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-rw-r--r--libcpu/arm/s3c24x0/serial.c291
-rw-r--r--libcpu/arm/s3c24x0/serial.h66
2 files changed, 0 insertions, 357 deletions
diff --git a/libcpu/arm/s3c24x0/serial.c b/libcpu/arm/s3c24x0/serial.c
deleted file mode 100644
index 1eca1b1110..0000000000
--- a/libcpu/arm/s3c24x0/serial.c
+++ /dev/null
@@ -1,291 +0,0 @@
-/*
- * Copyright (c) 2006-2018, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- * 2006-03-13 Bernard first version
- * 2009-04-20 yi.qiu modified according bernard's stm32 version
- */
-
-#include <rtthread.h>
-
-#include "serial.h"
-
-/**
- * @addtogroup S3C24X0
- */
-/*@{*/
-
-/* RT-Thread Device Interface */
-/**
- * This function initializes serial
- */
-static rt_err_t rt_serial_init(rt_device_t dev)
-{
- struct serial_device* uart = (struct serial_device*) dev->user_data;
-
- if (!(dev->flag & RT_DEVICE_FLAG_ACTIVATED))
- {
-
- if (dev->flag & RT_DEVICE_FLAG_INT_RX)
- {
- rt_memset(uart->int_rx->rx_buffer, 0,
- sizeof(uart->int_rx->rx_buffer));
- uart->int_rx->read_index = uart->int_rx->save_index = 0;
- }
-
- if (dev->flag & RT_DEVICE_FLAG_INT_TX)
- {
- rt_memset(uart->int_tx->tx_buffer, 0,
- sizeof(uart->int_tx->tx_buffer));
- uart->int_tx->write_index = uart->int_tx->save_index = 0;
- }
-
- dev->flag |= RT_DEVICE_FLAG_ACTIVATED;
- }
-
- return RT_EOK;
-}
-
-/* save a char to serial buffer */
-static void rt_serial_savechar(struct serial_device* uart, char ch)
-{
- rt_base_t level;
-
- /* disable interrupt */
- level = rt_hw_interrupt_disable();
-
- uart->int_rx->rx_buffer[uart->int_rx->save_index] = ch;
- uart->int_rx->save_index ++;
- if (uart->int_rx->save_index >= UART_RX_BUFFER_SIZE)
- uart->int_rx->save_index = 0;
-
- /* if the next position is read index, discard this 'read char' */
- if (uart->int_rx->save_index == uart->int_rx->read_index)
- {
- uart->int_rx->read_index ++;
- if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)
- uart->int_rx->read_index = 0;
- }
-
- /* enable interrupt */
- rt_hw_interrupt_enable(level);
-}
-
-static rt_err_t rt_serial_open(rt_device_t dev, rt_uint16_t oflag)
-{
- RT_ASSERT(dev != RT_NULL);
-
- return RT_EOK;
-}
-
-static rt_err_t rt_serial_close(rt_device_t dev)
-{
- RT_ASSERT(dev != RT_NULL);
-
- return RT_EOK;
-}
-
-static rt_size_t rt_serial_read(rt_device_t dev, rt_off_t pos, void* buffer, rt_size_t size)
-{
- rt_uint8_t* ptr;
- rt_err_t err_code;
- struct serial_device* uart;
-
- ptr = buffer;
- err_code = RT_EOK;
- uart = (struct serial_device*)dev->user_data;
-
- if (ptr == RT_NULL)
- {
- err_code = -RT_ENOMEM;
- rt_set_errno(err_code);
- return -RT_ENOMEM;
- }
- if (dev->flag & RT_DEVICE_FLAG_INT_RX)
- {
- rt_base_t level;
-
- /* interrupt mode Rx */
- while (size)
- {
- if (uart->int_rx->read_index != uart->int_rx->save_index)
- {
- *ptr++ = uart->int_rx->rx_buffer[uart->int_rx->read_index];
- size --;
-
- /* disable interrupt */
- level = rt_hw_interrupt_disable();
-
- uart->int_rx->read_index ++;
- if (uart->int_rx->read_index >= UART_RX_BUFFER_SIZE)
- uart->int_rx->read_index = 0;
-
- /* enable interrupt */
- rt_hw_interrupt_enable(level);
- }
- else
- {
- /* set error code */
- err_code = -RT_EEMPTY;
- break;
- }
- }
- }
- else
- {
- /* polling mode */
- while ((rt_uint32_t)ptr - (rt_uint32_t)buffer < size)
- {
- while (uart->uart_device->ustat & USTAT_RCV_READY)
- {
- *ptr = uart->uart_device->urxh & 0xff;
- ptr ++;
- }
- }
- }
-
- /* set error code */
- rt_set_errno(err_code);
- return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
-}
-
-static rt_size_t rt_serial_write(rt_device_t dev, rt_off_t pos, const void* buffer, rt_size_t size)
-{
- rt_uint8_t* ptr;
- rt_err_t err_code;
- struct serial_device* uart;
-
- err_code = RT_EOK;
- ptr = (rt_uint8_t*)buffer;
- uart = (struct serial_device*)dev->user_data;
-
- if (ptr == RT_NULL)
- {
- err_code = -RT_ENOMEM;
- rt_set_errno(err_code);
- return -RT_ENOMEM;
- }
- if (dev->flag & RT_DEVICE_FLAG_INT_TX)
- {
- /* interrupt mode Tx */
- while (uart->int_tx->save_index != uart->int_tx->write_index)
- {
- /* save on tx buffer */
- uart->int_tx->tx_buffer[uart->int_tx->save_index] = *ptr++;
-
- -- size;
-
