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/*
control_tlv320aic3206
Created: Brendan Flynn (http://www.flexvoltbiosensor.com/) for Tympan, Jan-Feb 2017
Purpose: Control module for Texas Instruments TLV320AIC3206 compatible with Teensy Audio Library
License: MIT License. Use at your own risk.
*/
#include "control_tlv320aic3206.h"
//******************************** Constants *******************************//
#define AIC3206_I2C_ADDR 0x18
#ifndef AIC_FS
# define AIC_FS 44100UL
#endif
//define AIC_BITS 16
#define AIC_BITS 32
#define AIC_I2S_SLAVE 1
#if AIC_I2S_SLAVE
// Direction of BCLK and WCLK (reg 27) is input if a slave:
# define AIC_CLK_DIR 0
#else
// If master, make outputs:
# define AIC_CLK_DIR 0x0C
#endif
//#ifndef AIC_CODEC_CLKIN_BCLK
//# define AIC_CODEC_CLKIN_BCLK 0
//#endif
//**************************** Clock Setup **********************************//
//********************************** 44100 *********************************//
#if AIC_FS == 44100
// MCLK = 180000000 * 16 / 255 = 11.294117 MHz // FROM TEENSY, FIXED
// PLL setup. PLL_OUT = MCLK * R * J.D / P
//// J.D = 7.5264, P = 1, R = 1 => 90.32 MHz // FROM 12MHz CHA AND WHF //
// J.D = 7.9968, P = 1, R = 1 => 90.3168 MHz // For 44.1kHz exact
// J.D = 8.0000000002, P = 1, R = 1 => 9.35294117888MHz // for TEENSY 44.11764706kHz
#define PLL_J 8
#define PLL_D 0
// Bitclock divisor.
// BCLK = DAC_CLK/N = PLL_OUT/NDAC/N = 32*fs or 16*fs
// PLL_OUT = fs*NDAC*MDAC*DOSR
// BLCK = 32*fs = 1411200 = PLL
#if AIC_BITS == 16
#define BCLK_N 8
#elif AIC_BITS == 32
#define BCLK_N 4
#endif
// ADC/DAC FS setup.
// ADC_MOD_CLK = CODEC_CLKIN / (NADC * MADC)
// DAC_MOD_CLK = CODEC_CLKIN / (NDAC * MDAC)
// ADC_FS = PLL_OUT / (NADC*MADC*AOSR)
// DAC_FS = PLL_OUT / (NDAC*MDAC*DOSR)
// FS = 90.3168MHz / (8*2*128) = 44100 Hz.
// MOD = 90.3168MHz / (8*2) = 5644800 Hz
// Actual from Teensy: 44117.64706Hz * 128 => 5647058.82368Hz * 8*2 => 90352941.17888Hz
// DAC clock config.
// Note: MDAC*DOSR/32 >= RC, where RC is 8 for the default filter.
// See Table 2-21
// http://www.ti.com/lit/an/slaa463b/slaa463b.pdf
// PB1 - RC = 8. Use M8, N2
// PB25 - RC = 12. Use M8, N2
#define DOSR 128
#define NDAC 2
#define MDAC 8
#define AOSR 128
#define NADC 2
#define MADC 8
// Signal Processing Modes, Playback and Recording.
#define PRB_P 1
#define PRB_R 1
#endif // end fs if block
//**************************** Chip Setup **********************************//
//******************* INPUT DEFINITIONS *****************************//
// MIC routing registers
#define TYMPAN_MICPGA_LEFT_POSITIVE_REG 0x0134 // page 1 register 52
#define TYMPAN_MICPGA_LEFT_NEGATIVE_REG 0x0136 // page 1 register 54
#define TYMPAN_MICPGA_RIGHT_POSITIVE_REG 0x0137 // page 1 register 55
#define TYMPAN_MICPGA_RIGHT_NEGATIVE_REG 0x0139 // page 1 register 57
#define TYMPAN_MIC_ROUTING_POSITIVE_IN1 0b11000000 //
#define TYMPAN_MIC_ROUTING_POSITIVE_IN2 0b00110000 //
#define TYMPAN_MIC_ROUTING_POSITIVE_IN3 0b00001100 //
#define TYMPAN_MIC_ROUTING_POSITIVE_REVERSE 0b00000011 //
#define TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L 0b11000000 //
#define TYMPAN_MIC_ROUTING_NEGATIVE_IN2_REVERSE 0b00110000 //
#define TYMPAN_MIC_ROUTING_NEGATIVE_IN3_REVERSE 0b00001100 //
#define TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM2L 0b00000011 //
#define TYMPAN_MIC_ROUTING_RESISTANCE_10k 0b01010101
#define TYMPAN_MIC_ROUTING_RESISTANCE_20k 0b10101010
#define TYMPAN_MIC_ROUTING_RESISTANCE_40k 0b11111111
#define TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT TYMPAN_MIC_ROUTING_RESISTANCE_10k //datasheet (application notes) defaults to 20K...why?
