_READLINE=y
CONFIG_NSH_USBCONSOLE=y
CONFIG_RAM_SIZE=270336
CONFIG_RAM_START=0x20000000
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=9
CONFIG_START_MONTH=2
CONFIG_START_YEAR=2021
CONFIG_SYSTEM_NSH=y
CONFIG_TESTING_GETPRIME=y
CONFIG_TESTING_OSTEST=y
CONFIG_USBDEV=y
CONFIG_USBDEV_BUSPOWERED=y

48
boards/arm/rp2040/waveshare-rp2040-zero/configs/ws2812/defconfig Normal file
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@ -0,0 +1,48 @@
#
# This file is autogenerated: PLEASE DO NOT EDIT IT.
#
# You can use "make menuconfig" to make any modifications to the installed .config file.
# You can then do "make savedefconfig" to generate a new defconfig file that includes your
# modifications.
#
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="waveshare-rp2040-zero"
CONFIG_ARCH_BOARD_WAVESHARE_RP2040_ZERO=y
CONFIG_ARCH_CHIP="rp2040"
CONFIG_ARCH_CHIP_RP2040=y
CONFIG_ARCH_RAMVECTORS=y
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARDCTL_RESET=y
CONFIG_BOARD_LOOPSPERMSEC=10450
CONFIG_BUILTIN=y
CONFIG_CDCACM=y
CONFIG_CDCACM_CONSOLE=y
CONFIG_DEBUG_FULLOPT=y
CONFIG_DEBUG_SYMBOLS=y
CONFIG_DISABLE_POSIX_TIMERS=y
CONFIG_EXAMPLES_HELLO=y
CONFIG_EXAMPLES_WS2812=y
CONFIG_FS_PROCFS=y
CONFIG_FS_PROCFS_REGISTER=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_NFILE_DESCRIPTORS_PER_BLOCK=6
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_READLINE=y
CONFIG_NSH_USBCONSOLE=y
CONFIG_RAM_SIZE=270336
CONFIG_RAM_START=0x20000000
CONFIG_READLINE_CMD_HISTORY=y
CONFIG_RP2040_BOARD_HAS_WS2812=y
CONFIG_RP2040_WS2812_GPIO_PIN=16
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=9
CONFIG_START_MONTH=2
CONFIG_START_YEAR=2021
CONFIG_SYSTEM_NSH=y
CONFIG_TESTING_GETPRIME=y
CONFIG_TESTING_OSTEST=y
CONFIG_USBDEV=y
CONFIG_USBDEV_BUSPOWERED=y
CONFIG_WS2812=y

