From 3ef6cf39749c00366b12aef9f023aac3bda16f2d Mon Sep 17 00:00:00 2001
From: guowenxue <guowenxue@gmail.com>
Date: Mon, 17 Nov 2025 23:39:25 +0800
Subject: [PATCH] update modules for tsl2561 and ds18b20
---
project/lightd/lightd.c | 447 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 447 insertions(+), 0 deletions(-)
diff --git a/project/lightd/lightd.c b/project/lightd/lightd.c
new file mode 100644
index 0000000..2b1a00a
--- /dev/null
+++ b/project/lightd/lightd.c
@@ -0,0 +1,447 @@
+/*********************************************************************************
+ * Copyright: (C) 2019 LingYun IoT System Studio
+ * All rights reserved.
+ *
+ * Filename: main.c
+ * Description: This file
+ *
+ * Version: 1.0.0(29/01/19)
+ * Author: Guo Wenxue <guowenxue@gmail.com>
+ * ChangeLog: 1, Release initial version on "29/01/19 15:34:41"
+ *
+ ********************************************************************************/
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include <getopt.h>
+#include <libgen.h>
+#include <string.h>
+#include <errno.h>
+
+#include <mosquitto.h>
+#include <cjson/cJSON.h>
+
+#include "logger.h"
+#include "util_proc.h"
+#include "config.h"
+#include "tsl2561.h"
+#include "ds18b20.h"
+
+#define PROG_VERSION "v1.0.0"
+#define DAEMON_PIDFILE "/tmp/.lightd.pid"
+
+int check_timeout(time_t *last_time, int interval);
+void *thingsboard_worker(void *args);
+
+static void program_usage(char *progname)
+{
+ printf("Usage: %s [OPTION]...\n", progname);
+ printf(" %s is LingYun studio MQTT daemon program running on RaspberryPi\n", progname);
+
+ printf("\nMandatory arguments to long options are mandatory for short options too:\n");
+ printf(" -b[daemon ] Running in daemon mode\n");
+ printf(" -d[debug ] Running in debug mode\n");
+ printf(" -c[conf ] Specify configure file\n");
+ printf(" -h[help ] Display this help information\n");
+ printf(" -v[version ] Display the program version\n");
+
+ printf("\n%s version %s\n", progname, PROG_VERSION);
+ return;
+}
+
+int main (int argc, char **argv)
+{
+ int daemon = 0;
+ char *conf_file="/etc/lightd.conf";
+ int debug = 0;
+ int opt;
+ char *progname=NULL;
+ pthread_t tid;
+
+ int rv;
+ float lux = 0.0;
+ time_t last_time = 0;
+ iotd_ctx_t ctx;
+ hwinfo_t *hwinfo = &ctx.hwinfo;
+
+ struct option long_options[] = {
+ {"conf", required_argument, NULL, 'c'},
+ {"daemon", no_argument, NULL, 'b'},
+ {"debug", no_argument, NULL, 'd'},
+ {"version", no_argument, NULL, 'v'},
+ {"help", no_argument, NULL, 'h'},
+ {NULL, 0, NULL, 0}
+ };
+
+ progname = (char *)basename(argv[0]);
+
+ /* parser the command line parameters */
+ while ((opt = getopt_long(argc, argv, "c:bdvh", long_options, NULL)) != -1)
+ {
+ switch (opt)
+ {
+ case 'c': /* Set configure file */
+ conf_file = optarg;
+ break;
+
+ case 'b': /* Set daemon running */
+ daemon = 1;
+ break;
+
+ case 'd': /* Set debug running */
+ debug = 1;
+ break;
+
+ case 'v': /* Get software version */
+ printf("%s version %s\n", progname, PROG_VERSION);
+ return 0;
+
+ case 'h': /* Get help information */
+ program_usage(progname);
+ return 0;
+
+ default:
+ break;
+ }
+
+ }
+
+ /* parser configure file */
+ if( parser_conf(conf_file, &ctx, debug)<0 )
+ {
+ fprintf(stderr, "Parser thingsboard configure file failure\n");
+ return -2;
+ }
+
+ /* install signal proc handler */
+ install_default_signal();
+
+ /* check program already running or not, if already running then exit, or set running as daemon */
+ if( check_set_program_running(daemon, DAEMON_PIDFILE) < 0 )
+ goto cleanup;
+
+ /* initial mosquitto library */
+ mosquitto_lib_init();
+
+ /* initial gpio hardware */
+ gpio_init(&hwinfo->gpio);
+
+ /*
+ * +--------------------------------+
+ * | ThingsBoard MQTT Thread |