#define TYMPAN_MICPGA_LEFT_VOLUME_REG 0x013B // page 1 register 59 // 0 to 47.5dB in 0.5dB steps
#define TYMPAN_MICPGA_RIGHT_VOLUME_REG 0x013C // page 1 register 60 // 0 to 47.5dB in 0.5dB steps
#define TYMPAN_MICPGA_VOLUME_ENABLE 0x00 // default is 0b11000000 - clear to 0 to enable
#define TYMPAN_MIC_BIAS_REG 0x0133 // page 1 reg 51
#define TYMPAN_MIC_BIAS_POWER_ON 0x40
#define TYMPAN_MIC_BIAS_POWER_OFF 0x00
#define TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_1_25 0x00
#define TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_1_7 0x01
#define TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_2_5 0x10
#define TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_VSUPPLY 0x11
#define TYMPAN_ADC_PROCESSING_BLOCK_REG 0x003d // page 0 register 61
#define TYMPAN_ADC_CHANNEL_POWER_REG 0x0051 // page 0 register81
#define TYMPAN_ADC_CHANNELS_ON 0b11000000 // power up left and right
#define TYMPAN_ADC_MUTE_REG 0x0052 // page 0, register 82
#define TYMPAN_ADC_UNMUTE 0x00
void AudioControlTLV320AIC3206::setI2Cbus(int i2cBusIndex)
{
// Setup for Master mode, pins 18/19, external pullups, 400kHz, 200ms default timeout
switch (i2cBusIndex) {
case 0:
myWire = &Wire; break;
//case 1:
// myWire = &Wire1; break; //defined in WireKinetis.h via Teensy's
case 2:
myWire = &Wire2; break; //defined in WireKinetis.h via Teensy's Wire.h
//case 3:
// myWire = &Wire3; break; //commented out in WireKinetis.h?? Why?
default:
myWire = &Wire; break;
}
}
bool AudioControlTLV320AIC3206::enable(void) {
delay(100);
myWire->begin();
delay(5);
//hard reset the AIC
//Serial.println("Hardware reset of AIC...");
//define RESET_PIN 21
#define RESET_PIN (resetPinAIC)
pinMode(RESET_PIN,OUTPUT);
digitalWrite(RESET_PIN,HIGH);delay(50); //not reset
digitalWrite(RESET_PIN,LOW);delay(50); //reset
digitalWrite(RESET_PIN,HIGH);delay(50);//not reset
aic_reset(); delay(100); //soft reset
aic_init(); delay(100);
aic_initADC(); delay(100);
aic_initDAC(); delay(100);
aic_readPage(0, 27); // check a specific register - a register read test
if (debugToSerial) Serial.println("TLV320 enable done");
return true;
}
bool AudioControlTLV320AIC3206::disable(void) {
return true;
}
//dummy function to keep compatible with Teensy Audio Library
bool AudioControlTLV320AIC3206::inputLevel(float volume) {
return false;
}
bool AudioControlTLV320AIC3206::inputSelect(int n) {
if (n == TYMPAN_INPUT_LINE_IN) {
// USE LINE IN SOLDER PADS
aic_writeAddress(TYMPAN_MICPGA_LEFT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN1 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_LEFT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN1 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// BIAS OFF
setMicBias(TYMPAN_MIC_BIAS_OFF);
if (debugToSerial) Serial.println("Set Audio Input to Line In");
return true;
} else if (n == TYMPAN_INPUT_JACK_AS_MIC) {
// mic-jack = IN3
aic_writeAddress(TYMPAN_MICPGA_LEFT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN3 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_LEFT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN3 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// BIAS on, using default
setMicBias(TYMPAN_DEFAULT_MIC_BIAS);
if (debugToSerial) Serial.println("Set Audio Input to JACK AS MIC, BIAS SET TO DEFAULT 2.5V");
return true;
} else if (n == TYMPAN_INPUT_JACK_AS_LINEIN) {
// 1
// mic-jack = IN3
