我已经做了几次尝试，在运气不佳的情况下在ESP8266模块上使用此库。 Microsoft已声明this回购应与ESP8266模块配合使用。起初它根本不起作用。我可以通过关闭日志记录来使其运行。现在它将运行一段时间，但最终会引发异常。 （我通常需要30分钟以上的时间才能获得异常）
iothub_client_sample_device_twin.c
// Copyright (c) Microsoft. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.
#include <stdio.h>
#include <stdlib.h>
#include "iot_configs.h"
#include "sample.h"
#include <AzureIoTHub.h>
#include <AzureIoTProtocol_MQTT.h>
/*String containing Hostname, Device Id & Device Key in one of the formats: */
/* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessKey=<device_key>" */
/* "HostName=<host_name>;DeviceId=<device_id>;SharedAccessSignature=<device_sas_token>" */
static const char* connectionString = IOT_CONFIG_CONNECTION_STRING;
static char msgText[1024];
static char propText[1024];
static bool g_continueRunning;
#define DOWORK_LOOP_NUM 100
static void deviceTwinCallback(DEVICE_TWIN_UPDATE_STATE update_state, const unsigned char* payLoad, size_t size, void* userContextCallback)
{
(void)userContextCallback;
printf("Device Twin update received (state=%s, size=%u): \r\n",
ENUM_TO_STRING(DEVICE_TWIN_UPDATE_STATE, update_state), size);
for (size_t n = 0; n < size; n++)
{
// printf("%c", payLoad[n]);
}
printf("\r\n");
}
static void reportedStateCallback(int status_code, void* userContextCallback)
{
(void)userContextCallback;
printf("Device Twin reported properties update completed with result: %d\r\n", status_code);
g_continueRunning = false;
}
void iothub_client_sample_device_twin_run(void)
{
// Result checks are omitted to simplify the sample.
// Please verify all returns on your production code.
IOTHUB_CLIENT_LL_HANDLE iotHubClientHandle;
g_continueRunning = true;
IOTHUB_CLIENT_TRANSPORT_PROVIDER protocol = MQTT_Protocol;
if (platform_init() != 0)
{
(void)printf("Failed to initialize the platform.\r\n");
}
else
{
if ((iotHubClientHandle = IoTHubClient_LL_CreateFromConnectionString(connectionString, protocol)) == NULL)
{
(void)printf("ERROR: iotHubClientHandle is NULL!\r\n");
}
else
{
bool traceOn = false;
// This json-format reportedState is created as a string for simplicity. In a real application
// this would likely be done with parson (which the Azure IoT SDK uses) or a similar tool.
const char* reportedState = "{ 'device_property': 'new_value'}";
size_t reportedStateSize = strlen(reportedState);
(void)IoTHubClient_LL_SetOption(iotHubClientHandle, OPTION_LOG_TRACE, &traceOn);
(void)IoTHubClient_LL_SetDeviceTwinCallback(iotHubClientHandle, deviceTwinCallback, iotHubClientHandle);
(void)IoTHubClient_LL_SendReportedState(iotHubClientHandle, (const unsigned char*)reportedState, reportedStateSize, reportedStateCallback, iotHubClientHandle);
do
{
IoTHubClient_LL_DoWork(iotHubClientHandle);
ThreadAPI_Sleep(100);
} while (g_continueRunning);
for (size_t index = 0; index < DOWORK_LOOP_NUM; index++)
{
IoTHubClient_LL_DoWork(iotHubClientHandle);
ThreadAPI_Sleep(100);
}
// LogInfo("IoTHubClient_LL_Destroy starting");
IoTHubClient_LL_Destroy(iotHubClientHandle);
// LogInfo("IoTHubClient_LL_Destroy okay");
}
platform_deinit();
}
}
void sample_run(void)
{
iothub_client_sample_device_twin_run();
}
日志
Attempting to connect to SSID: ******
scandone
scandone
state: 0 -> 2 (b0)
state: 2 -> 3 (0)
state: 3 -> 5 (10)
add 0
aid 5
cnt
connected with *******, channel 5
dhcp client start...
