hal/api/makefile | ●●●●● patch | view | raw | blame | history | |
hal/modules/infrared.c | ●●●●● patch | view | raw | blame | history | |
hal/modules/infrared.h | patch | view | raw | blame | history | |
hal/modules/key.c | ●●●●● patch | view | raw | blame | history | |
hal/modules/keypad.c | ●●●●● patch | view | raw | blame | history | |
hal/modules/led.c | patch | view | raw | blame | history | |
hal/modules/led.h | patch | view | raw | blame | history | |
hal/modules/libgpiod/build.sh | patch | view | raw | blame | history | |
hal/modules/libgpiod/makefile | patch | view | raw | blame | history | |
hal/modules/makefile | ●●●●● patch | view | raw | blame | history | |
hal/modules/pwm.c | patch | view | raw | blame | history | |
hal/modules/relay.c | patch | view | raw | blame | history | |
hal/modules/relay.h | patch | view | raw | blame | history |
hal/api/makefile
File was deleted hal/modules/infrared.c
File was renamed from hal/api/infrared.c @@ -69,7 +69,6 @@ which = atoi(optarg); break; case 'h': /* Get help information */ program_usage(progname); return 0; hal/modules/infrared.h
hal/modules/key.c
New file @@ -0,0 +1,171 @@ /********************************************************************************* * Copyright: (C) 2024 LingYun IoT System Studio * All rights reserved. * * Filename: key.c * Description: This file is linux GPIO button driver test code. * ********************************************************************************/ #include <stdio.h> #include <unistd.h> #include <errno.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <libgen.h> #include <getopt.h> #include <sys/types.h> #include <sys/ioctl.h> #include <linux/input.h> #include <linux/kd.h> #include <linux/keyboard.h> #if 0 /* Just for comment here, Reference to linux-3.3/include/linux/input.h */ struct input_event { struct timeval time; __u16 type; /* 0x00:EV_SYN 0x01:EV_KEY 0x04:EV_MSC 0x11:EV_LED*/ __u16 code; /* key value, which key */ __s32 value; /* 1: Pressed 0:Not pressed 2:Always Pressed */ }; #endif #define EV_RELEASED 0 #define EV_PRESSED 1 #define EV_REPEAT 2 #define BUTTON_CNT 1 #define MODE_POLL 0x01 #define MODE_NORMAL 0x02 void usage(char *name); void display_button_event(struct input_event *ev, int cnt); static void program_usage(const char *progname) { printf("Usage: %s [OPTION]...\n", progname); printf(" This is linux GPIO button driver test program.\n"); printf(" -d[device ] Specify input device number, such as 0\n"); printf(" -h[help ] Display this help information\n"); printf("\n"); printf("%s program Version v1.0.0\n", progname); printf("Copyright (C) 2023 LingYun IoT System Studio.\n"); return; } int main(int argc, char **argv) { char *progname=NULL; char kbd_dev[128]; char kbd_name[128] = "Unknown"; int kbd_fd = -1; struct input_event ev[BUTTON_CNT]; int size = sizeof (struct input_event); int which = -1; int rv, opt; fd_set rds; struct option long_options[] = { {"device", required_argument, NULL, 'd'}, {"help", no_argument, NULL, 'h'}, {NULL, 0, NULL, 0} }; progname = basename(argv[0]); /* Parser the command line parameters */ while ((rv = getopt_long(argc, argv, "d:h", long_options, NULL)) != -1) { switch (rv) { case 'd': /* Set infrared number, such as 0...max */ which = atoi(optarg); break; case 'h': /* Get help information */ program_usage(progname); return 0; default: break; } } if( !which ) { program_usage(progname); return 1; } if ((getuid ()) != 0) printf ("You are not root! This may not work...