aic_writeAddress(TYMPAN_MICPGA_LEFT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN3 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_LEFT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN3 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// BIAS Off
setMicBias(TYMPAN_MIC_BIAS_OFF);
if (debugToSerial) Serial.println("Set Audio Input to JACK AS LINEIN, BIAS OFF");
return true;
} else if (n == TYMPAN_INPUT_ON_BOARD_MIC) {
// on-board = IN2
aic_writeAddress(TYMPAN_MICPGA_LEFT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN2 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_LEFT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN2 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// BIAS Off
setMicBias(TYMPAN_MIC_BIAS_OFF);
if (debugToSerial) Serial.println("Set Audio Input to Tympan On-Board MIC, BIAS OFF");
return true;
}
Serial.print("controlTLV320AIC3206: ERROR: Unable to Select Input - Value not supported: ");
Serial.println(n);
return false;
}
bool AudioControlTLV320AIC3206::setMicBias(int n) {
if (n == TYMPAN_MIC_BIAS_1_25) {
aic_writeAddress(TYMPAN_MIC_BIAS_REG, TYMPAN_MIC_BIAS_POWER_ON | TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_1_25); // power up mic bias
return true;
} else if (n == TYMPAN_MIC_BIAS_1_7) {
aic_writeAddress(TYMPAN_MIC_BIAS_REG, TYMPAN_MIC_BIAS_POWER_ON | TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_1_7); // power up mic bias
return true;
} else if (n == TYMPAN_MIC_BIAS_2_5) {
aic_writeAddress(TYMPAN_MIC_BIAS_REG, TYMPAN_MIC_BIAS_POWER_ON | TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_2_5); // power up mic bias
return true;
} else if (n == TYMPAN_MIC_BIAS_VSUPPLY) {
aic_writeAddress(TYMPAN_MIC_BIAS_REG, TYMPAN_MIC_BIAS_POWER_ON | TYMPAN_MIC_BIAS_OUTPUT_VOLTAGE_VSUPPLY); // power up mic bias
return true;
} else if (n == TYMPAN_MIC_BIAS_OFF) {
aic_writeAddress(TYMPAN_MIC_BIAS_REG, TYMPAN_MIC_BIAS_POWER_OFF); // power up mic bias
return true;
}
Serial.print("controlTLV320AIC3206: ERROR: Unable to set MIC BIAS - Value not supported: ");
Serial.println(n);
return false;
}
void AudioControlTLV320AIC3206::aic_reset() {
if (debugToSerial) Serial.println("INFO: Reseting AIC");
aic_writePage(0x00, 0x01, 0x01);
// aic_writeAddress(0x0001, 0x01);
delay(10);
}
// example - turn on IN3 - mic jack, with negatives routed to CM1L and with 10k resistance
// aic_writeAddress(TYMPAN_LEFT_MICPGA_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN3 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// aic_writeAddress(TYMPAN_LEFT_MICPGA_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// aic_writeAddress(TYMPAN_RIGHT_MICPGA_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN3 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
// aic_writeAddress(TYMPAN_RIGHT_MICPGA_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
void AudioControlTLV320AIC3206::aic_initADC() {
if (debugToSerial) Serial.println("INFO: Initializing AIC ADC");
aic_writeAddress(TYMPAN_ADC_PROCESSING_BLOCK_REG, PRB_R); // processing blocks - ADC
aic_writePage(1, 61, 0); // 0x3D // Select ADC PTM_R4 Power Tune? (this line is from datasheet (application guide, Section 4.2)
aic_writePage(1, 71, 0b00110001); // 0x47 // Set MicPGA startup delay to 3.1ms
aic_writeAddress(TYMPAN_MIC_BIAS_REG, TYMPAN_MIC_BIAS_POWER_ON | TYMPAN_MIC_BIAS_2_5); // power up mic bias