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boards/arm/rp2040/waveshare-rp2040-zero/include/board.h Normal file
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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/include/board.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_BOARD_H
#define __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_BOARD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include "rp2040_i2cdev.h"
#include "rp2040_spidev.h"
#include "rp2040_i2sdev.h"
#include "rp2040_spisd.h"
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Clocking *****************************************************************/
#define MHZ 1000000
#define BOARD_XOSC_FREQ (12 * MHZ)
#define BOARD_PLL_SYS_FREQ (125 * MHZ)
#define BOARD_PLL_USB_FREQ (48 * MHZ)
#define BOARD_REF_FREQ (12 * MHZ)
#define BOARD_SYS_FREQ (125 * MHZ)
#define BOARD_PERI_FREQ (125 * MHZ)
#define BOARD_USB_FREQ (48 * MHZ)
#define BOARD_ADC_FREQ (48 * MHZ)
#define BOARD_RTC_FREQ 46875
#define BOARD_UART_BASEFREQ BOARD_PERI_FREQ
#define BOARD_TICK_CLOCK (1 * MHZ)
/* GPIO definitions *********************************************************/
#define BOARD_GPIO_LED_PIN_B 25
#define BOARD_GPIO_LED_PIN_R 17
#define BOARD_GPIO_LED_PIN_G 16
#define BOARD_NGPIOOUT 3
#define BOARD_NGPIOIN 1
#define BOARD_NGPIOINT 1
/* LED definitions **********************************************************/
/* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs
* in any way. The following definitions are used to access individual LEDs.
*/
/* LED index values for use with board_userled() */
#define BOARD_LED1 0
#define BOARD_LED2 1
#define BOARD_LED3 2
#define BOARD_NLEDS 3
#define BOARD_LED_BLUE BOARD_LED1
#define BOARD_LED_RED BOARD_LED2
#define BOARD_LED_GREEN BOARD_LED3
/* LED bits for use with board_userled_all() */
#define BOARD_LED1_BIT (1 << BOARD_LED1)
#define BOARD_LED2_BIT (1 << BOARD_LED2)
#define BOARD_LED3_BIT (1 << BOARD_LED3)
/* This LED is not used by the board port unless CONFIG_ARCH_LEDS is
* defined. In that case, the usage by the board port is defined in
* include/board.h and src/rp2040_autoleds.c. The LED is used to encode
* OS-related events as follows:
*
* -------------------- ----------------------------- ------
* SYMBOL Meaning LED
* -------------------- ----------------------------- ------
*/
#define LED_STARTED 0 /* NuttX has been started OFF */
#define LED_HEAPALLOCATE 0 /* Heap has been allocated OFF */
#define LED_IRQSENABLED 0 /* Interrupts enabled OFF */
#define LED_STACKCREATED 1 /* Idle stack created ON */
#define LED_INIRQ 2 /* In an interrupt N/C */
#define LED_SIGNAL 2 /* In a signal handler N/C */
#define LED_ASSERTION 2 /* An assertion failed N/C */
#define LED_PANIC 3 /* The system has crashed FLASH */
#undef LED_IDLE /* Not used */
/* Thus if the LED is statically on, NuttX has successfully booted and is,
* apparently, running normally. If the LED is flashing at approximately
* 2Hz, then a fatal error has been detected and the system has halted.
*/
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: rp2040_boardearlyinitialize
*
* Description:
*
****************************************************************************/
void rp2040_boardearlyinitialize(void);
/****************************************************************************
* Name: rp2040_boardinitialize
*
* Description:
*
****************************************************************************/
void rp2040_boardinitialize(void);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_BOARD_H */

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@ -0,0 +1,72 @@
/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/include/rp2040_i2cdev.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_I2CDEV_H
#define __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_I2CDEV_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_i2cdev_initialize
*
* Description:
* Initialize i2c driver and register the /dev/i2c device.
*
****************************************************************************/
#ifdef CONFIG_RP2040_I2C_DRIVER
int board_i2cdev_initialize(int bus);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_I2CDEV_H */

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@ -0,0 +1,72 @@
/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/include/rp2040_i2sdev.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_I2SDEV_H
#define __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_I2SDEV_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_i2sdev_initialize
*
* Description:
* Initialize i2s driver and register the /dev/audio/pcm0 device.
*
****************************************************************************/
#ifdef CONFIG_RP2040_I2S
int board_i2sdev_initialize(int bus);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_I2SDEV_H */

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/include/rp2040_spidev.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_SPIDEV_H
#define __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_SPIDEV_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_spidev_initialize
*
* Description:
* Initialize spi driver and register the /dev/spi device.
*
****************************************************************************/
int board_spidev_initialize(int bus);
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_SPIDEV_H */

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/include/rp2040_spisd.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_SPISD_H
#define __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_SPISD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
/****************************************************************************
* Public Types
****************************************************************************/
#ifndef __ASSEMBLY__
/****************************************************************************
* Public Data
****************************************************************************/
#undef EXTERN
#if defined(__cplusplus)
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
/****************************************************************************
* Name: board_spisd_initialize
*
* Description:
* Initialize the SPI-based SD card.
*
****************************************************************************/
#ifdef CONFIG_RP2040_SPISD
int board_spisd_initialize(int minor, int bus);
#endif
/****************************************************************************
* Name: board_spisd_status
*
* Description:
* Get the status whether SD Card is present or not.
*
****************************************************************************/
#ifdef CONFIG_RP2040_SPISD
uint8_t board_spisd_status(struct spi_dev_s *dev, uint32_t devid);
#endif
#undef EXTERN
#if defined(__cplusplus)
}
#endif
#endif /* __ASSEMBLY__ */
#endif /* __BOARDS_ARM_WAVESHARE_RP2040_ZERO_INCLUDE_RP2040_SPISD_H */