\n"); snprintf(kbd_dev, sizeof(kbd_dev), "/dev/input/event%d", which); if ((kbd_fd = open(kbd_dev, O_RDONLY)) < 0) { printf("Open %s failure: %s", kbd_dev, strerror(errno)); return -1; } ioctl (kbd_fd, EVIOCGNAME (sizeof (kbd_name)), kbd_name); printf ("Monitor input device %s (%s) event on poll mode:\n", kbd_dev, kbd_name); while (1) { FD_ZERO(&rds); FD_SET(kbd_fd, &rds); rv = select(kbd_fd + 1, &rds, NULL, NULL, NULL); if (rv < 0) { printf("select() system call failure: %s\n", strerror(errno)); goto cleanup; } else if (FD_ISSET(kbd_fd, &rds)) { if ((rv=read(kbd_fd, ev, size*BUTTON_CNT )) < size) { printf("Reading data from kbd_fd failure: %s\n", strerror(errno)); break; } else { display_button_event(ev, rv/size); } } } cleanup: close(kbd_fd); return 0; } void display_button_event(struct input_event *ev, int cnt) { int i; struct timeval pressed_time, duration_time; for(i=0; i<cnt; i++) { //printf("type:%d code:%d value:%d\n", ev[i].type, ev[i].code, ev[i].value); if(EV_KEY==ev[i].type && EV_PRESSED==ev[i].value) { pressed_time = ev[i].time; printf("Keypad[%d] pressed time: %ld.%ld\n", ev[i].code, pressed_time.tv_sec, pressed_time.tv_usec); } if(EV_KEY==ev[i].type && EV_RELEASED==ev[i].value) { timersub(&ev[i].time, &pressed_time, &duration_time); printf("keypad[%d] duration time: %ld.%ld\n", ev[i].code, duration_time.tv_sec, duration_time.tv_usec); } } } hal/modules/keypad.c
New file @@ -0,0 +1,197 @@ /********************************************************************************* * Copyright: (C) 2021 Guo Wenxue<Email:guowenxue@gmail.com QQ:281143292> * All rights reserved. * * Filename: keypad.c * Description: This file used to test GPIO button driver builtin Linux kernel * * Version: 1.0.0(11/17/2021~) * Author: Guo Wenxue <guowenxue@gmail.com> * ChangeLog: 1, Release initial version on "11/17/2021 02:46:18 PM" * ********************************************************************************/ #include <stdio.h> #include <unistd.h> #include <errno.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include <fcntl.h> #include <libgen.h> #include <getopt.h> #include <sys/types.h> #include <sys/ioctl.h> #include <linux/input.h> #include <linux/kd.h> #include <linux/keyboard.h> #if 0 /* Just for comment here, Reference to linux-3.3/include/linux/input.h */ struct input_event { struct timeval time; __u16 type; /* 0x00:EV_SYN 0x01:EV_KEY 0x04:EV_MSC 0x11:EV_LED*/ __u16 code; /* key value, which key */ __s32 value; /* 1: Pressed 0:Not pressed 2:Always Pressed */ }; #endif #define EV_RELEASED 0 #define EV_PRESSED 1 #define BUTTON_CNT 10 /* 在C语言编程中,函数应该先定义再使用,如果函数的定义在函数调用后面,应该前向声明。*/ void usage(char *name); void display_button_event(struct input_event *ev, int cnt); int main(int argc, char **argv) { char *kbd_dev = "/dev/input/event1"; //默认监听按键设备; char kbd_name[256] = "Unknown"; //用于保存获取到的设备名称 int kbd_fd = -1; //open()打开文件的文件描述符 int rv=0; // 函数返回值,默认返回0; int opt; // getopt_long 解析命令行参数返回值; int size = sizeof (struct input_event); fd_set rds; //用于监听的事件的集合 struct input_event ev[BUTTON_CNT]; /* getopt_long参数函数第四个参数的定义,二维数组,每个成员由四个元素组成 */ struct option long_options[] = { /* { 参数名称,是否带参数,flags指针(NULL时将val的数值从getopt_long的返回值返回出去), 函数找到该选项时的返回值(字符)} */ {"device", required_argument, NULL, 'd'}, {"help", no_argument, NULL, 'h'}, {NULL, 0, NULL, 0} }; //获取命令行参数的解析返回值 while ((opt = getopt_long(argc, argv, "d:h", long_options, NULL)) != -1) { switch (opt) { case 'd': kbd_dev = optarg; break; case 'h': usage(argv[0]); return 0; default: break; } } if(NULL == kbd_dev) { /* 命令行argv[0]是输入的命令,如 ./keypad */ usage(argv[0]); return -1; } /* 获取uid 建议以root权限运行确保可以正常运行 */ if ((getuid ()) != 0) printf ("You are not root! This may not work...