iar g4

.github/workflows/build_iar.yml

@@ -31,6 +31,7 @@ jobs:
         - 'stm32f1'
         - 'stm32f4'
         - 'stm32f7'
+        - 'stm32g4'
         - 'stm32h7'
     steps:
     - name: Clean workspace

hw/bsp/stm32g4/boards/stm32g474nucleo/board.mk

@@ -2,9 +2,13 @@ CFLAGS += \
 	-DSTM32G474xx \
 	-DHSE_VALUE=24000000
 
-LD_FILE = $(BOARD_PATH)/STM32G474RETx_FLASH.ld
+# GCC
+GCC_SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32g474xx.s
+GCC_LD_FILE = $(BOARD_PATH)/STM32G474RETx_FLASH.ld
 
-SRC_S += $(ST_CMSIS)/Source/Templates/gcc/startup_stm32g474xx.s
+# IAR
+IAR_SRC_S += $(ST_CMSIS)/Source/Templates/iar/startup_stm32g474xx.s
+IAR_LD_FILE = $(ST_CMSIS)/Source/Templates/iar/linker/stm32g474xx_flash.icf
 
 # For flash-jlink target
 JLINK_DEVICE = stm32g474re

hw/bsp/stm32g4/family.c

@@ -137,7 +137,8 @@ void board_init(void)
 
 void board_led_write(bool state)
 {
-  HAL_GPIO_WritePin(LED_PORT, LED_PIN, state ? LED_STATE_ON : (1-LED_STATE_ON));
+  GPIO_PinState pin_state = (GPIO_PinState) (state ? LED_STATE_ON : (1-LED_STATE_ON));
+  HAL_GPIO_WritePin(LED_PORT, LED_PIN, pin_state);
 }
 
 uint32_t board_button_read(void)
@@ -177,7 +178,7 @@ uint32_t board_millis(void)
 
 void HardFault_Handler (void)
 {
-  asm("bkpt");
+  __asm("BKPT #0\n");
 }
 
 // Required by __libc_init_array in startup code if we are compiling using

hw/bsp/stm32g4/family.mk

@@ -7,7 +7,14 @@ ST_HAL_DRIVER = hw/mcu/st/stm32$(ST_FAMILY)xx_hal_driver
 
 include $(TOP)/$(BOARD_PATH)/board.mk
 
+# --------------
+# Compiler Flags
+# --------------
 CFLAGS += \
+  -DCFG_TUSB_MCU=OPT_MCU_STM32G4
+  
+# GCC Flags
+GCC_CFLAGS += \
   -flto \
   -mthumb \
   -mabi=aapcs \
@@ -15,10 +22,17 @@ CFLAGS += \
   -mfloat-abi=hard \
   -mfpu=fpv4-sp-d16 \
   -nostdlib -nostartfiles \
-  -DCFG_TUSB_MCU=OPT_MCU_STM32G4
 
 # suppress warning caused by vendor mcu driver
-CFLAGS += -Wno-error=cast-align
+GCC_CFLAGS += -Wno-error=cast-align
+
+# IAR Flags
+IAR_CFLAGS += --cpu cortex-m4 --fpu VFPv4
+IAR_ASFLAGS += --cpu cortex-m4 --fpu VFPv4
+
+# -----------------
+# Sources & Include
+# -----------------
 
 SRC_C += \
 	src/portable/st/stm32_fsdev/dcd_stm32_fsdev.c \