main.cpp

00001 // PAT9130EW: Optical Tracking Miniature Chip reference code.
00002 // Version: 1.1
00003 // Latest Revision Date: 18 July 2018
00004 // By PixArt Imaging Inc.
00005 // Primary Engineer: Vincent Yeh (PixArt USA)
00006 
00007 // Copyright [2018] [Vincent Yeh]
00008 // 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:
00009 // http://www.apache.org/licenses/LICENSE-2.0
00010 
00011 
00012 /*
00013 //=======================
00014 //Revision History
00015 //=======================
00016 Version 1.1 -- 18 July 2018
00017 Added apache license notice.
00018 
00019 Version 1.0 -- 16 Apr. 2018
00020 First release.
00021 */
00022 
00023 #include "mbed.h"
00024 #include "registerArrays.h"
00025 #include "SPIcommFunctions.h"
00026 
00027 int main()
00028 {
00029     pc.baud(115200);                    // Set baud rate to 115200. Remember to sync serial terminal baud rate to the same value.
00030 
00031     spi.format(8,3);                    // Set SPI to 8 bits with inverted polarity and phase-shifted to second edge.
00032     spi.frequency(1000000);             // Set frequency for SPI communication.
00033     cs = 1;                             // Initialize chip select as inactive.
00034     
00035     pc.printf("Program START\n\r");
00036     
00037     pc.printf("ID Check: %2X\n\r", readRegister(0x00)); //Checks product ID to make sure communication protocol is working properly.
00038     if(readRegister(0x00) != 0x31)
00039     {
00040         pc.printf("Communication protocol error! Terminating program.\n\r");
00041         return 0;
00042     }
00043     
00044     writeRegister(0x06, 0x80);          //Software reset (i.e. set bit7 to 1)
00045     wait_ms(1);                         //Delay 1 ms for chip reset timing.
00046     
00047     pc.printf("ID Check #2: %2X\n\r", readRegister(0x00)); //Checks product ID after resetting to make sure communication protocol is working properly.
00048     if(readRegister(0x00) != 0x31)
00049     {
00050         pc.printf("Communication protocol error! Terminating program.\n\r");
00051         return 0;
00052     }
00053     
00054     load(initialize, initialize_size);  //Load register settings from the "initialize" array (see registerArrays.h)
00055     
00056     while(1)
00057     {
00058         //pc.printf("MOTION bit: %2X\n\r", (readRegister(0x02) & 0x80) >> 7);   //Prints motion bit for debugging. 1 = motion detected. 0 = no motion detected.
00059         
00060         if(readRegister(0x02) & 0x80)
00061         {
00062             grabData();
00063             printData();
00064         }
00065     }
00066 }