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