ll hal uart tx
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154
myapps/practice/00-uart-tx/Makefile
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154
myapps/practice/00-uart-tx/Makefile
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######################################
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# target
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######################################
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TARGET = stm32g0_blinky
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PART = STM32G030xx
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PYOCD_TARGET = stm32g030f6px
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######################################
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# building variables
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######################################
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# debug build?
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DEBUG = 1
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# optimization for size
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OPT = -Os
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#######################################
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# paths
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#######################################
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# Build path
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BUILD_DIR = build
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VND_DIR = ../../../vendor
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######################################
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# source
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######################################
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# C sources
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include hal.mk
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C_SOURCES += \
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$(VND_DIR)/STM32CubeG0/Drivers/CMSIS/Device/ST/STM32G0xx/Source/Templates/system_stm32g0xx.c \
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src/main.c
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# ASM sources
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ASM_SOURCES = \
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$(VND_DIR)/STM32CubeG0/Drivers/CMSIS/Device/ST/STM32G0xx/Source/Templates/gcc/startup_stm32g030xx.s
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#######################################
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# binaries
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#######################################
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PREFIX = arm-none-eabi-
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CC = $(PREFIX)gcc
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CP = $(PREFIX)objcopy
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#SZ = $(PREFIX)size
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BIN = $(CP) -O binary -S
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#######################################
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# CFLAGS
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#######################################
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ifeq ($(DEBUG), 1)
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DEBUG_FLAGS = -gdwarf-3
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endif
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# cpu
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CPU = \
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-mcpu=cortex-m0plus
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DEFINES = -D$(PART)
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# fpu
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FPU =
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# float-abi
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FLOAT-ABI =
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# mcu
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MCU = $(CPU) $(FPU) $(FLOAT-ABI)
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# C includes
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C_INCLUDES += \
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-Isrc/inc \
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-I$(VND_DIR)/STM32CubeG0/Drivers/CMSIS/Core/Include \
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-I$(VND_DIR)/STM32CubeG0/Drivers/CMSIS/Device/ST/STM32G0xx/Include
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# compile gcc flags
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ADDN_CFLAGS = \
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-Wall \
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-fdata-sections \
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-ffunction-sections
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CFLAGS = $(MCU) $(ADDN_CFLAGS) $(C_INCLUDES) $(DEBUG_FLAGS) $(OPT) $(DEFINES)
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# Generate dependency information
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#CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
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ASFLAGS = $(MCU) $(DEBUG_FLAGS) $(OPT) -Wa,--warn
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#######################################
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# LDFLAGS
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#######################################
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# link script
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LDSCRIPT = $(VND_DIR)/Ld/STM32G030F6MX_FLASH.ld
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LIBDIR =
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LDFLAGS = \
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$(MCU) \
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-T $(LDSCRIPT) \
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--specs=nano.specs \
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-specs=nosys.specs -lc -lm \
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-Wl,--gc-sections \
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-Wl,--print-memory-usage \
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-Wl,--no-warn-rwx-segments
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# default action: build all
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all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).bin
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#######################################
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# build the application
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#######################################
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# list of objects
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OBJECTS = $(addprefix $(BUILD_DIR)/,$(notdir $(C_SOURCES:.c=.o)))
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vpath %.c $(sort $(dir $(C_SOURCES)))
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# list of ASM program objects
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OBJECTS += $(addprefix $(BUILD_DIR)/,$(notdir $(ASM_SOURCES:.s=.o)))
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vpath %.s $(sort $(dir $(ASM_SOURCES)))
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$(BUILD_DIR)/%.o: %.c Makefile | $(BUILD_DIR)
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$(CC) -c $(CFLAGS) -Wa,-a,-ad,-alms=$(BUILD_DIR)/$(notdir $(<:.c=.lst)) $< -o $@
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$(BUILD_DIR)/%.o: %.s Makefile | $(BUILD_DIR)
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$(CC) -c $(ASFLAGS) $< -o $@
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#$(LUAOBJECTS) $(OBJECTS)
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$(BUILD_DIR)/$(TARGET).elf: $(OBJECTS) Makefile
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$(CC) $(OBJECTS) $(LDFLAGS) -o $@
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$(BUILD_DIR)/%.bin: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
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$(BIN) $< $@
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$(BUILD_DIR):
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mkdir $@
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#######################################
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# Program
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#######################################
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flash: $(BUILD_DIR)/$(TARGET).bin
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pyocd load --target $(PYOCD_TARGET) $(BUILD_DIR)/$(TARGET).bin
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#######################################
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# clean up
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#######################################
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clean:
