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@1:782127a132a3, 2018-07-18 (annotated)

Committer:
PixArtVY
Date:
Wed Jul 18 18:37:03 2018 +0000
Revision:
1:782127a132a3
Parent:
0:c8a2256e02c2 
Added Apache License notice.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
PixArtVY 0:c8a2256e02c2 1 // PAA5100JE-Q: Optical Tracking Chip reference code.
PixArtVY 1:782127a132a3 2 // Version: 1.1
PixArtVY 1:782127a132a3 3 // Latest Revision Date: 18 July 2018
PixArtVY 0:c8a2256e02c2 4 // By PixArt Imaging Inc.
PixArtVY 0:c8a2256e02c2 5 // Primary Engineer: Vincent Yeh (PixArt USA)
PixArtVY 0:c8a2256e02c2 6
PixArtVY 1:782127a132a3 7 // Copyright [2018] [Vincent Yeh]
PixArtVY 1:782127a132a3 8 // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at:
PixArtVY 1:782127a132a3 9 // http://www.apache.org/licenses/LICENSE-2.0
PixArtVY 1:782127a132a3 10
PixArtVY 1:782127a132a3 11
PixArtVY 0:c8a2256e02c2 12 /*
PixArtVY 0:c8a2256e02c2 13 //=======================
PixArtVY 0:c8a2256e02c2 14 //Revision History
PixArtVY 0:c8a2256e02c2 15 //=======================
PixArtVY 1:782127a132a3 16 Version 1.1 -- 18 July 2018
PixArtVY 1:782127a132a3 17 Added apache license notice.
PixArtVY 1:782127a132a3 18
PixArtVY 0:c8a2256e02c2 19 Version 1.0 -- 4 Apr. 2018
PixArtVY 0:c8a2256e02c2 20 First release.
PixArtVY 0:c8a2256e02c2 21 */
PixArtVY 0:c8a2256e02c2 22
PixArtVY 0:c8a2256e02c2 23 #include "mbed.h"
PixArtVY 0:c8a2256e02c2 24 #include "SPIcommFunctions.h"
PixArtVY 0:c8a2256e02c2 25
PixArtVY 0:c8a2256e02c2 26 int main()
PixArtVY 0:c8a2256e02c2 27 {
PixArtVY 0:c8a2256e02c2 28 pc.baud(115200); // Set baud rate to 115200. Remember to sync serial terminal baud rate to the same value.
PixArtVY 0:c8a2256e02c2 29
PixArtVY 0:c8a2256e02c2 30 spi.format(8,3); // Set SPI to 8 bits with inverted polarity and phase-shifted to second edge.
PixArtVY 0:c8a2256e02c2 31 spi.frequency(1000000); // Set frequency for SPI communication.
PixArtVY 0:c8a2256e02c2 32 cs = 1; // Initialize chip select as inactive.
PixArtVY 0:c8a2256e02c2 33
PixArtVY 0:c8a2256e02c2 34 pc.printf("Program START\n\r");
PixArtVY 0:c8a2256e02c2 35
PixArtVY 0:c8a2256e02c2 36 pc.printf("ID Check: %2X\n\r", readRegister(0x00)); //Checks product ID to make sure communication protocol is working properly.
PixArtVY 0:c8a2256e02c2 37 if(readRegister(0x00) != 0x49)
PixArtVY 0:c8a2256e02c2 38 {
PixArtVY 0:c8a2256e02c2 39 pc.printf("Communication protocol error! Terminating program.\n\r");
PixArtVY 0:c8a2256e02c2 40 return 0;
PixArtVY 0:c8a2256e02c2 41 }
PixArtVY 0:c8a2256e02c2 42
PixArtVY 0:c8a2256e02c2 43
PixArtVY 0:c8a2256e02c2 44 startupCheck();
PixArtVY 0:c8a2256e02c2 45 if(startupFail == 3)
PixArtVY 0:c8a2256e02c2 46 {
PixArtVY 0:c8a2256e02c2 47 pc.printf("Start-up failed! Power cycle the chip and try again.\n\r");
PixArtVY 0:c8a2256e02c2 48 return 0;
PixArtVY 0:c8a2256e02c2 49 }
PixArtVY 0:c8a2256e02c2 50
PixArtVY 0:c8a2256e02c2 51 initializeSensor();
PixArtVY 0:c8a2256e02c2 52
PixArtVY 0:c8a2256e02c2 53 while(1)
PixArtVY 0:c8a2256e02c2 54 {
PixArtVY 0:c8a2256e02c2 55 //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 56
PixArtVY 0:c8a2256e02c2 57 if(readRegister(0x02) & 0x80)
PixArtVY 0:c8a2256e02c2 58 {
PixArtVY 0:c8a2256e02c2 59 grabData();
PixArtVY 0:c8a2256e02c2 60 printData();
PixArtVY 0:c8a2256e02c2 61 }
PixArtVY 0:c8a2256e02c2 62 }
PixArtVY 0:c8a2256e02c2 63 }