| | |
| | | * Filename: infrared.c |
| | | * Description: This file |
| | | * |
| | | * pi@raspberrypi:~ $ gpio readall #show BCM and wPi pinmap |
| | | * |
| | | * PIN #PIN BCM wPi |
| | | * VCC(left) ---- 2 ---- 5v ---- 5v |
| | | * I/O(indoor) ---- 16 ---- 23 ---- 4 |
| | | * I/O(hallway) ---- 18 ---- 24 ---- 5 |
| | | * GND(right) ---- 34 ---- 0v ---- 0v |
| | | * |
| | | * Version: 1.0.0(30/01/19) |
| | | * Author: Guo Wenxue <guowenxue@gmail.com> |
| | | * ChangeLog: 1, Release initial version on "30/01/19 03:37:16" |
| | |
| | | |
| | | #include <stdio.h> |
| | | #include <unistd.h> |
| | | #include <wiringPi.h> |
| | | #include <errno.h> |
| | | #include <stdlib.h> |
| | | #include <string.h> |
| | | |
| | | /* I/O Pin connected to PIN#16, BCM code pin number is 23 and wPi pin number is 4 */ |
| | | #define INFRARED_PIN 4 |
| | | //#define CONFIG_USE_WIRINGPI |
| | | |
| | | #ifdef CONFIG_USE_WIRINGPI |
| | | |
| | | #include <wiringPi.h> |
| | | |
| | | int main (int argc, char **argv) |
| | | { |
| | | int wPiPin; |
| | | |
| | | if( argc != 2 ) |
| | | { |
| | | printf("%s [wPi PinNum]\n", argv[0]); |
| | | printf("Exampe indoor : %s 4\n", argv[0]); |
| | | printf("Exampe hallway: %s 5\n", argv[0]); |
| | | return 0; |
| | | } |
| | | |
| | | wPiPin = atoi(argv[1]); |
| | | printf("Start infrared detect on wPi Pin[#%d]\n", wPiPin); |
| | | |
| | | wiringPiSetup(); |
| | | pinMode(INFRARED_PIN, INPUT); |
| | | pinMode(wPiPin, INPUT); |
| | | |
| | | while(1) |
| | | { |
| | | printf("Infrared monitor: %s\n", digitalRead(INFRARED_PIN)? "Someone is closing!":"No one nearby!"); |
| | | printf("Infrared monitor: %s\n", digitalRead(wPiPin)? "Someone is closing!":"No one nearby!"); |
| | | sleep(1); |
| | | } |
| | | |
| | | |
| | | return 0; |
| | | } |
| | | |
| | | #else |
| | | |
| | | #include <gpiod.h> |
| | | |
| | | int main (int argc, char **argv) |
| | | { |
| | | struct gpiod_chip* chip; |
| | | struct gpiod_line* line; |
| | | int rv = 0; |
| | | struct gpiod_line_event event; |
| | | int bcmPin; |
| | | |
| | | if( argc != 2 ) |
| | | { |
| | | printf("%s [BCM PinNum]\n", argv[0]); |
| | | printf("Exampe indoor : %s 23\n", argv[0]); |
| | | printf("Exampe hallway: %s 24\n", argv[0]); |
| | | return 0; |
| | | } |
| | | |
| | | bcmPin = atoi(argv[1]); |
| | | printf("Start infrared detect on BCM Pin[#%d]\n", bcmPin); |
| | | |
| | | chip = gpiod_chip_open_by_name("gpiochip0"); |
| | | if( !chip ) |
| | | { |
| | | printf("gpiod open chip failure, maybe you need running as root\n"); |
| | | return 1; |
| | | } |
| | | |
| | | line = gpiod_chip_get_line(chip, bcmPin); |
| | | if( !line ) |
| | | { |
| | | printf("gpiod get line[%d] failure\n", bcmPin); |
| | | rv = 2; |
| | | goto cleanup; |
| | | } |
| | | |
| | | if( gpiod_line_request_input(line, "infrared") < 0 ) |
| | | { |
| | | printf("gpiod request input [#%d] failure: %s\n", bcmPin, strerror(errno) ); |
| | | rv = 3; |
| | | goto cleanup; |
| | | } |
| | | |
| | | while(1) |
| | | { |
| | | /* This function will block, must call it to setup */ |
| | | printf("Infrared monitor: %s\n", gpiod_line_get_value(line) ? "Someone is closing!":"No one nearby!"); |
| | | sleep(1); |
| | | } |
| | | |
| | | cleanup: |
| | | gpiod_chip_close(chip); |
| | | return rv; |
| | | } |
| | | |
| | | |
| | | #endif |