Update UARTs for stm32f4xx discovery boards. Other minor cleanups.

hw/bsp/stm32f407disco/board.mk

@@ -19,8 +19,8 @@ SRC_C += \
 	$(ST_CMSIS)/Source/Templates/system_stm32f4xx.c \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal.c \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_cortex.c \
-	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_uart.c \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_rcc.c \
+	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_uart.c \
 	$(ST_HAL_DRIVER)/Src/stm32f4xx_hal_gpio.c
 
 SRC_S += \

hw/bsp/stm32f407disco/stm32f407disco.c

@@ -36,7 +36,6 @@
 #define BUTTON_PIN            GPIO_PIN_0
 #define BUTTON_STATE_ACTIVE   1
 
-
 // Enable PA2 as the debug log UART
 // It is not routed to the ST/Link on the Discovery board.
 #define UARTx                 USART2
@@ -114,7 +113,7 @@ void board_init(void)
   SystemClock_Config();
   all_rcc_clk_enable();
 
-#if CFG_TUSB_OS  == OPT_OS_NONE
+#if CFG_TUSB_OS == OPT_OS_NONE
   // 1ms tick timer
   SysTick_Config(SystemCoreClock / 1000);
 #elif CFG_TUSB_OS == OPT_OS_FREERTOS

hw/bsp/stm32f407disco/stm32f4xx_hal_conf.h

@@ -68,7 +68,7 @@
 /* #define HAL_SD_MODULE_ENABLED       */
 // #define HAL_SPI_MODULE_ENABLED
 /* #define HAL_TIM_MODULE_ENABLED      */
-/* #define HAL_UART_MODULE_ENABLED     */
+#define HAL_UART_MODULE_ENABLED
 /* #define HAL_USART_MODULE_ENABLED    */ 
 /* #define HAL_IRDA_MODULE_ENABLED     */
 /* #define HAL_SMARTCARD_MODULE_ENABLED */