\n"); /* 打开按键对应的设备节点,如果错误则返回负数 */ if ((kbd_fd = open(kbd_dev, O_RDONLY)) < 0) { printf("Open %s failure: %s", kbd_dev, strerror(errno)); return -1; } /* 使用ioctl获取 /dev/input/event*对应的设备名字 */ ioctl (kbd_fd, EVIOCGNAME (sizeof (kbd_name)), kbd_name); printf ("Monitor input device %s (%s) event on poll mode:\n", kbd_dev, kbd_name); /* 循环使用 select() 多路复用监听按键事件 */ while (1) { FD_ZERO(&rds); /* 清空 select() 的读事件集合 */ FD_SET(kbd_fd, &rds); /* 将按键设备的文件描述符加入到读事件集合中*/ /* 使用select开启监听并等待多个描述符发生变化,第一个参数最大描述符+1, 2、3、4参数分别是要监听读、写、异常三个事件的文军描述符集合; 最后一个参数是超时时间(NULL-->永不超时,会一直阻塞住) 如果按键没有按下,则程序一直阻塞在这里。一旦按键按下,则按键设备有数据 可读,此时函数将返回。 */ rv = select(kbd_fd + 1, &rds, NULL, NULL, NULL); if (rv < 0) { printf("Select() system call failure: %s\n", strerror(errno)); goto CleanUp; } else if (FD_ISSET(kbd_fd, &rds)) /* 是按键设备发生了事件 */ { //read读取input设备的数据包,数据包为input_event结构体类型。 if ((rv = read (kbd_fd, ev, size*BUTTON_CNT )) < size) { printf("Reading data from kbd_fd failure: %s\n", strerror(errno)); break; } else { display_button_event(ev, rv/size); } } } CleanUp: close(kbd_fd); return 0; } /* 该函数用来打印程序的使用方法 */ void usage(char *name) { char *progname = NULL; char *ptr = NULL; /* 字符串拷贝函数,该函数内部将调用malloc()来动态分配内存,然后将$name 字符串内容拷贝到malloc分配的内存中,这样使用完之后需要free释放内存. */ ptr = strdup(name); progname = basename(ptr); //去除该可执行文件的路径名,获取其自身名称(即keypad) printf("Usage: %s [-p] -d <device>\n", progname); printf(" -d[device ] button device name\n"); printf(" -p[poll ] Use poll mode, or default use infinit loop.\n"); printf(" -h[help ] Display this help information\n"); free(ptr); //和strdup对应,释放该内存 return; } /* 该函数用来解析按键设备上报的数据,并答应按键按下的相关信息 */ void display_button_event(struct input_event *ev, int cnt) { int i; static struct timeval pressed_time; //该变量用来存放按键按下的时间,注意static的使用。 struct timeval duration_time; //该变量用来存放按键按下持续时间 for(i=0; i<cnt; i++) { /* 当上报的时间type为EV_KEY时候并且,value值为1或0 (1为按下,0为释放) */ if(EV_KEY==ev[i].type && EV_PRESSED==ev[i].value) { pressed_time = ev[i].time; printf("Keypad[%d] pressed time: %ld.%ld\n", ev[i].code, pressed_time.tv_sec, pressed_time.tv_usec); } if(EV_KEY==ev[i].type && EV_RELEASED==ev[i].value) { /* 计算时间差函数 将第一个参数减去第二个参数的值的结果 放到第三个参数之中 */ timersub(&ev[i].time, &pressed_time, &duration_time); printf("keypad[%d] released time: %ld.%ld\n", ev[i].code, ev[i].time.tv_sec, ev[i].time.tv_usec); printf("keypad[%d] duration time: %ld.%ld\n", ev[i].code, duration_time.tv_sec, duration_time.tv_usec); } } } hal/modules/led.c
hal/modules/led.h
hal/modules/libgpiod/build.sh
hal/modules/libgpiod/makefile
hal/modules/makefile
@@ -26,7 +26,15 @@ SRCFILES = $(wildcard *.c) BINARIES=$(SRCFILES:%.c=%) all: binaries install # libgpiod compile install path LIBS_PATH=install CFLAGS+=-I ${LIBS_PATH}/include LDFLAGS+=-L ${LIBS_PATH}/lib -lgpiod all: libs binaries install libs: make -C libgpiod CROSS_COMPILE=${CROSS_COMPILE} binaries: ${BINARIES} @@ -40,6 +48,8 @@ @rm -f *.o *.lo $(BINARIES) distclean: clean @rm -f tags cscope* @rm -f tags cscope* @make clean -C libgpiod @rm -rf install .PHONY: clean entry hal/modules/pwm.c
hal/modules/relay.c
hal/modules/relay.h