mirror of
https://github.com/apache/nuttx.git
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arch/z80: Remove the temporary file ez80_serial.c.SAVE
Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao
Alin Jerpelea
parent
445770a600
commit
27425f3035
1 changed files with 0 additions and 850 deletions
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@ -1,850 +0,0 @@
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/****************************************************************************
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* arch/z80/src/ez08/ez80_serial.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License. *
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include <nuttx/arch.h>
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#include <nuttx/serial/serial.h>
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#include <arch/io.h>
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#include "chip.h"
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#include "z80_internal.h"
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#ifdef USE_SERIALDRIVER
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Types
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****************************************************************************/
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struct ez80_dev_s
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{
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uint16_t uartbase; /* Base address of UART registers */
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unsigned int baud; /* Configured baud */
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uint8_t irq; /* IRQ associated with this UART */
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uint8_t parity; /* 0=none, 1=odd, 2=even */
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uint8_t bits; /* Number of bits (7 or 8) */
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bool stopbits2; /* true: Configure with 2 (vs 1) */
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};
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/****************************************************************************
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* Private Function Prototypes
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****************************************************************************/
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static int ez80_setup(struct uart_dev_s *dev);
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static void ez80_shutdown(struct uart_dev_s *dev);
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static int ez80_attach(struct uart_dev_s *dev);
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static void ez80_detach(struct uart_dev_s *dev);
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static int ez80_interrupt(int irq, void *context, void *arg);
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static int ez80_ioctl(struct file *filep, int cmd, unsigned long arg);
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static int ez80_receive(struct uart_dev_s *dev, unsigned int *status);
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static void ez80_rxint(struct uart_dev_s *dev, bool enable);
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static bool ez80_rxavailable(struct uart_dev_s *dev);
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static void ez80_send(struct uart_dev_s *dev, int ch);
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static void ez80_txint(struct uart_dev_s *dev, bool enable);
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static bool ez80_txready(struct uart_dev_s *dev);
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static bool ez80_txempty(struct uart_dev_s *dev);
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const struct uart_ops_s g_uart_ops =
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{
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ez80_setup, /* setup */
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ez80_shutdown, /* shutdown */
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ez80_attach, /* attach */
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ez80_detach, /* detach */
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ez80_ioctl, /* ioctl */
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ez80_receive, /* receive */
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ez80_rxint, /* rxint */
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ez80_rxavailable, /* rxavailable */
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#ifdef CONFIG_SERIAL_IFLOWCONTROL
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NULL, /* rxflowcontrol */
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#endif
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ez80_send, /* send */
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ez80_txint, /* txint */
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ez80_txready, /* txready */
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ez80_txempty /* txempty */
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};
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/* I/O buffers */
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#ifdef CONFIG_EZ80_UART0
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static char g_uart0rxbuffer[CONFIG_UART0_RXBUFSIZE];
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static char g_uart0txbuffer[CONFIG_UART0_TXBUFSIZE];
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#endif
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#ifdef CONFIG_EZ80_UART1
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static char g_uart1rxbuffer[CONFIG_UART1_RXBUFSIZE];
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static char g_uart1txbuffer[CONFIG_UART1_TXBUFSIZE];
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#endif
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/* This describes the state of the UART0 port. */
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#ifdef CONFIG_EZ80_UART0
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static struct ez80_dev_s g_uart0priv =
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{
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EZ80_UART0_BASE, /* uartbase */
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CONFIG_UART0_BAUD, /* baud */
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EZ80_UART0_IRQ, /* irq */
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CONFIG_UART0_PARITY, /* parity */
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CONFIG_UART0_BITS, /* bits */
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CONFIG_UART0_2STOP /* stopbits2 */
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};
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static uart_dev_t g_uart0port =
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{
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0, /* open_count */
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false, /* xmitwaiting */
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false, /* recvwaiting */
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#ifdef CONFIG_UART0_SERIAL_CONSOLE
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true, /* isconsole */
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#else
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false, /* isconsole */
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#endif
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{ 0 }, /* closesem */
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{ 0 }, /* xmitsem */
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{ 0 }, /* recvsem */
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{ 0 }, /* pollsem */
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{
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{ 0 }, /* xmit.sem */
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0, /* xmit.head */
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0, /* xmit.tail */
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CONFIG_UART0_TXBUFSIZE, /* xmit.size */
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g_uart0txbuffer, /* xmit.buffer */
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},
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{
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{ 0 }, /* recv.sem */
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0, /* recv.head */
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0, /* recv.tail */
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CONFIG_UART0_RXBUFSIZE, /* recv.size */
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g_uart0rxbuffer, /* recv.buffer */
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},
