add uart printf log into hw/bsp/stm32f1

fix hw/bsp/stm32f1/stm32f1xx_hal_conf.h's HAL_CORTEX_MODULE_ENABLED

hw/bsp/stm32f1/boards/stm32f103_bluepill/board.h

@@ -42,12 +42,12 @@
 #define BUTTON_STATE_ACTIVE   1
 
 // UART
-//#define UART_DEV              USART1
-//#define UART_CLK_EN           __HAL_RCC_USART1_CLK_ENABLE
-//#define UART_GPIO_PORT        GPIOA
+#define UART_DEV              USART1
+#define UART_CLK_EN           __HAL_RCC_USART1_CLK_ENABLE
+#define UART_GPIO_PORT        GPIOA
 //#define UART_GPIO_AF          GPIO_AF1_USART1
-//#define UART_TX_PIN           GPIO_PIN_9
-//#define UART_RX_PIN           GPIO_PIN_10
+#define UART_TX_PIN           GPIO_PIN_9
+#define UART_RX_PIN           GPIO_PIN_10
 
 //--------------------------------------------------------------------+
 // RCC Clock

hw/bsp/stm32f1/family.c

@@ -46,6 +46,7 @@ void USBWakeUp_IRQHandler(void) {
 //--------------------------------------------------------------------+
 // MACRO TYPEDEF CONSTANT ENUM
 //--------------------------------------------------------------------+
+UART_HandleTypeDef UartHandle;
 
 void board_init(void) {
   board_stm32f1_clock_init();
@@ -56,6 +57,9 @@ void board_init(void) {
   __HAL_RCC_GPIOC_CLK_ENABLE();
   __HAL_RCC_GPIOD_CLK_ENABLE();
 
+  // Enable UART Clock
+  UART_CLK_EN();
+
 #if CFG_TUSB_OS == OPT_OS_NONE
   // 1ms tick timer
   SysTick_Config(SystemCoreClock / 1000);
@@ -82,6 +86,26 @@ void board_init(void) {
   GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
   HAL_GPIO_Init(BUTTON_PORT, &GPIO_InitStruct);
 
+  // UART
+  GPIO_InitStruct.Pin = UART_TX_PIN | UART_RX_PIN;
+  GPIO_InitStruct.Mode = GPIO_MODE_AF_PP;
+  GPIO_InitStruct.Pull = GPIO_PULLUP;
+  GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_HIGH;
+  //GPIO_InitStruct.Alternate = UART_GPIO_AF;
+  HAL_GPIO_Init(UART_GPIO_PORT, &GPIO_InitStruct);
+
+  UartHandle = (UART_HandleTypeDef) {
+      .Instance        = UART_DEV,
+      .Init.BaudRate   = CFG_BOARD_UART_BAUDRATE,
+      .Init.WordLength = UART_WORDLENGTH_8B,
+      .Init.StopBits   = UART_STOPBITS_1,
+      .Init.Parity     = UART_PARITY_NONE,
+      .Init.HwFlowCtl  = UART_HWCONTROL_NONE,
+      .Init.Mode       = UART_MODE_TX_RX,
+      .Init.OverSampling = UART_OVERSAMPLING_16
+  };
+  HAL_UART_Init(&UartHandle);
+
   // USB Pins
   // Configure USB DM and DP pins.
   GPIO_InitStruct.Pin = (GPIO_PIN_11 | GPIO_PIN_12);
@@ -127,9 +151,8 @@ int board_uart_read(uint8_t *buf, int len) {
 }
 
 int board_uart_write(void const *buf, int len) {
-  (void) buf;
-  (void) len;
-  return 0;
+  HAL_UART_Transmit(&UartHandle, (uint8_t *) (uintptr_t) buf, len, 0xffff);
+  return len;
 }
 
 #if CFG_TUSB_OS == OPT_OS_NONE

hw/bsp/stm32f1/family.mk

@@ -18,6 +18,9 @@ CFLAGS_GCC += \
   -flto \
   -nostdlib -nostartfiles \
 
+# mcu driver cause following warnings
+CFLAGS_GCC += -Wno-error=cast-align
+
 LDFLAGS_GCC += -specs=nosys.specs -specs=nano.specs
 
 # ------------------------
@@ -30,7 +33,8 @@ SRC_C += \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_cortex.c \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_rcc.c \
   $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_rcc_ex.c \
-  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_gpio.c
+  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_gpio.c \
+  $(ST_HAL_DRIVER)/Src/stm32$(ST_FAMILY)xx_hal_uart.c
 
 INC += \
   $(TOP)/$(BOARD_PATH) \

hw/bsp/stm32f1/stm32f1xx_hal_conf.h

@@ -38,7 +38,7 @@
 /* #define HAL_ADC_MODULE_ENABLED */
 /* #define HAL_CAN_MODULE_ENABLED */
 /* #define HAL_CAN_LEGACY_MODULE_ENABLED */
-#define HAL_CORTEX_MODULE_ENABLED */
+#define HAL_CORTEX_MODULE_ENABLED
 /* #define HAL_CRC_MODULE_ENABLED */
 /* #define HAL_DAC_MODULE_ENABLED */
 #define HAL_DMA_MODULE_ENABLED