Guo Wenxue
2019-07-05 0ce62b1a2fee1ff6b13b1d0557e5573ce829d709
raspberrypi/modules/c source code for infrared, relay #pin set for Monitor RPi, and add tsl2561 lux sensor code
4 files modified
2 files added
178 ■■■■■ changed files
modules/c/infrared.c 4 ●●●● patch | view | raw | blame | history
modules/c/makefile 1 ●●●● patch | view | raw | blame | history
modules/c/relay.h 4 ●●●● patch | view | raw | blame | history
modules/c/sht20.c 1 ●●●● patch | view | raw | blame | history
modules/c/tsl2561.c 130 ●●●●● patch | view | raw | blame | history
modules/c/tsl2561.h 38 ●●●●● 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
@@ -17,7 +17,6 @@
#include <sys/ioctl.h>
#include <linux/types.h>
#include <sys/stat.h>
#include <linux/i2c.h>
#include <linux/i2c-dev.h> 
#include <stdio.h>
#include <stdlib.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_  ----- */