Hexiwear / Mbed OS Hexi_Pressure_Baro_Temp_Example

Barometric pressure and temperature sensing program example for Hexiwear

Dependencies:   MPL3115A2

Fork of Hexi_barom_alt_temp_app by Mac Lobdell

This project demonstrates the use of the MPL3115A2 pressure and temperature sensor embedded in hexiwear

Open a Hyperterminal tool on your computer and connect it to the "mbed Serial port (COMxx)" with Baud rate "9600bps"

Compile the project and copy the binary "Hexi_Pressure_Baro_Temp_Example_HEXIWEAR.bin" in the DAP-LINK drive from your computer file explorer Press the K64F-RESET button on the docking station to start the program on your board

Message "Begin Data Acquisition from MPL3115A2 sensor..." will appear in the Hyperterminal window
Then every 500ms the value of the pressure and the temperature will be displayed in the Hyperterminal window and the LED will blink Green

main.cpp@0:97dd02e37c94, 2016-08-13 (annotated)

Committer:
maclobdell
Date:
Sat Aug 13 16:02:39 2016 +0000
Revision:
0:97dd02e37c94
Child:
1:4cd4a1bd710b
initial simple example that prints to terminal

Who changed what in which revision?

UserRevisionLine numberNew contents of line
maclobdell 0:97dd02e37c94 1 #include "mbed.h"
maclobdell 0:97dd02e37c94 2 #include "MPL3115A2.h"
maclobdell 0:97dd02e37c94 3
maclobdell 0:97dd02e37c94 4 /* Check out the full featured example application for interfacing to the
maclobdell 0:97dd02e37c94 5 * Barometer/Altimeter/Thermometer device at the following URL
maclobdell 0:97dd02e37c94 6 * https://developer.mbed.org/users/clemente/code/WIGO_MPL3115A2/
maclobdell 0:97dd02e37c94 7 */
maclobdell 0:97dd02e37c94 8
maclobdell 0:97dd02e37c94 9 #define MPL3115A2_I2C_ADDRESS (0x60<<1)
maclobdell 0:97dd02e37c94 10
maclobdell 0:97dd02e37c94 11 DigitalOut led1(LED1);
maclobdell 0:97dd02e37c94 12
maclobdell 0:97dd02e37c94 13 // Pin connections for Hexiwear
maclobdell 0:97dd02e37c94 14 MPL3115A2 MPL3115A2( PTC11, PTC10, MPL3115A2_I2C_ADDRESS);
maclobdell 0:97dd02e37c94 15 /* pos [0] = altimeter or pressure value */
maclobdell 0:97dd02e37c94 16 /* pos [1] = temperature value */
maclobdell 0:97dd02e37c94 17 float sensor_data[2];
maclobdell 0:97dd02e37c94 18
maclobdell 0:97dd02e37c94 19 // main() runs in its own thread in the OS
maclobdell 0:97dd02e37c94 20 // (note the calls to Thread::wait below for delays)
maclobdell 0:97dd02e37c94 21 int main() {
maclobdell 0:97dd02e37c94 22
maclobdell 0:97dd02e37c94 23
maclobdell 0:97dd02e37c94 24 // Set over sampling value (see MPL3115A2.h for details)
maclobdell 0:97dd02e37c94 25 MPL3115A2.Oversample_Ratio( OVERSAMPLE_RATIO_64);
maclobdell 0:97dd02e37c94 26 // Configure the sensor as Barometer.
maclobdell 0:97dd02e37c94 27 MPL3115A2.Barometric_Mode();
maclobdell 0:97dd02e37c94 28
maclobdell 0:97dd02e37c94 29 while (true) {
maclobdell 0:97dd02e37c94 30
maclobdell 0:97dd02e37c94 31 MPL3115A2.getAllData( &sensor_data[0]);
maclobdell 0:97dd02e37c94 32 printf("\tPressure: %f\tTemperature: %f\r\n", sensor_data[0], sensor_data[1]);
maclobdell 0:97dd02e37c94 33 led1 = !led1;
maclobdell 0:97dd02e37c94 34 Thread::wait(500);
maclobdell 0:97dd02e37c94 35 }
maclobdell 0:97dd02e37c94 36 }
maclobdell 0:97dd02e37c94 37