hisyam fs / Mbed 2 deprecated Test_all

tes ir atas semua

Dependencies:   mbed ADS1115 StepperMotor SRF05 TPA81new

AMG8833/AMG8833.cpp@49:d23d76689933, 2019-03-06 (annotated)

Committer:
hisyamfs
Date:
Wed Mar 06 13:17:10 2019 +0000
Revision:
49:d23d76689933
Parent:
42:3b682b7d0388 
tes bisa semua, tanpa servo. uvtron nggak bisa

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hisyamfs 42:3b682b7d0388 1 #include "AMG8833.h"
hisyamfs 42:3b682b7d0388 2
hisyamfs 42:3b682b7d0388 3 //#define I2C_DEBUG
hisyamfs 42:3b682b7d0388 4
hisyamfs 42:3b682b7d0388 5 /**************************************************************************/
hisyamfs 42:3b682b7d0388 6 /*!
hisyamfs 42:3b682b7d0388 7 @brief Setups the I2C interface and hardware
hisyamfs 42:3b682b7d0388 8 @param addr Optional I2C address the sensor can be found on. Default is 0x69
hisyamfs 42:3b682b7d0388 9 @returns True if device is set up, false on any failure
hisyamfs 42:3b682b7d0388 10 */
hisyamfs 42:3b682b7d0388 11 /**************************************************************************/
hisyamfs 42:3b682b7d0388 12 Adafruit_AMG88xx::Adafruit_AMG88xx(PinName mysda, PinName myscl) : _i2c(mysda, myscl)
hisyamfs 42:3b682b7d0388 13 {
hisyamfs 42:3b682b7d0388 14
hisyamfs 42:3b682b7d0388 15 }
hisyamfs 42:3b682b7d0388 16
hisyamfs 42:3b682b7d0388 17 int Adafruit_AMG88xx::begin(char addr)
hisyamfs 42:3b682b7d0388 18 {
hisyamfs 42:3b682b7d0388 19 _i2caddr = addr;
hisyamfs 42:3b682b7d0388 20
hisyamfs 42:3b682b7d0388 21 //enter normal mode
hisyamfs 42:3b682b7d0388 22 _pctl.PCTL = AMG88xx_NORMAL_MODE;
hisyamfs 42:3b682b7d0388 23 write8(AMG88xx_PCTL, _pctl.get());
hisyamfs 42:3b682b7d0388 24
hisyamfs 42:3b682b7d0388 25 //software reset
hisyamfs 42:3b682b7d0388 26 _rst.RST = AMG88xx_INITIAL_RESET;
hisyamfs 42:3b682b7d0388 27 write8(AMG88xx_RST, _rst.get());
hisyamfs 42:3b682b7d0388 28
hisyamfs 42:3b682b7d0388 29 //disable interrupts by default
hisyamfs 42:3b682b7d0388 30 disableInterrupt();
hisyamfs 42:3b682b7d0388 31
hisyamfs 42:3b682b7d0388 32 //set to 10 FPS
hisyamfs 42:3b682b7d0388 33 _fpsc.FPS = AMG88xx_FPS_10;
hisyamfs 42:3b682b7d0388 34 write8(AMG88xx_FPSC, _fpsc.get());
hisyamfs 42:3b682b7d0388 35
hisyamfs 42:3b682b7d0388 36 wait_ms(100);
hisyamfs 42:3b682b7d0388 37
hisyamfs 42:3b682b7d0388 38 return 1;
hisyamfs 42:3b682b7d0388 39 }
hisyamfs 42:3b682b7d0388 40
hisyamfs 42:3b682b7d0388 41 /**************************************************************************/
hisyamfs 42:3b682b7d0388 42 /*!
hisyamfs 42:3b682b7d0388 43 @brief Set the moving average mode.
hisyamfs 42:3b682b7d0388 44 @param mode if True is passed, output will be twice the moving average
hisyamfs 42:3b682b7d0388 45 */
hisyamfs 42:3b682b7d0388 46 /**************************************************************************/
hisyamfs 42:3b682b7d0388 47 void Adafruit_AMG88xx::setMovingAverageMode(int mode)
hisyamfs 42:3b682b7d0388 48 {
hisyamfs 42:3b682b7d0388 49 _ave.MAMOD = mode;
hisyamfs 42:3b682b7d0388 50 write8(AMG88xx_AVE, _ave.get());
hisyamfs 42:3b682b7d0388 51 }
hisyamfs 42:3b682b7d0388 52
hisyamfs 42:3b682b7d0388 53 /**************************************************************************/
hisyamfs 42:3b682b7d0388 54 /*!