aic_writeAddress(TYMPAN_MICPGA_LEFT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN2 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_LEFT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_POSITIVE_REG, TYMPAN_MIC_ROUTING_POSITIVE_IN2 & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_RIGHT_NEGATIVE_REG, TYMPAN_MIC_ROUTING_NEGATIVE_CM_TO_CM1L & TYMPAN_MIC_ROUTING_RESISTANCE_DEFAULT);
aic_writeAddress(TYMPAN_MICPGA_LEFT_VOLUME_REG, TYMPAN_MICPGA_VOLUME_ENABLE); // enable Left MicPGA, set gain to 0 dB
aic_writeAddress(TYMPAN_MICPGA_RIGHT_VOLUME_REG, TYMPAN_MICPGA_VOLUME_ENABLE); // enable Right MicPGA, set gain to 0 dB
aic_writeAddress(TYMPAN_ADC_MUTE_REG, TYMPAN_ADC_UNMUTE); // Unmute Left and Right ADC Digital Volume Control
aic_writeAddress(TYMPAN_ADC_CHANNEL_POWER_REG, TYMPAN_ADC_CHANNELS_ON); // Unmute Left and Right ADC Digital Volume Control
}
// set MICPGA volume, 0-47.5dB in 0.5dB setps
bool AudioControlTLV320AIC3206::setInputGain_dB(float volume) {
if (volume < 0.0) {
volume = 0.0; // 0.0 dB
Serial.println("controlTLV320AIC3206: WARNING: Attempting to set MIC volume outside range");
}
if (volume > 47.5) {
volume = 47.5; // 47.5 dB
Serial.println("controlTLV320AIC3206: WARNING: Attempting to set MIC volume outside range");
}
volume = volume * 2.0; // convert to value map (0.5 dB steps)
int8_t volume_int = (int8_t) (round(volume)); // round
if (debugToSerial) {
Serial.print("INFO: Setting MIC volume to ");
Serial.print(volume, 1);
Serial.print(". Converted to volume map => ");
Serial.println(volume_int);
}
aic_writeAddress(TYMPAN_MICPGA_LEFT_VOLUME_REG, TYMPAN_MICPGA_VOLUME_ENABLE | volume_int); // enable Left MicPGA, set gain to 0 dB
aic_writeAddress(TYMPAN_MICPGA_RIGHT_VOLUME_REG, TYMPAN_MICPGA_VOLUME_ENABLE | volume_int); // enable Right MicPGA, set gain to 0 dB
return true;
}
//******************* OUTPUT DEFINITIONS *****************************//
#define TYMPAN_DAC_PROCESSING_BLOCK_REG 0x003c // page 0 register 60
#define TYMPAN_DAC_VOLUME_LEFT_REG 0x0041 // page 0 reg 65
#define TYMPAN_DAC_VOLUME_RIGHT_REG 0x0042 // page 0 reg 66
//volume control, similar to Teensy Audio Board
// value between 0.0 and 1.0. Set to span -58 to +15 dB
bool AudioControlTLV320AIC3206::volume(float volume) {
volume = max(0.0, min(1.0, volume));
float vol_dB = -58.f + (15.0 - (-58.0f)) * volume;
volume_dB(vol_dB);
return true;
}
bool AudioControlTLV320AIC3206::enableAutoMuteDAC(bool enable, uint8_t mute_delay_code=7) {
if (enable) {
mute_delay_code = max(0,min(mute_delay_code,7));
if (mute_delay_code == 0) enable = false;
} else {
mute_delay_code = 0; //this disables the auto mute
}
uint8_t val = aic_readPage(0,64);
val = val & 0b10001111; //clear these bits
val = val | (mute_delay_code << 4); //set these bits
aic_writePage(0,64,val);
return enable;
}
// -63.6 to +24 dB in 0.5dB steps. uses signed 8-bit
bool AudioControlTLV320AIC3206::volume_dB(float volume) {
// Constrain to limits
if (volume > 24.0) {
volume = 24.0;
Serial.println("controlTLV320AIC3206: WARNING: Attempting to set DAC Volume outside range");
}
if (volume < -63.5) {
volume = -63.5;
Serial.println("controlTLV320AIC3206: WARNING: Attempting to set DAC Volume outside range");
}
volume = volume * 2.0; // convert to value map (0.5 dB steps)
int8_t volume_int = (int8_t) (round(volume)); // round
if (debugToSerial) {
Serial.print("controlTLV320AIC3206: Setting DAC volume to ");
Serial.print(volume, 1);
Serial.print(". Converted to volume map => ");
Serial.println(volume_int);
}
aic_writeAddress(TYMPAN_DAC_VOLUME_RIGHT_REG, volume_int);
