pcf8574-blinky v2
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167
myapps/misc/pcf8574-blinky-refac/Makefile
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167
myapps/misc/pcf8574-blinky-refac/Makefile
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######################################
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# target
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######################################
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TARGET = ch592_blinky
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# ../../
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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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######################################
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# source
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######################################
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# C sources
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C_SOURCES = \
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src/main.c \
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src/pcf8574.c \
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../../../vendor/StdPeriphDriver/CH59x_clk.c \
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../../../vendor/StdPeriphDriver/CH59x_gpio.c \
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../../../vendor/StdPeriphDriver/CH59x_pwr.c \
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../../../vendor/StdPeriphDriver/CH59x_sys.c \
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../../../vendor/StdPeriphDriver/CH59x_i2c.c \
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../../../vendor/RVMSIS/core_riscv.c \
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# ASM sources
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ASM_SOURCES = \
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../../../vendor/Startup/startup_CH592.S
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#######################################
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# binaries
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#######################################
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#PREFIX = riscv-none-elf-
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#PREFIX = riscv64-elf-
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#debian
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#PREFIX = riscv64-unknown-elf-
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PREFIX = riscv-wch-elf-
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CC = $(PREFIX)gcc
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AS = $(PREFIX)gcc -x assembler-with-cpp
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CP = $(PREFIX)objcopy
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SZ = $(PREFIX)size
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HEX = $(CP) -O ihex
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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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# cpu
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CPU = -march=rv32imac_zicsr -mabi=ilp32 -msmall-data-limit=8
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# For gcc version less than v12
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# CPU = -march=rv32imac -mabi=ilp32 -msmall-data-limit=8
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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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# AS includes
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AS_INCLUDES =
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# C includes
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C_INCLUDES = \
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-I../../../vendor/StdPeriphDriver/inc \
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-I../../../vendor/RVMSIS \
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-I../../../vendor/Core \
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-Isrc/inc
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# compile gcc flags
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ASFLAGS = $(MCU) $(AS_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
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CFLAGS = $(MCU) $(C_INCLUDES) $(OPT) -Wall -fdata-sections -ffunction-sections
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ifeq ($(DEBUG), 1)
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CFLAGS += -g -gdwarf-2
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endif
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# Generate dependency information
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CFLAGS += -MMD -MP -MF"$(@:%.o=%.d)"
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#######################################
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# LDFLAGS
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#######################################
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# link script
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LDSCRIPT = ../../../vendor/Ld/Link.ld
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# libraries
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LIBS = -lc -lm -lnosys ../../../vendor/StdPeriphDriver/libISP592.a
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LIBDIR =
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LDFLAGS = $(MCU) -mno-save-restore -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -Wunused -Wuninitialized -T $(LDSCRIPT) -nostartfiles -Xlinker --gc-sections -Wl,-Map=$(BUILD_DIR)/$(TARGET).map --specs=nano.specs $(LIBS)
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# default action: build all
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all: $(BUILD_DIR)/$(TARGET).elf $(BUILD_DIR)/$(TARGET).hex $(BUILD_DIR)/$(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 | $(BUILD_DIR)
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$(AS) -c $(CFLAGS) $< -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 $@
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$(SZ) $@
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$(BUILD_DIR)/%.hex: $(BUILD_DIR)/%.elf | $(BUILD_DIR)
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$(HEX) $< $@
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$(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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isp: $(BUILD_DIR)/$(TARGET).bin
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wchisp flash $(BUILD_DIR)/$(TARGET).bin
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flash: $(BUILD_DIR)/$(TARGET).bin
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wlink flash $(BUILD_DIR)/$(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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#######################################
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# dependencies
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#######################################
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-include $(wildcard $(BUILD_DIR)/*.d)
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# *** EOF ***
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17
myapps/misc/pcf8574-blinky-refac/src/inc/pcf8574.h
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myapps/misc/pcf8574-blinky-refac/src/inc/pcf8574.h
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// PCF8574 driver header
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#define PCFP0 0x01
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#define PCFP1 0x02
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#define PCFP2 0x04
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#define PCFP3 0x08
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#define PCFP4 0x10
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#define PCFP5 0x20
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#define PCFP6 0x40
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#define PCFP7 0x80 //128
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void pcf_init();
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void pcf_setbits(uint8_t ports);
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void pcf_resetbits(uint8_t ports);
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24
myapps/misc/pcf8574-blinky-refac/src/main.c
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24
myapps/misc/pcf8574-blinky-refac/src/main.c
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// LED on PORT0
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#include "CH59x_common.h"
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#include "pcf8574.h"
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int main()
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{
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SetSysClock(CLK_SOURCE_PLL_60MHz);
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pcf_init();
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pcf_setbits(PCFP0);
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while (1) {
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mDelaymS(400);
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pcf_resetbits(PCFP0);
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mDelaymS(100);
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pcf_setbits(PCFP0);
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}
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}
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62
myapps/misc/pcf8574-blinky-refac/src/pcf8574.c
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62
myapps/misc/pcf8574-blinky-refac/src/pcf8574.c
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// PCF8574 driver
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#include "CH59x_common.h"
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#include "pcf8574.h"
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#define I2C_OWNADD 0x0001
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void pcf_init()
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{
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I2C_Init(I2C_Mode_I2C, 100000, I2C_DutyCycle_16_9,
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I2C_Ack_Enable, I2C_AckAddr_7bit, I2C_OWNADD);
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I2C_GenerateSTART(ENABLE);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_MODE_SELECT));
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I2C_Send7bitAddress(0x40, I2C_Direction_Transmitter);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
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I2C_SendData(0xFF);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_BYTE_TRANSMITTED));
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I2C_GenerateSTOP(ENABLE);
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}
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/*
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* set the ports OR'd together like: PCFP0 | PCFP1
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*/
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void pcf_setbits(uint8_t ports)
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{
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I2C_GenerateSTART(ENABLE);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_MODE_SELECT));
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I2C_Send7bitAddress(0x41, I2C_Direction_Receiver);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
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uint8_t curr = I2C_ReceiveData();
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_BYTE_RECEIVED));
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I2C_GenerateSTOP(ENABLE);
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I2C_GenerateSTART(ENABLE);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_MODE_SELECT));
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I2C_Send7bitAddress(0x40, I2C_Direction_Transmitter);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
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I2C_SendData(curr | ports);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_BYTE_TRANSMITTED));
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I2C_GenerateSTOP(ENABLE);
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}
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void pcf_resetbits(uint8_t ports)
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{
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I2C_GenerateSTART(ENABLE);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_MODE_SELECT));
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I2C_Send7bitAddress(0x41, I2C_Direction_Receiver);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_RECEIVER_MODE_SELECTED));
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uint8_t curr = I2C_ReceiveData();
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_BYTE_RECEIVED));
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I2C_GenerateSTOP(ENABLE);
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I2C_GenerateSTART(ENABLE);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_MODE_SELECT));
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I2C_Send7bitAddress(0x40, I2C_Direction_Transmitter);
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_TRANSMITTER_MODE_SELECTED));
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I2C_SendData(curr & ~(ports));
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while (!I2C_CheckEvent(I2C_EVENT_MASTER_BYTE_TRANSMITTED));
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I2C_GenerateSTOP(ENABLE);
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}
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