hisyamfs 42:3b682b7d0388 55 @brief Set the interrupt levels. The hysteresis value defaults to .95 * high
hisyamfs 42:3b682b7d0388 56 @param high the value above which an interrupt will be triggered
hisyamfs 42:3b682b7d0388 57 @param low the value below which an interrupt will be triggered
hisyamfs 42:3b682b7d0388 58 */
hisyamfs 42:3b682b7d0388 59 /**************************************************************************/
hisyamfs 42:3b682b7d0388 60 void Adafruit_AMG88xx::setInterruptLevels(float high, float low)
hisyamfs 42:3b682b7d0388 61 {
hisyamfs 42:3b682b7d0388 62 setInterruptLevels(high, low, high * .95);
hisyamfs 42:3b682b7d0388 63 }
hisyamfs 42:3b682b7d0388 64
hisyamfs 42:3b682b7d0388 65 /**************************************************************************/
hisyamfs 42:3b682b7d0388 66 /*!
hisyamfs 42:3b682b7d0388 67 @brief Set the interrupt levels
hisyamfs 42:3b682b7d0388 68 @param high the value above which an interrupt will be triggered
hisyamfs 42:3b682b7d0388 69 @param low the value below which an interrupt will be triggered
hisyamfs 42:3b682b7d0388 70 @param hysteresis the hysteresis value for interrupt detection
hisyamfs 42:3b682b7d0388 71 */
hisyamfs 42:3b682b7d0388 72 /**************************************************************************/
hisyamfs 42:3b682b7d0388 73 void Adafruit_AMG88xx::setInterruptLevels(float high, float low, float hysteresis)
hisyamfs 42:3b682b7d0388 74 {
hisyamfs 42:3b682b7d0388 75 int highConv = high / AMG88xx_PIXEL_TEMP_CONVERSION;
hisyamfs 42:3b682b7d0388 76 highConv = constrain(highConv, -4095, 4095);
hisyamfs 42:3b682b7d0388 77 _inthl.INT_LVL_H = highConv & 0xFF;
hisyamfs 42:3b682b7d0388 78 _inthh.INT_LVL_H = (highConv & 0xF) >> 4;
hisyamfs 42:3b682b7d0388 79 this->write8(AMG88xx_INTHL, _inthl.get());
hisyamfs 42:3b682b7d0388 80 this->write8(AMG88xx_INTHH, _inthh.get());
hisyamfs 42:3b682b7d0388 81
hisyamfs 42:3b682b7d0388 82 int lowConv = low / AMG88xx_PIXEL_TEMP_CONVERSION;
hisyamfs 42:3b682b7d0388 83 lowConv = constrain(lowConv, -4095, 4095);
hisyamfs 42:3b682b7d0388 84 _intll.INT_LVL_L = lowConv & 0xFF;
hisyamfs 42:3b682b7d0388 85 _intlh.INT_LVL_L = (lowConv & 0xF) >> 4;
hisyamfs 42:3b682b7d0388 86 this->write8(AMG88xx_INTLL, _intll.get());
hisyamfs 42:3b682b7d0388 87 this->write8(AMG88xx_INTLH, _intlh.get());
hisyamfs 42:3b682b7d0388 88
hisyamfs 42:3b682b7d0388 89 int hysConv = hysteresis / AMG88xx_PIXEL_TEMP_CONVERSION;
hisyamfs 42:3b682b7d0388 90 hysConv = constrain(hysConv, -4095, 4095);
hisyamfs 42:3b682b7d0388 91 _ihysl.INT_HYS = hysConv & 0xFF;
hisyamfs 42:3b682b7d0388 92 _ihysh.INT_HYS = (hysConv & 0xF) >> 4;
hisyamfs 42:3b682b7d0388 93 this->write8(AMG88xx_IHYSL, _ihysl.get());
hisyamfs 42:3b682b7d0388 94 this->write8(AMG88xx_IHYSH, _ihysh.get());
hisyamfs 42:3b682b7d0388 95 }
hisyamfs 42:3b682b7d0388 96
hisyamfs 42:3b682b7d0388 97 /**************************************************************************/
hisyamfs 42:3b682b7d0388 98 /*!
