Diff: main.cpp

Revision:

0:6c6307c24f92

Child:

1:06af85d78aa1

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Fri Dec 18 19:42:47 2020 +0000
@@ -0,0 +1,222 @@
+#include "mbed.h"
+#include "https_request.h"
+#include "network-helper.h"
+#include "TCPSocket.h"
+#include "NTPClient.h"
+#include "HTS221Sensor.h"
+#include "MbedJSONValue.h"
+#include "OLEDDisplay.h"
+#include "Credentials.h"
+#include <string>
+
+// Name of the Device shown on Website
+char* DeviceName = "YOUR_DEVICE_NAME";
+
+// API Token
+string token = "Bearer ENTER_TOKEN_HERE";
+
+// Route to submit Temp
+char* ApiRoute = "https://alarm.davidlab.ch/api/temperature";
+
+// Trusted Root Certs
+const char* DST_ROOT_CA_X3 = "-----BEGIN CERTIFICATE-----\n"
+    "MIIDSjCCAjKgAwIBAgIQRK+wgNajJ7qJMDmGLvhAazANBgkqhkiG9w0BAQUFADA/\n"
+    "MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT\n"
+    "DkRTVCBSb290IENBIFgzMB4XDTAwMDkzMDIxMTIxOVoXDTIxMDkzMDE0MDExNVow\n"
+    "PzEkMCIGA1UEChMbRGlnaXRhbCBTaWduYXR1cmUgVHJ1c3QgQ28uMRcwFQYDVQQD\n"
+    "Ew5EU1QgUm9vdCBDQSBYMzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB\n"
+    "AN+v6ZdQCINXtMxiZfaQguzH0yxrMMpb7NnDfcdAwRgUi+DoM3ZJKuM/IUmTrE4O\n"
+    "rz5Iy2Xu/NMhD2XSKtkyj4zl93ewEnu1lcCJo6m67XMuegwGMoOifooUMM0RoOEq\n"
+    "OLl5CjH9UL2AZd+3UWODyOKIYepLYYHsUmu5ouJLGiifSKOeDNoJjj4XLh7dIN9b\n"
+    "xiqKqy69cK3FCxolkHRyxXtqqzTWMIn/5WgTe1QLyNau7Fqckh49ZLOMxt+/yUFw\n"
+    "7BZy1SbsOFU5Q9D8/RhcQPGX69Wam40dutolucbY38EVAjqr2m7xPi71XAicPNaD\n"
+    "aeQQmxkqtilX4+U9m5/wAl0CAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNV\n"
+    "HQ8BAf8EBAMCAQYwHQYDVR0OBBYEFMSnsaR7LHH62+FLkHX/xBVghYkQMA0GCSqG\n"
+    "SIb3DQEBBQUAA4IBAQCjGiybFwBcqR7uKGY3Or+Dxz9LwwmglSBd49lZRNI+DT69\n"
+    "ikugdB/OEIKcdBodfpga3csTS7MgROSR6cz8faXbauX+5v3gTt23ADq1cEmv8uXr\n"
+    "AvHRAosZy5Q6XkjEGB5YGV8eAlrwDPGxrancWYaLbumR9YbK+rlmM6pZW87ipxZz\n"
+    "R8srzJmwN0jP41ZL9c8PDHIyh8bwRLtTcm1D9SZImlJnt1ir/md2cXjbDaJWFBM5\n"
+    "JDGFoqgCWjBH4d1QB7wCCZAA62RjYJsWvIjJEubSfZGL+T0yjWW06XyxV3bqxbYo\n"
+    "Ob8VZRzI9neWagqNdwvYkQsEjgfbKbYK7p2CNTUQ\n"
+    "-----END CERTIFICATE-----\n";
+
+// Declare LEDs
+DigitalOut Led1(MBED_CONF_IOTKIT_LED1);
+DigitalOut Led2(MBED_CONF_IOTKIT_LED2);
+DigitalOut Led3(MBED_CONF_IOTKIT_LED3);
+DigitalOut Led4(MBED_CONF_IOTKIT_LED4);
+
+// OLED Init
+OLEDDisplay oled( MBED_CONF_IOTKIT_OLED_RST, MBED_CONF_IOTKIT_OLED_SDA, MBED_CONF_IOTKIT_OLED_SCL );
+
+// Temp Sensor Init
+static DevI2C devI2c( MBED_CONF_IOTKIT_I2C_SDA, MBED_CONF_IOTKIT_I2C_SCL );
+static HTS221Sensor hum_temp(&devI2c);
+
+// Network
+NetworkInterface* network;
+
+//Global temp var
+float temp;
+
+bool InitTime() {
+    oled.printf("Getting Time...");
+    NTPClient ntp(network);
+    time_t timestamp = ntp.get_timestamp();
+    
+    if (timestamp < 0) {
+        printf("An error occurred when getting the time. Code: %ld\r\n", timestamp);
+        return false;
+    }
+    else {
+        set_time(timestamp);
+        return true;
+    }
+}
+
+bool InitializeNetwork() {
+    
+    oled.clear();
+    oled.printf("Trying to Connect to Network...\n");
+    printf("Trying to Connect to Network...\n");
+    
+    // Network Init
+    network = connect_to_default_network_interface();
+    oled.clear();
+
+    if (!network) {
+        oled.printf("Cannot connect to the network\n");