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&g_uart_ops, /* ops */
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&g_uart0priv, /* priv */
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NULL, /* pollfds */
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};
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#endif
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/* This describes the state of the UART1 port. */
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#ifdef CONFIG_EZ80_UART1
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static struct ez80_dev_s g_uart1priv =
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{
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EZ80_UART1_BASE, /* uartbase */
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CONFIG_UART1_BAUD, /* baud */
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EZ80_UART1_IRQ, /* irq */
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CONFIG_UART1_PARITY, /* parity */
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CONFIG_UART1_BITS, /* bits */
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CONFIG_UART1_2STOP /* stopbits2 */
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};
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static uart_dev_t g_uart1port =
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{
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0, /* open_count */
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false, /* xmitwaiting */
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false, /* recvwaiting */
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#ifdef CONFIG_UART1_SERIAL_CONSOLE
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true, /* isconsole */
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#else
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false, /* isconsole */
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#endif
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{ 0 }, /* closesem */
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{ 0 }, /* xmitsem */
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{ 0 }, /* recvsem */
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{ 0 }, /* pollsem */
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{
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{ 0 }, /* xmit.sem */
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0, /* xmit.head */
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0, /* xmit.tail */
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CONFIG_UART1_TXBUFSIZE, /* xmit.size */
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g_uart1txbuffer, /* xmit.buffer */
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},
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{
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{ 0 }, /* recv.sem */
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0, /* recv.head */
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0, /* recv.tail */
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CONFIG_UART1_RXBUFSIZE, /* recv.size */
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g_uart1rxbuffer, /* recv.buffer */
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},
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&g_uart_ops, /* ops */
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&g_uart1priv, /* priv */
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NULL, /* pollfds */
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};
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#endif
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/* Now, which one with be tty0/console and which tty1? */
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#if defined(CONFIG_UART0_SERIAL_CONSOLE) && defined(CONFIG_EZ80_UART0)
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# define CONSOLE_DEV g_uart0port
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# define TTYS0_DEV g_uart0port
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# if defined(CONFIG_EZ80_UART1)
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# define TTYS1_DEV g_uart1port
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# endif
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#elif defined(CONFIG_UART1_SERIAL_CONSOLE) && defined(CONFIG_EZ80_UART1)
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# define CONSOLE_DEV g_uart1port
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# define TTYS0_DEV g_uart1port
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# if defined(CONFIG_EZ80_UART0)
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# define TTYS1_DEV g_uart0port
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# endif
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#elif defined(CONFIG_EZ80_UART0)
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# define TTYS0_DEV g_uart0port
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# if defined(CONFIG_EZ80_UART1)
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# define TTYS1_DEV g_uart1port
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# endif
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#elif defined(CONFIG_EZ80_UART0)
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# define TTYS0_DEV g_uart1port
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#endif
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: ez80_serialin
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****************************************************************************/
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static uint8_t ez80_serialin(FAR struct ez80_dev_s *priv, uint8_t offset)
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{
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return inp(priv->uartbase + offset);
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}
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/****************************************************************************
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* Name: ez80_serialout
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****************************************************************************/
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static void ez80_serialout(FAR struct ez80_dev_s *priv, uint8_t offset,
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uint8_t value)
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{
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outp(priv->uartbase + offset, value);
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}
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/****************************************************************************
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* Name: ez80_disableuartint
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****************************************************************************/
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static void ez80_disableuartint(FAR struct ez80_dev_s *priv)
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{
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uint8_t ier = ez80_serialin(priv, EZ80_UART_IER);
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ier &= ~EZ80_UARTEIR_INTMASK;
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ez80_serialout(priv, EZ80_UART_IER, ier);
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}
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/****************************************************************************
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* Name: ez80_restoreuartint
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****************************************************************************/
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static void ez80_restoreuartint(FAR struct ez80_dev_s *priv, uint8_t bits)
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{
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uint8_t ier = ez80_serialin(priv, EZ80_UART_IER);
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ier |= bits & (EZ80_UARTEIR_TIE | EZ80_UARTEIR_RIE);
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ez80_serialout(priv, EZ80_UART_IER, ier);
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}
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/****************************************************************************
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* Name: ez80_waittxready
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****************************************************************************/
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static void ez80_waittxready(FAR struct ez80_dev_s *priv)
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{
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int tmp;
