比如uart_rx_intr_handler_default函数在IRAM内,那么uart_ll_is_tx_idle的逻辑也就在IRAM里,事实上这是理想状态而已。 就是这个假设引起了bug! 我观察的现象为:uart.c里有三处代码调用了uart_ll_is_tx_idle内联函数,但是在编译器配置为-Os的情况下,它自作聪明地把uart_ll_is_tx_idle函数编译成非内联函数!
esp_err_tuart_set_pin(uart_port_t uart_num,int tx_io_num,int rx_io_num,int rts_io_num,int cts_io_num); 2.5、从接收缓冲区读取数据 代码语言:javascript 代码运行次数:0 运行 AI代码解释 intuart_read_bytes(uart_port_t uart_num,uint8_t*buf,uint32_t length,TickType_t ticks_to_wait)...
在使用uart的select来接收数据时, 传入read函数的buflen小于输入缓冲区内已经接收到的数据, 仅在第一次调用select函数时可以正确的执行,然后recv 指定长度的数据; 当我第二次调用select函数时, 它会提醒我timeout,但是此时输入缓冲区内依然还有数据没有被recv; 当然,每一次调用select之前都已经使用FD_ZERO和FD_...
//and `uart_rx_intr_handler_default` are scheduled on the same core. continue; } else { xSemaphoreGive(p_uart_obj[uart_num]->rx_mux); return copy_len; } } } if(p_uart_obj[uart_num]->rx_cur_remain > length) { len_tmp = length; } else { len_tmp = p_uart_obj[uart_num]...
NUM_0, 256,0, 0, NULL, 0); uart_isr_free(UART_NUM_0); //micropython对串口的初始化代码如下void uart_init(void) {uart_isr_handle_t handle;uart_isr_register(UART_NUM_0, uart_irq_handler, NULL, ESP_INTR_FLAG_LOWMED | ESP_INTR_FLAG_IRAM, &handle);uart_enable_rx_intr(UART_NUM_...
0x400d2af0: uart_rx_intr_handler_default at /Users/ficeto/Desktop/ESP32/ESP32S2/esp-idf-public/components/driver/uart.c line 973 ---md5 unmatched--- . . . Wrote 258608 bytes (143168 compressed) at 0x00010000 in 1.9 seconds (effective 1103.4 kbit/s)... File md5: b89e48b6d830f98...
//IO口#defineSPEAKER_WS 7#defineSPEAKER_SCK 16#defineSPEAKER_DATA 6#defineUSART0_RX 44#defineUSART0_TX 43 NS4168简介 NS4168为D类功放,使用I2S协议。 NS4168是一款支持I2S数字音频信号输入,输出具有防失真功能,2.5W单声道D类音频功率放大器。NS4168特别适用于对功耗敏感而产生干扰的环境。比如蓝牙音响,WiF...
0x4008bedc: uart_rx_intr_handler_default at /home/mainr/esp/esp-idf/components/driver/uart.c:972 0x40082ff1: _xt_lowint1 at /home/mainr/esp/esp-idf/components/freertos/port/xtensa/xtensa_vectors.S:1111 0x4008c96a: spi_flash_op_block_func at /home/mainr/esp/esp-idf/components/spi...
22 uart_enable_pattern_det_intr(uart_num, '+', 3, 10000, 10, 10); 23 //Create a task to handler UART event from ISR 24 xTaskCreate(uart_task, "uart_task", 2048, (void*)uart_num, 12, NULL); 25 //process data 26 uint8_t* data = (uint8_t*) malloc(BUF_SIZE); 27 do {...
PIN_NO_CHANGE);//Set uart pattern detect function.uart_enable_pattern_det_baud_intr(EX_UART_...