- /* move to next position */
- uart->int_tx->save_index ++;
-
- /* wrap save index */
- if (uart->int_tx->save_index >= UART_TX_BUFFER_SIZE)
- uart->int_tx->save_index = 0;
- }
-
- /* set error code */
- if (size > 0)
- err_code = -RT_EFULL;
- }
- else
- {
- /* polling mode */
- while (size)
- {
- /*
- * to be polite with serial console add a line feed
- * to the carriage return character
- */
- if (*ptr == '\n' && (dev->flag & RT_DEVICE_FLAG_STREAM))
- {
- while (!(uart->uart_device->ustat & USTAT_TXB_EMPTY));
- uart->uart_device->utxh = '\r';
- }
-
- while (!(uart->uart_device->ustat & USTAT_TXB_EMPTY));
- uart->uart_device->utxh = (*ptr & 0xFF);
-
- ++ptr;
- --size;
- }
- }
-
- /* set error code */
- rt_set_errno(err_code);
- return (rt_uint32_t)ptr - (rt_uint32_t)buffer;
-}
-
-static rt_err_t rt_serial_control(rt_device_t dev, int cmd, void *args)
-{
- RT_ASSERT(dev != RT_NULL);
-
- switch (cmd)
- {
- case RT_DEVICE_CTRL_SUSPEND:
- /* suspend device */
- dev->flag |= RT_DEVICE_FLAG_SUSPENDED;
- break;
-
- case RT_DEVICE_CTRL_RESUME:
- /* resume device */
- dev->flag &= ~RT_DEVICE_FLAG_SUSPENDED;
- break;
- }
-
- return RT_EOK;
-}
-
-/*
- * serial register
- */
-rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial)
-{
- RT_ASSERT(device != RT_NULL);
-
- device->type = RT_Device_Class_Char;
- device->rx_indicate = RT_NULL;
- device->tx_complete = RT_NULL;
- device->init = rt_serial_init;
- device->open = rt_serial_open;
- device->close = rt_serial_close;
- device->read = rt_serial_read;
- device->write = rt_serial_write;
- device->control = rt_serial_control;
- device->user_data = serial;
-
- /* register a character device */
- return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR | flag);
-}
-
-/* ISR for serial interrupt */
-void rt_hw_serial_isr(rt_device_t device)
-{
- struct serial_device* uart = (struct serial_device*) device->user_data;
-
- /* interrupt mode receive */
- RT_ASSERT(device->flag & RT_DEVICE_FLAG_INT_RX);
-
- /* save on rx buffer */
- while (uart->uart_device->ustat & USTAT_RCV_READY)
- {
- rt_serial_savechar(uart, uart->uart_device->urxh & 0xff);
- }
-
- /* invoke callback */
- if (device->rx_indicate != RT_NULL)
- {
- rt_size_t rx_length;
-
- /* get rx length */
- rx_length = uart->int_rx->read_index > uart->int_rx->save_index ?
- UART_RX_BUFFER_SIZE - uart->int_rx->read_index + uart->int_rx->save_index :
- uart->int_rx->save_index - uart->int_rx->read_index;
-
- device->rx_indicate(device, rx_length);
- }
-}
-
-/*@}*/
diff --git a/libcpu/arm/s3c24x0/serial.h b/libcpu/arm/s3c24x0/serial.h
deleted file mode 100644
index 8a647ef35f..0000000000
--- a/libcpu/arm/s3c24x0/serial.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * Copyright (c) 2006-2018, RT-Thread Development Team
- *
- * SPDX-License-Identifier: Apache-2.0
- *
- * Change Logs:
- * Date Author Notes
- */
-#ifndef __RT_HW_SERIAL_H__
-#define __RT_HW_SERIAL_H__
-
-#include <rthw.h>
-#include <rtthread.h>
-
-#include "s3c24x0.h"
-
-#define USTAT_RCV_READY 0x01 /* receive data ready */
-#define USTAT_TXB_EMPTY 0x02 /* tx buffer empty */
-#define BPS 115200 /* serial baudrate */
-
-#define UART_RX_BUFFER_SIZE 64
-#define UART_TX_BUFFER_SIZE 64
-
-struct serial_int_rx
-{
- rt_uint8_t rx_buffer[UART_RX_BUFFER_SIZE];
- rt_uint32_t read_index, save_index;
-};
-
-struct serial_int_tx
-{
- rt_uint8_t tx_buffer[UART_TX_BUFFER_SIZE];
- rt_uint32_t write_index, save_index;
-};
-
-typedef struct uartport
-{
- volatile rt_uint32_t ulcon;
- volatile rt_uint32_t ucon;
- volatile rt_uint32_t ufcon;
- volatile rt_uint32_t umcon;
- volatile rt_uint32_t ustat;
- volatile rt_uint32_t urxb;
- volatile rt_uint32_t ufstat;
- volatile rt_uint32_t umstat;
- volatile rt_uint32_t utxh;
- volatile rt_uint32_t urxh;
- volatile rt_uint32_t ubrd;
-}uartport;
-
-struct serial_device
-{
- uartport* uart_device;
-
- /* rx structure */
- struct serial_int_rx* int_rx;
-
- /* tx structure */
- struct serial_int_tx* int_tx;
-};
-
-rt_err_t rt_hw_serial_register(rt_device_t device, const char* name, rt_uint32_t flag, struct serial_device *serial);
-
-void rt_hw_serial_isr(rt_device_t device);
-
-#endif
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