aic_writeAddress(TYMPAN_DAC_VOLUME_LEFT_REG, volume_int);
return true;
}
void AudioControlTLV320AIC3206::aic_initDAC() {
if (debugToSerial) Serial.println("controlTLV320AIC3206: Initializing AIC DAC");
outputSelect(TYMPAN_OUTPUT_HEADPHONE_JACK_OUT); //default
}
bool AudioControlTLV320AIC3206::outputSelect(int n) {
// PLAYBACK SETUP:
// HPL/HPR are headphone output left and right
// LOL/LOR are line output left and right
aic_writeAddress(TYMPAN_DAC_PROCESSING_BLOCK_REG, PRB_P); // processing blocks - DAC
//mute, disable, then power-down everything
aic_writePage(1, 16, 0b01000000); // mute HPL Driver, 0 gain
aic_writePage(1, 17, 0b01000000); // mute HPR Driver, 0 gain
aic_writePage(1, 18, 0b01000000); // mute LOL Driver, 0 gain
aic_writePage(1, 19, 0b01000000); // mute LOR Driver, 0 gain
aic_writePage(0, 63, 0); //disable LDAC/RDAC
aic_writePage(1, 9, 0); // Power down HPL/HPR and LOL/LOR drivers
aic_writePage(1,12,0); //unroute from HPL
aic_writePage(1,13,0); //unroute from HPR
aic_writePage(1,14,0); //unroute from LOL
aic_writePage(1,15,0); //unroute from LOR
if (n == TYMPAN_OUTPUT_HEADPHONE_JACK_OUT) {
//aic_writePage(1, 20, 0x25); // 0x14 De-Pop
//aic_writePage(1, 12, 8); // route LDAC/RDAC to HPL/HPR
//aic_writePage(1, 13, 8); // route LDAC/RDAC to HPL/HPR
aic_writePage(1, 12, 0b00001000); // route LDAC/RDAC to HPL/HPR
aic_writePage(1, 13, 0b00001000); // route LDAC/RDAC to HPL/HPR
aic_writePage(0, 63, 0xD6); // 0x3F // Power up LDAC/RDAC
aic_writePage(1, 16, 0); // unmute HPL Driver, 0 gain
aic_writePage(1, 17, 0); // unmute HPR Driver, 0 gain
aic_writePage(1, 9, 0x30); // Power up HPL/HPR drivers 0b00110000
delay(100);
aic_writeAddress(TYMPAN_DAC_VOLUME_LEFT_REG, 0); // default to 0 dB
aic_writeAddress(TYMPAN_DAC_VOLUME_RIGHT_REG, 0); // default to 0 dB
aic_writePage(0, 64, 0); // 0x40 // Unmute LDAC/RDAC
if (debugToSerial) Serial.println("controlTLV320AIC3206: Set Audio Output to Headphone Jack");
return true;
} else if (n == TYMPAN_OUTPUT_LINE_OUT) {
//aic_writePage(1, 20, 0x25); // 0x14 De-Pop
aic_writePage(1, 14, 0b00001000); // route LDAC/RDAC to LOL/LOR
aic_writePage(1, 15, 0b00001000); // route LDAC/RDAC to LOL/LOR
aic_writePage(0, 63, 0xD6); // 0x3F // Power up LDAC/RDAC
aic_writePage(1, 18, 0); // unmute LOL Driver, 0 gain
aic_writePage(1, 19, 0); // unmute LOR Driver, 0 gain
aic_writePage(1, 9, 0b00001100); // Power up LOL/LOR drivers
delay(100);
aic_writeAddress(TYMPAN_DAC_VOLUME_LEFT_REG, 0); // default to 0 dB
aic_writeAddress(TYMPAN_DAC_VOLUME_RIGHT_REG, 0); // default to 0 dB
aic_writePage(0, 64, 0); // 0x40 // Unmute LDAC/RDAC
if (debugToSerial) Serial.println("controlTLV320AIC3206: Set Audio Output to Line Out");
return true;
} else if (n == TYMPAN_OUTPUT_HEADPHONE_AND_LINE_OUT) {
aic_writePage(1, 12, 0b00001000); // route LDAC/RDAC to HPL/HPR
aic_writePage(1, 13, 0b00001000); // route LDAC/RDAC to HPL/HPR
aic_writePage(1, 14, 0b00001000); // route LDAC/RDAC to LOL/LOR
aic_writePage(1, 15, 0b00001000); // route LDAC/RDAC to LOL/LOR
aic_writePage(0, 63, 0xD6); // 0x3F // Power up LDAC/RDAC
aic_writePage(1, 18, 0); // unmute LOL Driver, 0 gain
aic_writePage(1, 19, 0); // unmute LOR Driver, 0 gain
aic_writePage(1, 16, 0); // unmute HPL Driver, 0 gain
aic_writePage(1, 17, 0); // unmute HPR Driver, 0 gain
aic_writePage(1, 9, 0b00111100); // Power up both the HPL/HPR and the LOL/LOR drivers
delay(100);
aic_writeAddress(TYMPAN_DAC_VOLUME_LEFT_REG, 0); // default to 0 dB
