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0067d6ea97
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0067d6ea97 |
2
.gitignore
vendored
2
.gitignore
vendored
@ -1,3 +1,3 @@
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bin/
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lib/
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obj/
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coverage/
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17
.vscode/c_cpp_properties.json
vendored
17
.vscode/c_cpp_properties.json
vendored
@ -1,17 +0,0 @@
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{
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"configurations": [
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{
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"name": "Linux",
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"includePath": [
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"${workspaceFolder}/**",
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"/usr/include/libftdi1"
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],
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"defines": [],
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"compilerPath": "/usr/bin/clang",
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"cStandard": "c11",
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"cppStandard": "c++17",
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"intelliSenseMode": "clang-x64"
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}
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],
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"version": 4
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}
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58
Makefile
58
Makefile
@ -1,6 +1,7 @@
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CROSS_COMPILE ?=
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TARGET_FILE ?= ftdi_gpio
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STATIC_LIB_FILE ?= libftdi_gpio.a
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DYNAMIC_LIB_FILE ?= libftdi_gpio.so
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CC = $(CROSS_COMPILE)gcc
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CPP = $(CROSS_COMPILE)cpp
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@ -10,24 +11,27 @@ GENHTML = genhtml
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SRC_DIR = src
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OBJ_DIR = obj
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BIN_DIR = bin
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LIB_DIR = lib
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COVERAGE_DIR = coverage
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UNIT_TEST_SRC_DIR = test/unit
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UNIT_TEST_OBJ_DIR = $(OBJ_DIR)/$(UNIT_TEST_SRC_DIR)
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PREFIX ?= /usr
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LIB_INSTALL_DIR ?= $(PREFIX)/lib/ftdi_gpio
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INC_INSTALL_DIR ?= $(PREFIX)/include/ftdi_gpio
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INCLUDES := inc
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INCLUDES += /usr/include/libftdi1
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ifneq "$(findstring $(MAKECMDGOALS), build_unit_test exec_unit_test coverage)" ""
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INCLUDES += test/inc
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C_FLAGS += --coverage
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L_FLAGS += --coverage
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else
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LIBS := ftdi1
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endif
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L_FLAGS += -shared -Wl,-soname,$(notdir $(DYNAMIC_LIB))
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C_FLAGS += -fpic
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C_FLAGS += -O0 -g -Wall -Wextra -Werror
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CPP_FLAGS += $(addprefix -I, $(INCLUDES))
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CHECK_FLAGS = --enable=all --template=gcc --error-exitcode=1 --suppress=missingIncludeSystem
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@ -40,13 +44,30 @@ UNIT_TEST_OBJS = $(patsubst $(SRC_DIR)%,$(OBJ_DIR)%,$(patsubst $(UNIT_TEST_SRC_D
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OBJS = $(C_OBJS)
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TARGET = $(BIN_DIR)/$(TARGET_FILE)
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STATIC_LIB = $(LIB_DIR)/$(STATIC_LIB_FILE)
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DYNAMIC_LIB = $(LIB_DIR)/$(DYNAMIC_LIB_FILE)
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UNIT_TEST_TARGET = $(BIN_DIR)/$(UNIT_TEST_SRC_DIR)/$(TARGET_FILE)
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THIS_MAKEFILE := $(lastword $(MAKEFILE_LIST))
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.PHONY: all
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all: $(TARGET)
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.PHONY: all install clean
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all: $(STATIC_LIB) $(DYNAMIC_LIB)
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install: all
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install -d $(LIB_INSTALL_DIR)
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install -d $(INC_INSTALL_DIR)
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install -m 0644 $(STATIC_LIB) $(LIB_INSTALL_DIR)
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install -m 0777 $(DYNAMIC_LIB) $(LIB_INSTALL_DIR)
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install -m 0644 inc/* $(INC_INSTALL_DIR)
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clean:
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rm -f $(STATIC_LIB) $(DYNAMIC_LIB)
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rm -f $(OBJS) $(patsubst %.o,%.d,$(OBJS))
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rm -f $(UNIT_TEST_OBJS) $(patsubst %.o,%.d,$(UNIT_TEST_OBJS)) $(UNIT_TEST_TARGET)
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rm -f $(UNIT_TEST_OBJ_DIR)/*.gcda
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rm -f $(UNIT_TEST_OBJ_DIR)/*.gcno
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rm -f $(OBJ_DIR)/*.gcda $(OBJ_DIR)/*.gcno
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rm -fr $(COVERAGE_DIR)
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.PHONY: coverage
