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BlackPill buttons example

Browse source 
Description:
Example to interact with KEY button and user external button connected to PA1.
For KEY button pull-up resistor is active, board schematic does not show any pull-up or pull-down resistor.

Results: Example working as expected.

BlackPill PWM example

Description:
PWM example using PB0 - Timer3 - Channel 3
Create default configuration for the example.

Controlling_RGB_LED

Description: Controlling a RGB LED on NuttX for Black Pill board [STM32F411]

Note: Example currently not working as expected.
This commit is contained in:
Samuel Martinez 2024-06-13 12:34:54 -04:00 committed by Xiang Xiao
parent 447f03cfd0
commit a6df724b4f
10 changed files with 715 additions and 5 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

53
boards/arm/stm32/stm32f411-minimum/configs/pwm/defconfig Normal file
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@ -0,0 +1,53 @@
#
# 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_FPU is not set
# CONFIG_DISABLE_OS_API is not set
# CONFIG_NSH_ARGCAT is not set
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
# CONFIG_NSH_DISABLE_IFCONFIG is not set
# CONFIG_NSH_DISABLE_PS is not set
# CONFIG_STM32_SYSCFG is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="stm32f411-minimum"
CONFIG_ARCH_BOARD_STM32F411_MINIMUM=y
CONFIG_ARCH_CHIP="stm32"
CONFIG_ARCH_CHIP_STM32=y
CONFIG_ARCH_CHIP_STM32F411CE=y
CONFIG_ARCH_INTERRUPTSTACK=2048
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARD_LOOPSPERMSEC=8499
CONFIG_BUILTIN=y
CONFIG_EXAMPLES_PWM=y
CONFIG_HAVE_CXX=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_INTELHEX_BINARY=y
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_LINELEN=64
CONFIG_NSH_READLINE=y
CONFIG_PREALLOC_TIMERS=4
CONFIG_PWM=y
CONFIG_RAM_SIZE=131072
CONFIG_RAM_START=0x20000000
CONFIG_RAW_BINARY=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=6
CONFIG_START_MONTH=6
CONFIG_START_YEAR=2020
CONFIG_STM32_FLASH_CONFIG_E=y
CONFIG_STM32_JTAG_SW_ENABLE=y
CONFIG_STM32_TIM3=y
CONFIG_STM32_TIM3_CH3OUT=y
CONFIG_STM32_TIM3_CHANNEL=3
CONFIG_STM32_TIM3_PWM=y
CONFIG_STM32_USART1=y
CONFIG_SYSTEM_NSH=y
CONFIG_TASK_NAME_SIZE=0
CONFIG_USART1_SERIAL_CONSOLE=y

69
boards/arm/stm32/stm32f411-minimum/configs/rgbled/defconfig Normal file
View file

@ -0,0 +1,69 @@
#
# 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_FPU is not set
# CONFIG_DISABLE_OS_API is not set
# CONFIG_NSH_ARGCAT is not set
# CONFIG_NSH_CMDOPT_HEXDUMP is not set
# CONFIG_NSH_DISABLE_IFCONFIG is not set
# CONFIG_NSH_DISABLE_PS is not set
# CONFIG_STM32_SYSCFG is not set
CONFIG_ARCH="arm"
CONFIG_ARCH_BOARD="stm32f411-minimum"
CONFIG_ARCH_BOARD_STM32F411_MINIMUM=y
CONFIG_ARCH_CHIP="stm32"
CONFIG_ARCH_CHIP_STM32=y
CONFIG_ARCH_CHIP_STM32F411CE=y
CONFIG_ARCH_INTERRUPTSTACK=2048
CONFIG_ARCH_STACKDUMP=y
CONFIG_BOARD_LOOPSPERMSEC=8499
CONFIG_BUILTIN=y
CONFIG_EXAMPLES_RGBLED=y
CONFIG_HAVE_CXX=y
CONFIG_INIT_ENTRYPOINT="nsh_main"
CONFIG_INTELHEX_BINARY=y
CONFIG_NSH_ARCHINIT=y
CONFIG_NSH_BUILTIN_APPS=y
CONFIG_NSH_FILEIOSIZE=512
CONFIG_NSH_LINELEN=64
CONFIG_NSH_READLINE=y
CONFIG_PREALLOC_TIMERS=4
CONFIG_PWM=y
CONFIG_RAM_SIZE=131072
CONFIG_RAM_START=0x20000000
CONFIG_RAW_BINARY=y
CONFIG_RGBLED=y
CONFIG_RR_INTERVAL=200
CONFIG_SCHED_WAITPID=y
CONFIG_START_DAY=6
CONFIG_START_MONTH=6
CONFIG_START_YEAR=2020
CONFIG_STM32_FLASH_CONFIG_E=y
CONFIG_STM32_JTAG_SW_ENABLE=y
CONFIG_STM32_TIM1=y
CONFIG_STM32_TIM1_CH1OUT=y
CONFIG_STM32_TIM1_CHMODE=0
CONFIG_STM32_TIM1_PWM=y
CONFIG_STM32_TIM2=y
CONFIG_STM32_TIM2_CH2OUT=y
CONFIG_STM32_TIM2_CHANNEL=2
CONFIG_STM32_TIM2_CHMODE=0
CONFIG_STM32_TIM2_PWM=y
CONFIG_STM32_TIM3=y
CONFIG_STM32_TIM3_CH3OUT=y
CONFIG_STM32_TIM3_CHANNEL=3
CONFIG_STM32_TIM3_CHMODE=0
CONFIG_STM32_TIM3_PWM=y
CONFIG_STM32_TIM4=y
CONFIG_STM32_TIM4_CH4OUT=y
CONFIG_STM32_TIM4_CHANNEL=4
CONFIG_STM32_TIM4_CHMODE=0
CONFIG_STM32_TIM4_PWM=y
CONFIG_STM32_USART1=y
CONFIG_SYSTEM_NSH=y
CONFIG_TASK_NAME_SIZE=0
CONFIG_USART1_SERIAL_CONSOLE=y

