Daniel Worrall / TLV320

Library for Texas Instruments TLV320AIC23B hi-def audio chip note: requires I2SSlave abstraction library

Dependents:   playback FTSESpeech i2s_audio_echo i2s_audio_sampler ... more

TLV320.cpp@1:7e76c6f56169, 2011-08-04 (annotated)

Committer:
d_worrall
Date:
Thu Aug 04 15:07:00 2011 +0000
Revision:
1:7e76c6f56169
Parent:
0:bb2411673898 
version 2.29

Who changed what in which revision?

UserRevisionLine numberNew contents of line
d_worrall 0:bb2411673898 1 /**
d_worrall 0:bb2411673898 2 * @author Ioannis Kedros, Daniel Worrall
d_worrall 0:bb2411673898 3 *
d_worrall 0:bb2411673898 4 * @section LICENSE
d_worrall 0:bb2411673898 5 *
d_worrall 0:bb2411673898 6 * Copyright (c) 2011 mbed
d_worrall 0:bb2411673898 7 *
d_worrall 0:bb2411673898 8 * Permission is hereby granted, free of charge, to any person obtaining a copy
d_worrall 0:bb2411673898 9 * of this software and associated documentation files (the "Software"), to deal
d_worrall 0:bb2411673898 10 * in the Software without restriction, including without limitation the rights
d_worrall 0:bb2411673898 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
d_worrall 0:bb2411673898 12 * copies of the Software, and to permit persons to whom the Software is
d_worrall 0:bb2411673898 13 * furnished to do so, subject to the following conditions:
d_worrall 0:bb2411673898 14 *
d_worrall 0:bb2411673898 15 * The above copyright notice and this permission notice shall be included in
d_worrall 0:bb2411673898 16 * all copies or substantial portions of the Software.
d_worrall 0:bb2411673898 17 *
d_worrall 0:bb2411673898 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
d_worrall 0:bb2411673898 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
d_worrall 0:bb2411673898 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
d_worrall 0:bb2411673898 21 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
d_worrall 0:bb2411673898 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
d_worrall 0:bb2411673898 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
d_worrall 0:bb2411673898 24 * THE SOFTWARE.
d_worrall 0:bb2411673898 25 *
d_worrall 0:bb2411673898 26 * @section DESCRIPTION
d_worrall 0:bb2411673898 27 * Library for Texas instruments TLV320AIC23B library NXP LPC1768
d_worrall 0:bb2411673898 28 *
d_worrall 0:bb2411673898 29 */
d_worrall 0:bb2411673898 30
d_worrall 0:bb2411673898 31 #include "mbed.h"
d_worrall 0:bb2411673898 32 #include "TLV320.h"
d_worrall 0:bb2411673898 33
d_worrall 0:bb2411673898 34 TLV320::TLV320(PinName sda, PinName scl, int addr, PinName tx_sda, PinName tx_ws, PinName clk, PinName rx_sda, PinName rx_ws)
d_worrall 0:bb2411673898 35 : mAddr(addr), mI2c_(sda, scl), mI2s_(tx_sda, tx_ws, clk, rx_sda, rx_ws){
d_worrall 0:bb2411673898 36 mI2c_.frequency(150000);
d_worrall 0:bb2411673898 37 reset(); //TLV resets
d_worrall 0:bb2411673898 38 power(0x07); //Power Up the TLV320, but not the MIC, ADC and LINE
d_worrall 0:bb2411673898 39 format(16, STEREO); //16Bit I2S protocol format, STEREO
d_worrall 0:bb2411673898 40 frequency(44100); //Default sample frequency is 44.1kHz
d_worrall 0:bb2411673898 41 bypass(false); //Do not bypass device
d_worrall 0:bb2411673898 42 mute(false); //Not muted
d_worrall 0:bb2411673898 43 activateDigitalInterface_(); //The digital part of the chip is active
d_worrall 0:bb2411673898 44 outputVolume(0.7, 0.7); //Headphone volume to the default state
d_worrall 0:bb2411673898 45 rxBuffer = &mI2s_.rxBuffer[0];
d_worrall 0:bb2411673898 46 }
d_worrall 0:bb2411673898 47 //Public Functions