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coverage: _cov_genhtml
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@ -80,11 +101,15 @@ check: $(C_SRCS)
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$(UNIT_TEST_TARGET): $(UNIT_TEST_OBJS) $(THIS_MAKEFILE)
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@mkdir -p $(BIN_DIR)/$(UNIT_TEST_SRC_DIR)
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$(CC) $(C_FLAGS) $(LD_FLAGS) $(UNIT_TEST_OBJS) $(addprefix -l,$(LIBS)) -o $@
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$(CC) $(C_FLAGS) $(LD_FLAGS) $(UNIT_TEST_OBJS) -o $@
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$(TARGET): $(OBJS) $(THIS_MAKEFILE)
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@mkdir -p $(BIN_DIR)
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$(CC) $(C_FLAGS) $(LD_FLAGS) $(OBJS) $(addprefix -l,$(LIBS)) -o $@
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$(STATIC_LIB): $(OBJS) $(THIS_MAKEFILE)
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@mkdir -p $(LIB_DIR)
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$(AR) rcs $(STATIC_LIB) $(OBJS)
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$(DYNAMIC_LIB): $(OBJS) $(THIS_MAKEFILE)
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@mkdir -p $(LIB_DIR)
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$(CC) $(L_FLAGS) -o $(DYNAMIC_LIB) $(OBJS)
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.PRECIOUS: $(OBJ_DIR)/%.d
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$(OBJ_DIR)/%.d: $(SRC_DIR)/%.c
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@ -104,13 +129,6 @@ $(UNIT_TEST_OBJ_DIR)/%.o: $(UNIT_TEST_SRC_DIR)/%.c $(UNIT_TEST_OBJ_DIR)/%.d
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@mkdir -p $(UNIT_TEST_OBJ_DIR)
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$(CC) -c $(CPP_FLAGS) $(C_FLAGS) $< -o $@
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.PHONY: clean
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clean:
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rm -f $(OBJS) $(patsubst %.o,%.d,$(OBJS)) $(TARGET)
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rm -f $(UNIT_TEST_OBJS) $(patsubst %.o,%.d,$(UNIT_TEST_OBJS)) $(UNIT_TEST_TARGET)
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rm -f $(OBJ_DIR)/*.gcda $(OBJ_DIR)/*.gcno
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rm -fr $(COVERAGE_DIR)
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ifneq ($(MAKECMDGOALS),clean)
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-include $(patsubst %.o,%.d,$(OBJS))
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endif
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63
src/main.c
63
src/main.c
@ -1,63 +0,0 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <syslog.h>
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#include <stdbool.h>
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#include <ftdi_dev.h>
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#include <gpio.h>
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/*
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#define GPIO1 0x08 // TX (brown)
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#define GPIO2 0x01 // TX (orange)
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#define GPIO3 0x02 // RX (yellow)
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#define GPIO4 0x14 // RTS (green on FTDI) + DTR (on SparkFun breakout)
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*/
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static struct ftdi_dev ftdi_obj = {
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.ftdi = NULL,
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.is_open = false,
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.vendor_id = 0x0403,
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.product_id = 0x6001,
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.bit_mask = 0,
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.status_mask = 0,
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};
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static const struct gpio gpio_1 = {
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.pin = 0x08, /* CTS (brown wire on FTDI cable) */
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.ftdi_dev = &ftdi_obj,
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};
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static const struct gpio gpio_2 = {
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.pin = 0x01, /* TX (orange wire on FTDI cable) */
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.ftdi_dev = &ftdi_obj,
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};
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int main(void)
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{
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int res, cnt;
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unsigned int value;
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openlog("ftdi_gpio", LOG_CONS | LOG_PID | LOG_NDELAY, LOG_LOCAL1);
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res = gpio_open(&gpio_1);
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res |= gpio_open(&gpio_2);
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if(res != EXIT_SUCCESS) {
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syslog(LOG_ERR, "Unable to open gpio\n");
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return res;
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}
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gpio_write(&gpio_1, 1);
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gpio_write(&gpio_2, 0);
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for(cnt = 0; cnt < 10; cnt++) {
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gpio_toggle(&gpio_1);
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gpio_toggle(&gpio_2);
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gpio_read(&gpio_1, &value);
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printf("Gpio1: %u\n", value);
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gpio_read(&gpio_2, &value);
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printf("Gpio2: %u\n", value);
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sleep(1);
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}
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gpio_close(&gpio_1);
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gpio_close(&gpio_2);
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return EXIT_SUCCESS;
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}
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