huxi
88 lines
2.3 KiB
C
88 lines
2.3 KiB
C
#ifdef SUPPORT_MS_EXTENSIONS
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#pragma bss_seg(".uart_test.data.bss")
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#pragma data_seg(".uart_test.data")
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#pragma const_seg(".uart_test.text.const")
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#pragma code_seg(".uart_test.text")
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#endif
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#include "system/includes.h"
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#include "uart.h"
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#include "debug.h"
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static void uart_irq_func(int uart_num, enum uart_event event)
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{
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if (event & UART_EVENT_TX_DONE) {
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printf("uart[%d] tx done", uart_num);
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}
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if (event & UART_EVENT_RX_TIMEOUT) {
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printf("uart[%d] rx timerout data", uart_num);
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}
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if (event & UART_EVENT_RX_FIFO_OVF) {
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printf("uart[%d] rx fifo ovf", uart_num);
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}
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}
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struct uart_frame {
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u16 crc;
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u16 length;
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u8 data[0];
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};
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void uart_sync_demo(void *p)
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{
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const struct uart_config config = {
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.baud_rate = 2000000,
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.tx_pin = IO_PORTA_04,
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.rx_pin = IO_PORTA_02,
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.parity = UART_PARITY_DISABLE,
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.tx_wait_mutex = 0,//1:不支持中断调用,互斥,0:支持中断,不互斥
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};
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void *uart_rx_ptr = dma_malloc(768);
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const struct uart_dma_config dma = {
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.rx_timeout_thresh = 3 * 10000000 / config.baud_rate, //单位:us,公式：3*10000000/baud(ot:3个byte时间)
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.event_mask = UART_EVENT_TX_DONE | UART_EVENT_RX_FIFO_OVF | UART_EVENT_RX_TIMEOUT,
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.irq_priority = 3,
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.irq_callback = uart_irq_func,
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.rx_cbuffer = uart_rx_ptr,
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.rx_cbuffer_size = 768,
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.frame_size = 768,//=rx_cbuffer_size
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};
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printf("************uart demo***********\n");
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int r;
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uart_dev uart_id = 1;
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int ut = uart_init(uart_id, &config);
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if (ut < 0) {
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printf("uart(%d) init error\n", ut);
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} else {
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printf("uart(%d) init ok\n", ut);
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}
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r = uart_dma_init(uart_id, &dma);
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if (r < 0) {
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printf("uart(%d) dma init error\n", ut);
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} else {
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printf("uart(%d) dma init ok\n", ut);
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}
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uart_dump();
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struct uart_frame *frame = (struct uart_frame *)dma_malloc(512);
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while (1) {
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r = uart_recv_blocking(uart_id, frame, 512, 10);
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if (r > 0) { //ok
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printf("r:%d\n", r);
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printf_buf((u8 *)frame, r);
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}
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r = uart_send_blocking(uart_id, frame, r, 20);
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}
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}
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void uart_demo()
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{
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int err = task_create(uart_sync_demo, NULL, "periph_demo");
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if (err != OS_NO_ERR) {
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r_printf("creat fail %x\n", err);
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}
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}
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