d_worrall 0:bb2411673898 48 /******************************************************
d_worrall 0:bb2411673898 49 * Function name: inputVolume()
d_worrall 0:bb2411673898 50 *
d_worrall 0:bb2411673898 51 * Description: set line in volume for left and right channels
d_worrall 0:bb2411673898 52 *
d_worrall 0:bb2411673898 53 * Parameters: float leftVolumeIn, float rightVolumeIn
d_worrall 0:bb2411673898 54 * Returns: int 0 (success), -1 (value out of range)
d_worrall 0:bb2411673898 55 ******************************************************/
d_worrall 0:bb2411673898 56 int TLV320::inputVolume(float leftVolumeIn, float rightVolumeIn){
d_worrall 0:bb2411673898 57 //check values are in range
d_worrall 0:bb2411673898 58 if((leftVolumeIn < 0.0)||leftVolumeIn > 1.0) return -1;
d_worrall 0:bb2411673898 59 if((rightVolumeIn < 0.0)||rightVolumeIn > 1.0) return -1;
d_worrall 0:bb2411673898 60 //convert float to encoded char
d_worrall 0:bb2411673898 61 char left = (char)31*leftVolumeIn;
d_worrall 0:bb2411673898 62 char right = (char)31*rightVolumeIn;
d_worrall 0:bb2411673898 63 //Left Channel
d_worrall 0:bb2411673898 64 cmd[1] = left | (0 << 7); //set volume
d_worrall 0:bb2411673898 65 cmd[0] = LEFT_LINE_INPUT_CHANNEL_VOLUME_CONTROL; //set address
d_worrall 0:bb2411673898 66 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 67 //Right Channel
d_worrall 0:bb2411673898 68 cmd[1] = right | (0 << 7); //set volume
d_worrall 0:bb2411673898 69 cmd[0] = RIGHT_LINE_INPUT_CHANNEL_VOLUME_CONTROL; //set address
d_worrall 0:bb2411673898 70 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 71 return 0;
d_worrall 0:bb2411673898 72 }
d_worrall 0:bb2411673898 73 /******************************************************
d_worrall 0:bb2411673898 74 * Function name: outputVolume()
d_worrall 0:bb2411673898 75 *
d_worrall 0:bb2411673898 76 * Description: Set headphone (line out) volume for left an right channels
d_worrall 0:bb2411673898 77 *
d_worrall 0:bb2411673898 78 * Parameters: float leftVolumeOut, float rightVolumeOut
d_worrall 0:bb2411673898 79 * Returns: int 0 (success), -1 (value out of range)
d_worrall 0:bb2411673898 80 ******************************************************/
d_worrall 0:bb2411673898 81 int TLV320::outputVolume(float leftVolumeOut, float rightVolumeOut){
d_worrall 0:bb2411673898 82 //check values are in range
d_worrall 0:bb2411673898 83 if((leftVolumeOut < 0.0)||leftVolumeOut > 1.0) return -1;
d_worrall 0:bb2411673898 84 if((rightVolumeOut < 0.0)||rightVolumeOut > 1.0) return -1;
d_worrall 0:bb2411673898 85 //convert float to encoded char
d_worrall 0:bb2411673898 86 char left = (char)(79*leftVolumeOut)+0x30;
d_worrall 0:bb2411673898 87 char right = (char)(79*rightVolumeOut)+0x30;
d_worrall 0:bb2411673898 88 //Left Channel
d_worrall 0:bb2411673898 89 cmd[1] = left | (1 << 7); //set volume
d_worrall 0:bb2411673898 90 cmd[0] = LEFT_CHANNEL_HEADPHONE_VOLUME_CONTROL; //set address
d_worrall 0:bb2411673898 91 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 92 //Right Channel
d_worrall 0:bb2411673898 93 cmd[1] = right | (1 << 7); //set volume
d_worrall 0:bb2411673898 94 cmd[0] = RIGHT_CHANNEL_HEADPHONE_VOLUME_CONTROL; //set address
d_worrall 0:bb2411673898 95 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 96 return 0;
d_worrall 0:bb2411673898 97 }
d_worrall 0:bb2411673898 98 /******************************************************
d_worrall 0:bb2411673898 99 * Function name: bypass()
d_worrall 0:bb2411673898 100 *
d_worrall 0:bb2411673898 101 * Description: Send TLV320 into bypass mode, i.e. connect input to output
