Reduce memory consumption; fix syslog alloc when disabled

cmd/handlers.c

@@ -3,6 +3,7 @@
 // Adapted from: github.com/tuanpmt/esp_bridge, Created on: Jan 9, 2015, Author: Minh
 
 #include "esp8266.h"
+#include "sntp.h"
 #include "cmd.h"
 #include <cgiwifi.h>
 #ifdef MQTT
@@ -21,6 +22,7 @@
 static void cmdNull(CmdPacket *cmd);
 static void cmdSync(CmdPacket *cmd);
 static void cmdWifiStatus(CmdPacket *cmd);
+static void cmdGetTime(CmdPacket *cmd);
 static void cmdAddCallback(CmdPacket *cmd);
 
 // keep track of last status sent to uC so we can notify it when it changes
@@ -33,6 +35,7 @@ const CmdList commands[] = {
   {CMD_SYNC,            "SYNC",           cmdSync},        // synchronize
   {CMD_WIFI_STATUS,     "WIFI_STATUS",    cmdWifiStatus},
   {CMD_CB_ADD,          "ADD_CB",         cmdAddCallback},
+  {CMD_GET_TIME,        "GET_TIME",       cmdGetTime},
 #ifdef MQTT
   {CMD_MQTT_SETUP,      "MQTT_SETUP",     MQTTCMD_Setup},
   {CMD_MQTT_PUBLISH,    "MQTT_PUB",       MQTTCMD_Publish},
@@ -149,6 +152,13 @@ cmdWifiStatus(CmdPacket *cmd) {
   return;
 }
 
+// Command handler for time
+static void ICACHE_FLASH_ATTR
+cmdGetTime(CmdPacket *cmd) {
+  cmdResponseStart(CMD_RESP_V, sntp_get_current_timestamp(), 0);
+  cmdResponseEnd();
+  return;
+}
 
 // Command handler to add a callback to the named-callbacks list, this is for a callback to the uC
 static void ICACHE_FLASH_ATTR

esp-link/cgimqtt.c

@@ -134,13 +134,16 @@ int ICACHE_FLASH_ATTR cgiMqttSet(HttpdConnData *connData) {
     mqtt_client_init();
 
   // if just enable changed we just need to bounce the client
-  } 
+  } else if (mqtt_en_chg > 0) {
-  else if (mqtt_en_chg > 0) {
     DBG("MQTT server enable=%d changed\n", flashConfig.mqtt_enable);
-    if (flashConfig.mqtt_enable && strlen(flashConfig.mqtt_host) > 0)
+    if (flashConfig.mqtt_enable && strlen(flashConfig.mqtt_host) > 0) {
+      MQTT_Free(&mqttClient); // safe even if not connected
+      mqtt_client_init();
       MQTT_Reconnect(&mqttClient);
-    else
+    } else {
       MQTT_Disconnect(&mqttClient);
+      MQTT_Free(&mqttClient); // safe even if not connected
+    }
   }
 
   // no action required if mqtt status settings change, they just get picked up at the

esp-link/main.c

@@ -43,6 +43,14 @@
 } while ( 0 )
 #endif
 
+#ifdef MEMLEAK_DEBUG
+#include "mem.h"
+bool ICACHE_FLASH_ATTR check_memleak_debug_enable(void)
+{
+    return MEMLEAK_DEBUG_ENABLE;
+}
+#endif
+
 /*
 This is the main url->function dispatching data struct.
 In short, it's a struct with various URLs plus their handlers. The handlers can
@@ -133,6 +141,7 @@ void user_init(void) {
   os_delay_us(10000L);
   os_printf("\n\n** %s\n", esp_link_version);
   os_printf("Flash config restore %s\n", restoreOk ? "ok" : "*FAILED*");
+  prHeapTimerCb(0);
   // Status LEDs
   statusInit();
   serledInit();
@@ -166,10 +175,16 @@ void user_init(void) {
   // Init SNTP service
   cgiServicesSNTPInit();
 #ifdef MQTT
+  if (flashConfig.mqtt_enable) {
     NOTICE("initializing MQTT");
     mqtt_client_init();
+  }
 #endif
   NOTICE("initializing user application");
   app_init();
   NOTICE("Waiting for work to do...");
+#ifdef MEMLEAK_DEBUG
+  system_show_malloc();
+#endif
+  prHeapTimerCb(0);
 }

