working receive

main.cpp

@@ -1,4 +1,5 @@
 #include <stm32f1xx_hal.h>
+#include <stm32f1xx_hal_uart.h>
 
 #include "logging.hpp"
 #include "spi.hpp"
@@ -27,6 +28,22 @@ void SysTick_Handler(void) {
   HAL_IncTick();
   HAL_SYSTICK_IRQHandler();
 }
+
+void USART1_IRQHandler(void) {
+  HAL_UART_IRQHandler(&uart_interface::s_UARTHandle);
+  HAL_UART_Receive_IT(&uart_interface::s_UARTHandle, uart_interface::get_buf(),
+                      1);
+}
+
+void HAL_UART_RxCpltCallback(UART_HandleTypeDef *huart) {
+  const char value = *reinterpret_cast<const char *>(uart_interface::get_buf());
+
+  if (value == '\r') {
+    HAL_GPIO_TogglePin(LED_PORT, LED2_PIN);
+  }
+
+  log::debug({&value, 1});
+}
 }
 
 void initGPIO() {
@@ -105,11 +122,9 @@ int main(void) {
   while (1) {
     // RF95_setModeRx_Continuous();
     HAL_GPIO_WritePin(LED_PORT, LED1_PIN, GPIO_PIN_RESET);
-    HAL_GPIO_WritePin(LED_PORT, LED2_PIN, GPIO_PIN_RESET);
     // RF95_receive(LoRa_buff);
     HAL_Delay(500);
     HAL_GPIO_WritePin(LED_PORT, LED1_PIN, GPIO_PIN_SET);
-    HAL_GPIO_WritePin(LED_PORT, LED2_PIN, GPIO_PIN_SET);
     HAL_Delay(500);
 
     // std::string_view msg{reinterpret_cast<char *>(LoRa_buff)};