d_worrall 0:bb2411673898 102 *
d_worrall 0:bb2411673898 103 * Parameters: bool bypassVar
d_worrall 0:bb2411673898 104 * Returns: none
d_worrall 0:bb2411673898 105 ******************************************************/
d_worrall 0:bb2411673898 106 void TLV320::bypass(bool bypassVar){
d_worrall 0:bb2411673898 107 if(bypassVar == true)
d_worrall 0:bb2411673898 108 cmd[1] = (1 << 3) | (0 << 4) | (0 << 5);//bypass enabled, DAC disabled, sidetone insertion disabled
d_worrall 0:bb2411673898 109 else
d_worrall 0:bb2411673898 110 cmd[1] = (0 << 3) | (1 << 4); //bypass disabled, DAC enabled
d_worrall 0:bb2411673898 111 cmd[1] |= (0 << 2);
d_worrall 0:bb2411673898 112 cmd[0] = ANALOG_AUDIO_PATH_CONTROL; //set address
d_worrall 0:bb2411673898 113 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 114 }
d_worrall 0:bb2411673898 115 /******************************************************
d_worrall 0:bb2411673898 116 * Function name: mute()
d_worrall 0:bb2411673898 117 *
d_worrall 0:bb2411673898 118 * Description: Send TLV320 into mute mode
d_worrall 0:bb2411673898 119 *
d_worrall 0:bb2411673898 120 * Parameters: bool softMute
d_worrall 0:bb2411673898 121 * Returns: none
d_worrall 0:bb2411673898 122 ******************************************************/
d_worrall 0:bb2411673898 123 void TLV320::mute(bool softMute){
d_worrall 0:bb2411673898 124 if(softMute == true) cmd[1] = 0x08; //set instruction to mute
d_worrall 0:bb2411673898 125 else cmd[1] = 0x00; //set instruction to NOT mute
d_worrall 0:bb2411673898 126
d_worrall 0:bb2411673898 127 cmd[0] = DIGITAL_AUDIO_PATH_CONTROL; //set address
d_worrall 0:bb2411673898 128 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 129 }
d_worrall 0:bb2411673898 130 /******************************************************
d_worrall 0:bb2411673898 131 * Function name: power()
d_worrall 0:bb2411673898 132 *
d_worrall 0:bb2411673898 133 * Description: Switch TLV320 on/off
d_worrall 0:bb2411673898 134 *
d_worrall 0:bb2411673898 135 * Parameters: bool powerUp
d_worrall 0:bb2411673898 136 * Returns: none
d_worrall 0:bb2411673898 137 ******************************************************/
d_worrall 0:bb2411673898 138 void TLV320::power(bool powerUp){
d_worrall 0:bb2411673898 139 if(powerUp == true) cmd[1] = 0x00; //everything on
d_worrall 0:bb2411673898 140 else cmd[1] = 0xFF; //everything off
d_worrall 0:bb2411673898 141
d_worrall 0:bb2411673898 142 cmd[0] = POWER_DOWN_CONTROL; //set address
d_worrall 0:bb2411673898 143 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 144 }
d_worrall 0:bb2411673898 145 /******************************************************
d_worrall 0:bb2411673898 146 * Function name: power()
d_worrall 0:bb2411673898 147 *
d_worrall 0:bb2411673898 148 * Description: Switch on individual devices on TLV320
d_worrall 0:bb2411673898 149 *
d_worrall 0:bb2411673898 150 * Parameters: int device
d_worrall 0:bb2411673898 151 * Returns: none
d_worrall 0:bb2411673898 152 ******************************************************/
d_worrall 0:bb2411673898 153 void TLV320::power(int device){
d_worrall 0:bb2411673898 154 cmd[1] = (char)device; //set user defined commands
d_worrall 0:bb2411673898 155 cmd[0] = POWER_DOWN_CONTROL; //set address
d_worrall 0:bb2411673898 156 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 157 }
d_worrall 0:bb2411673898 158 /******************************************************
d_worrall 0:bb2411673898 159 * Function name: format()
d_worrall 0:bb2411673898 160 *
d_worrall 0:bb2411673898 161 * Description: Set interface format
