Example of using the ATT M2X back end. Connect over Wifi with the ESP8266 chip. This code sends accelerometer data to M2X. This code can be used for Any board, just change the RX/TX pins the wifi adapter is connected to.
Dependencies: ESP8266Interface FXOS8700Q M2XStreamClient jsonlite mbed
Fork of M2X_Nucleo411_Accel_ESP8266-wifi by
main.cpp
- Committer:
- mbedAustin
- Date:
- 2015-12-11
- Revision:
- 3:694a1a67b156
- Parent:
- 2:68b759c89fd9
- Child:
- 4:3c1d712dcc48
File content as of revision 3:694a1a67b156:
#include "mbed.h" #include "FXOS8700Q.h" #include "M2XStreamClient.h" #include "ESP8266Interface.h" #include "TCPSocketConnection.h" #ifndef MAX #define max(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a > _b ? _a : _b; }) #endif #ifndef MIN #define min(a,b) ({ __typeof__ (a) _a = (a); __typeof__ (b) _b = (b); _a < _b ? _a : _b; }) #endif char deviceId[] = "<device id>"; // Device you want to push to char streamName[] = "<stream name>"; // Stream you want to push to char m2xKey[] = "<m2x api key>"; // Your M2X API Key or Master API Key /* * ESP8266 Wifi Config */ ESP8266Interface wifi(D8,D2,D3,"wifi-name","wifi-password",115200); // TX,RX,Reset,SSID,Password,Baud int main() { printf("Starting...\r\n"); // connect to wifi wifi.init(); //Reset wifi.connect(); //Use DHCP printf("IP Address is %s \n\r", wifi.getIPAddress()); // Initialize the M2X client Client client; M2XStreamClient m2xClient(&client, m2xKey,1,"52.22.150.98"); int ret; // Create an accelerometer instance FXOS8700Q_acc acc( PTE25, PTE24, FXOS8700CQ_SLAVE_ADDR1); // Proper Ports and I2C Address for K64F Freedom board acc.enable(); printf("\r\n\nFXOS8700Q Who Am I= %X\r\n", acc.whoAmI()); while (true) { float x, y, z; acc.getX(&x); acc.getY(&y); acc.getZ(&z); printf("Accel X: %1.2f, Y: %1.2f, Z: %1.2f\n\r", x, y, z); // Calculate pitch and roll. Find the maximum tilt angle. float pitch = atan(x / sqrt(y * y + z * z)); float roll = atan(y / sqrt(x * x + z * z)); float maxTilt = max(abs(roll), abs(pitch)) * 180.0 / 3.14159; printf("pitch: %5.1f roll: %5.1f maxTilt: %5.1f\n\r", pitch, roll, maxTilt); // If the maximum title is over 20 degrees, then send // data to stream ret = m2xClient.updateStreamValue(deviceId, streamName, maxTilt); printf("send() returned %d\r\n", ret); wait(1.0); } }