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############################################################################
# boards/arm/rp2040/waveshare-rp2040-zero/scripts/Make.defs
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
include $(TOPDIR)/.config
include $(TOPDIR)/tools/Config.mk
include $(TOPDIR)/tools/rp2040/Config.mk
include $(TOPDIR)/arch/arm/src/armv6-m/Toolchain.defs
ifeq ($(CONFIG_RP2040_FLASH_BOOT),y)
LDSCRIPT = waveshare-rp2040-zero-flash.ld
else
LDSCRIPT = waveshare-rp2040-zero-sram.ld
endif
ARCHSCRIPT += $(BOARD_DIR)$(DELIM)scripts$(DELIM)$(LDSCRIPT)
ARCHPICFLAGS = -fpic -msingle-pic-base -mpic-register=r10
CFLAGS := $(ARCHCFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
CPICFLAGS = $(ARCHPICFLAGS) $(CFLAGS)
CXXFLAGS := $(ARCHCXXFLAGS) $(ARCHOPTIMIZATION) $(ARCHCPUFLAGS) $(ARCHXXINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS) -pipe
CXXPICFLAGS = $(ARCHPICFLAGS) $(CXXFLAGS)
CPPFLAGS := $(ARCHINCLUDES) $(ARCHDEFINES) $(EXTRAFLAGS)
AFLAGS := $(CFLAGS) -D__ASSEMBLY__
NXFLATLDFLAGS1 = -r -d -warn-common
NXFLATLDFLAGS2 = $(NXFLATLDFLAGS1) -T$(TOPDIR)/binfmt/libnxflat/gnu-nxflat-pcrel.ld -no-check-sections
LDNXFLATFLAGS = -e main -s 2048

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/scripts/waveshare-rp2040-zero-flash.ld
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
MEMORY
{
flash (rx) : ORIGIN = 0x10000000, LENGTH = 2048K
sram (rwx) : ORIGIN = 0x20000000, LENGTH = 264K
}
OUTPUT_ARCH(arm)
EXTERN(_vectors)
ENTRY(_stext)
SECTIONS
{
.flash_begin : {
__flash_binary_start = .;
} > flash
.boot2 : {
__boot2_start__ = .;
KEEP (*(.boot2))
__boot2_end__ = .;
} > flash
.text : {
_stext = ABSOLUTE(.);
*(.vectors)
*(.text .text.*)
*(.fixup)
*(.gnu.warning)
*(.rodata .rodata.*)
*(.gnu.linkonce.t.*)
*(.glue_7)
*(.glue_7t)
*(.got)
*(.gcc_except_table)
*(.gnu.linkonce.r.*)
_etext = ABSOLUTE(.);
} > flash
.init_section : {
_sinit = ABSOLUTE(.);
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP(*(.init_array .ctors))
_einit = ABSOLUTE(.);
} > flash
.ARM.extab : {
*(.ARM.extab*)
} > flash
__exidx_start = ABSOLUTE(.);
.ARM.exidx : {
*(.ARM.exidx*)
} > flash
__exidx_end = ABSOLUTE(.);
_eronly = ABSOLUTE(.);
.ram_vectors (COPY) : {
*(.ram_vectors)
} > sram
.data : {
_sdata = ABSOLUTE(.);
*(.data .data.*)
*(.gnu.linkonce.d.*)
*(.ram_code.*)
CONSTRUCTORS
. = ALIGN(4);
_edata = ABSOLUTE(.);
} > sram AT > flash
.flash_section : {
. = ALIGN(4*1024);
*(.flash.*)
} > flash
.bss : {
_sbss = ABSOLUTE(.);
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
_ebss = ABSOLUTE(.);
} > sram
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_info 0 : { *(.debug_info) }
.debug_line 0 : { *(.debug_line) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_aranges 0 : { *(.debug_aranges) }
}