d_worrall 0:bb2411673898 162 *
d_worrall 0:bb2411673898 163 * Parameters: char length, bool mode
d_worrall 0:bb2411673898 164 * Returns: none
d_worrall 0:bb2411673898 165 ******************************************************/
d_worrall 0:bb2411673898 166 void TLV320::format(char length, bool mode){
d_worrall 0:bb2411673898 167 char modeSet = (1 << 6);
d_worrall 0:bb2411673898 168 modeSet |= (1 << 5); //swap left and right channels
d_worrall 0:bb2411673898 169
d_worrall 0:bb2411673898 170 switch (length) //input data into instruction byte
d_worrall 0:bb2411673898 171 {
d_worrall 0:bb2411673898 172 case 16:
d_worrall 0:bb2411673898 173 cmd[1] = modeSet | 0x02;
d_worrall 0:bb2411673898 174 break;
d_worrall 0:bb2411673898 175 case 20:
d_worrall 0:bb2411673898 176 cmd[1] = modeSet | 0x06;
d_worrall 0:bb2411673898 177 break;
d_worrall 0:bb2411673898 178 case 24:
d_worrall 0:bb2411673898 179 cmd[1] = modeSet | 0x0A;
d_worrall 0:bb2411673898 180 break;
d_worrall 0:bb2411673898 181 case 32:
d_worrall 0:bb2411673898 182 cmd[1] = modeSet | 0x0E;
d_worrall 0:bb2411673898 183 break;
d_worrall 0:bb2411673898 184 default:
d_worrall 0:bb2411673898 185 break;
d_worrall 0:bb2411673898 186 }
d_worrall 0:bb2411673898 187 mI2s_.format(length, mode);
d_worrall 0:bb2411673898 188 cmd[0] = DIGITAL_AUDIO_INTERFACE_FORMAT; //set address
d_worrall 0:bb2411673898 189 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 190 }
d_worrall 0:bb2411673898 191 /******************************************************
d_worrall 0:bb2411673898 192 * Function name: frequency()
d_worrall 0:bb2411673898 193 *
d_worrall 0:bb2411673898 194 * Description: Set sample frequency
d_worrall 0:bb2411673898 195 *
d_worrall 0:bb2411673898 196 * Parameters: int hz
d_worrall 0:bb2411673898 197 * Returns: int 0 (success), -1 (value not recognised)
d_worrall 0:bb2411673898 198 ******************************************************/
d_worrall 0:bb2411673898 199 int TLV320::frequency(int hz){
d_worrall 0:bb2411673898 200 char rate;
d_worrall 0:bb2411673898 201 switch(hz){
d_worrall 0:bb2411673898 202 case 8000:
d_worrall 0:bb2411673898 203 rate = 0x03;
d_worrall 0:bb2411673898 204 break;
d_worrall 0:bb2411673898 205 case 8021:
d_worrall 0:bb2411673898 206 rate = 0x0B;
d_worrall 0:bb2411673898 207 break;
d_worrall 0:bb2411673898 208 case 32000:
d_worrall 0:bb2411673898 209 rate = 0x06;
d_worrall 0:bb2411673898 210 break;
d_worrall 0:bb2411673898 211 case 44100:
d_worrall 0:bb2411673898 212 rate = 0x08;
d_worrall 0:bb2411673898 213 break;
d_worrall 0:bb2411673898 214 case 48000:
d_worrall 0:bb2411673898 215 rate = 0x00;
d_worrall 0:bb2411673898 216 break;
d_worrall 0:bb2411673898 217 case 88200:
d_worrall 0:bb2411673898 218 rate = 0x0F;
d_worrall 0:bb2411673898 219 break;
d_worrall 0:bb2411673898 220 case 96000:
d_worrall 0:bb2411673898 221 rate = 0x07;
d_worrall 0:bb2411673898 222 break;
d_worrall 0:bb2411673898 223 default:
d_worrall 0:bb2411673898 224 return -1;
d_worrall 0:bb2411673898 225 }
d_worrall 0:bb2411673898 226 char clockInChar = (0 << 6);
d_worrall 0:bb2411673898 227 char clockModeChar = (1 << 0);
d_worrall 0:bb2411673898 228
d_worrall 0:bb2411673898 229 cmd[1] = (rate << 2) | clockInChar | clockModeChar; //input data into instruciton byte
d_worrall 0:bb2411673898 230 cmd[0] = SAMPLE_RATE_CONTROL; //set address
d_worrall 0:bb2411673898 231 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 232 return 0;
d_worrall 0:bb2411673898 233 }
d_worrall 0:bb2411673898 234 /******************************************************