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-rm -fR $(BUILD_DIR)
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# *** EOF ***
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14
myapps/practice/00-uart-tx/hal.mk
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14
myapps/practice/00-uart-tx/hal.mk
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C_INCLUDES += \
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-I$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Inc
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# "stm32g0xx_ll_bus.h" "stm32g0xx_ll_system.h" "stm32g0xx_ll_cortex.h" : missing
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C_SOURCES += \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_rcc.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_crs.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_exti.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_utils.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_pwr.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_dma.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_gpio.c \
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$(VND_DIR)/STM32CubeG0/Drivers/STM32G0xx_HAL_Driver/Src/stm32g0xx_ll_usart.c
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112
myapps/practice/00-uart-tx/src/main.c
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112
myapps/practice/00-uart-tx/src/main.c
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#include "stm32g0xx_ll_rcc.h"
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#include "stm32g0xx_ll_bus.h"
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#include "stm32g0xx_ll_crs.h"
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#include "stm32g0xx_ll_system.h"
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#include "stm32g0xx_ll_exti.h"
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#include "stm32g0xx_ll_cortex.h"
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#include "stm32g0xx_ll_utils.h"
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#include "stm32g0xx_ll_pwr.h"
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#include "stm32g0xx_ll_dma.h"
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#include "stm32g0xx_ll_gpio.h"
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#include "stm32g0xx_ll_usart.h"
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void SystemClock_Config(void)
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{
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LL_FLASH_SetLatency(LL_FLASH_LATENCY_2);
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while(LL_FLASH_GetLatency() != LL_FLASH_LATENCY_2);
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/* HSI configuration and activation */
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LL_RCC_HSI_Enable();
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while(LL_RCC_HSI_IsReady() != 1);
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/* Main PLL configuration and activation */
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LL_RCC_PLL_ConfigDomain_SYS(LL_RCC_PLLSOURCE_HSI, LL_RCC_PLLM_DIV_1, 8, LL_RCC_PLLR_DIV_2);
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LL_RCC_PLL_Enable();
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LL_RCC_PLL_EnableDomain_SYS();
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while(LL_RCC_PLL_IsReady() != 1);
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/* Set AHB prescaler*/
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LL_RCC_SetAHBPrescaler(LL_RCC_SYSCLK_DIV_1);
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/* Sysclk activation on the main PLL */
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LL_RCC_SetSysClkSource(LL_RCC_SYS_CLKSOURCE_PLL);
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while(LL_RCC_GetSysClkSource() != LL_RCC_SYS_CLKSOURCE_STATUS_PLL);
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/* Set APB1 prescaler*/
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LL_RCC_SetAPB1Prescaler(LL_RCC_APB1_DIV_1);
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LL_Init1msTick(64000000);
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/* Update CMSIS variable (which can be updated also through SystemCoreClockUpdate function) */
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LL_SetSystemCoreClock(64000000);
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}
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void BSP_USART_Config(uint32_t baudRate)
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{
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_USART2);
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/* USART Init */
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LL_USART_SetBaudRate(USART2, SystemCoreClock, LL_USART_PRESCALER_DIV1, LL_USART_OVERSAMPLING_16, baudRate);
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LL_USART_SetDataWidth(USART2, LL_USART_DATAWIDTH_8B);
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LL_USART_SetStopBitsLength(USART2, LL_USART_STOPBITS_1);
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LL_USART_SetParity(USART2, LL_USART_PARITY_NONE);
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LL_USART_SetHWFlowCtrl(USART2, LL_USART_HWCONTROL_NONE);
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LL_USART_SetTransferDirection(USART2, LL_USART_DIRECTION_TX_RX);
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LL_USART_Enable(USART2);
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LL_USART_ClearFlag_TC(USART2);
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/**USART GPIO Configuration
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PA2 ------> USART2_TX
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PA3 ------> USART2_RX
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*/
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LL_IOP_GRP1_EnableClock(LL_IOP_GRP1_PERIPH_GPIOA);
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LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_2, LL_GPIO_MODE_ALTERNATE);
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LL_GPIO_SetPinSpeed(GPIOA, LL_GPIO_PIN_2, LL_GPIO_SPEED_FREQ_VERY_HIGH);
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LL_GPIO_SetPinPull(GPIOA, LL_GPIO_PIN_2, LL_GPIO_PULL_UP);
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LL_GPIO_SetAFPin_0_7(GPIOA, LL_GPIO_PIN_2, LL_GPIO_AF_1);
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LL_GPIO_SetPinMode(GPIOA, LL_GPIO_PIN_3, LL_GPIO_MODE_ALTERNATE);
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LL_GPIO_SetPinSpeed(GPIOA, LL_GPIO_PIN_3, LL_GPIO_SPEED_FREQ_VERY_HIGH);
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LL_GPIO_SetPinPull(GPIOA, LL_GPIO_PIN_3, LL_GPIO_PULL_UP);
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LL_GPIO_SetAFPin_0_7(GPIOA, LL_GPIO_PIN_3, LL_GPIO_AF_1);
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//#if defined (__GNUC__) && !defined (__clang__)
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// To avoid io buffer
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// setvbuf(stdout, NULL, _IONBF, 0);
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// setvbuf(stdin, NULL, _IONBF, 0);
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//#endif
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}
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void BSP_UART_TxChar(char ch)
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{
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LL_USART_TransmitData8(USART2, ch);
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while (!LL_USART_IsActiveFlag_TC(USART2));
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LL_USART_ClearFlag_TC(USART2);
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}
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void BSP_UART_TxString(char *str)
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{
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while (*str) BSP_UART_TxChar(*str++);
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}
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int main(void)
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{
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/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
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LL_APB2_GRP1_EnableClock(LL_APB2_GRP1_PERIPH_SYSCFG);
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LL_APB1_GRP1_EnableClock(LL_APB1_GRP1_PERIPH_PWR);
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/** Disable the internal Pull-Up in Dead Battery pins of UCPD peripheral */
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//LL_SYSCFG_DisableDBATT(LL_SYSCFG_UCPD1_STROBE | LL_SYSCFG_UCPD2_STROBE);
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SystemClock_Config();
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BSP_USART_Config(115200);
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while(1)
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{
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BSP_UART_TxString("Hello World\r\n");
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LL_mDelay(500);
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}
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}
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