![](/media/cache/group/default_image.jpg.50x50_q85.jpg)
LP Long Distance IR Vision Robot
Dependencies: max77650_charger_sample BufferedSerial SX1276GenericLib Adafruit-MotorShield NEO-6m-GPS MAX17055_EZconfig Adafruit_GFX USBDeviceHT Adafruit-PWM-Servo-Driver
GridEye/GridEye.cpp
- Committer:
- dev_alexander
- Date:
- 2018-08-01
- Revision:
- 38:c10d2a04a0c2
- Parent:
- 28:0ed92c590607
File content as of revision 38:c10d2a04a0c2:
/********************************************************************** * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Maxim Integrated * Products, Inc. shall not be used except as stated in the Maxim Integrated * Products, Inc. Branding Policy. * * The mere transfer of this software does not imply any licenses * of trade secrets, proprietary technology, copyrights, patents, * trademarks, maskwork rights, or any other form of intellectual * property whatsoever. Maxim Integrated Products, Inc. retains all * ownership rights. **********************************************************************/ #include "GridEye/GridEye.h" GridEye::GridEye(I2C &i2c) : m_i2cBus(i2c) { //Perform a software reset upon power on. softwareReset(); } //********************************************************************* int8_t GridEye::gridEyeReadReg(GridEyeRegister reg_addr, int num_bytes, char * data_buf) { int8_t result; char read_pointer[1]; read_pointer[0] = reg_addr; result = GridEye::m_i2cBus.write(I2C_W_ADRS_GRIDEYE, read_pointer, 1); if (result == I2C_WR_SUCCESS) { result = GridEye::m_i2cBus.read(I2C_R_ADRS_GRIDEYE, data_buf , num_bytes, false); if (result == I2C_WR_SUCCESS) return result; } return I2C_WR_ERROR; } //********************************************************************* int8_t GridEye::gridEyeWriteReg(GridEyeRegister reg_addr, int num_bytes, char * data_buf) { int8_t result; int num_indices = num_bytes + 1; char write_buffer[num_indices]; //construct write buffer with the address followed by the data to be written write_buffer[0] = reg_addr; for (int idx=0; idx<num_bytes; idx++) write_buffer[idx+1] = data_buf[idx]; result = GridEye::m_i2cBus.write(I2C_W_ADRS_GRIDEYE, write_buffer, num_indices); if (result == I2C_WR_SUCCESS) return result; //else, return -1 return I2C_WR_ERROR; } //********************************************************************* int8_t GridEye::getThermistorTemperature(int16_t & therm_temp) { int8_t result; char data[2]; result = this->gridEyeReadReg(GridEye::THERMISTOR_LOW, 2, data); if(result == I2C_WR_SUCCESS) { convSingleRawTempData2Int(data, therm_temp); return therm_temp; } return I2C_WR_ERROR; } //********************************************************************* int8_t GridEye::getPixelTemperature(uint8_t pixel_addr, int16_t & pixel_temp) { int8_t result; char data[2]; result = this->gridEyeReadReg((GridEyeRegister) pixel_addr, 2, data); if(result == I2C_WR_SUCCESS) { convSingleRawTempData2Int(data, pixel_temp); return pixel_temp; } return I2C_WR_ERROR; } //********************************************************************* int8_t GridEye::getRaw8x8FrameData(char * raw_frame_data) { int8_t result; result = gridEyeReadReg((GridEyeRegister) GridEye::PIXEL_BASE_ADRS, 128, raw_frame_data); return result; } //********************************************************************* int8_t GridEye::softwareReset() { int8_t result; char initial_reset[1]; //This value when programmed to the Grid Eye's RESET reg will perform initial reset on device initial_reset[0] = 0x3F; result = this->gridEyeWriteReg(GridEye::RESET, 1, initial_reset); if (result == I2C_WR_SUCCESS) return result; return I2C_WR_ERROR; } //********************************************************************* int8_t GridEye::setOperatingMode(GridEye::OperatingMode mode) { int8_t result; char set_mode[1]; set_mode[0] = (char)mode; result = this->gridEyeWriteReg(GridEye::OPERATING_MODE, 1, set_mode); if (result == I2C_WR_SUCCESS) return result; return I2C_WR_ERROR; } //********************************************************************* int8_t GridEye::setFrameRate(GridEye::FrameRate rate) { int8_t result; char set_rate[1]; set_rate[0] = (char)rate; result = this->gridEyeWriteReg(GridEye::FRAME_RATE, 1, set_rate); if (result == I2C_WR_SUCCESS) return result; return I2C_WR_ERROR; } //********************************************************************* void convSingleRawTempData2Int(char * data, int16_t & pixel_temp) { int8_t upper_byte = data[1]; int8_t lower_byte = data[0]; int16_t upper_byte_mask = 0x0F00; //int16_t sign_bit = 0x0400; int16_t sign_bit = 0x0200; int16_t finish_neg_val = 0xFC00; int16_t pixel; //construct the pixel based off the 12 bit signed data pixel = (upper_byte << 8); pixel &= upper_byte_mask; pixel |= lower_byte; //shift it over to gain integer value of the pixel pixel = pixel >> 2; //if negative, properly convert to 16 bit int format to represent 2's compliment if (pixel&sign_bit) pixel |= finish_neg_val; //set the coresponding pixel to be in the passed in array pixel_temp = pixel; } //********************************************************************* void convRaw8x8Data2Int(char * data, int16_t * frame_temp) { int idx = 0; int8_t upper_byte; int8_t lower_byte; int16_t upper_byte_mask = 0x0F00; //int16_t sign_bit = 0x0400; int16_t sign_bit = 0x0200; int16_t finish_neg_val = 0xFC00; int16_t pixel; for (idx=0; idx<64; idx++) { //construct the pixel based off the 12 bit signed data upper_byte = data[idx*2+1]; lower_byte = data[idx*2+0]; pixel = (upper_byte << 8); pixel &= upper_byte_mask; pixel |= lower_byte; //shift it over to gain integer value of the pixel pixel = pixel >> 2; //if negative, properly convert to 16 bit int format to represent 2's compliment if (pixel&sign_bit) pixel |= finish_neg_val; //set the coresponding pixel to be in the passed in array frame_temp[idx] = pixel; } } //********************************************************************* void convRaw8x8Data2Point25degC(char * data, int16_t * frame_temp) { int idx = 0; int8_t upper_byte; int8_t lower_byte; int16_t upper_byte_mask = 0x0F00; //int16_t sign_bit = 0x1000; int16_t sign_bit = 0x0800; int16_t finish_neg_val = 0xF000; int16_t pixel; for (idx=0; idx<64; idx++) { //construct the pixel based off the 12 bit signed data upper_byte = data[idx*2+1]; lower_byte = data[idx*2+0]; pixel = (upper_byte << 8); //pixel &= upper_byte_mask; pixel |= lower_byte; //no shift needed since we would lose the two lsb that give 0.25*C precision //if negative, properly convert to 16 bit int format to represent 2's compliment if (pixel & sign_bit) pixel |= finish_neg_val; else pixel &= 0x0FFF; //set the coresponding pixel to be in the passed in array frame_temp[idx] = pixel; } }