d_worrall 0:bb2411673898 235 * Function name: reset()
d_worrall 0:bb2411673898 236 *
d_worrall 0:bb2411673898 237 * Description: Reset TLV320
d_worrall 0:bb2411673898 238 *
d_worrall 0:bb2411673898 239 * Parameters: none
d_worrall 0:bb2411673898 240 * Returns: none
d_worrall 0:bb2411673898 241 ******************************************************/
d_worrall 0:bb2411673898 242 void TLV320::reset(void){
d_worrall 0:bb2411673898 243 cmd[0] = RESET_REGISTER; //set address
d_worrall 0:bb2411673898 244 cmd[1] = 0x00; //this resets the entire device
d_worrall 0:bb2411673898 245 mI2c_.write(mAddr, cmd, 2);
d_worrall 0:bb2411673898 246 }
d_worrall 0:bb2411673898 247 /******************************************************
d_worrall 0:bb2411673898 248 * Function name: start()
d_worrall 0:bb2411673898 249 *
d_worrall 0:bb2411673898 250 * Description: Enable interrupts on the I2S port
d_worrall 0:bb2411673898 251 *
d_worrall 0:bb2411673898 252 * Parameters: int mode
d_worrall 0:bb2411673898 253 * Returns: none
d_worrall 0:bb2411673898 254 ******************************************************/
d_worrall 0:bb2411673898 255 void TLV320::start(int mode){
d_worrall 0:bb2411673898 256 mI2s_.start(mode);
d_worrall 0:bb2411673898 257 }
d_worrall 0:bb2411673898 258 /******************************************************
d_worrall 0:bb2411673898 259 * Function name: stop()
d_worrall 0:bb2411673898 260 *
d_worrall 0:bb2411673898 261 * Description: Disable interrupts on the I2S port
d_worrall 0:bb2411673898 262 *
d_worrall 0:bb2411673898 263 * Parameters: none
d_worrall 0:bb2411673898 264 * Returns: none
d_worrall 0:bb2411673898 265 ******************************************************/
d_worrall 0:bb2411673898 266 void TLV320::stop(void){
d_worrall 0:bb2411673898 267 mI2s_.stop();
d_worrall 0:bb2411673898 268 }
d_worrall 0:bb2411673898 269 /******************************************************
d_worrall 0:bb2411673898 270 * Function name: write()
d_worrall 0:bb2411673898 271 *
d_worrall 0:bb2411673898 272 * Description: Write (part of) a buffer to the I2S port
d_worrall 0:bb2411673898 273 *
d_worrall 0:bb2411673898 274 * Parameters: int *buffer, int from, int length
d_worrall 0:bb2411673898 275 * Returns: none
d_worrall 0:bb2411673898 276 ******************************************************/
d_worrall 0:bb2411673898 277 void TLV320::write(int *buffer, int from, int length){
d_worrall 0:bb2411673898 278 mI2s_.write(buffer, from, length);
d_worrall 0:bb2411673898 279 }
d_worrall 0:bb2411673898 280 /******************************************************
d_worrall 0:bb2411673898 281 * Function name: read()
d_worrall 0:bb2411673898 282 *
d_worrall 0:bb2411673898 283 * Description: Place I2SRXFIFO in rxBuffer
d_worrall 0:bb2411673898 284 *
d_worrall 0:bb2411673898 285 * Parameters: none
d_worrall 0:bb2411673898 286 * Returns: none
d_worrall 0:bb2411673898 287 ******************************************************/
d_worrall 0:bb2411673898 288 void TLV320::read(void){
d_worrall 0:bb2411673898 289 mI2s_.read();
d_worrall 0:bb2411673898 290 }
d_worrall 0:bb2411673898 291 /******************************************************
d_worrall 0:bb2411673898 292 * Function name: attach()
d_worrall 0:bb2411673898 293 *
d_worrall 0:bb2411673898 294 * Description: Attach a void/void function or void/void static member function to IRQHandler
d_worrall 0:bb2411673898 295 *
d_worrall 0:bb2411673898 296 * Parameters: none
d_worrall 0:bb2411673898 297 * Returns: none
d_worrall 0:bb2411673898 298 ******************************************************/