aic_writeAddress(TYMPAN_DAC_VOLUME_RIGHT_REG, 0); // default to 0 dB
aic_writePage(0, 64, 0); // 0x40 // Unmute LDAC/RDAC
if (debugToSerial) Serial.println("controlTLV320AIC3206: Set Audio Output to Headphone Jack and Line out");
return true;
}
Serial.print("controlTLV320AIC3206: ERROR: Unable to Select Output - Value not supported: ");
Serial.println(n);
return false;
}
void AudioControlTLV320AIC3206::aic_init() {
if (debugToSerial) Serial.println("controlTLV320AIC3206: Initializing AIC");
// PLL
aic_writePage(0, 4, 3); // 0x04 low PLL clock range, MCLK is PLL input, PLL_OUT is CODEC_CLKIN
aic_writePage(0, 5, (PLL_J != 0 ? 0x91 : 0x11));
aic_writePage(0, 6, PLL_J);
aic_writePage(0, 7, PLL_D >> 8);
aic_writePage(0, 8, PLL_D &0xFF);
// CLOCKS
aic_writePage(0, 11, 0x80 | NDAC); // 0x0B
aic_writePage(0, 12, 0x80 | MDAC); // 0x0C
aic_writePage(0, 13, 0); // 0x0D
aic_writePage(0, 14, DOSR); // 0x0E
// aic_writePage(0, 18, 0); // 0x12 // powered down, ADC_CLK same as DAC_CLK
// aic_writePage(0, 19, 0); // 0x13 // powered down, ADC_MOD_CLK same as DAC_MOD_CLK
aic_writePage(0, 18, 0x80 | NADC); // 0x12
aic_writePage(0, 19, 0x80 | MADC); // 0x13
aic_writePage(0, 20, AOSR);
aic_writePage(0, 30, 0x80 | BCLK_N); // power up BLCK N Divider, default is 128
// POWER
aic_writePage(1, 0x01, 8); // Reg 1, Val = 8 = 0b00001000 = disable weak connection AVDD to DVDD. Keep headphone charge pump disabled.
aic_writePage(1, 0x02, 0); // Reg 2, Val = 0 = 0b00000000 = Enable Master Analog Power Control
aic_writePage(1, 0x7B, 1); // Reg 123, Val = 1 = 0b00000001 = Set reference to power up in 40ms when analog blocks are powered up
aic_writePage(1, 0x7C, 6); // Reg 124, Val = 6 = 0b00000110 = Charge Pump, full peak current (000), clock divider (110) to Div 6 = 333 kHz
aic_writePage(1, 0x01, 10); // Reg 1, Val = 10 = 0x0A = 0b00001010. Activate headphone charge pump.
aic_writePage(1, 0x0A, 0); // Reg 10, Val = 0 = common mode 0.9 for full chip, HP, LO // from WHF/CHA
aic_writePage(1, 0x47, 0x31); // Reg 71, val = 0x31 = 0b00110001 = Set input power-up time to 3.1ms (for ADC)
aic_writePage(1, 0x7D, 0x53); // Reg 125, Val = 0x53 = 0b01010011 = 0 10 1 00 11: HPL is master gain, Enable ground-centered mode, 100% output power, DC offset correction // from WHF/CHA
// !!!!!!!!! The below writes are from WHF/CHA - probably don't need?
// aic_writePage(1, 1, 10); // 10 = 0b00001010 // weakly connect AVDD to DVDD. Activate charge pump
aic_writePage(0, 27, 0x01 | AIC_CLK_DIR | (AIC_BITS == 32 ? 0x30 : 0)); // 0x1B
// aic_writePage(0, 28, 0); // 0x1C
}
unsigned int AudioControlTLV320AIC3206::aic_readPage(uint8_t page, uint8_t reg)
{
unsigned int val;
if (aic_goToPage(page)) {
myWire->beginTransmission(AIC3206_I2C_ADDR);
myWire->write(reg);
unsigned int result = myWire->endTransmission();
if (result != 0) {
Serial.print("controlTLV320AIC3206: ERROR: Read Page. Page: ");Serial.print(page);
Serial.print(" Reg: ");Serial.print(reg);
Serial.print(". Received Error During Read Page: ");
Serial.println(result);
val = 300 + result;
return val;
}
if (myWire->requestFrom(AIC3206_I2C_ADDR, 1) < 1) {
Serial.print("controlTLV320AIC3206: ERROR: Read Page. Page: ");Serial.print(page);
Serial.print(" Reg: ");Serial.print(reg);
Serial.println(". Nothing to return");
val = 400;
return val;
}
if (myWire->available() >= 1) {
uint16_t val = myWire->read();
if (debugToSerial) {
