Example of using the ATT M2X back end. Connect over Wifi with the ESP8266 chip. This code sends random 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 M2XStreamClient jsonlite mbed
Fork of M2X_K64F_Accel_ESP8266-wifi by
main.cpp
- Committer:
- jb8414
- Date:
- 2014-08-05
- Revision:
- 0:ece599ab76bb
- Child:
- 1:c7b9e522cc8e
File content as of revision 0:ece599ab76bb:
#include "mbed.h" #include "FXOS8700Q.h" #include "M2XStreamClient.h" #include "EthernetInterface.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 const char key[] = "<key>"; // Replace with your M2X user account master key const char feed[] = "<feed>"; // Replace with your blueprint feed ID const char stream[] = "<stream>"; // Replace with your stream name int main() { // Setup Ethernet printf("Start\r\n"); EthernetInterface eth; printf("Init...\r\n"); eth.init(); //Use DHCP //eth.init(ip,mask,gateway); //Use Static IP Configuration printf("Connect\r\n"); eth.connect(); printf("Device IP Address is %s\r\n", eth.getIPAddress()); // Initialize the M2X client Client client; M2XStreamClient m2xClient(&client, key); 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 if (maxTilt > 20) { ret = m2xClient.post(feed, stream, maxTilt); printf("send() returned %d\r\n", ret); // wait(0.5); } } }