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/scripts/waveshare-rp2040-zero-sram.ld
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
MEMORY
{
flash (rx) : ORIGIN = 0x10000000, LENGTH = 2048K
sram (rwx) : ORIGIN = 0x20000000, LENGTH = 264K
}
OUTPUT_ARCH(arm)
EXTERN(_vectors)
ENTRY(_stext)
SECTIONS
{
.text : {
_stext = ABSOLUTE(.);
rp2040_start.o(.text)
. = ALIGN(256);
*(.vectors)
*(.text .text.*)
*(.fixup)
*(.gnu.warning)
*(.rodata .rodata.*)
*(.gnu.linkonce.t.*)
*(.glue_7)
*(.glue_7t)
*(.got)
*(.gcc_except_table)
*(.gnu.linkonce.r.*)
_etext = ABSOLUTE(.);
} > sram
.init_section : {
_sinit = ABSOLUTE(.);
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*) SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP(*(.init_array .ctors))
_einit = ABSOLUTE(.);
} > sram
.ARM.extab : {
*(.ARM.extab*)
} > sram
__exidx_start = ABSOLUTE(.);
.ARM.exidx : {
*(.ARM.exidx*)
} > sram
__exidx_end = ABSOLUTE(.);
.data : {
_sdata = ABSOLUTE(.);
*(.data .data.*)
*(.gnu.linkonce.d.*)
*(.ram_code.*)
CONSTRUCTORS
. = ALIGN(4);
_edata = ABSOLUTE(.);
} > sram
.flash_section : {
. = ALIGN(4*1024);
*(.flash.*)
} > flash
.bss : {
_sbss = ABSOLUTE(.);
*(.bss .bss.*)
*(.gnu.linkonce.b.*)
*(COMMON)
. = ALIGN(4);
_ebss = ABSOLUTE(.);
} > sram
/* Stabs debugging sections. */
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.comment 0 : { *(.comment) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_info 0 : { *(.debug_info) }
.debug_line 0 : { *(.debug_line) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_aranges 0 : { *(.debug_aranges) }
}

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############################################################################
# boards/arm/rp2040/waveshare-rp2040-zero/src/Make.defs
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
include $(TOPDIR)/Make.defs
CSRCS = rp2040_boardinitialize.c
CSRCS += rp2040_appinit.c
CSRCS += rp2040_bringup.c
ifeq ($(CONFIG_DEV_GPIO),y)
CSRCS += rp2040_gpio.c
endif
DEPPATH += --dep-path board
VPATH += :board
CFLAGS += ${INCDIR_PREFIX}$(TOPDIR)$(DELIM)arch$(DELIM)$(CONFIG_ARCH)$(DELIM)src$(DELIM)board$(DELIM)board

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/src/rp2040_appinit.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/board.h>
#include <sys/types.h>
#include "rp2040_pico.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_app_initialize
*
* Description:
* Perform application specific initialization. This function is never
* called directly from application code, but only indirectly via the
* (non-standard) boardctl() interface using the command BOARDIOC_INIT.
*
* Input Parameters:
* arg - The boardctl() argument is passed to the board_app_initialize()
* implementation without modification. The argument has no
* meaning to NuttX; the meaning of the argument is a contract
* between the board-specific initialization logic and the
* matching application logic. The value could be such things as a
* mode enumeration value, a set of DIP switch switch settings, a
* pointer to configuration data read from a file or serial FLASH,
* or whatever you would like to do with it. Every implementation
* should accept zero/NULL as a default configuration.
*
* Returned Value:
* Zero (OK) is returned on success; a negated errno value is returned on
* any failure to indicate the nature of the failure.
*
****************************************************************************/
int board_app_initialize(uintptr_t arg)
{
#ifdef CONFIG_BOARD_LATE_INITIALIZE
/* Board initialization already performed by board_late_initialize() */
return OK;
#else
/* Perform board-specific initialization */
return rp2040_bringup();
#endif
}
/****************************************************************************
* Name: board_late_initialize
*
* Description:
* If CONFIG_BOARD_LATE_INITIALIZE is selected, then an additional
* initialization call will be performed in the boot-up sequence to a
* function called board_late_initialize(). board_late_initialize() will
* be called after up_initialize() and board_early_initialize() and just
* before the initial application is started. This additional
* initialization phase may be used, for example, to initialize board-
* specific device drivers for which board_early_initialize() is not
* suitable.
*
* Waiting for events, use of I2C, SPI, etc are permissible in the context
* of board_late_initialize(). That is because board_late_initialize()
* will run on a temporary, internal kernel thread.
*
****************************************************************************/
void board_late_initialize(void)
{
rp2040_bringup();
}