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for (tmp = 1000 ; tmp > 0 ; tmp--)
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{
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if ((ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_THRE) != 0)
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{
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break;
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}
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}
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}
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/****************************************************************************
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* Name: ez80_setbaud
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****************************************************************************/
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static void ez80_setbaud(FAR struct ez80_dev_s *priv, uint24_t baud)
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{
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uint32_t brg_divisor;
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uint8_t lctl;
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/* The resulting BAUD and depends on the system clock frequency and the
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* BRG divisor as follows:
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*
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* BAUD = SYSTEM_CLOCK_FREQUENCY / (16 * BRG_Divisor)
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*
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* Or
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*
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* BRG_Divisor = SYSTEM_CLOCK_FREQUENCY / 16 / BAUD
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*/
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brg_divisor = (ez80_systemclock + (baud << 3)) / (baud << 4);
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/* Set the DLAB bit to enable access to the BRG registers */
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lctl = ez80_serialin(priv, EZ80_UART_LCTL);
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lctl |= EZ80_UARTLCTL_DLAB;
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ez80_serialout(priv, EZ80_UART_LCTL, lctl);
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ez80_serialout(priv, EZ80_UART_BRGL, (uint8_t)(brg_divisor & 0xff));
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ez80_serialout(priv, EZ80_UART_BRGH, (uint8_t)(brg_divisor >> 8));
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lctl &= ~EZ80_UARTLCTL_DLAB;
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ez80_serialout(priv, EZ80_UART_LCTL, lctl);
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}
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/****************************************************************************
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* Name: ez80_setup
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*
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* Description:
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* Configure the UART baud, bits, parity, fifos, etc. This method is called
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* the first time that the serial port is opened.
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*
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****************************************************************************/
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static int ez80_setup(FAR struct uart_dev_s *dev)
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{
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#ifndef CONFIG_SUPPRESS_UART_CONFIG
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FAR struct ez80_dev_s *priv = dev->priv;
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uint8_t reg;
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uint8_t cval;
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/* Put the UART in a known state */
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ez80_shutdown(dev);
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/* Configure serial properties */
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if (priv->bits == 7)
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{
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cval = EZ80_UARTCHAR_7BITS;
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}
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else
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{
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cval = EZ80_UARTCHAR_8BITS;
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}
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if (priv->stopbits2)
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{
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cval |= EZ80_UARTLCTL_2STOP;
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}
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if (priv->parity == 1) /* Odd parity */
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{
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cval |= (EZ80_UARTLCTL_PEN);
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}
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else if (priv->parity == 2) /* Even parity */
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{
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cval |= (EZ80_UARTLCTL_PEN | EZ80_UARTLCTL_EPS);
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}
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/* Set the baud rate */
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ez80_setbaud(priv, priv->baud);
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ez80_serialout(priv, EZ80_UART_MCTL, 0);
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/* Set the character properties */
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reg = (ez80_serialin(priv, EZ80_UART_LCTL) & ~EZ80_UARTLCTL_MASK) | cval;
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ez80_serialout(priv, EZ80_UART_LCTL, reg);
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/* Enable and flush the Rx and Tx FIFOs */
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reg = EZ80_UARTFCTL_FIFOEN;
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ez80_serialout(priv, EZ80_UART_FCTL, reg);
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reg |= (EZ80_UARTFCTL_CLRTXF | EZ80_UARTFCTL_CLRRXF);
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ez80_serialout(priv, EZ80_UART_FCTL, reg);
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/* Set the Rx FIFO trigger level. Small values assure the quickest
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* response to get data from the Rx FIFO. This minimizes the
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* likelihood of Rx overruns with a penalty of more time spent
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* handling Rx interrupts.
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*/
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#if defined(CONFIG_EZ80_UART_RXFIFO_1)
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reg |= EZ80_UARTTRIG_1;
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#elif defined(CONFIG_EZ80_UART_RXFIFO_4)
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reg |= EZ80_UARTTRIG_4;
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#elif defined(CONFIG_EZ80_UART_RXFIFO_8)
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reg |= EZ80_UARTTRIG_8;
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#elif defined(CONFIG_EZ80_UART_RXFIFO_14)
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reg |= EZ80_UARTTRIG_14;
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#else
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# error No Rx FIFO trigger level
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#endif
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ez80_serialout(priv, EZ80_UART_FCTL, reg);
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#endif
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return OK;
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}
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/****************************************************************************
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* Name: ez80_shutdown
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*
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* Description:
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* Disable and reset the UART to its initial. This method is called when
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* the serial port is closed and also before reconfiguring the UART.