hisyamfs 42:3b682b7d0388 99 @brief enable the interrupt pin on the device.
hisyamfs 42:3b682b7d0388 100 */
hisyamfs 42:3b682b7d0388 101 /**************************************************************************/
hisyamfs 42:3b682b7d0388 102 void Adafruit_AMG88xx::enableInterrupt()
hisyamfs 42:3b682b7d0388 103 {
hisyamfs 42:3b682b7d0388 104 _intc.INTEN = 1;
hisyamfs 42:3b682b7d0388 105 this->write8(AMG88xx_INTC, _intc.get());
hisyamfs 42:3b682b7d0388 106 }
hisyamfs 42:3b682b7d0388 107
hisyamfs 42:3b682b7d0388 108 /**************************************************************************/
hisyamfs 42:3b682b7d0388 109 /*!
hisyamfs 42:3b682b7d0388 110 @brief disable the interrupt pin on the device
hisyamfs 42:3b682b7d0388 111 */
hisyamfs 42:3b682b7d0388 112 /**************************************************************************/
hisyamfs 42:3b682b7d0388 113 void Adafruit_AMG88xx::disableInterrupt()
hisyamfs 42:3b682b7d0388 114 {
hisyamfs 42:3b682b7d0388 115 _intc.INTEN = 0;
hisyamfs 42:3b682b7d0388 116 this->write8(AMG88xx_INTC, _intc.get());
hisyamfs 42:3b682b7d0388 117 }
hisyamfs 42:3b682b7d0388 118
hisyamfs 42:3b682b7d0388 119 /**************************************************************************/
hisyamfs 42:3b682b7d0388 120 /*!
hisyamfs 42:3b682b7d0388 121 @brief Set the interrupt to either absolute value or difference mode
hisyamfs 42:3b682b7d0388 122 @param mode passing AMG88xx_DIFFERENCE sets the device to difference mode, AMG88xx_ABSOLUTE_VALUE sets to absolute value mode.
hisyamfs 42:3b682b7d0388 123 */
hisyamfs 42:3b682b7d0388 124 /**************************************************************************/
hisyamfs 42:3b682b7d0388 125 void Adafruit_AMG88xx::setInterruptMode(uint8_t mode)
hisyamfs 42:3b682b7d0388 126 {
hisyamfs 42:3b682b7d0388 127 _intc.INTMOD = mode;
hisyamfs 42:3b682b7d0388 128 this->write8(AMG88xx_INTC, _intc.get());
hisyamfs 42:3b682b7d0388 129 }
hisyamfs 42:3b682b7d0388 130
hisyamfs 42:3b682b7d0388 131 /**************************************************************************/
hisyamfs 42:3b682b7d0388 132 /*!
hisyamfs 42:3b682b7d0388 133 @brief Read the state of the triggered interrupts on the device. The full interrupt register is 8 chars in length.
hisyamfs 42:3b682b7d0388 134 @param buf the pointer to where the returned data will be stored
hisyamfs 42:3b682b7d0388 135 @param size Optional number of chars to read. Default is 8 chars.
hisyamfs 42:3b682b7d0388 136 @returns up to 8 chars of data in buf
hisyamfs 42:3b682b7d0388 137 */
hisyamfs 42:3b682b7d0388 138 /**************************************************************************/
hisyamfs 42:3b682b7d0388 139 void Adafruit_AMG88xx::getInterrupt(uint8_t *buf, uint8_t size)
hisyamfs 42:3b682b7d0388 140 {
hisyamfs 42:3b682b7d0388 141 uint8_t charsToRead = min(size, (uint8_t)8);
hisyamfs 42:3b682b7d0388 142
hisyamfs 42:3b682b7d0388 143 this->read(AMG88xx_INT_OFFSET, buf, charsToRead);
hisyamfs 42:3b682b7d0388 144 }
hisyamfs 42:3b682b7d0388 145
hisyamfs 42:3b682b7d0388 146 /**************************************************************************/
hisyamfs 42:3b682b7d0388 147 /*!