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/src/rp2040_boardinitialize.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "arm_internal.h"
#include "rp2040_gpio.h"
#ifdef CONFIG_ARCH_BOARD_COMMON
#include "rp2040_common_initialize.h"
#endif /* CONFIG_ARCH_BOARD_COMMON */
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rp2040_boardearlyinitialize
*
* Description:
*
****************************************************************************/
void rp2040_boardearlyinitialize(void)
{
#ifdef CONFIG_ARCH_BOARD_COMMON
rp2040_common_earlyinitialize();
#endif
/* --- Place any board specific early initialization here --- */
}
/****************************************************************************
* Name: rp2040_boardinitialize
*
* Description:
*
****************************************************************************/
void rp2040_boardinitialize(void)
{
#ifdef CONFIG_ARCH_BOARD_COMMON
rp2040_common_initialize();
#endif
/* --- Place any board specific initialization here --- */
}

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/src/rp2040_bringup.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <stddef.h>
#ifdef CONFIG_ARCH_BOARD_COMMON
#include "rp2040_common_bringup.h"
#endif /* CONFIG_ARCH_BOARD_COMMON */
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rp2040_bringup
****************************************************************************/
int rp2040_bringup(void)
{
#ifdef CONFIG_ARCH_BOARD_COMMON
int ret = rp2040_common_bringup();
if (ret < 0)
{
return ret;
}
#endif /* CONFIG_ARCH_BOARD_COMMON */
/* --- Place any board specific bringup code here --- */
return OK;
}