30
boards/arm/stm32/stm32f411-minimum/include/board.h
View file

@ -250,6 +250,30 @@
#define GPIO_USART6_RX GPIO_USART6_RX_1 /* PC7 */
#define GPIO_USART6_TX GPIO_USART6_TX_1 /* PC6 */
/* PWM
*
* The STM32F4 Discovery has no real on-board PWM devices, but the board
* can be configured to output a pulse train using TIM4 CH2 on PD13.
*/
#define GPIO_TIM1_CH1OUT GPIO_TIM1_CH1OUT_1 //PA8
#define GPIO_TIM2_CH2OUT GPIO_TIM2_CH2OUT_1 //PA1
#define GPIO_TIM3_CH3OUT GPIO_TIM3_CH3OUT_1 //PB0
#define GPIO_TIM4_CH4OUT GPIO_TIM4_CH4OUT_1 //PB9
/* RGB LED
*
* R = TIM1 CH1 on PA8 | G = TIM2 CH2 on PA1 | B = TIM4 CH4 on PB9
*
* Note: Pin boards: GPIO_TIM1_CH1OUT ; GPIO_TIM2_CH2OUT ; GPIO_TIM4_CH4OUT
*/
#define RGBLED_RPWMTIMER 1
#define RGBLED_RPWMCHANNEL 1
#define RGBLED_GPWMTIMER 2
#define RGBLED_GPWMCHANNEL 2
#define RGBLED_BPWMTIMER 4
#define RGBLED_BPWMCHANNEL 4
/* UART RX DMA configurations */
#define DMAMAP_USART1_RX DMAMAP_USART1_RX_2
@ -321,8 +345,10 @@
*/
#define BUTTON_USER 0
#define NUM_BUTTONS 1
#define BUTTON_EXTERNAL 1 //External user button connected to PA1
#define NUM_BUTTONS 2
#define BUTTON_USER_BIT (1 << BUTTON_USER)
#define BUTTON_USER_BIT (1 << BUTTON_USER)
#define BUTTON_EXTERNAL_BIT (1 << BUTTON_EXTERNAL)
#endif /* __BOARDS_ARM_STM32_STM32F411_MINIMUM_INCLUDE_BOARD_H */

12
boards/arm/stm32/stm32f411-minimum/src/CMakeLists.txt
View file

@ -32,6 +32,18 @@ if(CONFIG_USERLED)
list(APPEND SRCS stm32_userleds.c)
endif()
if(CONFIG_ARCH_BUTTONS)
list(APPEND SRCS stm32_buttons.c)
endif()
if(CONFIG_PWM)
list(APPEND SRCS stm32_pwm.c)
endif()
if(CONFIG_RGBLED)
list(APPEND SRCS stm32_rgbled.c)
endif()
if(CONFIG_SPI)
list(APPEND SRCS stm32_spi.c)
endif()