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*
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****************************************************************************/
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static void ez80_shutdown(FAR struct uart_dev_s *dev)
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{
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FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
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uint8_t reg;
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/* Make sure that DLAB == 0 */
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reg = ez80_serialin(priv, EZ80_UART_LCTL);
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reg &= ~EZ80_UARTLCTL_DLAB;
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ez80_serialout(priv, EZ80_UART_LCTL, reg);
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/* Disable UART interrupts */
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ez80_disableuartint(priv);
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/* Flush and disable the Tx and Rx FIFOs */
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reg = ez80_serialin(priv, EZ80_UART_FCTL);
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reg |= (EZ80_UARTFCTL_CLRTXF | EZ80_UARTFCTL_CLRRXF);
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ez80_serialout(priv, EZ80_UART_FCTL, reg);
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ez80_serialout(priv, EZ80_UART_FCTL, 0);
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/* Restore other writable registers to their default state */
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ez80_serialout(priv, EZ80_UART_MCTL, 0);
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ez80_serialout(priv, EZ80_UART_LCTL, 0);
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}
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/****************************************************************************
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* Name: ez80_attach
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*
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* Description:
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* Configure the UART to operation in interrupt driven mode. This method
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* is called when the serial port is opened. Normally, this is just after
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* the the setup() method is called, however, the serial console may
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* operate in a non-interrupt driven mode during the boot phase.
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*
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* RX and TX interrupts are not enabled when by the attach method (unless
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* the hardware supports multiple levels of interrupt enabling). The RX
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* and TX interrupts are not enabled until the txint() and rxint() methods
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* are called.
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*
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****************************************************************************/
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static int ez80_attach(FAR struct uart_dev_s *dev)
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{
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FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
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/* Attach the IRQ */
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return irq_attach(priv->irq, ez80_interrupt, dev);
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}
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/****************************************************************************
|
||||
* Name: ez80_detach
|
||||
*
|
||||
* Description:
|
||||
* Detach UART interrupts. This method is called when the serial port is
|
||||
* closed normally just before the shutdown method is called. The
|
||||
* exception is the serial console which is never shutdown.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void ez80_detach(FAR struct uart_dev_s *dev)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
ez80_disableuartint(priv);
|
||||
irq_detach(priv->irq);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_interrupt
|
||||
*
|
||||
* Description:
|
||||
* This is the UART interrupt handler. It will be invoked
|
||||
