helping F7 uart

firmware/config/boards/hellen/alphax-4chan/board.mk

@@ -18,10 +18,7 @@ DDEFS += -DDISABLE_PIN_STATE_VALIDATION=TRUE
 
 include $(BOARDS_DIR)/hellen/hellen-common144.mk
 
-# serial ports only on F4
-ifeq ($(PROJECT_CPU),ARCH_STM32F4)
-	DDEFS += $(PRIMARY_COMMUNICATION_PORT_USART2)
-endif
+DDEFS += $(PRIMARY_COMMUNICATION_PORT_USART2)
 
 ifeq ($(PROJECT_CPU),ARCH_STM32F7)
 	DDEFS += -DSHORT_BOARD_NAME=alphax-4chan-f7

firmware/console/binary/tunerstudio_io_serial.cpp

@@ -46,11 +46,16 @@ void UartTsChannel::start(uint32_t baud) {
 		.rxchar_cb		= NULL,
 		.rxerr_cb		= NULL,
 		.timeout_cb		= NULL,
+#if defined(STM32F7XX)
+		.timeout        = 0,
+#endif
 		.speed 			= baud,
 		.cr1 			= 0,
 		.cr2 			= USART_CR2_STOP1_BITS | USART_CR2_LINEN,
 		.cr3 			= 0,
+#if defined(STM32F4XX)
 		.rxhalf_cb		= NULL
+#endif
 	};
 
 	uartStart(m_driver, &m_config);