Imran Sheikh
Using the IDW01M1 board for the STM32 Nucleo F401RE board. This project reads data from Air quality MQ135 click and then read DHT11 values and publish on a private channel on the Thingspeak. A Good example of IoT project with the IDW01 board
Dependencies: DHT11 NetworkSocketAPI X_NUCLEO_IDW01M1v2 mbed
Fork of
AirQuality_Thingspeak
by 
Imran Sheikh
This example project uses IDW01M1 WiFi Module to support IoT projects with example sensors such as Airquality Click MQ135 and DHT11 sensor. The sensor values are then published on the Thingspeak channel. The program uses the DHT11, NetworksocketApi and the SPW library fromX_Nucleo_IDW01M1_v2. This project can easily be adapted to add further sensors or use ESP8266 WiFi module as plenty of support is available on mbed.
Diff: main.cpp
- Revision:
- 12:80d8e97e81f2
- Parent:
- 11:0b4472769b08
- Child:
- 13:9a2016106dae
--- a/main.cpp Fri Jan 13 15:31:35 2017 +0000
+++ b/main.cpp Mon Jan 16 13:26:50 2017 +0000
@@ -18,27 +18,6 @@
#include "SpwfInterface.h"
#include "TCPSocket.h"
-//www.mbed.com CA certificate in PEM format
-char CA_cert []="-----BEGIN CERTIFICATE-----\r\n"
-"MIIDVDCCAjygAwIBAgIDAjRWMA0GCSqGSIb3DQEBBQUAMEIxCzAJBgNVBAYTAlVT\r\n"
-"MRYwFAYDVQQKEw1HZW9UcnVzdCBJbmMuMRswGQYDVQQDExJHZW9UcnVzdCBHbG9i\r\n"
-"YWwgQ0EwHhcNMDIwNTIxMDQwMDAwWhcNMjIwNTIxMDQwMDAwWjBCMQswCQYDVQQG\r\n"
-"EwJVUzEWMBQGA1UEChMNR2VvVHJ1c3QgSW5jLjEbMBkGA1UEAxMSR2VvVHJ1c3Qg\r\n"
-"R2xvYmFsIENBMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA2swYYzD9\r\n"
-"9BcjGlZ+W988bDjkcbd4kdS8odhM+KhDtgPpTSEHCIjaWC9mOSm9BXiLnTjoBbdq\r\n"
-"fnGk5sRgprDvgOSJKA+eJdbtg/OtppHHmMlCGDUUna2YRpIuT8rxh0PBFpVXLVDv\r\n"
-"iS2Aelet8u5fa9IAjbkU+BQVNdnARqN7csiRv8lVK83Qlz6cJmTM386DGXHKTubU\r\n"
-"1XupGc1V3sjs0l44U+VcT4wt/lAjNvxm5suOpDkZALeVAjmRCw7+OC7RHQWa9k0+\r\n"
-"bw8HHa8sHo9gOeL6NlMTOdReJivbPagUvTLrGAMoUgRx5aszPeE4uwc2hGKceeoW\r\n"
-"MPRfwCvocWvk+QIDAQABo1MwUTAPBgNVHRMBAf8EBTADAQH/MB0GA1UdDgQWBBTA\r\n"
-"ephojYn7qwVkDBF9qn1luMrMTjAfBgNVHSMEGDAWgBTAephojYn7qwVkDBF9qn1l\r\n"
-"uMrMTjANBgkqhkiG9w0BAQUFAAOCAQEANeMpauUvXVSOKVCUn5kaFOSPeCpilKIn\r\n"
-"Z57QzxpeR+nBsqTP3UEaBU6bS+5Kb1VSsyShNwrrZHYqLizz/Tt1kL/6cdjHPTfS\r\n"
-"tQWVYrmm3ok9Nns4d0iXrKYgjy6myQzCsplFAMfOEVEiIuCl6rYVSAlk6l5PdPcF\r\n"
-"PseKUgzbFbS9bZvlxrFUaKnjaZC2mqUPuLk/IH2uSrW4nOQdtqvmlKXBx4Ot2/Un\r\n"
-"hw4EbNX/3aBd7YdStysVAq45pmp06drE57xNNB6pXE0zX5IJL4hmXXeXxx12E6nV\r\n"
-"5fEWCRE11azbJHFwLJhWC9kXtNHjUStedejV0NxPNO3CBWaAocvmMw==\r\n"
-"-----END CERTIFICATE-----\r\n";
//------------------------------------
@@ -126,40 +105,6 @@
pc.printf("\r\nClosing Socket\r\n");
socket.close();
pc.printf("\r\nUnsecure Socket Test complete.\r\n");
-
-// Start Secure Socket connection test (one way server autentication only)
- time_t ctTime;
- ctTime = time(NULL);
- printf ("Start Secure Socket connection with one way server autentication test\n\r");
- printf("Initial System Time is: %s\r\n", ctime(&ctTime));
- printf("Need to adjust time? if yes enter time in seconds elapsed since Epoch (cmd: date +'%%s'), otherwise enter 0 ");
- int t=0;
- scanf("%d",&t);
- printf ("entered time is: %d \n\r", t);
- if (t != 0) { time_t txTm = t; set_time(txTm); } // set Nucleo system time
- ctTime = time(NULL);
- printf ("The current system time is: %s", ctime (&ctTime)); // set WiFi module systm time
- if (!spwf.set_time(ctTime)) printf ("ERROR set_time\n\r");
- if (!spwf.clean_TLS_certificate(ALL)) printf ("ERROR clean_TLS_certificate\n\r");
- if (!spwf.set_TLS_certificate(CA_cert, sizeof(CA_cert), FLASH_CA_ROOT_CERT)) printf ("ERROR set_TLS_certificate\n\r");
- if (!spwf.set_TLS_SRV_domain("*.mbed.com",FLASH_DOMAIN)) printf ("ERROR set_TLS_CA_domain\n\r");
-// NOTE: the Wifi API set_secure_mode() and set_unsecure_mode() refers to the whole interface so the socket must be created / opened after
-// having set the desidered mode (deft unsecure).
-//#define SEC_MODE1 // two possible ways to secure connect a socket are shown
- spwf.gethostbyname(&addr,"www.mbed.com"); // ask DNS to resolve URL/IP
- addr.set_port(443);
- spwf.set_secure_mode();
- socket.open(&spwf);
- spwf.set_unsecure_mode();
- printf ("Connecting to www.mbed.com IP: %s ...\n\r", addr.get_ip_address());
-#ifdef SEC_MODE1
- err = socket.connect(addr);
-#else
- err = socket.connect("www.mbed.com", 443);
-#endif
- if (err != 0 )printf ("ERROR secure socket connection failed: %d\n\r", err);
- else printf ("--->>> Secure socket CONNECTED to: %s\n\r", addr.get_ip_address());
- socket.close();
printf ("Socket closed\n\r");
spwf.disconnect();
printf ("WIFI disconnected, exiting ...\n\r");