* when an interrupt received on the 'irq' It should call
|
||||
* uart_transmitchars or uart_receivechar to perform the
|
||||
* appropriate data transfers. The interrupt handling logic\
|
||||
* must be able to map the 'irq' number into the appropriate
|
||||
* uart_dev_s structure in order to call these functions.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int ez80_interrupt(int irq, FAR void *context, FAR void *arg)
|
||||
{
|
||||
FAR struct uart_dev_s *dev = (FAR struct uart_dev_s *)arg;
|
||||
struct ez80_dev_s *priv;
|
||||
volatile uint32_t cause;
|
||||
|
||||
DEBUGASSERT(dev != NULL && dev->priv != NULL);
|
||||
priv = (struct ez80_dev_s *)dev->priv;
|
||||
|
||||
cause = ez80_serialin(priv, EZ80_UART_IIR) & EZ80_UARTIIR_CAUSEMASK;
|
||||
|
||||
/* Check for character timeout (CTO) or Receiver Data Ready (RDR) */
|
||||
|
||||
if (cause == EZ80_UARTINSTS_CTO || cause == EZ80_UARTINSTS_RDR)
|
||||
{
|
||||
/* Receive characters from the RX fifo */
|
||||
|
||||
uart_recvchars(dev);
|
||||
}
|
||||
|
||||
/* Check for transmission buffer empty */
|
||||
|
||||
else if (cause == EZ80_UARTINSTS_TBE)
|
||||
{
|
||||
uart_xmitchars(dev);
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_ioctl
|
||||
*
|
||||
* Description:
|
||||
* All ioctl calls will be routed through this method
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int ez80_ioctl(FAR struct file *filep, int cmd, unsigned long arg)
|
||||
{
|
||||
return -ENOTTY;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_receive
|
||||
*
|
||||
* Description:
|
||||
* Called (usually) from the interrupt level to receive one character from
|
||||
* the UART. Error bits associated with the receipt are provided in the
|
||||
* the return 'status'.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static int ez80_receive(FAR struct uart_dev_s *dev, FAR unsigned int *status)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
uint8_t rbr = ez80_serialin(priv, EZ80_UART_RBR);
|
||||
uint8_t lsr = ez80_serialin(priv, EZ80_UART_LSR);
|
||||
|
||||
*status = (unsigned int)lsr;
|
||||
return rbr;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_rxint
|
||||
*
|
||||
* Description:
|
||||
* Call to enable or disable RX interrupts
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void ez80_rxint(FAR struct uart_dev_s *dev, bool enable)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
uint8_t ier = ez80_serialin(priv, EZ80_UART_IER);
|
||||
|
||||
if (enable)
|
||||
{
|
||||
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
|
||||
ier |= EZ80_UARTEIR_RIE;
|
||||
ez80_serialout(priv, EZ80_UART_IER, ier);
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
ier &= ~EZ80_UARTEIR_RIE;
|
||||
ez80_serialout(priv, EZ80_UART_IER, ier);
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_rxavailable
|
||||
*
|
||||
* Description:
|
||||
* Return true if the receive fifo is not empty
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static bool ez80_rxavailable(FAR struct uart_dev_s *dev)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
return (ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_DR) != 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_send
|
||||
*
|
||||
* Description:
|
||||
* This method will send one byte on the UART
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void ez80_send(FAR struct uart_dev_s *dev, int ch)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
ez80_serialout(priv, EZ80_UART_THR, (uint8_t)ch);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_txint
|
||||
*
|
||||
* Description:
|
||||
* Call to enable or disable TX interrupts
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static void ez80_txint(FAR struct uart_dev_s *dev, bool enable)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
uint8_t ier = ez80_serialin(priv, EZ80_UART_IER);
|
||||
|
||||
if (enable)
|
||||
{
|
||||
#ifndef CONFIG_SUPPRESS_SERIAL_INTS
|
||||
ier |= EZ80_UARTEIR_TIE;
|
||||
ez80_serialout(priv, EZ80_UART_IER, ier);
|
||||
#endif
|
||||
}
|
||||
else
|
||||
{
|
||||
ier &= ~EZ80_UARTEIR_TIE;
|
||||
ez80_serialout(priv, EZ80_UART_IER, ier);
|
||||
}
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_txready
|
||||
*
|
||||
* Description:
|
||||
* Return true if the transmit fifo is not full
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static bool ez80_txready(FAR struct uart_dev_s *dev)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
return (ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_THRE) != 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_txempty
|
||||
*
|
||||
* Description:
|
||||
* Return true if the transmit fifo is empty