+ * +--------------------------------+
+ */
+ if( thread_start(&tid, thingsboard_worker, &ctx.mqtt ) < 0 )
+ {
+ log_error("Start MQTT subsciber worker thread failure\n");
+ goto cleanup;
+ }
+ log_info("Start MQTT subsciber worker thread ok\n");
+
+ /*
+ * +--------------------------------+
+ * | Auto Light Control Thread |
+ * +--------------------------------+
+ */
+ log_info("Auto light control thread start\n");
+ while( ! g_signal.stop )
+ {
+ /* TSL2561 update lux in every 5 minutes */
+ if(check_timeout(&last_time, 300))
+ {
+ /* The TSL2561 sensor is not present, do not turn on the light */
+ if( !hwinfo->tsl2561 )
+ {
+ log_error("TSL2561 is not present, do not turn on the light\n");
+ lux = hwinfo->lux_threshold + 100.0;
+ goto nextloop;
+ }
+
+ /* The TSL2561 sensor failed, do not turn on the light */
+ if( tsl2561_get_lux(&lux) < 0 )
+ {
+ log_error("TSL2561 sample failed, do not turn on the light\n");
+ lux = hwinfo->lux_threshold + 100.0;
+ goto nextloop;
+ }
+
+ if( lux > hwinfo->lux_threshold )
+ log_info("Lux[%.3f] > Treshold[%.3f], don't auto light\n", lux, hwinfo->lux_threshold);
+ else
+ log_info("Lux[%.3f] <= Treshold[%.3f], need auto light\n", lux, hwinfo->lux_threshold);
+ }
+
+ /* It's bright enough, no lighting is needed */
+ if( lux > hwinfo->lux_threshold )
+ {
+ goto nextloop;
+ }
+
+ /* It's not bright enough, lighting is necessary */
+ rv = infrared_detect();
+ if( rv != 0 )
+ {
+ log_warn("Someone incoming detected by %s infrared\n", rv&FLAG_INFRARED_INDOOR?"indoor":"hallway");
+
+ turn_light("indoor", ON);
+ turn_light("hallway", ON);
+
+ sleep(hwinfo->light_intval);
+
+ turn_light("indoor", OFF);
+ turn_light("hallway", OFF);
+ }
+
+nextloop:
+ sleep(1);
+ }
+
+cleanup:
+ mosquitto_lib_cleanup();
+ log_close();
+
+ return 0;
+}
+
+/*
+ * +--------------------------------+
+ * | ThingsBoard MQTT Thread |
+ * +--------------------------------+
+ */
+
+int check_timeout(time_t *last_time, int interval)
+{
+ int timeout = 0;
+ time_t now;
+
+ time(&now);
+
+ if( difftime(now, *last_time)>interval )
+ {
+ timeout = 1;
+ *last_time = now;
+ }
+
+ return timeout;
+}
+
+/* compatible with MQTT publish callback function */
+void pub_connect_callback(struct mosquitto *mosq, void *userdata, int result)
+{
+ mqtt_ctx_t *ctx = (mqtt_ctx_t *)userdata;
+ hwinfo_t *hwinfo = (hwinfo_t *)ctx->userdata;
+ int rv = 0;
+ char msg[128];
+ float temp = 0.0; /* temperature */
+ int retain = 0;
+ static time_t last_time = 0;
+
+ /* publish time is not arrive */
+ if( !check_timeout(&last_time, ctx->interval) )
+ {
+ return ;
+ }
+
+ log_debug("Publish topic '%s'\n", ctx->pubTopic);
+
+ if( hwinfo->ds18b20 )
+ {
+ memset(msg, 0, sizeof(msg));
+
+ log_debug("DS18B20 temperature sensor enabled, start broadcast it\n");
+
+ if( ds18b20_get_temperature(&temp)<0 )
+ return ;
+
+ snprintf(msg, sizeof(msg), "{\"temperature\":%.2f}", temp);
+ rv = mosquitto_publish(mosq, NULL, ctx->pubTopic, strlen(msg), msg, ctx->pubQos, retain);
+ if( rv )
+ {
+ log_error("Publisher broadcast message '%s' failure: %d\n", msg, rv);
+ }
+ else
+ {
+ log_info("Publisher broadcast message '%s' ok\n", msg);
+ }
+ }
+
+ return ;
+}
+
+void sub_connect_callback(struct mosquitto *mosq, void *userdata, int result)
+{
+ mqtt_ctx_t *ctx = (mqtt_ctx_t *)userdata;
+
+ if( result )
+ {
+ log_error("mosquitto connect to broker server failed, rv=%d\n", result);
+ return ;
+ }
+
+ log_info("mosquitto connect to broker server[%s:%d] successfully\n", ctx->host, ctx->port);
+ mosquitto_subscribe(mosq, NULL, ctx->subTopic, ctx->subQos);
+}
+
+void sub_disconnect_callback(struct mosquitto *mosq, void *userdata, int result)
+{
+ mqtt_ctx_t *ctx = (mqtt_ctx_t *)userdata;
+
+ log_warn("mosquitto disconnect to broker server[%s:%d], reason=%d\n", ctx->host, ctx->port, result);
