Example of AWS IoT connection and Web Dashboard thru STM32 Nucleo evaluation board and mbed OS.
Dependencies: X_NUCLEO_IKS01A1 mbed FP MQTTPacket DnsQuery ATParser
Introduction
The demo is aimed to STM32 Nucleo board with WiFi and sensors expansions. The board is a "thing" for the AWS IoT service. It updates IoT service shadow with sensors data every second and checks subscription messages.
Hardware Configuration
- NUCLEO-F401RE - Nucleo Development Board
- X-NUCLEO-IDW01M1 - Wi-Fi expansion board for STM32 Nucleo
- X-NUCLEO-IKS01A1 - Motion MEMS and environmental sensor expansion board for STM32 Nucleo
Software Configuration
- Import this Project to mbed online compiler
- Find the next part of code in main.cpp file ...
WiFi network credential
#include "mbed.h" // WiFi network credential #define SSID "" // Network must be visible otherwise it can't connect #define PASSW "" #error "Wifi SSID & password empty"
- ... And set it to your Network Name and Password. Do not forget to remove "#error" pragma line.
Information
Nucleo WiFi module is not the same as your smartphone or laptope - it is based on demo board. To avoid connection problems:
- Place Nucleo as close to WiFi hot spot as possible. Or...
- Turn on mobile hot spot in your laptop as close to the device as possible.
- Make sure that hot spot permits 2.4 GHz band communications
- Setup BackEnd and store certificates using this backend setup instruction
- Find AWS_IOT_MQTT_HOST define and change it to HTTPS point mentioned in your AWS IoT thing properties named "interact"
#define AWS_IOT_MQTT_HOST "xxxxxxxxxx.iot.us-east-1.amazonaws.com" //Use your own host.
- Find the certificate defines clientCRT and clientKey in main.cpp file and change it to ones provided by Amazon.
/********************************************************************************************** *********************************************************************************************** Device Identity Certificates: Modify for your AWS IoT Thing *********************************************************************************************** ***********************************************************************************************/ /**************************************** (somecode)-certificate.pem.crt - Amazon signed PEM sertificate. *****************************************/ //This Client cert is example. Use own instead. const uint8_t clientCRT[] = "\ -----BEGIN CERTIFICATE-----\n\ MIIDBjCCAe6gAwIBAgIUVph856omeIxW3UPioq+UrX1DbwowDQYJKoZIhvcNAQEL\ BQAwTTFLMEkGA1UECwxCQW1hem9uIFdlYiBTZXJ2aWNlcyBPPUFtYXpvbi5jb20g\ SW5jLiBMPVNlYXR0bGUgU1Q9V2FzaGluZ3RvbiBDPVVTMB4XDTE3MDUyNTExNTEy\ OVoXDTQ5MTIzMTIzNTk1OVowgZUxCzAJBgNVBAYTAkJZMQ4wDAYDVQQIDAVNaW5z\ azEOMAwGA1UEBwwFTWluc2sxFzAVBgNVBAoMDktsaWthLVRlY2ggTExDMRcwFQYD\ VQQLDA5LbGlrYS1UZWNoIExMQzEMMAoGA1UEAwwDUm5EMSYwJAYJKoZIhvcNAQkB\ FhdtdmF0YWxldUBrbGlrYS10ZWNoLmNvbTBZMBMGByqGSM49AgEGCCqGSM49AwEH\ A0IABCJgOQJmoTBJVPfli9Hm/JVixaxkY5rtlgrYO3hSl633A2hg0P/ue0wXDbF3\ aQ0X57IRFE4k4FEbr3UXjT/IczKjYDBeMB8GA1UdIwQYMBaAFK3YzTUPlYB2Li75\ i/z8rEogr1d6MB0GA1UdDgQWBBT18HXBaXFJuAR/0SwegnxJ+pyJ6TAMBgNVHRMB\ Af8EAjAAMA4GA1UdDwEB/wQEAwIHgDANBgkqhkiG9w0BAQsFAAOCAQEAb0Ux1aH5\ RLxjrfGqXN6rPVqh8QQRS+AyBfzmaQN8HaPZMkX5WxXLvcn0A3uWlwQxPPkcZ4zf\ 51GHtFFQWB4YZ8dx8mUQ0v/j7onHjCJgZ8iDgwOyKMGtnsDZWCakQw+a6cj+NrMZ\ tzhjwCzEEP6ePcbXwErI5OOzLuWns2L/JEr2wWNkokgRuS8ewr/SQ9OLWIWa2rFM\ ahPNTb3y/qBeWdjeJmhI+TOxdqIpsF8roWP25zwo/zkzCHCjXFBrL+0CA4MpxIl9\ x02i7aAhlJ6ys80lDxdeWeeQJXRKkGknP8mcmKn3iEqqJ5s1dQePj2b5d3ldatya\ wsxQBqqZXzIWEw==\ \n\ -----END CERTIFICATE-----\n"; /********************************************************************************************** *********************************************************************************************** Private Key: Modify for your AWS IoT Thing *********************************************************************************************** ***********************************************************************************************/ /********************************************************************8**************************************** nucleo.key.pem - client key generated according to readme. **************************************************************************************************************/ //This Client Key is example. Use own instead. const uint8_t clientKey[] ="\ -----BEGIN EC PARAMETERS-----\n\ BggqhkjOPQMBBw==\ -----END EC PARAMETERS-----\n\ -----BEGIN EC PRIVATE KEY-----\n\ MHcCAQEEIHPRfWSC8/k/BsqDWKuP15dXsI9fGwpkTIsLZe6mIrAAoAoGCCqGSM49\ AwEHoUQDQgAEImA5AmahMElU9+WL0eb8lWLFrGRjmu2WCtg7eFKXrfcDaGDQ/+57\ TBcNsXdpDRfnshEUTiTgURuvdReNP8hzMg==\ -----END EC PRIVATE KEY-----\n";
Build and Check
- Plugin your board to USB of your PC. USB Disk Drive and USB COM Port should appear in your system.
- Open any Serial Console, connect it to your USB Serial Port and setup speed equal to 115200.
- Compile this Project and save .bin file to USB Disk Drive
- After board reset you should see next log in serial console:
X-NUCLEO-IDW01M1 mbed Application connecting to AP LOG: int main() L#361 Connected to WiFI. LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#186 ===================================== LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#187 Connecting WiFi. LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#188 Nucleo IP ADDRESS: X.X.X.X LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#189 Nucleo MAC ADDRESS: 00:11:22:33:44:55 LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#190 Server Hostname: xxxxxxxx.iot.us-east-1.amazonaws.com port: 8883 LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#191 Client ID: Nucleo LOG: int connect(MQTT::Client<MQTTWiFi, Countdown, 350, 5> *, MQTTWiFi *) L#194 ===================================== LOG: int MQTTSocket::getNTPtime(int) L#58 Success receiving time from ntp server. Tick from 1 Jan 1970 is equal to 1505399292. --->TCP Connected --->MQTT Connected --->>>MQTT subscribed to: Nucleo/test Length - 245, Publishing {"state": {"reported": {"temperature": 23.690001, "humidity": 98.190002, "pressure": 982.869141, "accelerometer": [-0.009000, 0.030000, 0.971000], "gyroscope": [0.420000, -2.660000, 1.750000], "magnetometer": [-3.600000, -7.100000, 53.300000]}}} Length - 245, Publishing {"state": {"reported": {"temperature": 23.660000, "humidity": 98.010002, "pressure": 982.770264, "accelerometer": [-0.009000, 0.030000, 0.971000], "gyroscope": [0.770000, -2.310000, 1.470000], "magnetometer": [-3.100000, -8.300000, 54.200000]}}} Length - 245, Publishing {"state": {"reported": {"temperature": 23.670000, "humidity": 98.129997, "pressure": 982.724121, "accelerometer": [-0.008000, 0.029000, 0.971000], "gyroscope": [0.630000, -2.380000, 1.400000], "magnetometer": [-3.100000, -7.900000, 53.400000]}}} Length - 245, Publishing {"state": {"reported": {"temperature": 23.690001, "humidity": 98.019997, "pressure": 982.840088, "accelerometer": [-0.009000, 0.030000, 0.972000], "gyroscope": [0.700000, -2.450000, 1.540000], "magnetometer": [-3.700000, -7.900000, 53.400000]}}} Length - 245, Publishing {"state": {"reported": {"temperature": 23.709999, "humidity": 98.040001, "pressure": 982.828613, "accelerometer": [-0.009000, 0.030000, 0.971000], "gyroscope": [0.630000, -2.520000, 1.470000], "magnetometer": [-2.900000, -7.400000, 52.400000]}}} Length - 245, Publishing {"state": {"reported": {"temperature": 23.719999, "humidity": 97.860001, "pressure": 982.917236, "accelerometer": [-0.026000, 0.103000, 0.891000], "gyroscope": [1.050000, -2.310000, 1.260000], "magnetometer": [-3.300000, -7.100000, 53.500000]}}}
Information
Device connection state might be checked by Green Led on the board. Green light means that device is connected and transferring data to cloud.
