From 4de24b43bfc373f46f0510703cde7562fb8cb703 Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Tue, 18 Nov 2025 16:11:32 +0800
Subject: [PATCH] update iniparser to remove warnning
---
project/4.mqttd/modules/tsl2561.c | 212 +++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 212 insertions(+), 0 deletions(-)
diff --git a/project/4.mqttd/modules/tsl2561.c b/project/4.mqttd/modules/tsl2561.c
new file mode 100644
index 0000000..7bb19d7
--- /dev/null
+++ b/project/4.mqttd/modules/tsl2561.c
@@ -0,0 +1,212 @@
+/*********************************************************************************
+ * Copyright: (C) 2023 LingYun IoT System Studio
+ * All rights reserved.
+ *
+ * Filename: tsl2561.c
+ * Description: This file is the Lux sensor TSL2561 code
+ *
+ * Version: 1.0.0(10/08/23)
+ * Author: Guo Wenxue <guowenxue@gmail.com>
+ * ChangeLog: 1, Release initial version on "10/08/23 17:52:00"
+ *
+ * Pin connection:
+ * TSL2561 Module Raspberry Pi Board
+ * VCC <-----> #Pin1(3.3V)
+ * SDA0 <-----> #Pin27(SDA, BCM GPIO0)
+ * SCL0 <-----> #Pin28(SCL, BCM GPIO1)
+ * GND <-----> GND
+ *
+ * /boot/config.txt:
+ * dtoverlay=i2c0,pins_0_1
+ *
+ ********************************************************************************/
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <math.h>
+#include <time.h>
+#include <errno.h>
+#include <libgen.h>
+#include <getopt.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <linux/i2c.h>
+#include <linux/i2c-dev.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include "utils.h"
+#include "logger.h"
+#include "tsl2561.h"
+
+
+#define CONTROL_REG 0x80
+#define REG_COUNT 4
+
+#define POWER_UP 0x03
+#define POWER_DOWN 0x00
+
+#define OFF 0
+#define ON 1
+
+/* Register Address */
+enum
+{
+ /* Channel_0 = DATA0HIGH<<8 + DATA0LOW */
+ DATA0LOW = 0x8C,
+ DATA0HIGH,
+
+ /* Channel_1 = DATA1HIGH<<8 + DATA1LOW */
+ DATA1LOW,
+ DATA1HIGH,
+};
+
+static const int regs_addr[REG_COUNT]={DATA0LOW, DATA0HIGH, DATA1LOW, DATA1HIGH};
+
+void tsl2561_power(int fd, int cmd)
+{
+ struct i2c_msg msg;
+ struct i2c_rdwr_ioctl_data data;
+ unsigned char buf[2];
+
+ msg.addr= TSL2561_I2CADDR;
+ msg.flags=0; /* write */
+ msg.len= 1;
+ msg.buf= buf;
+
+ data.nmsgs= 1;
+ data.msgs= &msg;
+
+ msg.buf[0]=CONTROL_REG;
+ if( ioctl(fd, I2C_RDWR, &data) < 0 )
+ {
+ log_error("%s() ioctl failure: %s\n", __func__, strerror(errno));
+ return ;
+ }
+
+
+ if( cmd )
+ msg.buf[0]=POWER_UP;
+ else
+ msg.buf[0]=POWER_DOWN;
+
+ if( ioctl(fd, I2C_RDWR, &data) < 0 )
+ {
+ log_error("%s() ioctl failure: %s\n", __func__, strerror(errno));
+ return ;
+ }
+
+ return ;
+}
+
+int tsl2561_readreg(int fd, unsigned char regaddr, unsigned char *regval)
+{
+ struct i2c_msg msg;
+ struct i2c_rdwr_ioctl_data data;
+ unsigned char buf[2];
+
+ msg.addr= TSL2561_I2CADDR;
+ msg.flags=0; /* write */
+ msg.len= 1;
+ msg.buf= buf;
+ msg.buf[0] = regaddr;
+
+ data.nmsgs= 1;
+ data.msgs= &msg;
+
+ if( ioctl(fd, I2C_RDWR, &data) < 0 )
+ {
+ log_error("%s() ioctl failure: %s\n", __func__, strerror(errno));
+ return -1;
+ }
+
+ memset(buf, 0, sizeof(buf));
+
+ msg.addr= TSL2561_I2CADDR;
+ msg.flags=I2C_M_RD; /* read */
+ msg.len= 1;
+ msg.buf= buf;
+
+ data.nmsgs= 1;
+ data.msgs= &msg;
+
+ if( ioctl(fd, I2C_RDWR, &data) < 0 )
+ {
+ log_error("%s() ioctl failure: %s\n", __func__, strerror(errno));
+ return -1;
+ }
+
+ *regval = msg.buf[0];
+ return 0;
+}
+
+int tsl2561_get_lux(float *lux)
+{
+ int i, fd;
+ int rv = 0;
+ char *dev = TSL2561_I2CDEV;
+ float div = 0.0;
+
+ unsigned char reg_data[REG_COUNT];
+ int chn0_data = 0;
+ int chn1_data = 0;
+
+ if( !lux )
+ {
+ log_error("Invalid input arguments\n");
+ return -1;
+ }
+
+ if( (fd=open(dev, O_RDWR)) < 0)
+ {
+ log_error("i2c device '%s' open failed: %s\n", dev, strerror(errno));
+ return -2;
+ }
+
+ tsl2561_power(fd, ON);
+
+ msleep(410); /* t(CONV) MAX 400ms */
+
+ /* Read register Channel0 and channel1 data from register */
+ for(i=0; i<REG_COUNT; i++)
+ {
+ rv = tsl2561_readreg(fd, regs_addr[i], ®_data[i]);
+ if( rv < 0)
+ goto failed;
+ }
+
+ 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 )
+ {
+ rv = -2;
+ goto cleanup;
+ }
+
+ div = (float)chn1_data / (float)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;
+
+cleanup:
+ tsl2561_power(fd, OFF);
+
+failed:
+ close(fd);
+ return rv;
+}
--
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