modules/c/infrared.c | ●●●●● patch | view | raw | blame | history | |
modules/c/makefile | ●●●●● patch | view | raw | blame | history | |
modules/c/relay.h | ●●●●● patch | view | raw | blame | history | |
modules/c/sht20.c | ●●●●● patch | view | raw | blame | history | |
modules/c/tsl2561.c | ●●●●● patch | view | raw | blame | history | |
modules/c/tsl2561.h | ●●●●● patch | view | raw | blame | history |
modules/c/infrared.c
@@ -15,8 +15,8 @@ #include <unistd.h> #include <wiringPi.h> /* I/O Pin connected to PIN#16, BCM code pin number is 23 and wPi pin number is 4 */ #define INFRARED_PIN 4 /*Monitor RPi I/O Pin connected to PIN#38, and wPi pin number is 28 */ #define INFRARED_PIN 28 int main (int argc, char **argv) { modules/c/makefile
@@ -20,6 +20,7 @@ LDFLAGS+=-lwiringPi LDFLAGS+=-lpthread LDFLAGS+=-lm VPATH= . SRCS = $(wildcard ${VPATH}/*.c) modules/c/relay.h
@@ -19,8 +19,8 @@ #define OFF 0 #endif /* I/O Pin connected to PIN#18, BCM code pin number is 24 and wPi pin number is 5 */ #define RELAY_PIN 5 /* Moniter RPi I/O Pin connected to PIN#40, and wPi pin number is 29 */ #define RELAY_PIN 29 void relay_init(void); void turn_relay(int cmd); modules/c/sht20.c
@@ -17,8 +17,7 @@ #include <sys/ioctl.h> #include <linux/types.h> #include <sys/stat.h> #include <linux/i2c.h> #include <linux/i2c-dev.h> #include <linux/i2c-dev.h> #include <stdio.h> #include <stdlib.h> #include <sys/types.h> modules/c/tsl2561.c
New file @@ -0,0 +1,130 @@ /********************************************************************************* * Copyright: (C) 2019 LingYun IoT System Studio * All rights reserved. * * Filename: tsl2561.c * Description: This file is the Lux sensor TSL2561 API functions on RaspberryPi, * which connected to I2C-1 * * Version: 1.0.0(04/07/19) * Author: Guo Wenxue <guowenxue@gmail.com> * ChangeLog: 1, Release initial version on "04/07/19 17:39:38" * ********************************************************************************/ #include <wiringPi.h> #include <wiringPiI2C.h> #include <string.h> #include <stdio.h> #include <stdlib.h> #include <unistd.h> #include <math.h> #include <errno.h> #include "tsl2561.h" int tsl_fd = -1; static const int regs_addr[REG_COUNT]={DATA0LOW, DATA0HIGH, DATA1LOW, DATA1HIGH}; int tsl2561_init(void) { if(tsl_fd > 0) return 0; tsl_fd = wiringPiI2CSetup(TSL2561_I2C_ADDR); if(tsl_fd < 0) { printf("TSL2561 I2C setup failure: %s\n", strerror(errno)); } else { printf("TSL2561 initialise ok, tsl_fd=%d\n", tsl_fd); } return tsl_fd; } int tsl2561_get_lux(void) { int i; int reg_data[REG_COUNT]; int chn0_data = 0; int chn1_data = 0; double div = 0.0; double lux = 0.0; /* Power up TSL2561 */ wiringPiI2CWrite(tsl_fd, CONTROL_REG); wiringPiI2CWrite(tsl_fd, POWER_UP); sleep(1); /* Read register Channel0 and channel1 data from register */ for(i=0; i<REG_COUNT; i++) { wiringPiI2CWrite(tsl_fd, regs_addr[i]); reg_data[i] = wiringPiI2CRead(tsl_fd); //printf("write and read register: 0x%0x->%d\n", regs_addr[i], reg_data[i]); } chn0_data = reg_data[1]*256 + reg_data[0]; /* Channel0 = DATA0HIGH<<8 + DATA0LOW */ chn1_data = reg_data[3]*256 + reg_data[2]; /* channel1 = DATA1HIGH<<8 + DATA1LOW */ if( chn0_data<=0 || chn1_data<0 ) { //printf("TSL2561 get date chn0_data[%d] chn1_data[%d]\n", chn0_data, chn1_data); lux = 0.0; goto OUT; } div = (double)chn1_data / (double)chn0_data; if( div>0 && div<=0.5 ) lux = 0.304*chn0_data-0.062*chn0_data*pow(div,1.4); else if( div>0.5 && div<=0.61 ) lux = 0.0224*chn0_data-0.031*chn1_data; else if( div>0.61 && div<=0.8 ) lux = 0.0128*chn0_data-0.0153*chn1_data; else if( div>0.8 && div<=1.3 ) lux = 0.00146*chn0_data-0.00112*chn1_data; else if( div>1.3 ) lux = 0.0; OUT: printf("TSLl2561 get lux: %.3f\n", lux); wiringPiI2CWrite(tsl_fd, CONTROL_REG); wiringPiI2CWrite(tsl_fd, POWER_DOWN); } int main(int argc, char **argv) { int interval = 1; if( argc >= 2 ) { interval = atoi(argv[1]); } tsl2561_init(); while(1) { tsl2561_get_lux(); sleep(interval); } } modules/c/tsl2561.h
New file @@ -0,0 +1,38 @@ /******************************************************************************** * Copyright: (C) 2019 LingYun IoT System Studio * All rights reserved. * * Filename: tsl2561.h * Description: This head file is the Lux sensor TSL2561 API functions on RaspberryPi * * Version: 1.0.0(04/07/19) * Author: Guo Wenxue <guowenxue@gmail.com> * ChangeLog: 1, Release initial version on "04/07/19 17:42:35" * ********************************************************************************/ #ifndef _TSL2561_H_ #define _TSL2561_H_ #define TSL2561_I2C_ADDR 0x39 #define CONTROL_REG 0x80 #define REG_COUNT 4 #define POWER_UP 0x03 #define POWER_DOWN 0x00 /* Register Address */ enum { /* Channel_0 = DATA0HIGH<<8 + DATA0LOW */ DATA0LOW = 0x8C, DATA0HIGH, /* Channel_1 = DATA1HIGH<<8 + DATA1LOW */ DATA1LOW, DATA1HIGH, }; #endif /* ----- #ifndef _TSL2561_H_ ----- */