.ip:1.1.1.1,mask:1.1.1.1,gw:1.1.1.1
.
Connected to wifi
Fetching NTP epoch time failed! Waiting 2 seconds to retry.
Fetched NTP epoch time is: 1533994630
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Device Twin update received (state=DEVICE_TWIN_UPDATE_COMPLETE, size=341):
Device Twin reported properties update completed with result: 204
Fatal exception 3(LoadStoreErrorCause):
epc1=0x4000bf64, epc2=0x00000000, epc3=0x00000000, excvaddr=0x402561f3, depc=0x00000000
Exception (3):
epc1=0x4000bf64 epc2=0x00000000 epc3=0x00000000 excvaddr=0x402561f3 depc=0x00000000
ctx: cont
sp: 3fff1c20 end: 3fff2000 offset: 01a0
>>>stack>>>
3fff1dc0: 3fff0f8c 000002ae 000002ae 4010020c
3fff1dd0: 401050ef 00000053 3fff3a94 40100690
3fff1de0: 00000000 00000000 00000090 4020fda4
3fff1df0: 3fff0d3c 00000053 3fff3dec 4020ed8b
3fff1e00: 3fff8324 3fff5f34 3fff3a94 402100fc
3fff1e10: 00000053 00000000 3fff0d54 4020f5cc
3fff1e20: 3fff3dec 3fff3a94 000008ca 3fff2f14
3fff1e30: 3fff0d3c 00000053 00000000 4020f70d
3fff1e40: 00000000 00000000 00000d06 40206bd9
3fff1e50: 3fff1e70 40206532 00000171 3fff5f34
3fff1e60: 4020a800 000067d8 00000cfb 3fff2f14
3fff1e70: 402561f3 3fff3a90 ffff8000 000000ae
3fff1e80: 3fff61a8 00000686 3fff7b6c 40206523
3fff1e90: 00000000 008f4000 3fff7b6c 00000053
3fff1ea0: 3fff5f34 3fff2f14 3fff2f14 4020db89
3fff1eb0: 3fff5f34 3fff2f14 3fff2f14 4020aa15
3fff1ec0: 3fff6b4c 0000002e 00000000 40206f52
3fff1ed0: 0000002f 3fff1ee0 00000004 3fff7b6c
3fff1ee0: 00000000 3fff2f14 00000053 4020b5bd
3fff1ef0: 00000021 00000000 3fff7b0c 4020c60e
3fff1f00: 00000004 00000000 00000000 00000000
3fff1f10: 00000000 3fff3bcc 3fff8fd4 3fff3d54
3fff1f20: 3fff7b44 3fff74cc 3fff8fd4 40205265
3fff1f30: 3fff8ff0 3fff3b54 00000004 401004d8
3fff1f40: 3fff6fe4 008f4000 3fff336c 3fff6fec
3fff1f50: 3fff6198 3fff6184 3fff6fe4 40205f74
3fff1f60: 3fff0d38 00000000 3fff6fe4 4020179c
3fff1f70: 3fff6184 3fff0fd8 4020fe6c 3fff0fe0
3fff1f80: 3fff6fec 00000064 00000064 4020cbb3
3fff1f90: 3ffea1e3 00000000 3fff6fe4 3fff0fd8
3fff1fa0: 3fff0d38 00000000 3fff6fe4 40201100
3fff1fb0: 3ffea100 5b6ee686 3fff0fac 4020de68
3fff1fc0: 3fffdad0 00000000 3fff0fd0 40201140
3fff1fd0: 00000000 00000000 00000001 4020dc64
3fff1fe0: 3fffdad0 00000000 3fff0fd0 4020feb8
3fff1ff0: feefeffe feefeffe 3fff0fe0 40100710
<<<stack<<<