1 files changed, 90 insertions, 0 deletions
diff --git a/software/main/uart.cpp b/software/main/uart.cpp
new file mode 100644
index 0000000..39a91b7
--- /dev/null
+++ b/software/main/uart.cpp
@@ -0,0 +1,90 @@
+/*
+ * 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);
+}
+
+