+        printf("Cannot connect to the network\n");
+        return false;
+    }
+    else {
+        oled.printf("Connected to Network\n");
+        printf("Connected to Network\n");
+        return true;
+    }
+}
+
+void PrintTemp() {
+    oled.clear();
+    printf("Temp: %3.2f\n", temp);
+    oled.printf("Temp: %3.2f\n", temp);
+}
+
+char* SendRequest(float temperature) {
+
+    char stringTemp[20];
+    sprintf(stringTemp, "%f", temperature);
+    char timeBuffer[32];
+    
+    time_t seconds = time(NULL);
+    
+    strftime(timeBuffer, 32, "%F %T", localtime(&seconds));
+
+    HttpsRequest* post_req = new HttpsRequest(network, DST_ROOT_CA_X3, HTTP_POST, ApiRoute);
+    post_req->set_header("Content-Type", "application/json");
+    post_req->set_header("Authorization", token);
+
+    char body[255] = "{\"recorded\":\"";
+    strcat(body, stringTemp);
+    strcat(body, "\",\"recorded_at\":\"");
+    strcat(body, timeBuffer);
+    strcat(body, "\",\"device\":\"");
+    strcat(body, DeviceName);
+    strcat(body, "\"}");
+    
+    printf("%s\n", body);
+    
+    HttpResponse* post_res = post_req->send(body, strlen(body));
+    if (!post_res) {
+        printf("HttpRequest failed (error code %d)\n", post_req->get_error());
+    }    
+    
+    char* resp = (char*)post_res->get_body_as_string().c_str();
+    
+    delete post_req;
+    printf("%s\n", resp);
+    return resp;
+}
+
+void SetLEDStatusCode(char* response) {
+    MbedJSONValue parser;
+
+    parse(parser, response);
+    
+    int statusCode;
+    
+    statusCode = parser["code"].get<int>();
+    
+    if (statusCode == 0) {
+        PrintTemp();
+        Led1.write(0);
+        Led2.write(0);
+        Led3.write(0);
+        Led4.write(0);
+    }
+    else if(statusCode == 1) {
+        PrintTemp();
+        printf("Temperature is above the limits!\n");
+        oled.printf("Temperature is above the limits!\n");
+        Led1.write(1);
+        Led2.write(0);
+        Led3.write(0);
+        Led4.write(0);
+    }
+    else if(statusCode == 2) {
+        PrintTemp();
+        printf("Temperature is below the limits!\n");
+        oled.printf("Temperature is below the limits!\n");
+        Led1.write(0);
+        Led2.write(1);
+        Led3.write(0);
+        Led4.write(0);
+    }
+    else if(statusCode == 3) {
+        PrintTemp();
+        printf("Undefined Error!\n");
+        oled.printf("Undefined Error!\n");
+        Led1.write(0);
+        Led2.write(0);
+        Led3.write(1);
+        Led4.write(0);
+    }
+    else if(statusCode == 4) {
+        PrintTemp();
+        printf("Undefined Error!\n");
+        Led1.write(0);
+        Led2.write(0);
+        Led3.write(0);
+        Led4.write(1);
+    }
+}
+
+void InitializeTempSensor() {
+    
+    hum_temp.init(NULL);
+    hum_temp.enable();
+}
+
+int main() {
+    
+    if (!InitializeNetwork()) {
+        return 1;
+    }
+    
+    if (!InitTime()) {
+        return 1;
+    }
+    
+    time_t seconds = time(NULL);
+    printf("\rDate & Time: \r%s", ctime(&seconds));
+    
+    InitializeTempSensor();
+    
+    wait(2);
+    
+    while (true) {
+        oled.clear();
+        hum_temp.get_temperature(&temp);
+        SetLEDStatusCode(SendRequest(temp));
+    }
+}
\ No newline at end of file