12
boards/arm/stm32/stm32f411-minimum/src/Make.defs
View file

@ -34,6 +34,18 @@ ifeq ($(CONFIG_USERLED),y)
CSRCS += stm32_userleds.c
endif
ifeq ($(CONFIG_ARCH_BUTTONS),y)
CSRCS += stm32_buttons.c
endif
ifeq ($(CONFIG_PWM),y)
CSRCS += stm32_pwm.c
endif
ifeq ($(CONFIG_RGBLED),y)
CSRCS += stm32_rgbled.c
endif
ifeq ($(CONFIG_ADC_HX711),y)
CSRCS += stm32_hx711.c
endif

34
boards/arm/stm32/stm32f411-minimum/src/stm32_bringup.c
View file

@ -34,6 +34,10 @@
# include <nuttx/leds/userled.h>
#endif
#ifdef CONFIG_INPUT_BUTTONS
# include <nuttx/input/buttons.h>
#endif
#ifdef CONFIG_STM32_OTGFS
# include "stm32_usbhost.h"
#endif
@ -98,6 +102,36 @@ int stm32_bringup(void)
}
#endif
#ifdef CONFIG_INPUT_BUTTONS
/* Register the BUTTON driver */
ret = btn_lower_initialize("/dev/buttons");
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: btn_lower_initialize() failed: %d\n", ret);
}
#endif
#ifdef CONFIG_PWM
/* Initialize PWM and register the PWM device. */
ret = stm32_pwm_setup();
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: stm32_pwm_setup() failed: %d\n", ret);
}
#endif
#ifdef CONFIG_RGBLED
/* Configure and initialize the RGB LED. */
ret = stm32_rgbled_setup();
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: stm32_rgbled_setup() failed: %d\n", ret);
}
#endif
#ifdef CONFIG_STM32F411MINIMUM_GPIO
ret = stm32_gpio_initialize();
if (ret != OK)

158
boards/arm/stm32/stm32f411-minimum/src/stm32_buttons.c Normal file
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@ -0,0 +1,158 @@
/****************************************************************************
* boards/arm/stm32/stm32f411-minimum/src/stm32_buttons.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 <stdint.h>
#include <errno.h>
#include <nuttx/arch.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "stm32_gpio.h"
#include "stm32f411-minimum.h"
#if defined(CONFIG_ARCH_BUTTONS)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#if defined(CONFIG_INPUT_BUTTONS) && !defined(CONFIG_ARCH_IRQBUTTONS)
# error "The NuttX Buttons Driver depends on IRQ support to work!\n"
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/* Pin configuration for each STM32F3Discovery button. This array is indexed
* by the BUTTON_* definitions in board.h
*/
static const uint32_t g_buttons[NUM_BUTTONS] =
{
GPIO_BTN_USER, GPIO_BTN_EXTERNAL
};
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_button_initialize
*
* Description:
* board_button_initialize() must be called to initialize button resources.
* After that, board_buttons() may be called to collect the current state
* of all buttons or board_button_irq() may be called to register button
* interrupt handlers.
*
****************************************************************************/
uint32_t board_button_initialize(void)
{
int i;
/* Configure the GPIO pins as inputs. NOTE that EXTI interrupts are
* configured for all pins.
*/
for (i = 0; i < NUM_BUTTONS; i++)
{
stm32_configgpio(g_buttons[i]);
}
return NUM_BUTTONS;
}
/****************************************************************************
* Name: board_buttons
****************************************************************************/
uint32_t board_buttons(void)
{
uint32_t ret = 0;
int i;
/* Check that state of each key */
for (i = 0; i < NUM_BUTTONS; i++)
{
/* A LOW value means that the key is pressed. */
bool released = stm32_gpioread(g_buttons[i]);
/* Accumulate the set of depressed (not released) keys */
if (!released)
{
ret |= (1 << i);
}
}
return ret;
}
/****************************************************************************
* Button support.
*
* Description:
* board_button_initialize() must be called to initialize button resources.
* After that, board_buttons() may be called to collect the current state
* of all buttons or board_button_irq() may be called to register button
* interrupt handlers.
*
* After board_button_initialize() has been called, board_buttons() may be
* called to collect the state of all buttons. board_buttons() returns
* an 32-bit bit set with each bit associated with a button. See the
* BUTTON_*_BIT definitions in board.h for the meaning of each bit.
*
* board_button_irq() may be called to register an interrupt handler that
* will be called when a button is depressed or released. The ID value is
* a button enumeration value that uniquely identifies a button resource.
* See the BUTTON_* definitions in board.h for the meaning of enumeration
* value.
*
****************************************************************************/
#ifdef CONFIG_ARCH_IRQBUTTONS
int board_button_irq(int id, xcpt_t irqhandler, void *arg)
{
int ret = -EINVAL;
/* The following should be atomic */
if (id >= MIN_IRQBUTTON && id <= MAX_IRQBUTTON)
{
ret = stm32_gpiosetevent(g_buttons[id], true, true, true, irqhandler,
arg);
}
return ret;
}
#endif
#endif /* CONFIG_ARCH_BUTTONS */

