PixArt / Mbed OS 5100_referenceCode

Reference firmware for PixArt's PAA5100 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:c8a2256e02c2, 2018-04-03 (annotated)

Committer:
PixArtVY
Date:
Tue Apr 03 20:04:39 2018 +0000
Revision:
0:c8a2256e02c2
Child:
1:782127a132a3
First revision.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
PixArtVY 0:c8a2256e02c2 1 // PAA5100JE-Q: Optical Tracking Chip reference code.
PixArtVY 0:c8a2256e02c2 2 // Version: 1.0
PixArtVY 0:c8a2256e02c2 3 // Latest Revision Date: 4 Apr. 2018
PixArtVY 0:c8a2256e02c2 4 // By PixArt Imaging Inc.
PixArtVY 0:c8a2256e02c2 5 // Primary Engineer: Vincent Yeh (PixArt USA)
PixArtVY 0:c8a2256e02c2 6
PixArtVY 0:c8a2256e02c2 7 /*
PixArtVY 0:c8a2256e02c2 8 //=======================
PixArtVY 0:c8a2256e02c2 9 //Revision History
PixArtVY 0:c8a2256e02c2 10 //=======================
PixArtVY 0:c8a2256e02c2 11 Version 1.0 -- 4 Apr. 2018
PixArtVY 0:c8a2256e02c2 12 First release.
PixArtVY 0:c8a2256e02c2 13 */
PixArtVY 0:c8a2256e02c2 14
PixArtVY 0:c8a2256e02c2 15 #include "mbed.h"
PixArtVY 0:c8a2256e02c2 16 #include "SPIcommFunctions.h"
PixArtVY 0:c8a2256e02c2 17
PixArtVY 0:c8a2256e02c2 18 int main()
PixArtVY 0:c8a2256e02c2 19 {
PixArtVY 0:c8a2256e02c2 20 pc.baud(115200); // Set baud rate to 115200. Remember to sync serial terminal baud rate to the same value.
PixArtVY 0:c8a2256e02c2 21
PixArtVY 0:c8a2256e02c2 22 spi.format(8,3); // Set SPI to 8 bits with inverted polarity and phase-shifted to second edge.
PixArtVY 0:c8a2256e02c2 23 spi.frequency(1000000); // Set frequency for SPI communication.
PixArtVY 0:c8a2256e02c2 24 cs = 1; // Initialize chip select as inactive.
PixArtVY 0:c8a2256e02c2 25
PixArtVY 0:c8a2256e02c2 26 pc.printf("Program START\n\r");
PixArtVY 0:c8a2256e02c2 27
PixArtVY 0:c8a2256e02c2 28 pc.printf("ID Check: %2X\n\r", readRegister(0x00)); //Checks product ID to make sure communication protocol is working properly.
PixArtVY 0:c8a2256e02c2 29 if(readRegister(0x00) != 0x49)
PixArtVY 0:c8a2256e02c2 30 {
PixArtVY 0:c8a2256e02c2 31 pc.printf("Communication protocol error! Terminating program.\n\r");
PixArtVY 0:c8a2256e02c2 32 return 0;
PixArtVY 0:c8a2256e02c2 33 }
PixArtVY 0:c8a2256e02c2 34
PixArtVY 0:c8a2256e02c2 35
PixArtVY 0:c8a2256e02c2 36 startupCheck();
PixArtVY 0:c8a2256e02c2 37 if(startupFail == 3)
PixArtVY 0:c8a2256e02c2 38 {
PixArtVY 0:c8a2256e02c2 39 pc.printf("Start-up failed! Power cycle the chip and try again.\n\r");
PixArtVY 0:c8a2256e02c2 40 return 0;
PixArtVY 0:c8a2256e02c2 41 }
PixArtVY 0:c8a2256e02c2 42
PixArtVY 0:c8a2256e02c2 43 initializeSensor();
PixArtVY 0:c8a2256e02c2 44
PixArtVY 0:c8a2256e02c2 45 while(1)
PixArtVY 0:c8a2256e02c2 46 {
PixArtVY 0:c8a2256e02c2 47 //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:c8a2256e02c2 48
PixArtVY 0:c8a2256e02c2 49 if(readRegister(0x02) & 0x80)
PixArtVY 0:c8a2256e02c2 50 {
PixArtVY 0:c8a2256e02c2 51 grabData();
PixArtVY 0:c8a2256e02c2 52 printData();
PixArtVY 0:c8a2256e02c2 53 }
PixArtVY 0:c8a2256e02c2 54 }
PixArtVY 0:c8a2256e02c2 55 }