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
static bool ez80_txempty(FAR struct uart_dev_s *dev)
|
||||
{
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)dev->priv;
|
||||
return (ez80_serialin(priv, EZ80_UART_LSR) & EZ80_UARTLSR_TEMT) != 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: z80_serial_initialize
|
||||
*
|
||||
* Description:
|
||||
* Register serial console and serial ports.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
void z80_serial_initialize(void)
|
||||
{
|
||||
uint8_t regval;
|
||||
|
||||
/* Make sure that all UART interrupts are disabled */
|
||||
|
||||
ez80_disableuartint(TTYS0_DEV.priv);
|
||||
#ifdef TTYS1_DEV
|
||||
ez80_disableuartint(TTYS1_DEV.priv);
|
||||
#endif
|
||||
|
||||
/* Configure pins for usage of UARTs */
|
||||
|
||||
#ifdef CONFIG_EZ80_UART0
|
||||
/* Set Port D, pins 0 and 1 for their alternate function (Mode 7) to enable UART0 */
|
||||
|
||||
regval = inp(EZ80_PD_DDR);
|
||||
regval |= 3;
|
||||
outp(EZ80_PD_DDR, regval);
|
||||
|
||||
regval = inp(EZ80_PD_ALT1);
|
||||
regval &= ~3;
|
||||
outp(EZ80_PD_ALT1, regval);
|
||||
|
||||
regval = inp(EZ80_PD_ALT2);
|
||||
regval |= 3;
|
||||
outp(EZ80_PD_ALT2, regval);
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_EZ80_UART1
|
||||
/* Set Port C, pins 0 and 1 for their alternate function (Mode 7) to enable UART1 */
|
||||
|
||||
regval = inp(EZ80_PC_DDR);
|
||||
regval |= 3;
|
||||
outp(EZ80_PC_DDR, regval);
|
||||
|
||||
regval = inp(EZ80_PC_ALT1);
|
||||
regval &= ~3;
|
||||
outp(EZ80_PC_ALT1, regval);
|
||||
|
||||
regval = inp(EZ80_PC_ALT2);
|
||||
regval |= 3;
|
||||
outp(EZ80_PC_ALT2, regval);
|
||||
#endif
|
||||
|
||||
/* If there is a console, then configure the console now */
|
||||
|
||||
#ifdef CONSOLE_DEV
|
||||
CONSOLE_DEV.isconsole = true;
|
||||
ez80_setup(&CONSOLE_DEV);
|
||||
#endif
|
||||
|
||||
/* Register console and tty devices */
|
||||
|
||||
#ifdef CONSOLE_DEV
|
||||
uart_register("/dev/console", &CONSOLE_DEV);
|
||||
#endif
|
||||
uart_register("/dev/ttyS0", &TTYS0_DEV);
|
||||
#ifdef TTYS1_DEV
|
||||
uart_register("/dev/ttyS1", &TTYS1_DEV);
|
||||
#endif
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_putc
|
||||
*
|
||||
* Description:
|
||||
* Provide priority, low-level access to support OS debug
|
||||
* writes
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
#ifdef CONSOLE_DEV
|
||||
FAR struct ez80_dev_s *priv = (FAR struct ez80_dev_s *)CONSOLE_DEV.priv;
|
||||
uint8_t ier = ez80_serialin(priv, EZ80_UART_IER);
|
||||
|
||||
ez80_disableuartint(priv);
|
||||
|
||||
/* Check for LF */
|
||||
|
||||
if (ch == '\n')
|
||||
{
|
||||
/* Output CR before LF*/
|
||||
|
||||
ez80_waittxready(priv);
|
||||
ez80_serialout(priv, EZ80_UART_THR, '\r');
|
||||
}
|
||||
|
||||
/* Output the character */
|
||||
|
||||
ez80_waittxready(priv);
|
||||
ez80_serialout(priv, EZ80_UART_THR, (uint8_t)ch);
|
||||
|
||||
/* Wait for the character to be sent before re-enabling interrupts */
|
||||
|
||||
ez80_waittxready(priv);
|
||||
ez80_restoreuartint(priv, ier);
|
||||
return ch;
|
||||
#endif
|
||||
}
|
||||
|
||||
#else /* USE_SERIALDRIVER */
|
||||
|
||||
/****************************************************************************
|
||||
* Pre-processor Definitions
|
||||
****************************************************************************/
|
||||
|
||||
#ifdef CONFIG_UART1_SERIAL_CONSOLE
|
||||
# define ez80_inp(offs) inp((EZ80_UART1_BASE+(offs)))
|
||||
# define ez80_outp(offs,val) outp((EZ80_UART1_BASE+(offs)), (val))
|
||||
#else
|
||||
# define ez80_inp(offs) inp((EZ80_UART0_BASE+(offs)))
|
||||
# define ez80_outp(offs,val) outp((EZ80_UART0_BASE+(offs)), (val))
|
||||
#endif
|
||||
|
||||
#define ez80_txready() ((ez80_inp(EZ80_UART_LSR) & EZ80_UARTLSR_THRE) != 0)
|
||||
#define ez80_send(ch) ez80_outp(EZ80_UART_THR, ch)
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ez80_putc
|
||||
****************************************************************************/
|
||||
|
||||
static void ez80_putc(int ch)
|
||||
{
|
||||
int tmp;
|
||||
for (tmp = 1000 ; tmp > 0 && !ez80_txready(); tmp--);
|
||||
ez80_send(ch);
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Name: up_putc
|
||||
****************************************************************************/
|
||||
|
||||
int up_putc(int ch)
|
||||
{
|
||||
/* Check for LF */
|
||||
|
||||
if (ch == '\n')
|
||||
{
|
||||
/* Output CR before LF */
|
||||
|
||||
ez80_putc('\r');
|
||||
}
|
||||
|
||||
/* Output character */
|
||||
|
||||
ez80_putc(ch);
|
||||
return ch;
|
||||
}
|
||||
|
||||
#endif /* USE_SERIALDRIVER */
|
||||
Loading…
Reference in a new issue