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/src/rp2040_gpio.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <syslog.h>
#include <nuttx/irq.h>
#include <arch/irq.h>
#include <assert.h>
#include <debug.h>
#include <nuttx/ioexpander/gpio.h>
#include <arch/board/board.h>
#include "arm_internal.h"
#include "chip.h"
#include "rp2040_gpio.h"
#if defined(CONFIG_DEV_GPIO) && !defined(CONFIG_GPIO_LOWER_HALF)
/* Output pins. GPIO25 is onboard LED any other outputs could be used.
*/
#define GPIO_OUT1 25
/* Input pins.
*/
#define GPIO_IN1 6
/* Interrupt pins.
*/
#define GPIO_IRQPIN1 11
/****************************************************************************
* Private Types
****************************************************************************/
struct rp2040gpio_dev_s
{
struct gpio_dev_s gpio;
uint8_t id;
};
struct rp2040gpint_dev_s
{
struct rp2040gpio_dev_s rp2040gpio;
pin_interrupt_t callback;
};
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#if BOARD_NGPIOOUT > 0
static int gpout_read(struct gpio_dev_s *dev, bool *value);
static int gpout_write(struct gpio_dev_s *dev, bool value);
#endif
#if BOARD_NGPIOIN > 0
static int gpin_read(struct gpio_dev_s *dev, bool *value);
#endif
#if BOARD_NGPIOINT > 0
static int gpint_read(struct gpio_dev_s *dev, bool *value);
static int gpint_attach(struct gpio_dev_s *dev,
pin_interrupt_t callback);
static int gpint_enable(struct gpio_dev_s *dev, bool enable);
#endif
/****************************************************************************
* Private Data
****************************************************************************/
#if BOARD_NGPIOOUT > 0
static const struct gpio_operations_s gpout_ops =
{
.go_read = gpout_read,
.go_write = gpout_write,
.go_attach = NULL,
.go_enable = NULL,
};
/* This array maps the GPIO pins used as OUTPUT */
static const uint32_t g_gpiooutputs[BOARD_NGPIOOUT] =
{
GPIO_OUT1
};
static struct rp2040gpio_dev_s g_gpout[BOARD_NGPIOOUT];
#endif
#if BOARD_NGPIOIN > 0
static const struct gpio_operations_s gpin_ops =
{
.go_read = gpin_read,
.go_write = NULL,
.go_attach = NULL,
.go_enable = NULL,
};
/* This array maps the GPIO pins used as INTERRUPT INPUTS */
static const uint32_t g_gpioinputs[BOARD_NGPIOIN] =
{
GPIO_IN1
};
static struct rp2040gpio_dev_s g_gpin[BOARD_NGPIOIN];
#endif
#if BOARD_NGPIOINT > 0
static const struct gpio_operations_s gpint_ops =
{
.go_read = gpint_read,
.go_write = NULL,
.go_attach = gpint_attach,
.go_enable = gpint_enable,
};
/* This array maps the GPIO pins used as INTERRUPT INPUTS */
static const uint32_t g_gpiointinputs[BOARD_NGPIOINT] =
{
GPIO_IRQPIN1,
};
static struct rp2040gpint_dev_s g_gpint[BOARD_NGPIOINT];
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: gpout_read
****************************************************************************/
#if BOARD_NGPIOOUT > 0
static int gpout_read(struct gpio_dev_s *dev, bool *value)
{
struct rp2040gpio_dev_s *rp2040gpio =
(struct rp2040gpio_dev_s *)dev;
DEBUGASSERT(rp2040gpio != NULL && value != NULL);
DEBUGASSERT(rp2040gpio->id < BOARD_NGPIOOUT);
gpioinfo("Reading...\n");
*value = rp2040_gpio_get(g_gpiooutputs[rp2040gpio->id]);
return OK;
}
/****************************************************************************
* Name: gpout_write
****************************************************************************/
static int gpout_write(struct gpio_dev_s *dev, bool value)
{
struct rp2040gpio_dev_s *rp2040gpio =
(struct rp2040gpio_dev_s *)dev;
DEBUGASSERT(rp2040gpio != NULL);
DEBUGASSERT(rp2040gpio->id < BOARD_NGPIOOUT);
gpioinfo("Writing %d\n", (int)value);
rp2040_gpio_put(g_gpiooutputs[rp2040gpio->id], value);
return OK;
}
#endif
/****************************************************************************
* Name: gpin_read
****************************************************************************/
#if BOARD_NGPIOIN > 0
static int gpin_read(struct gpio_dev_s *dev, bool *value)
{
struct rp2040gpio_dev_s *rp2040gpio =
(struct rp2040gpio_dev_s *)dev;
DEBUGASSERT(rp2040gpio != NULL && value != NULL);
DEBUGASSERT(rp2040gpio->id < BOARD_NGPIOIN);
gpioinfo("Reading... pin %d\n", (int)g_gpioinputs[rp2040gpio->id]);
*value = rp2040_gpio_get(g_gpioinputs[rp2040gpio->id]);
return OK;
}
#endif
/****************************************************************************
* Name: rp2040gpio_interrupt
****************************************************************************/
#if BOARD_NGPIOINT > 0
static int rp2040gpio_interrupt(int irq, void *context, void *arg)
