Reference firmware for PixArt's PAT9125EL 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.
Welcome to the code repository for PixArt's PAT9125EL sensor and evaluation board.
For general information about this product, please visit this product's components page here:
https://os.mbed.com/components/PAT9125EL-Evaluation-Board/
For guides and tips on how to setup and evaluate the PAT9125EL sensor with the Nordic nRF52-DK microcontroller using this reference code, please visit this guide:
https://os.mbed.com/teams/PixArt/code/9125_referenceCode/wiki/Guide-for-nRF52-DK-Platform
For guides and tips on how to setup and evaluate the PAT9125EL sensor with any microcontroller using this reference code, please visit this guide:
https://os.mbed.com/teams/PixArt/code/9125_referenceCode/wiki/Guide-for-Any-Platform
main.cpp
- Committer:
- PixArtVY
- Date:
- 2018-07-23
- Revision:
- 4:8f7d8ff001f8
- Parent:
- 3:979019410df2
- Child:
- 5:577976dae20d
File content as of revision 4:8f7d8ff001f8:
// PAT9125EL: Miniature Optical Navigation Chip reference code. // Version: 1.1 // Latest Revision Date: 18 July 2018 // By PixArt Imaging Inc. // Primary Engineer: Vincent Yeh (PixArt USA) // Copyright [2018] [Vincent Yeh] // 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: // http://www.apache.org/licenses/LICENSE-2.0 /* //======================= //Revision History //======================= Version 1.2 -- 23 July 2018 -Changed SPI frequency to 2MHz. -Changed SPI timing for the readRegister function. Version 1.1 -- 18 July 2018 -Added apache license notice. Version 1.0 -- 16 Feb. 2018 -First release. */ #include "mbed.h" #include "registerArrays.h" #include "SPIcommFunctions.h" //#include "I2CcommFunctions.h" //Make sure you only have SPIcommFunctions or I2CcommFunctions enabled. You cannot include both headers. int main() { pc.baud(115200); // Set baud rate to 115200. Remember to sync serial terminal baud rate to the same value. #ifdef SPImode spi.format(8,3); // Set SPI to 8 bits with inverted polarity and phase-shifted to second edge. spi.frequency(2000000); // Set frequency for SPI communication. cs = 1; // Initialize chip select as inactive. #endif #ifdef I2Cmode i2c.frequency(400000); // Set frequency for I2C communication. #endif pc.printf("Program START\n\r"); pc.printf("ID Check: %2X\n\r", readRegister(0x00)); //Checks product ID to make sure communication protocol is working properly. if(readRegister(0x00) != 0x31) { pc.printf("Communication protocol error! Terminating program.\n\r"); return 0; } writeRegister(0x06, 0x97); //Software reset (i.e. set bit7 to 1) wait_ms(1); //Delay 1 ms for chip reset timing. writeRegister(0x06, 0x17); //Ensure software reset is done and chip is no longer in that state. load(initialize, initialize_size); //Load register settings from the "initialize" array if(readRegister(0x5E) == 0x04) //These unlisted registers are used for internal recommended settings. { writeRegister(0x5E, 0x08); if(readRegister(0x5D) == 0x10) writeRegister(0x5D, 0x19); } writeRegister(0x09, 0x00); // enable write protect. while(1) { //pc.printf("MOTION bit: %2X\n\r", (readRegister(0x02) & 0x80) >> 7); //Prints motion bit for debugging. 1 = motion detected. 0 = no motion detected. if(readRegister(0x02) & 0x80) { grabData(); printData(); } } }