Disable uart interrupt in uart_debug_write

Author: benwaffle

cores/arduino/stm32/uart.c

@@ -557,18 +557,26 @@ size_t uart_write(serial_t *obj, uint8_t data, uint16_t size)
   */
 void uart_debug_init(void)
 {
-  if (DEBUG_UART != NP) {
-    serial_debug.pin_rx = pinmap_pin(DEBUG_UART, PinMap_UART_RX);
+  void *periph = DEBUG_UART;
+  if (periph != NP) {
+    serial_debug.pin_rx = pinmap_pin(periph, PinMap_UART_RX);
 #if defined(DEBUG_PINNAME_TX)
     serial_debug.pin_tx = DEBUG_PINNAME_TX;
 #else
-    serial_debug.pin_tx = pinmap_pin(DEBUG_UART, PinMap_UART_TX);
+    serial_debug.pin_tx = pinmap_pin(periph, PinMap_UART_TX);
 #endif
     serial_debug.baudrate = DEBUG_UART_BAUDRATE;
     serial_debug.parity = UART_PARITY_NONE;
     serial_debug.databits = UART_WORDLENGTH_8B;
     serial_debug.stopbits = UART_STOPBITS_1;
 
+    if (periph == USART1)
+      serial_debug.irq = USART1_IRQn;
+    else if (periph == USART2)
+      serial_debug.irq = USART2_IRQn;
+    else if (periph == USART3)
+      serial_debug.irq = USART3_IRQn;
+
     uart_init(&serial_debug);
   }
 }
@@ -607,12 +615,25 @@ size_t uart_debug_write(uint8_t *data, uint32_t size)
     index = serial_debug.index;
   }
 
+  IRQn_Type irq;
+
+  if (DEBUG_UART == USART1)
+    irq = USART1_IRQn;
+  else if (DEBUG_UART == USART2)
+    irq = USART2_IRQn;
+  else if (DEBUG_UART == USART3)
+    irq = USART3_IRQn;
+
+  HAL_NVIC_DisableIRQ(irq);
+
   while (HAL_UART_Transmit(uart_handlers[index], data, size, TX_TIMEOUT) != HAL_OK) {
     if ((HAL_GetTick() - tickstart) >=  TX_TIMEOUT) {
+      HAL_NVIC_EnableIRQ(irq);
       return 0;
     }
   }
 
+  HAL_NVIC_EnableIRQ(irq);
   return size;
 }