Jiajun Zhang / Mbed OS Accelerometer

Part 2 lab 4

Dependencies:   MMA8451Q

Fork of Accelerometer_example by William Marsh

main.cpp@0:a1caba5c4e48, 2017-02-08 (annotated)

Committer:
WilliamMarshQMUL
Date:
Wed Feb 08 19:25:08 2017 +0000
Revision:
0:a1caba5c4e48
Child:
2:304358fa24aa
First version for lab 4

Who changed what in which revision?

UserRevisionLine numberNew contents of line
WilliamMarshQMUL 0:a1caba5c4e48 1 #include "mbed.h"
WilliamMarshQMUL 0:a1caba5c4e48 2 #include "rtos.h"
WilliamMarshQMUL 0:a1caba5c4e48 3 #include "MMA8451Q.h"
WilliamMarshQMUL 0:a1caba5c4e48 4
WilliamMarshQMUL 0:a1caba5c4e48 5 PinName const SDA = PTE25;
WilliamMarshQMUL 0:a1caba5c4e48 6 PinName const SCL = PTE24;
WilliamMarshQMUL 0:a1caba5c4e48 7
WilliamMarshQMUL 0:a1caba5c4e48 8 #define MMA8451_I2C_ADDRESS (0x1d<<1)
WilliamMarshQMUL 0:a1caba5c4e48 9
WilliamMarshQMUL 0:a1caba5c4e48 10 int main(void)
WilliamMarshQMUL 0:a1caba5c4e48 11 {
WilliamMarshQMUL 0:a1caba5c4e48 12 MMA8451Q acc(SDA, SCL, MMA8451_I2C_ADDRESS);
WilliamMarshQMUL 0:a1caba5c4e48 13 PwmOut rled(LED1);
WilliamMarshQMUL 0:a1caba5c4e48 14 PwmOut gled(LED2);
WilliamMarshQMUL 0:a1caba5c4e48 15 PwmOut bled(LED3);
WilliamMarshQMUL 0:a1caba5c4e48 16 Serial pc(USBTX, USBRX); // tx, rx
WilliamMarshQMUL 0:a1caba5c4e48 17
WilliamMarshQMUL 0:a1caba5c4e48 18
WilliamMarshQMUL 0:a1caba5c4e48 19 pc.printf("MMA8451 ID: %d\n", acc.getWhoAmI());
WilliamMarshQMUL 0:a1caba5c4e48 20
WilliamMarshQMUL 0:a1caba5c4e48 21 while (true) {
WilliamMarshQMUL 0:a1caba5c4e48 22 float x, y, z;
WilliamMarshQMUL 0:a1caba5c4e48 23 x = acc.getAccX();
WilliamMarshQMUL 0:a1caba5c4e48 24 y = acc.getAccY();
WilliamMarshQMUL 0:a1caba5c4e48 25 z = acc.getAccZ();
WilliamMarshQMUL 0:a1caba5c4e48 26 rled = 1.0f - abs(x);
WilliamMarshQMUL 0:a1caba5c4e48 27 gled = 1.0f - abs(y);
WilliamMarshQMUL 0:a1caba5c4e48 28 bled = 1.0f - abs(z);
WilliamMarshQMUL 0:a1caba5c4e48 29 Thread::wait(300);
WilliamMarshQMUL 0:a1caba5c4e48 30 pc.printf("X: %1.2f, Y: %1.2f, Z: %1.2f\n", x, y, z);
WilliamMarshQMUL 0:a1caba5c4e48 31 }
WilliamMarshQMUL 0:a1caba5c4e48 32 }