- Configure and start your dashboard using instruction and corresponding sources from github
- Use Blue button to set up markers to charts.
- Use AWS IoT console MQTT Client to test device subscription to "Nucleo/test". Just publish any message to this topic and serial port output.
- PROFIT!
NetworkSocketAPI/UDPSocket.h@0:4cdaf9b1e7d0, 2017-09-27 (annotated)
- Committer:
- PavelSavyhin
- Date:
- Wed Sep 27 14:40:52 2017 +0300
- Revision:
- 0:4cdaf9b1e7d0
Initial commit
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
PavelSavyhin | 0:4cdaf9b1e7d0 | 1 | /* UDPSocket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 2 | * Copyright (c) 2015 ARM Limited |
PavelSavyhin | 0:4cdaf9b1e7d0 | 3 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 5 | * you may not use this file except in compliance with the License. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 6 | * You may obtain a copy of the License at |
PavelSavyhin | 0:4cdaf9b1e7d0 | 7 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
PavelSavyhin | 0:4cdaf9b1e7d0 | 9 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 10 | * Unless required by applicable law or agreed to in writing, software |
PavelSavyhin | 0:4cdaf9b1e7d0 | 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
PavelSavyhin | 0:4cdaf9b1e7d0 | 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 13 | * See the License for the specific language governing permissions and |
PavelSavyhin | 0:4cdaf9b1e7d0 | 14 | * limitations under the License. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 15 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 16 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 17 | #ifndef UDPSOCKET_H |
PavelSavyhin | 0:4cdaf9b1e7d0 | 18 | #define UDPSOCKET_H |
PavelSavyhin | 0:4cdaf9b1e7d0 | 19 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 20 | #include "Socket.h" |
PavelSavyhin | 0:4cdaf9b1e7d0 | 21 | #include "NetworkStack.h" |
PavelSavyhin | 0:4cdaf9b1e7d0 | 22 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 23 | /** UDP socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 24 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 25 | class UDPSocket : public Socket { |
PavelSavyhin | 0:4cdaf9b1e7d0 | 26 | public: |
PavelSavyhin | 0:4cdaf9b1e7d0 | 27 | /** Create an uninitialized socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 28 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 29 | * Must call open to initialize the socket on a network stack. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 30 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 31 | UDPSocket(); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 32 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 33 | /** Create a socket on a network stack |
PavelSavyhin | 0:4cdaf9b1e7d0 | 34 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 35 | * Creates and opens a socket on the specified network stack. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 36 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 37 | * @param iface Network stack as target for socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 38 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 39 | UDPSocket(NetworkStack *iface); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 40 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 41 | /** Opens a socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 42 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 43 | * Creates a network socket on the specified network stack. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 44 | * Not needed if stack is passed to the socket's constructor. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 45 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 46 | * @param iface Network stack as target for socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 47 | * @return 0 on success, negative error code on failure |
PavelSavyhin | 0:4cdaf9b1e7d0 | 48 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 49 | virtual int open(NetworkStack *iface); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 50 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 51 | /** Send a packet over a UDP socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 52 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 53 | * Sends data to the specified address specified by either a domain name |