+}
+
+void proc_json_items(cJSON *root, mqtt_ctx_t *ctx)
+{
+ cJSON *item_method;
+ cJSON *item_params;
+ cJSON *item_device;
+ cJSON *item_status;
+
+ char *method;
+ char *device;
+ int status;
+
+ /* 获取 method 字段 */
+ item_method = cJSON_GetObjectItem(root, "method");
+ if (item_method == NULL || !cJSON_IsString(item_method))
+ {
+ log_error("JSON missing method\n");
+ return;
+ }
+ method = item_method->valuestring;
+
+ /* 只处理 setValue 命令 */
+ if (strcmp(method, "setValue") != 0)
+ {
+ log_error("Ignore method: %s\n", method);
+ return;
+ }
+
+ /* 获取 params 对象 */
+ item_params = cJSON_GetObjectItem(root, "params");
+ if (item_params == NULL || !cJSON_IsObject(item_params))
+ {
+ log_error("JSON missing params\n");
+ return;
+ }
+
+ /* 获取 params.device */
+ item_device = cJSON_GetObjectItem(item_params, "device");
+ if (item_device == NULL || !cJSON_IsString(item_device))
+ {
+ log_error("JSON missing params.device\n");
+ return;
+ }
+ device = item_device->valuestring;
+
+ /* 获取 params.status (布尔值) */
+ item_status = cJSON_GetObjectItem(item_params, "status");
+ if (item_status == NULL || !(cJSON_IsBool(item_status)))
+ {
+ log_error("JSON missing params.status\n");
+ return;
+ }
+ status = cJSON_IsTrue(item_status) ? ON : OFF;
+
+ /* 映射 Light 名称并调用控制函数 */
+ if ( strstr(device, "Indoor") || strstr(device, "indoor"))
+ {
+ turn_light("indoor", status);
+ }
+ else if ( strstr(device, "Hallway") || strstr(device, "hallway") )
+ {
+ turn_light("hallway", status);
+ }
+
+ return;
+}
+
+void sub_message_callback(struct mosquitto *mosq, void *userdata, const struct mosquitto_message *message)
+{
+ mqtt_ctx_t *ctx = (mqtt_ctx_t *)userdata;
+
+ cJSON *root = NULL;
+
+ if ( !message->payloadlen )
+ {
+ log_error("%s (null)\n", message->topic);
+ return ;
+ }
+
+ log_info("Subscriber receive message: '%s'\n", message->payload);
+
+ root = cJSON_Parse(message->payload);
+ if( !root )
+ {
+ log_error("cJSON_Parse parser failure: %s\n", cJSON_GetErrorPtr());
+ return ;
+ }
+
+ proc_json_items(root, ctx);
+
+ /* must delete it, or it will result memory leak */
+ cJSON_Delete(root);
+
+ return ;
+}
+
+void *thingsboard_worker(void *args)
+{
+ mqtt_ctx_t *ctx = (mqtt_ctx_t *)args;
+ struct mosquitto *mosq;
+ bool session = true;
+ int rv = 0;
+
+ mosq = mosquitto_new(ctx->devid, session, ctx);
+ if( !mosq )
+ {
+ log_error("mosquitto_new failure\n");
+ return NULL;
+ }
+
+ /* connnect to broker by token or uid/pwd */
+ if( strlen(ctx->token ) > 0)
+ {
+ log_info("Using token authentication: '%s'\n", ctx->token);
+ mosquitto_username_pw_set(mosq, ctx->token, NULL);
+ }
+ else if( strlen(ctx->uid)> 0 && strlen(ctx->pwd)> 0 )
+ {
+ log_info("Using username/password authentication\n");
+ mosquitto_username_pw_set(mosq, ctx->uid, ctx->pwd);
+ }
+
+ /* set callback functions */
+ mosquitto_connect_callback_set(mosq, sub_connect_callback);
+ mosquitto_disconnect_callback_set(mosq, sub_disconnect_callback);
+ mosquitto_message_callback_set(mosq, sub_message_callback);
+
+ while( !g_signal.stop )
+ {
+ /* connect to MQTT broker */
+ if( mosquitto_connect(mosq, ctx->host, ctx->port, ctx->keepalive) )
+ {
+ log_error("mosquitto connect to broker[%s:%d] failure: %s\n", ctx->host, ctx->port, strerror(errno));
+ sleep(1);
+ continue;
+ }
+
+ while(!g_signal.stop)
+ {
+ pub_connect_callback(mosq, ctx, MOSQ_ERR_SUCCESS);
+
+ /* MQTT process in nonblock mode, timeout for 1s */
+ if( MOSQ_ERR_SUCCESS != (rv = mosquitto_loop(mosq, 1000, 1)) )
+ {
+ log_warn("MQTT loop error: %s, reconnecting...\n", mosquitto_strerror(rv));
+ break;
+ }
+ }
+
+ mosquitto_disconnect(mosq);
+ sleep(1);
+ }
+
+ mosquitto_destroy(mosq);
+ return NULL;
+}
--
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