ESP32 Forum

Code: Select all

UART_InitTypeDef uart_init;
uart_init.num = UART_NUM_1;
uart_init.baud_rate = 57600;
uart_init.data_bits = UART_DATA_8_BITS;
uart_init.parity = UART_PARITY_DISABLE;
uart_init.stop_bits = UART_STOP_BITS_1;
uart_init.flow_ctrl = UART_HW_FLOWCTRL_DISABLE;
uart_init.rx_flow_ctrl_thresh = 122;
uart_init.rts_pin = 0;
uart_init.cts_pin = 0;
uart_init.tx_pin = 16;
uart_init.rx_pin = 17;
uart_init.buffer_size = 1024;
UART uart(&uart_init);
FreeRTOS::sleep(1000); // need a delay for initialisation

ModbusMaster modbus(uart);
uint8_t* dat = new uint8_t[6];
modbus.build_query_basis(0x0001, 0x0004, 0x0003, 0x0001, dat);

uint8_t* inBuffer = (uint8_t*) malloc(1024);
for (;;) {
	modbus.send(dat, modbus.compute_response_length(dat)); // this is my data protocoll, wich I want to send
	while (!uart.available()) {     // waiting for uart interrupt
		FreeRTOS::sleep(100);
	}
	
	int len = uart.getBufferedLength();
	inBuffer = uart.read();	// read data (is correct an validated)
	
	printf("DATA>>"); // I can see this on my uart[1]
	for (int i = 0; i < len; i++)
		printf("%c", inBuffer[i]); // I can see this on my uart[1]
	printf("<<\n");  // I can see this on my uart[1] 
	
	FreeRTOS::sleep(1000);
}

Code: Select all

UART::UART(const UART_InitTypeDef* uart_conf) {
	//this->num = DEFAULT_UART_num;
	//this->buffer_size = DEFAULT_UART_buffer_size;

	this->num = uart_conf->num;
	this->buffer_size = uart_conf->buffer_size;
	this->err = ESP_OK;

	receiveBuffer = (uint8_t*) malloc(buffer_size);
	receiveBuffer_len = 0;

	uart_config_t uart_config;
	uart_config.baud_rate = uart_conf->baud_rate;
	uart_config.data_bits = uart_conf->data_bits;
	uart_config.parity = uart_conf->parity;
	uart_config.stop_bits = uart_conf->stop_bits;
	uart_config.flow_ctrl = uart_conf->flow_ctrl;
	uart_config.rx_flow_ctrl_thresh = uart_conf->rx_flow_ctrl_thresh;

	if (!UART_driverInstalled[num]) {

		sprintf(debugTag, "uart[%d]", (uint8_t) num);
		sprintf(_taskName, "%s_eventTask", debugTag);
		esp_log_level_set(debugTag, ESP_LOG_INFO);

		//Configure UART1 parameters
		uart_param_config(num, &uart_config);
		//Set UART pins
		uart_set_pin(num, uart_conf->tx_pin, uart_conf->rx_pin,
				uart_conf->rts_pin, uart_conf->cts_pin);

		uart_driver_install(num, buffer_size * 2, buffer_size * 2, 10,
				&uart_queue, 0);

		//Set uart pattern detect function.
		//uart_enable_pattern_det_intr(num, '+', 3, 10000, 10, 10);
		//Create a task to handler UART event from ISR
		xTaskCreatePinnedToCore(&uart_taskfunwrapper, _taskName, 2048, this, 12,
		NULL, 0);

		UART_driverInstalled[num] = true;
	}
}