hisyamfs 42:3b682b7d0388 148 @brief Clear any triggered interrupts
hisyamfs 42:3b682b7d0388 149 */
hisyamfs 42:3b682b7d0388 150 /**************************************************************************/
hisyamfs 42:3b682b7d0388 151 void Adafruit_AMG88xx::clearInterrupt()
hisyamfs 42:3b682b7d0388 152 {
hisyamfs 42:3b682b7d0388 153 _rst.RST = AMG88xx_FLAG_RESET;
hisyamfs 42:3b682b7d0388 154 write8(AMG88xx_RST, _rst.get());
hisyamfs 42:3b682b7d0388 155 }
hisyamfs 42:3b682b7d0388 156
hisyamfs 42:3b682b7d0388 157 /**************************************************************************/
hisyamfs 42:3b682b7d0388 158 /*!
hisyamfs 42:3b682b7d0388 159 @brief read the onboard thermistor
hisyamfs 42:3b682b7d0388 160 @returns a the floating point temperature in degrees Celsius
hisyamfs 42:3b682b7d0388 161 */
hisyamfs 42:3b682b7d0388 162 /**************************************************************************/
hisyamfs 42:3b682b7d0388 163 float Adafruit_AMG88xx::readThermistor()
hisyamfs 42:3b682b7d0388 164 {
hisyamfs 42:3b682b7d0388 165 uint8_t raw[2];
hisyamfs 42:3b682b7d0388 166 this->read(AMG88xx_TTHL, raw, 2);
hisyamfs 42:3b682b7d0388 167 uint16_t recast = ((uint16_t) raw[1] << 8) | ((uint16_t) raw[0]);
hisyamfs 42:3b682b7d0388 168
hisyamfs 42:3b682b7d0388 169 return signedMag12ToFloat(recast) * AMG88xx_THERMISTOR_CONVERSION;
hisyamfs 42:3b682b7d0388 170 }
hisyamfs 42:3b682b7d0388 171
hisyamfs 42:3b682b7d0388 172 /**************************************************************************/
hisyamfs 42:3b682b7d0388 173 /*!
hisyamfs 42:3b682b7d0388 174 @brief Read Infrared sensor values
hisyamfs 42:3b682b7d0388 175 @param buf the array to place the pixels in
hisyamfs 42:3b682b7d0388 176 @param size Optionsl number of chars to read (up to 64). Default is 64 chars.
hisyamfs 42:3b682b7d0388 177 @return up to 64 chars of pixel data in buf
hisyamfs 42:3b682b7d0388 178 */
hisyamfs 42:3b682b7d0388 179 /**************************************************************************/
hisyamfs 42:3b682b7d0388 180 void Adafruit_AMG88xx::readPixels(float *buf, uint8_t size)
hisyamfs 42:3b682b7d0388 181 {
hisyamfs 42:3b682b7d0388 182 uint16_t recast;
hisyamfs 42:3b682b7d0388 183 float converted;
hisyamfs 42:3b682b7d0388 184 uint8_t charsToRead = min((uint8_t)(size << 1), (uint8_t)(AMG88xx_PIXEL_ARRAY_SIZE << 1));
hisyamfs 42:3b682b7d0388 185 uint8_t rawArray[charsToRead];
hisyamfs 42:3b682b7d0388 186 this->read(AMG88xx_PIXEL_OFFSET, rawArray, charsToRead);
hisyamfs 42:3b682b7d0388 187
hisyamfs 42:3b682b7d0388 188 for(int i=0; i<size; i++){
hisyamfs 42:3b682b7d0388 189 uint8_t pos = i << 1;
hisyamfs 42:3b682b7d0388 190 recast = ((uint16_t)rawArray[pos + 1] << 8) | ((uint16_t)rawArray[pos]);
hisyamfs 42:3b682b7d0388 191
hisyamfs 42:3b682b7d0388 192 converted = int12ToFloat(recast) * AMG88xx_PIXEL_TEMP_CONVERSION;
hisyamfs 42:3b682b7d0388 193 buf[i] = converted;
hisyamfs 42:3b682b7d0388 194 }
hisyamfs 42:3b682b7d0388 195 }
hisyamfs 42:3b682b7d0388 196
hisyamfs 42:3b682b7d0388 197 /**************************************************************************/
hisyamfs 42:3b682b7d0388 198 /*!
