106 lines
2.3 KiB
C
106 lines
2.3 KiB
C
#include "HC-04.h"
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#include "common.h"
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uint8_t HC04_DATA[1024] = { 0 };
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int HC04_DATA_LEN = 0;
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int HC_04_UART_INIT(int pio)
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{
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// 初始化UART
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if (pio == 1) {
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uint tx_offset = pio_add_program(HC_04_PIO, &uart_tx_program);
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uart_tx_program_init(HC_04_PIO, HC_04_PIO_SM_TX, tx_offset, HC_04_PIO_TX_PIN, HC_04_PIO_SERIAL_BAUD);
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uint rx_offset = pio_add_program(HC_04_PIO, &uart_rx_program);
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uart_rx_program_init(HC_04_PIO, HC_04_PIO_SM_RX, rx_offset, HC_04_PIO_RX_PIN, HC_04_PIO_SERIAL_BAUD);
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}
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return 0;
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}
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int HC_04_PIO_UART_TX_DATA(PIO pio, uint sm, char *DATA, int DATA_LEN)
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{
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for (int i = 0; i < DATA_LEN; i++) {
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uart_tx_program_putc(pio, sm, DATA[i]);
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sleep_ms(1);
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}
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return 0;
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}
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int HC_04_PIO_UART_RX_DATA(PIO pio, uint sm, uint8_t * DATA, int DATA_LEN)
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{
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char c = '\0';
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int received_count = 0;
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int timeout_ms = 1000; // 设置较长的超时时间
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while (received_count < DATA_LEN && timeout_ms > 0) {
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if (uart_rx_program_available(pio, sm)) {
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c = uart_rx_program_getc(pio, sm);
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DATA[received_count++] = c;
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//printf("0x%X ", c);
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} else {
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// 没有接收到数据，继续等待
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sleep_ms(2);
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timeout_ms--;
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}
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}
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if (received_count == 0) {
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// 没有接收到有效数据
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return -1;
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}
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return received_count;
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}
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void HC_04_UART_WRITE(void *p)
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{
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(void)p;
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/*
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AT+RESET // 重启
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AT+RX // 查询模块多个参数
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*/
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char _CMD0[] = "AT+RX"; // 查询
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// 发送数据
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HC_04_PIO_UART_TX_DATA(HC_04_PIO, HC_04_PIO_SM_TX, _CMD0, sizeof(_CMD0));
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}
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void HC_04_UART_READ(void *p)
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{
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(void)p;
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//printf("HC-04 Module\n");
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memset(HC04_DATA, 0, 1024);
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if (0 >= HC_04_PIO_UART_RX_DATA(HC_04_PIO, HC_04_PIO_SM_RX, HC04_DATA, 270)) {
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;
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} else {
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if (0 < strlen((char *)HC04_DATA)) {
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printf("%s\n", HC04_DATA);
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memset(HC04_DATA, 0, 1024);
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}
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}
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return;
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}
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void HC_04(void *p)
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{
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(void)p;
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HC_04_UART_INIT(1);
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while (1) {
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HC_04_UART_WRITE(NULL);
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HC_04_UART_READ(NULL);
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printf("\n");
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vTaskDelay(pdMS_TO_TICKS(3000)); // 非阻塞延时
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}
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return ;
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}
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