PavelSavyhin | 0:4cdaf9b1e7d0 | 54 | * or an IP address and port. Returns the number of bytes sent from the |
PavelSavyhin | 0:4cdaf9b1e7d0 | 55 | * buffer. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 56 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 57 | * By default, sendto blocks until data is sent. If socket is set to |
PavelSavyhin | 0:4cdaf9b1e7d0 | 58 | * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned |
PavelSavyhin | 0:4cdaf9b1e7d0 | 59 | * immediately. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 60 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 61 | * @param host Hostname of the remote host |
PavelSavyhin | 0:4cdaf9b1e7d0 | 62 | * @param port Port of the remote host |
PavelSavyhin | 0:4cdaf9b1e7d0 | 63 | * @param data Buffer of data to send to the host |
PavelSavyhin | 0:4cdaf9b1e7d0 | 64 | * @param size Size of the buffer in bytes |
PavelSavyhin | 0:4cdaf9b1e7d0 | 65 | * @return Number of sent bytes on success, negative error |
PavelSavyhin | 0:4cdaf9b1e7d0 | 66 | * code on failure |
PavelSavyhin | 0:4cdaf9b1e7d0 | 67 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 68 | int sendto(const char *host, uint16_t port, const void *data, unsigned size); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 69 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 70 | /** Send a packet over a UDP socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 71 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 72 | * Sends data to the specified address. Returns the number of bytes |
PavelSavyhin | 0:4cdaf9b1e7d0 | 73 | * sent from the buffer. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 74 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 75 | * By default, sendto blocks until data is sent. If socket is set to |
PavelSavyhin | 0:4cdaf9b1e7d0 | 76 | * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned |
PavelSavyhin | 0:4cdaf9b1e7d0 | 77 | * immediately. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 78 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 79 | * @param address The SocketAddress of the remote host |
PavelSavyhin | 0:4cdaf9b1e7d0 | 80 | * @param data Buffer of data to send to the host |
PavelSavyhin | 0:4cdaf9b1e7d0 | 81 | * @param size Size of the buffer in bytes |
PavelSavyhin | 0:4cdaf9b1e7d0 | 82 | * @return Number of sent bytes on success, negative error |
PavelSavyhin | 0:4cdaf9b1e7d0 | 83 | * code on failure |
PavelSavyhin | 0:4cdaf9b1e7d0 | 84 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 85 | int sendto(const SocketAddress &address, const void *data, unsigned size); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 86 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 87 | /** Receive a packet over a UDP socket |
PavelSavyhin | 0:4cdaf9b1e7d0 | 88 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 89 | * Receives data and stores the source address in address if address |
PavelSavyhin | 0:4cdaf9b1e7d0 | 90 | * is not NULL. Returns the number of bytes received into the buffer. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 91 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 92 | * By default, recvfrom blocks until data is sent. If socket is set to |
PavelSavyhin | 0:4cdaf9b1e7d0 | 93 | * non-blocking or times out, NSAPI_ERROR_WOULD_BLOCK is returned |
PavelSavyhin | 0:4cdaf9b1e7d0 | 94 | * immediately. |
PavelSavyhin | 0:4cdaf9b1e7d0 | 95 | * |
PavelSavyhin | 0:4cdaf9b1e7d0 | 96 | * @param address Destination for the source address or NULL |
PavelSavyhin | 0:4cdaf9b1e7d0 | 97 | * @param data Destination buffer for data received from the host |
PavelSavyhin | 0:4cdaf9b1e7d0 | 98 | * @param size Size of the buffer in bytes |
PavelSavyhin | 0:4cdaf9b1e7d0 | 99 | * @return Number of received bytes on success, negative error |
PavelSavyhin | 0:4cdaf9b1e7d0 | 100 | * code on failure |
PavelSavyhin | 0:4cdaf9b1e7d0 | 101 | */ |
PavelSavyhin | 0:4cdaf9b1e7d0 | 102 | int recvfrom(SocketAddress *address, void *data, unsigned size); |
PavelSavyhin | 0:4cdaf9b1e7d0 | 103 | }; |
PavelSavyhin | 0:4cdaf9b1e7d0 | 104 | |
PavelSavyhin | 0:4cdaf9b1e7d0 | 105 | #endif |