Serial.print("controlTLV320AIC3206: Read Page. Page: ");Serial.print(page);
Serial.print(" Reg: ");Serial.print(reg);
Serial.print(". Received: ");
Serial.println(val, HEX);
}
return val;
}
} else {
Serial.print("controlTLV320AIC3206: INFO: Read Page. Page: ");Serial.print(page);
Serial.print(" Reg: ");Serial.print(reg);
Serial.println(". Failed to go to read page. Could not go there.");
val = 500;
return val;
}
val = 600;
return val;
}
bool AudioControlTLV320AIC3206::aic_writeAddress(uint16_t address, uint8_t val) {
uint8_t reg = (uint8_t) (address & 0xFF);
uint8_t page = (uint8_t) ((address >> 8) & 0xFF);
return aic_writePage(page, reg, val);
}
bool AudioControlTLV320AIC3206::aic_writePage(uint8_t page, uint8_t reg, uint8_t val) {
if (debugToSerial) {
Serial.print("controlTLV320AIC3206: Write Page. Page: ");Serial.print(page);
Serial.print(" Reg: ");Serial.print(reg);
Serial.print(" Val: ");Serial.println(val);
}
if (aic_goToPage(page)) {
myWire->beginTransmission(AIC3206_I2C_ADDR);
myWire->write(reg);delay(10);
myWire->write(val);delay(10);
uint8_t result = myWire->endTransmission();
if (result == 0) return true;
else {
Serial.print("controlTLV320AIC3206: Received Error During writePage(): Error = ");
Serial.println(result);
}
}
return false;
}
bool AudioControlTLV320AIC3206::aic_goToPage(byte page) {
myWire->beginTransmission(AIC3206_I2C_ADDR);
myWire->write(0x00); delay(10);// page register //was delay(10) from BPF
myWire->write(page); delay(10);// go to page //was delay(10) from BPF
byte result = myWire->endTransmission();
if (result != 0) {
Serial.print("controlTLV320AIC3206: Received Error During goToPage(): Error = ");
Serial.println(result);
if (result == 2) {
// failed to transmit address
//return aic_goToPage(page);
} else if (result == 3) {
// failed to transmit data
//return aic_goToPage(page);
}
return false;
}
return true;
}
bool AudioControlTLV320AIC3206::updateInputBasedOnMicDetect(int setting) {
//read current mic detect setting
int curMicDetVal = readMicDetect();
if (curMicDetVal != prevMicDetVal) {
if (curMicDetVal) {
//enable the microphone input jack as our input
inputSelect(setting);
} else {
//switch back to the on-board mics
inputSelect(TYMPAN_INPUT_ON_BOARD_MIC);
}
}
prevMicDetVal = curMicDetVal;
return (bool)curMicDetVal;
}
bool AudioControlTLV320AIC3206::enableMicDetect(bool state) {
//page 0, register 67
byte curVal = aic_readPage(0,67);
byte newVal = curVal;
if (state) {
//enable
newVal = 0b111010111 & newVal; //set bits 4-2 to be 010 to set debounce to 64 msec
newVal = 0b10000000 | curVal; //force bit 1 to 1 to enable headset to detect
aic_writePage(0,67,newVal); //bit 7 (=1) enable headset detect, bits 4-2 (=010) debounce to 64ms
} else {
//disable
newVal = 0b01111111 & newVal; //force bit 7 to zero to disable headset detect
aic_writePage(0,67,newVal); //bit 7 (=1) enable headset detect, bits 4-2 (=010) debounce to 64ms
}
return state;
}
int AudioControlTLV320AIC3206::readMicDetect(void) {
//page 0, register 46, bit D4 (for D7-D0)
byte curVal = aic_readPage(0,46);
curVal = (curVal & 0b00010000);
curVal = (curVal != 0);
return curVal;
}
void computeFirstOrderHPCoeff_F32(float cutoff_Hz, float fs_Hz, float *coeff) {
//cutoff_Hz is the cutoff frequency in Hz
//fs_Hz is the sample rate in Hz
//First-order Butterworth IIR
//From https://www.dsprelated.com/showcode/199.php
const float pi = 3.141592653589793;
float T = 1.0f/fs_Hz; //sample period
float w = cutoff_Hz * 2.0 * pi;