125
boards/arm/stm32/stm32f411-minimum/src/stm32_pwm.c Normal file
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@ -0,0 +1,125 @@
/****************************************************************************
* boards/arm/stm32/stm32f411-minimum/src/stm32_pwm.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 <errno.h>
#include <debug.h>
#include <nuttx/board.h>
#include <nuttx/timers/pwm.h>
#include <arch/board/board.h>
#include "chip.h"
#include "arm_internal.h"
#include "stm32_pwm.h"
#include "stm32f411-minimum.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* PWM
*
* The stm32f411-minimum has no real on-board PWM devices, but the board can
* be configured to output a pulse train using TIM4 CH2.
* This pin is used by FSMC is connect to CN5 just for this purpose:
*
* PB0 ADC12_IN8/TIM3_CH3
*
*/
#define HAVE_PWM 1
#ifndef CONFIG_PWM
# undef HAVE_PWM
#endif
#ifndef CONFIG_STM32_TIM3
# undef HAVE_PWM
#endif
#ifndef CONFIG_STM32_TIM3_PWM
# undef HAVE_PWM
#endif
#if !defined(CONFIG_STM32_TIM3_CHANNEL) || CONFIG_STM32_TIM3_CHANNEL != STM32F411MINIMUM_PWMCHANNEL
# undef HAVE_PWM
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_pwm_setup
*
* Description:
* Initialize PWM and register the PWM device.
*
****************************************************************************/
int stm32_pwm_setup(void)
{
#ifdef HAVE_PWM
static bool initialized = false;
struct pwm_lowerhalf_s *pwm;
int ret;
/* Have we already initialized? */
if (!initialized)
{
/* Call stm32_pwminitialize() to get an instance of the PWM interface */
pwm = stm32_pwminitialize(STM32F411MINIMUM_PWMTIMER);
if (!pwm)
{
aerr("ERROR: Failed to get the STM32 PWM lower half\n");
return -ENODEV;
}
/* Register the PWM driver at "/dev/pwm0" */
ret = pwm_register("/dev/pwm0", pwm);
if (ret < 0)
{
aerr("ERROR: pwm_register failed: %d\n", ret);
return ret;
}
/* Now we are initialized */
initialized = true;
}
return OK;
#else
return -ENODEV;
#endif
}