hisyamfs 42:3b682b7d0388 199 @brief write one char of data to the specified register
hisyamfs 42:3b682b7d0388 200 @param reg the register to write to
hisyamfs 42:3b682b7d0388 201 @param value the value to write
hisyamfs 42:3b682b7d0388 202 */
hisyamfs 42:3b682b7d0388 203 /**************************************************************************/
hisyamfs 42:3b682b7d0388 204 void Adafruit_AMG88xx::write8(uint8_t reg, uint8_t value)
hisyamfs 42:3b682b7d0388 205 {
hisyamfs 42:3b682b7d0388 206 this->write(reg, &value, 1);
hisyamfs 42:3b682b7d0388 207 }
hisyamfs 42:3b682b7d0388 208
hisyamfs 42:3b682b7d0388 209 /**************************************************************************/
hisyamfs 42:3b682b7d0388 210 /*!
hisyamfs 42:3b682b7d0388 211 @brief read one char of data from the specified register
hisyamfs 42:3b682b7d0388 212 @param reg the register to read
hisyamfs 42:3b682b7d0388 213 @returns one char of register data
hisyamfs 42:3b682b7d0388 214 */
hisyamfs 42:3b682b7d0388 215 /**************************************************************************/
hisyamfs 42:3b682b7d0388 216 uint8_t Adafruit_AMG88xx::read8(uint8_t reg)
hisyamfs 42:3b682b7d0388 217 {
hisyamfs 42:3b682b7d0388 218 uint8_t ret;
hisyamfs 42:3b682b7d0388 219 this->read(reg, &ret, 1);
hisyamfs 42:3b682b7d0388 220 return ret;
hisyamfs 42:3b682b7d0388 221 }
hisyamfs 42:3b682b7d0388 222
hisyamfs 42:3b682b7d0388 223 int Adafruit_AMG88xx::read(uint8_t reg, uint8_t *buf, uint8_t num)
hisyamfs 42:3b682b7d0388 224 {
hisyamfs 42:3b682b7d0388 225 // char value;
hisyamfs 42:3b682b7d0388 226 // char pos = 0;
hisyamfs 42:3b682b7d0388 227
hisyamfs 42:3b682b7d0388 228 // //on arduino we need to read in AMG_I2C_CHUNKSIZE char chunks
hisyamfs 42:3b682b7d0388 229 // while(pos < num){
hisyamfs 42:3b682b7d0388 230 // char read_now = min((char)AMG_I2C_CHUNKSIZE, (char)(num - pos));
hisyamfs 42:3b682b7d0388 231 // Wire.beginTransmission((char)_i2caddr);
hisyamfs 42:3b682b7d0388 232 // Wire.write((char)reg + pos);
hisyamfs 42:3b682b7d0388 233 // Wire.endTransmission();
hisyamfs 42:3b682b7d0388 234 // Wire.requestFrom((char)_i2caddr, read_now);
hisyamfs 42:3b682b7d0388 235
hisyamfs 42:3b682b7d0388 236 // #ifdef I2C_DEBUG
hisyamfs 42:3b682b7d0388 237 // Serial.print("[$"); Serial.print(reg + pos, HEX); Serial.print("] -> ");
hisyamfs 42:3b682b7d0388 238 // #endif
hisyamfs 42:3b682b7d0388 239 // for(int i=0; i<read_now; i++){
hisyamfs 42:3b682b7d0388 240 // buf[pos] = Wire.read();
hisyamfs 42:3b682b7d0388 241 // #ifdef I2C_DEBUG
hisyamfs 42:3b682b7d0388 242 // Serial.print("0x"); Serial.print(buf[pos], HEX); Serial.print(", ");
hisyamfs 42:3b682b7d0388 243 // #endif
hisyamfs 42:3b682b7d0388 244 // pos++;
hisyamfs 42:3b682b7d0388 245 // }
hisyamfs 42:3b682b7d0388 246 // #ifdef I2C_DEBUG
hisyamfs 42:3b682b7d0388 247 // Serial.println();
hisyamfs 42:3b682b7d0388 248 // #endif
hisyamfs 42:3b682b7d0388 249 // }
hisyamfs 42:3b682b7d0388 250 char reg_dest = reg;
hisyamfs 42:3b682b7d0388 251 char rx_buf[num];