esp-link/task.h

@@ -12,7 +12,7 @@
 #define USRTASK_H
 
 #define _taskPrio        1
-#define _task_queueLen  64
+#define _task_queueLen   8
 
 uint8_t register_usr_task (os_task_t event);
 bool	post_usr_task(uint8_t task, os_param_t par);

include/esp8266.h

@@ -2,6 +2,9 @@
 #ifndef _ESP8266_H_
 #define _ESP8266_H_
 
+#undef MEMLEAK_DEBUG
+#define USE_OPTIMIZE_PRINTF
+
 #include <user_config.h>
 #include <ctype.h>
 #include <stdio.h>

include/espmissingincludes.h

@@ -62,9 +62,9 @@ int os_printf_plus(const char *format, ...)  __attribute__((format(printf, 1, 2)
 
 // memory allocation functions are "different" due to memory debugging functionality
 // added in SDK 1.4.0
-void vPortFree(void *ptr, char * file, int line);
+void vPortFree(void *ptr, const char * file, int line);
-void *pvPortMalloc(size_t xWantedSize, char * file, int line);
+void *pvPortMalloc(size_t xWantedSize, const char * file, int line);
-void *pvPortZalloc(size_t, char * file, int line);
+void *pvPortZalloc(size_t, const char * file, int line);
 void *vPortMalloc(size_t xWantedSize);
 void pvPortFree(void *ptr);
 

mqtt/mqtt_cmd.c

@@ -185,6 +185,10 @@ MQTTCMD_Setup(CmdPacket *cmd) {
   if (cmdGetArgc(&req) != 4) return;
 
 #if 0
+// This section is commented-out because we're using the same client as esp-link is using itself,
+// i.e. the one set-up in the Web UI. This code was here when we used a separate client for the
+// attached uC, which just makes life more complicated...
+
   if (cmdGetArgc(&req) != 9)
     return 0;
 
@@ -261,6 +265,10 @@ MQTTCMD_Setup(CmdPacket *cmd) {
 }
 
 #if 0
+// This section is commented-out because we're using the same client as esp-link is using itself,
+// i.e. the one set-up in the Web UI. This code was here when we used a separate client for the
+// attached uC, which just makes life more complicated...
+
 uint32_t ICACHE_FLASH_ATTR
 MQTTCMD_Connect(CmdPacket *cmd) {
   CmdRequest req;

syslog/syslog.c

@@ -46,7 +46,6 @@ static void ICACHE_FLASH_ATTR syslog_udp_recv_cb(void *arg, char *pusrdata, unsi
 
 #define syslog_send_udp() post_usr_task(syslog_task,0)
 
-#ifdef SYSLOG_DBG
 static char ICACHE_FLASH_ATTR *syslog_get_status(void) {
       switch (syslogState)
       {
@@ -77,11 +76,13 @@ static char ICACHE_FLASH_ATTR *syslog_get_status(void) {
       }
       return "UNKNOWN ";
 }
-#endif
 
 static void ICACHE_FLASH_ATTR syslog_set_status(enum syslog_state state) {
   syslogState = state;
   DBG("[%dµs] %s: %s (%d)\n", WDEV_NOW(), __FUNCTION__, syslog_get_status(), state);
+#ifndef SYSLOG_DBG
+  os_printf("Syslog state: %s\n", syslog_get_status());
+#endif
 }
 
 static void ICACHE_FLASH_ATTR syslog_timer_arm(int delay) {
@@ -261,6 +262,7 @@ void ICACHE_FLASH_ATTR syslog_init(char *syslog_host)
 {
 
   DBG("[%uµs] %s\n", WDEV_NOW(), __FUNCTION__);
+  os_printf("SYSLOG host=%s *host=0x%x\n", syslog_host, *syslog_host);
   if (!*syslog_host) {
     syslog_set_status(SYSLOG_HALTED);
     return;
@@ -504,8 +506,7 @@ void ICACHE_FLASH_ATTR syslog(uint8_t facility, uint8_t severity, const char *ta
 {
   DBG("[%dµs] %s status: %s\n", WDEV_NOW(), __FUNCTION__, syslog_get_status());
 
-  if (syslogState == SYSLOG_ERROR ||
+  if (flashConfig.syslog_host[0] == 0 || syslogState == SYSLOG_ERROR || syslogState == SYSLOG_HALTED)
-    syslogState == SYSLOG_HALTED)
     return;
 
   if (severity > flashConfig.syslog_filter)