d_worrall 0:bb2411673898 299 void TLV320::attach(void(*fptr)(void)){
d_worrall 0:bb2411673898 300 mI2s_.attach(fptr);
d_worrall 0:bb2411673898 301 }
d_worrall 0:bb2411673898 302 //Private Functions
d_worrall 0:bb2411673898 303 /******************************************************
d_worrall 0:bb2411673898 304 * Function name: setSampleRate_()
d_worrall 0:bb2411673898 305 *
d_worrall 0:bb2411673898 306 * Description: Clocking control
d_worrall 0:bb2411673898 307 *
d_worrall 0:bb2411673898 308 * Parameters: char rate, bool clockIn, bool clockMode, bool bOSR
d_worrall 0:bb2411673898 309 * Returns: none
d_worrall 0:bb2411673898 310 ******************************************************/
d_worrall 0:bb2411673898 311 void TLV320::setSampleRate_(char rate, bool clockIn, bool clockMode, bool bOSR){
d_worrall 0:bb2411673898 312 char clockInChar;
d_worrall 0:bb2411673898 313 char clockModeChar;
d_worrall 0:bb2411673898 314 char baseOverSamplingRate;
d_worrall 0:bb2411673898 315 if(bOSR){
d_worrall 0:bb2411673898 316 baseOverSamplingRate = (1 << 0);
d_worrall 0:bb2411673898 317 } else {
d_worrall 0:bb2411673898 318 baseOverSamplingRate = (0 << 0);
d_worrall 0:bb2411673898 319 }
d_worrall 0:bb2411673898 320 if(clockIn){
d_worrall 0:bb2411673898 321 clockInChar = (1 << 6);
d_worrall 0:bb2411673898 322 } else {
d_worrall 0:bb2411673898 323 clockInChar = (0 << 6);
d_worrall 0:bb2411673898 324 }
d_worrall 0:bb2411673898 325 if(clockMode){
d_worrall 0:bb2411673898 326 clockModeChar = 0x01;
d_worrall 0:bb2411673898 327 } else {
d_worrall 0:bb2411673898 328 clockModeChar = 0x00;
d_worrall 0:bb2411673898 329 }
d_worrall 0:bb2411673898 330 cmd[1] = (rate << 2) | clockInChar | clockModeChar | baseOverSamplingRate; //input data into instruciton byte
d_worrall 0:bb2411673898 331 cmd[0] = SAMPLE_RATE_CONTROL; //set address
d_worrall 0:bb2411673898 332 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 333 }
d_worrall 0:bb2411673898 334 /******************************************************
d_worrall 0:bb2411673898 335 * Function name: activateDigitalInterface_()
d_worrall 0:bb2411673898 336 *
d_worrall 0:bb2411673898 337 * Description: Activate digital part of chip
d_worrall 0:bb2411673898 338 *
d_worrall 0:bb2411673898 339 * Parameters: none
d_worrall 0:bb2411673898 340 * Returns: none
d_worrall 0:bb2411673898 341 ******************************************************/
d_worrall 0:bb2411673898 342 void TLV320::activateDigitalInterface_(void){
d_worrall 0:bb2411673898 343 cmd[1] = 0x01; //Activate
d_worrall 0:bb2411673898 344 cmd[0] = DIGITAL_INTERFACE_ACTIVATION; //set address
d_worrall 0:bb2411673898 345 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 346 }
d_worrall 0:bb2411673898 347 /******************************************************
d_worrall 0:bb2411673898 348 * Function name: deactivateDigitalInterface_
d_worrall 0:bb2411673898 349 *
d_worrall 0:bb2411673898 350 * Description: Deactivate digital part of chip
d_worrall 0:bb2411673898 351 *
d_worrall 0:bb2411673898 352 * Parameters: none
d_worrall 0:bb2411673898 353 * Returns: none
d_worrall 0:bb2411673898 354 ******************************************************/
d_worrall 0:bb2411673898 355 //Digital interface deactivation
d_worrall 0:bb2411673898 356 void TLV320::deactivateDigitalInterface_(void){
d_worrall 0:bb2411673898 357 cmd[1] = 0x00; //Deactivate
d_worrall 0:bb2411673898 358 cmd[0] = DIGITAL_INTERFACE_ACTIVATION; //set address
d_worrall 0:bb2411673898 359 mI2c_.write(mAddr, cmd, 2); //send
d_worrall 0:bb2411673898 360 }
d_worrall 0:bb2411673898 361