181
boards/arm/stm32/stm32f411-minimum/src/stm32_rgbled.c Normal file
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@ -0,0 +1,181 @@
/****************************************************************************
* boards/arm/stm32/stm32f411-minimum/src/stm32_rgbled.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 <errno.h>
#include <debug.h>
#include <nuttx/timers/pwm.h>
#include <nuttx/leds/rgbled.h>
#include <arch/board/board.h>
#include "chip.h"
#include "arm_internal.h"
#include "stm32_pwm.h"
#include "stm32f411-minimum.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#define HAVE_RGBLED 1
#ifndef CONFIG_PWM
# undef HAVE_RGBLED
#endif
#ifndef CONFIG_STM32_TIM1
# undef HAVE_RGBLED
#endif
#ifndef CONFIG_STM32_TIM2
# undef HAVE_RGBLED
#endif
#ifndef CONFIG_STM32_TIM4
# undef HAVE_RGBLED
#endif
#ifndef CONFIG_STM32_TIM1_PWM
# undef HAVE_RGBLED
#endif
#ifndef CONFIG_STM32_TIM2_PWM
# undef HAVE_RGBLED
#endif
#ifndef CONFIG_STM32_TIM4_PWM
# undef HAVE_RGBLED
#endif
#if CONFIG_STM32_TIM1_CHANNEL != RGBLED_RPWMCHANNEL
# undef HAVE_PWM
#endif
#if CONFIG_STM32_TIM2_CHANNEL != RGBLED_GPWMCHANNEL
# undef HAVE_PWM
#endif
#if CONFIG_STM32_TIM4_CHANNEL != RGBLED_BPWMCHANNEL
# undef HAVE_PWM
#endif
#ifdef HAVE_RGBLED
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: stm32_rgbled_setup
*
* Description:
* Initial for support of a connected RGB LED using PWM.
*
****************************************************************************/
int stm32_rgbled_setup(void)
{
static bool initialized = false;
struct pwm_lowerhalf_s *ledr;
struct pwm_lowerhalf_s *ledg;
struct pwm_lowerhalf_s *ledb;
struct pwm_info_s info;
int ret;
/* Have we already initialized? */
if (!initialized)
{
/* Call stm32_pwminitialize() to get an instance of the PWM interface */
ledr = stm32_pwminitialize(RGBLED_RPWMTIMER);
if (!ledr)
{
lederr("ERROR: Failed to get the STM32 PWM lower half to LEDR\n");
return -ENODEV;
}
/* Define frequency and duty cycle */
info.frequency = 100;
info.duty = 0;
/* Initialize LED R */
ledr->ops->setup(ledr);
ledr->ops->start(ledr, &info);
/* Call stm32_pwminitialize() to get an instance of the PWM interface */
ledg = stm32_pwminitialize(RGBLED_GPWMTIMER);
if (!ledg)
{
lederr("ERROR: Failed to get the STM32 PWM lower half to LEDG\n");
return -ENODEV;
}
/* Initialize LED G */
ledg->ops->setup(ledg);
ledg->ops->start(ledg, &info);
/* Call stm32_pwminitialize() to get an instance of the PWM interface */
ledb = stm32_pwminitialize(RGBLED_BPWMTIMER);
if (!ledb)
{
lederr("ERROR: Failed to get the STM32 PWM lower half to LEDB\n");
return -ENODEV;
}
/* Initialize LED B */
ledb->ops->setup(ledb);
ledb->ops->start(ledb, &info);
/* Register the RGB LED diver at "/dev/rgbled0" */
ret = rgbled_register("/dev/rgbled0", ledr, ledg, ledb);
if (ret < 0)
{
lederr("ERROR: rgbled_register failed: %d\n", ret);
return ret;
}
/* Now we are initialized */
initialized = true;
}
return OK;
}
#else
# error "HAVE_RGBLED is undefined"
#endif /* HAVE_RGBLED */

46
boards/arm/stm32/stm32f411-minimum/src/stm32f411-minimum.h
View file

@ -59,11 +59,19 @@
*/
#define MIN_IRQBUTTON BUTTON_USER
#define MAX_IRQBUTTON BUTTON_USER
#define NUM_IRQBUTTONS 1
#define MAX_IRQBUTTON BUTTON_EXTERNAL
#define NUM_IRQBUTTONS (BUTTON_USER - BUTTON_EXTERNAL + 1)
#define GPIO_BTN_USER \
(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTA | GPIO_PIN0)
(GPIO_INPUT |GPIO_PULLUP |GPIO_EXTI | GPIO_PORTA | GPIO_PIN0)
#define GPIO_BTN_EXTERNAL \
(GPIO_INPUT |GPIO_FLOAT |GPIO_EXTI | GPIO_PORTA | GPIO_PIN1)
/* PWM Configuration */
#define STM32F411MINIMUM_PWMTIMER 3
#define STM32F411MINIMUM_PWMCHANNEL 3
/* SPI chip selects */
@ -200,6 +208,38 @@ int stm32_usbhost_initialize(void);
int stm32_gpio_initialize(void);
#endif
/****************************************************************************
* Name: stm32_pwm_setup
*
* Description:
* Initialize PWM and register the PWM device.
*
****************************************************************************/
#ifdef CONFIG_PWM
int stm32_pwm_setup(void);
#endif
/****************************************************************************
* Name: stm32_rgbled_setup
*
* Description:
* This function is called by board initialization logic to configure the
* RGB LED driver. This function will register the driver as /dev/rgbled0.
*
* Input Parameters:
* None
*
* Returned Value:
* Zero is returned on success. Otherwise, a negated errno value is
* returned to indicate the nature of the failure.
*
****************************************************************************/
#ifdef CONFIG_RGBLED
int stm32_rgbled_setup(void);
#endif
/****************************************************************************
* Name: stm32_bringup
*