{
struct rp2040gpint_dev_s *rp2040gpint =
(struct rp2040gpint_dev_s *)arg;
DEBUGASSERT(rp2040gpint != NULL && rp2040gpint->callback != NULL);
gpioinfo("Interrupt! callback=%p\n", rp2040gpint->callback);
rp2040gpint->callback(&rp2040gpint->rp2040gpio.gpio,
rp2040gpint->rp2040gpio.id);
return OK;
}
/****************************************************************************
* Name: gpint_read
****************************************************************************/
static int gpint_read(struct gpio_dev_s *dev, bool *value)
{
struct rp2040gpint_dev_s *rp2040gpint =
(struct rp2040gpint_dev_s *)dev;
DEBUGASSERT(rp2040gpint != NULL && value != NULL);
DEBUGASSERT(rp2040gpint->rp2040gpio.id < BOARD_NGPIOINT);
gpioinfo("Reading int pin...\n");
*value = rp2040_gpio_get(g_gpiointinputs[rp2040gpint->rp2040gpio.id]);
return OK;
}
/****************************************************************************
* Name: gpint_attach
****************************************************************************/
static int gpint_attach(struct gpio_dev_s *dev,
pin_interrupt_t callback)
{
struct rp2040gpint_dev_s *rp2040gpint =
(struct rp2040gpint_dev_s *)dev;
int irq = g_gpiointinputs[rp2040gpint->rp2040gpio.id];
int ret;
gpioinfo("Attaching the callback\n");
/* Make sure the interrupt is disabled */
rp2040_gpio_disable_irq(irq);
ret = rp2040_gpio_irq_attach(irq,
RP2040_GPIO_INTR_EDGE_LOW,
rp2040gpio_interrupt,
&g_gpint[rp2040gpint->rp2040gpio.id]);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: gpint_attach() failed: %d\n", ret);
return ret;
}
gpioinfo("Attach %p\n", callback);
rp2040gpint->callback = callback;
return OK;
}
/****************************************************************************
* Name: gpint_enable
****************************************************************************/
static int gpint_enable(struct gpio_dev_s *dev, bool enable)
{
struct rp2040gpint_dev_s *rp2040gpint =
(struct rp2040gpint_dev_s *)dev;
int irq = g_gpiointinputs[rp2040gpint->rp2040gpio.id];
if (enable)
{
if (rp2040gpint->callback != NULL)
{
gpioinfo("Enabling the interrupt\n");
/* Configure the interrupt for rising edge */
rp2040_gpio_enable_irq(irq);
}
}
else
{
gpioinfo("Disable the interrupt\n");
rp2040_gpio_disable_irq(irq);
}
return OK;
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: rp2040_dev_gpio_init
****************************************************************************/
int rp2040_dev_gpio_init(void)
{
int i;
int pincount = 0;
#if BOARD_NGPIOOUT > 0
for (i = 0; i < BOARD_NGPIOOUT; i++)
{
/* Setup and register the GPIO pin */
g_gpout[i].gpio.gp_pintype = GPIO_OUTPUT_PIN;
g_gpout[i].gpio.gp_ops = &gpout_ops;
g_gpout[i].id = i;
gpio_pin_register(&g_gpout[i].gpio, g_gpiooutputs[i]);
/* Configure the pins that will be used as output */
rp2040_gpio_init(g_gpiooutputs[i]);
rp2040_gpio_setdir(g_gpiooutputs[i], true);
rp2040_gpio_put(g_gpiooutputs[i], false);
pincount++;
}
#endif
pincount = 0;
#if BOARD_NGPIOIN > 0
for (i = 0; i < BOARD_NGPIOIN; i++)
{
/* Setup and register the GPIO pin */
g_gpin[i].gpio.gp_pintype = GPIO_INPUT_PIN;
g_gpin[i].gpio.gp_ops = &gpin_ops;
g_gpin[i].id = i;
gpio_pin_register(&g_gpin[i].gpio, g_gpioinputs[i]);
/* Configure the pins that will be used as INPUT */
rp2040_gpio_init(g_gpioinputs[i]);
pincount++;
}
#endif
pincount = 0;
#if BOARD_NGPIOINT > 0
for (i = 0; i < BOARD_NGPIOINT; i++)
{
/* Setup and register the GPIO pin */
g_gpint[i].rp2040gpio.gpio.gp_pintype = GPIO_INTERRUPT_PIN;
g_gpint[i].rp2040gpio.gpio.gp_ops = &gpint_ops;
g_gpint[i].rp2040gpio.id = i;
gpio_pin_register(&g_gpint[i].rp2040gpio.gpio, g_gpiointinputs[i]);
/* Configure the pins that will be used as interrupt input */
rp2040_gpio_init(g_gpiointinputs[i]);
/* pull-up = false : pull-down = true */
rp2040_gpio_set_pulls(g_gpiointinputs[i], false, true);
pincount++;
}
#endif
return OK;
}
#endif /* CONFIG_DEV_GPIO && !CONFIG_GPIO_LOWER_HALF */

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/****************************************************************************
* boards/arm/rp2040/waveshare-rp2040-zero/src/rp2040_pico.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __BOARDS_ARM_WAVESHARE_RP2040_ZERO_SRC_RP2040_PICO_H
#define __BOARDS_ARM_WAVESHARE_RP2040_ZERO_SRC_RP2040_PICO_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
int rp2040_bringup(void);
#ifdef CONFIG_DEV_GPIO
int rp2040_dev_gpio_init(void);
#endif
#endif /* __BOARDS_ARM_WAVESHARE_RP2040_ZERO_SRC_RP2040_PICO_H */