hisyamfs 42:3b682b7d0388 252 int nack = _i2c.write(_i2caddr, &reg_dest, 1, 1); // no stop
hisyamfs 42:3b682b7d0388 253 nack = _i2c.read(_i2caddr, rx_buf, num);
hisyamfs 42:3b682b7d0388 254 for (int i = 0; i < num; i++) {
hisyamfs 42:3b682b7d0388 255 buf[i] = (uint8_t) rx_buf[i];
hisyamfs 42:3b682b7d0388 256 }
hisyamfs 42:3b682b7d0388 257 return nack;
hisyamfs 42:3b682b7d0388 258 }
hisyamfs 42:3b682b7d0388 259
hisyamfs 42:3b682b7d0388 260 int Adafruit_AMG88xx::write(uint8_t reg, uint8_t *buf, uint8_t num)
hisyamfs 42:3b682b7d0388 261 {
hisyamfs 42:3b682b7d0388 262 // #ifdef I2C_DEBUG
hisyamfs 42:3b682b7d0388 263 // Serial.print("[$"); Serial.print(reg, HEX); Serial.print("] <- ");
hisyamfs 42:3b682b7d0388 264 // #endif
hisyamfs 42:3b682b7d0388 265 // Wire.beginTransmission((char)_i2caddr);
hisyamfs 42:3b682b7d0388 266 // Wire.write((char)reg);
hisyamfs 42:3b682b7d0388 267 // for (int i=0; i<num; i++) {
hisyamfs 42:3b682b7d0388 268 // Wire.write(buf[i]);
hisyamfs 42:3b682b7d0388 269 // #ifdef I2C_DEBUG
hisyamfs 42:3b682b7d0388 270 // Serial.print("0x"); Serial.print(buf[i], HEX); Serial.print(", ");
hisyamfs 42:3b682b7d0388 271 // #endif
hisyamfs 42:3b682b7d0388 272 // }
hisyamfs 42:3b682b7d0388 273 // Wire.endTransmission();
hisyamfs 42:3b682b7d0388 274 // #ifdef I2C_DEBUG
hisyamfs 42:3b682b7d0388 275 // Serial.println();
hisyamfs 42:3b682b7d0388 276 // #endif
hisyamfs 42:3b682b7d0388 277 char reg_dest = reg;
hisyamfs 42:3b682b7d0388 278 char tx_buf[num];
hisyamfs 42:3b682b7d0388 279 for (int i = 0; i < num; i++) {
hisyamfs 42:3b682b7d0388 280 tx_buf[i] = (char) buf[i];
hisyamfs 42:3b682b7d0388 281 }
hisyamfs 42:3b682b7d0388 282 int nack = _i2c.write(_i2caddr, &reg_dest, 1, 1); // no stop
hisyamfs 42:3b682b7d0388 283 nack = _i2c.write(_i2caddr, tx_buf, num);
hisyamfs 42:3b682b7d0388 284 return nack;
hisyamfs 42:3b682b7d0388 285 }
hisyamfs 42:3b682b7d0388 286
hisyamfs 42:3b682b7d0388 287 /**************************************************************************/
hisyamfs 42:3b682b7d0388 288 /*!
hisyamfs 42:3b682b7d0388 289 @brief convert a 12-bit signed magnitude value to a floating point number
hisyamfs 42:3b682b7d0388 290 @param val the 12-bit signed magnitude value to be converted
hisyamfs 42:3b682b7d0388 291 @returns the converted floating point value
hisyamfs 42:3b682b7d0388 292 */
hisyamfs 42:3b682b7d0388 293 /**************************************************************************/
hisyamfs 42:3b682b7d0388 294 float Adafruit_AMG88xx::signedMag12ToFloat(uint16_t val)
hisyamfs 42:3b682b7d0388 295 {
hisyamfs 42:3b682b7d0388 296 //take first 11 bits as absolute val
hisyamfs 42:3b682b7d0388 297 uint16_t absVal = (val & 0x7FF);
hisyamfs 42:3b682b7d0388 298
hisyamfs 42:3b682b7d0388 299 return (val & 0x800) ? 0 - (float)absVal : (float)absVal ;
hisyamfs 42:3b682b7d0388 300 }
hisyamfs 42:3b682b7d0388 301
hisyamfs 42:3b682b7d0388 302 /**************************************************************************/
hisyamfs 42:3b682b7d0388 303 /*!
