PixArt / Mbed OS 9123_referenceCode

Reference firmware for PixArt's PMT9123 sensor and evaluation board. "Hello World" and "Library" contain the exact same files. Please import just one of the two into your mBed compiler as a new program and not as a library.

main.cpp@0:71ff24e8c21e, 2018-04-10 (annotated)

Committer:
PixArtVY
Date:
Tue Apr 10 20:17:47 2018 +0000
Revision:
0:71ff24e8c21e
Child:
1:1d99f5c9581f
First revision.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
PixArtVY 0:71ff24e8c21e 1 // PMT9123QS: Low Power Right-Angle Optical Track Sensor
PixArtVY 0:71ff24e8c21e 2 // Version: 1.0
PixArtVY 0:71ff24e8c21e 3 // Latest Revision Date: 9 Apr. 2018
PixArtVY 0:71ff24e8c21e 4 // By PixArt Imaging Inc.
PixArtVY 0:71ff24e8c21e 5 // Primary Engineer: Vincent Yeh (PixArt USA)
PixArtVY 0:71ff24e8c21e 6
PixArtVY 0:71ff24e8c21e 7 /*
PixArtVY 0:71ff24e8c21e 8 //=======================
PixArtVY 0:71ff24e8c21e 9 //Revision History
PixArtVY 0:71ff24e8c21e 10 //=======================
PixArtVY 0:71ff24e8c21e 11 Version 1.0 -- 9 Apr. 2018
PixArtVY 0:71ff24e8c21e 12 First release.
PixArtVY 0:71ff24e8c21e 13 */
PixArtVY 0:71ff24e8c21e 14
PixArtVY 0:71ff24e8c21e 15 #include "mbed.h"
PixArtVY 0:71ff24e8c21e 16 #include "registerArrays.h"
PixArtVY 0:71ff24e8c21e 17 #include "I2CcommFunctions.h"
PixArtVY 0:71ff24e8c21e 18
PixArtVY 0:71ff24e8c21e 19 int main()
PixArtVY 0:71ff24e8c21e 20 {
PixArtVY 0:71ff24e8c21e 21 pc.baud(115200); // Set baud rate to 115200. Remember to sync serial terminal baud rate to the same value.
PixArtVY 0:71ff24e8c21e 22 i2c.frequency(400000); // Set frequency for I2C communication.
PixArtVY 0:71ff24e8c21e 23 startup();
PixArtVY 0:71ff24e8c21e 24
PixArtVY 0:71ff24e8c21e 25 pc.printf("Program START\n\r");
PixArtVY 0:71ff24e8c21e 26 pc.printf("ID Check: %2X\n\r", readRegister(0x00)); //Checks product ID to make sure communication protocol is working properly.
PixArtVY 0:71ff24e8c21e 27 if(readRegister(0x00) != 0x41)
PixArtVY 0:71ff24e8c21e 28 {
PixArtVY 0:71ff24e8c21e 29 pc.printf("Communication protocol error! Terminating program.\n\r");
PixArtVY 0:71ff24e8c21e 30 return 0;
PixArtVY 0:71ff24e8c21e 31 }
PixArtVY 0:71ff24e8c21e 32
PixArtVY 0:71ff24e8c21e 33 initialize();
PixArtVY 0:71ff24e8c21e 34 load(optimize, optimize_size); //Load register settings from the "initialize" array
PixArtVY 0:71ff24e8c21e 35
PixArtVY 0:71ff24e8c21e 36 while(1)
PixArtVY 0:71ff24e8c21e 37 {
PixArtVY 0:71ff24e8c21e 38 //pc.printf("MOTION bit: %2X\n\r", (readRegister(0x02) & 0x80) >> 7); //Prints motion bit for debugging. 1 = motion detected. 0 = no motion detected.
PixArtVY 0:71ff24e8c21e 39
PixArtVY 0:71ff24e8c21e 40 if(readRegister(0x02) & 0x80)
PixArtVY 0:71ff24e8c21e 41 {
PixArtVY 0:71ff24e8c21e 42 grabData();
PixArtVY 0:71ff24e8c21e 43 printData();
PixArtVY 0:71ff24e8c21e 44 }
PixArtVY 0:71ff24e8c21e 45 }
PixArtVY 0:71ff24e8c21e 46 }