float A = 1.0f / (tan( (w*T) / 2.0));
coeff[0] = A / (1.0 + A); // first b coefficient
coeff[1] = -coeff[0]; // second b coefficient
coeff[2] = (1.0 - A) / (1.0 + A); //second a coefficient (Matlab sign convention)
coeff[2] = -coeff[2]; //flip to be TI sign convention
}
#define CONST_2_31_m1 (2147483647) //2^31 - 1
void computeFirstOrderHPCoeff_i32(float cutoff_Hz, float fs_Hz, int32_t *coeff) {
float coeff_f32[3];
computeFirstOrderHPCoeff_F32(cutoff_Hz,fs_Hz,coeff_f32);
for (int i=0; i<3; i++) {
//scale
coeff_f32[i] *= (float)CONST_2_31_m1;
//truncate
coeff[i] = (int32_t)coeff_f32[i];
}
}
void AudioControlTLV320AIC3206::setHPFonADC(bool enable, float cutoff_Hz, float fs_Hz) { //fs_Hz is sample rate
//see TI application guide Section 2.3.3.1.10.1: http://www.ti.com/lit/an/slaa463b/slaa463b.pdf
uint32_t coeff[3];
if (enable) {
HP_cutoff_Hz = cutoff_Hz;
sample_rate_Hz = fs_Hz;
computeFirstOrderHPCoeff_i32(cutoff_Hz,fs_Hz,(int32_t *)coeff);
//Serial.print("enableHPFonADC: coefficients, Hex: ");
//Serial.print(coeff[0],HEX);
//Serial.print(", ");
//Serial.print(coeff[1],HEX);
//Serial.print(", ");
//Serial.print(coeff[2],HEX);
//Serial.println();
} else {
//disable
HP_cutoff_Hz = cutoff_Hz;
//see Table 5-4 in TI application guide Coeff C4, C5, C6
coeff[0] = 0x7FFFFFFF; coeff[1] = 0; coeff[2]=0;
}
setIIRCoeffOnADC(BOTH_CHAN, coeff); //needs twos-compliment
}
//set first-order IIR filter coefficients on ADC
void AudioControlTLV320AIC3206::setIIRCoeffOnADC(int chan, uint32_t *coeff) {
//power down the AIC to allow change in coefficients
uint32_t prev_state = aic_readPage(0x00,0x51);
aic_writePage(0x00,0x51,prev_state & (0b00111111)); //clear first two bits
if (chan == BOTH_CHAN) {
setIIRCoeffOnADC_Left(coeff);
setIIRCoeffOnADC_Right(coeff);
} else if (chan == LEFT_CHAN) {
setIIRCoeffOnADC_Left(coeff);
} else {
setIIRCoeffOnADC_Right(coeff);
}
//power the ADC back up
aic_writePage(0x00,0x51,prev_state); //clear first two bits
}
void AudioControlTLV320AIC3206::setIIRCoeffOnADC_Left(uint32_t *coeff) {
int page;
uint32_t c;
//See TI AIC3206 Application Guide, Table 2-13: http://www.ti.com/lit/an/slaa463b/slaa463b.pdf
//Coeff N0, Coeff C4
page = 8;
c = coeff[0];
aic_writePage(page,24,(uint8_t)(c>>24));
aic_writePage(page,25,(uint8_t)(c>>16));
aic_writePage(page,26,(uint8_t)(c>>8));
//int foo = aic_readPage(page,24); Serial.print("setIIRCoeffOnADC: first coefficient: "); Serial.println(foo);
//Coeff N1, Coeff C5
c = coeff[1];
aic_writePage(page,28,(uint8_t)(c>>24));
aic_writePage(page,29,(uint8_t)(c>>16));
aic_writePage(page,30,(uint8_t)(c>>8));
//Coeff N2, Coeff C6
c = coeff[2];
aic_writePage(page,32,(uint8_t)(c>>24));
aic_writePage(page,33,(uint8_t)(c>>16));
aic_writePage(page,34,(uint8_t)(c>>9));
}
void AudioControlTLV320AIC3206::setIIRCoeffOnADC_Right(uint32_t *coeff) {
int page;
uint32_t c;
//See TI AIC3206 Application Guide, Table 2-13: http://www.ti.com/lit/an/slaa463b/slaa463b.pdf
//Coeff N0, Coeff C36
page = 9;
c = coeff[0];
aic_writePage(page,32,(uint8_t)(c>>24));
aic_writePage(page,33,(uint8_t)(c>>16));
aic_writePage(page,34,(uint8_t)(c>>8));
//Coeff N1, Coeff C37
c = coeff[1];
aic_writePage(page,36,(uint8_t)(c>>24));
aic_writePage(page,37,(uint8_t)(c>>16));
aic_writePage(page,38,(uint8_t)(c>>8));
//Coeff N2, Coeff C39
c = coeff[2];;
aic_writePage(page,40,(uint8_t)(c>>24));
aic_writePage(page,41,(uint8_t)(c>>16));
aic_writePage(page,42,(uint8_t)(c>>8));
}