79 lines
1.7 KiB
C
79 lines
1.7 KiB
C
/*
|
|
* Copyright (c) 2006-2020, RT-Thread Development Team
|
|
*
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*
|
|
* Change Logs:
|
|
* Date Author Notes
|
|
*/
|
|
|
|
#include <rtdevice.h>
|
|
#include <rtthread.h>
|
|
#include <am.h>
|
|
#include <klib.h>
|
|
|
|
#define UART_DEFAULT_BAUDRATE 115200
|
|
|
|
struct device_uart {
|
|
rt_ubase_t hw_base;
|
|
rt_uint32_t irqno;
|
|
};
|
|
|
|
static void *uart0_base = (void*)0x10000000;
|
|
static struct rt_serial_device serial0;
|
|
static struct device_uart uart0;
|
|
|
|
static rt_err_t _uart_configure(struct rt_serial_device *serial, struct serial_configure *cfg) {
|
|
return (RT_EOK);
|
|
}
|
|
|
|
static rt_err_t _uart_control(struct rt_serial_device *serial, int cmd, void *arg) {
|
|
return (RT_EOK);
|
|
}
|
|
|
|
static int _uart_putc(struct rt_serial_device *serial, char c) {
|
|
putch(c);
|
|
return 1;
|
|
}
|
|
|
|
static int _uart_getc(struct rt_serial_device *serial) {
|
|
static const char *p = "help\n";
|
|
return (*p != '\0' ? *(p ++) : -1);
|
|
}
|
|
|
|
const struct rt_uart_ops _uart_ops = {
|
|
_uart_configure,
|
|
_uart_control,
|
|
_uart_putc,
|
|
_uart_getc,
|
|
// TODO: add DMA support
|
|
RT_NULL};
|
|
|
|
/*
|
|
* UART Initiation
|
|
*/
|
|
int rt_hw_uart_init(void) {
|
|
struct rt_serial_device *serial;
|
|
struct device_uart *uart;
|
|
struct serial_configure config = RT_SERIAL_CONFIG_DEFAULT;
|
|
// register device
|
|
serial = &serial0;
|
|
uart = &uart0;
|
|
|
|
serial->ops = &_uart_ops;
|
|
serial->config = config;
|
|
serial->config.baud_rate = UART_DEFAULT_BAUDRATE;
|
|
uart->hw_base = (rt_ubase_t)uart0_base;
|
|
uart->irqno = 0x0a;
|
|
|
|
rt_hw_serial_register(serial,
|
|
RT_CONSOLE_DEVICE_NAME,
|
|
RT_DEVICE_FLAG_STREAM | RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX,
|
|
uart);
|
|
return 0;
|
|
}
|
|
|
|
/* WEAK for SDK 0.5.6 */
|
|
rt_weak void uart_debug_init(int uart_channel)
|
|
{
|
|
}
|