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/*
* uart.cpp
*
* Created on: 26.02.2022
* Author: steffen
* SPDX-FileCopyrightText: 2022 MDC Service <info@mdc-service.de>
* SPDX-License-Identifier: GPL-3.0-or-later
*/
#include "uart.h"
/**
* UART_init: initalization of the UARTS
*
*/
void UART_init(void) {
int intr_alloc_flags = ESP_INTR_FLAG_IRAM;
vTaskDelay(100);
#ifdef DEBUG
printf("LCD\n");
fflush(stdout);
#endif
uart_config_t lcd_uart_config = {
.baud_rate = LCD_UART_BAUD_RATE,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
ESP_ERROR_CHECK(uart_driver_install(LCD_UART_CHANNEL, READ_BUF_SIZE * 2, 0, 0, NULL, intr_alloc_flags));
ESP_ERROR_CHECK(uart_param_config(LCD_UART_CHANNEL, &lcd_uart_config));
ESP_ERROR_CHECK(uart_set_pin(LCD_UART_CHANNEL, LCD_UART_TX_PIN, LCD_UART_RX_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
#ifdef DEBUG
printf("UHF\n");
fflush(stdout);
#endif
uart_config_t uhf_uart_config = {
.baud_rate = UHF_UART_BAUD_RATE,
.data_bits = UART_DATA_8_BITS,
.parity = UART_PARITY_DISABLE,
.stop_bits = UART_STOP_BITS_1,
.flow_ctrl = UART_HW_FLOWCTRL_DISABLE,
.source_clk = UART_SCLK_APB,
};
ESP_ERROR_CHECK(uart_driver_install(UHF_UART_CHANNEL, READ_BUF_SIZE * 2, 0, 0, NULL, intr_alloc_flags));
ESP_ERROR_CHECK(uart_param_config(UHF_UART_CHANNEL, &uhf_uart_config));
ESP_ERROR_CHECK(uart_set_pin(UHF_UART_CHANNEL, UHF_UART_TX_PIN, UHF_UART_RX_PIN, UART_PIN_NO_CHANGE, UART_PIN_NO_CHANGE));
}
/**
* UART_read: read from UART
*
* @param channel channel to read from.
* @param buf result buffer.
* @param len length of the result buffer.
* @returns number of bytes read.
*/
int UART_read(int channel, void *buf, int len = READ_BUF_SIZE) {
return (uart_read_bytes(channel, buf, len, 1));
}
/**
* UART_write: write to UART
*
* @param channel channel to read from.
* @param buf writing buffer.
* @param len length of the writing buffer.
* @returns number of bytes written.
*/
int UART_write(int channel, void *buf, int len) {
return (uart_write_bytes(channel, serout, len));
}
/**
* UART_debug: write a debug msg to UART
*
* @param buf writing buffer.
* @param len length of the writing buffer.
*/
void UART_debug(char *buf, int len) {
UART_write(0, (void*) buf, len);
}
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