hisyamfs 42:3b682b7d0388 304 @brief convert a 12-bit integer two's complement value to a floating point number
hisyamfs 42:3b682b7d0388 305 @param val the 12-bit integer two's complement value to be converted
hisyamfs 42:3b682b7d0388 306 @returns the converted floating point value
hisyamfs 42:3b682b7d0388 307 */
hisyamfs 42:3b682b7d0388 308 /**************************************************************************/
hisyamfs 42:3b682b7d0388 309 float Adafruit_AMG88xx::int12ToFloat(uint16_t val)
hisyamfs 42:3b682b7d0388 310 {
hisyamfs 42:3b682b7d0388 311 uint16_t sVal = (val << 4); //shift to left so that sign bit of 12 bit integer number is placed on sign bit of 16 bit signed integer number
hisyamfs 42:3b682b7d0388 312 return sVal >> 4; //shift back the signed number, return converts to float
hisyamfs 42:3b682b7d0388 313 }
hisyamfs 42:3b682b7d0388 314
hisyamfs 42:3b682b7d0388 315 /**
hisyamfs 42:3b682b7d0388 316 * @brief helper function, constraints the value
hisyamfs 42:3b682b7d0388 317 * @param value variable to be constrained
hisyamfs 42:3b682b7d0388 318 * @param min minimum value of the variable
hisyamfs 42:3b682b7d0388 319 */
hisyamfs 42:3b682b7d0388 320 int Adafruit_AMG88xx::constrain(int value, int min, int max)
hisyamfs 42:3b682b7d0388 321 {
hisyamfs 42:3b682b7d0388 322 if (value > max) {
hisyamfs 42:3b682b7d0388 323 return max;
hisyamfs 42:3b682b7d0388 324 }
hisyamfs 42:3b682b7d0388 325 else if (value < min) {
hisyamfs 42:3b682b7d0388 326 return min;
hisyamfs 42:3b682b7d0388 327 }
hisyamfs 42:3b682b7d0388 328 else {
hisyamfs 42:3b682b7d0388 329 return value;
hisyamfs 42:3b682b7d0388 330 }
hisyamfs 42:3b682b7d0388 331 }
hisyamfs 42:3b682b7d0388 332
hisyamfs 42:3b682b7d0388 333 int Adafruit_AMG88xx::min(int val1, int val2) {
hisyamfs 42:3b682b7d0388 334 if (val1 < val2) return val1;
hisyamfs 42:3b682b7d0388 335 else return val2;
hisyamfs 42:3b682b7d0388 336 }
hisyamfs 42:3b682b7d0388 337
hisyamfs 42:3b682b7d0388 338 int Adafruit_AMG88xx::max(int val1, int val2) {
hisyamfs 42:3b682b7d0388 339 if (val1 > val2) return val1;
hisyamfs 42:3b682b7d0388 340 else return val2;
hisyamfs 42:3b682b7d0388 341 }
hisyamfs 42:3b682b7d0388 342
hisyamfs 42:3b682b7d0388 343 uint8_t Adafruit_AMG88xx::min(uint8_t val1, uint8_t val2) {
hisyamfs 42:3b682b7d0388 344 if (val1 < val2) return val1;
hisyamfs 42:3b682b7d0388 345 else return val2;
hisyamfs 42:3b682b7d0388 346 }
hisyamfs 42:3b682b7d0388 347
hisyamfs 42:3b682b7d0388 348 uint8_t Adafruit_AMG88xx::max(uint8_t val1, uint8_t val2) {
hisyamfs 42:3b682b7d0388 349 if (val1 > val2) return val1;
hisyamfs 42:3b682b7d0388 350 else return val2;
hisyamfs 42:3b682b7d0388 351 }