diff --git a/usermods/audioreactive/audio_reactive.h b/usermods/audioreactive/audio_reactive.h index 2de8408716..f7c91594c7 100644 --- a/usermods/audioreactive/audio_reactive.h +++ b/usermods/audioreactive/audio_reactive.h @@ -2010,6 +2010,19 @@ class AudioReactive : public Usermod { if (i2c_sda >= 0) sdaPin = -1; // -1 = use global if (i2c_scl >= 0) sclPin = -1; + if (audioSource) audioSource->initialize(i2swsPin, i2ssdPin, i2sckPin, mclkPin); + break; + case 8: + DEBUGSR_PRINTLN(F("AR: AC101 Source (Line-In)")); + audioSource = new AC101Source(SAMPLE_RATE, BLOCK_SIZE, 1.0f); + //useInputFilter = 0; // to disable low-cut software filtering and restore previous behaviour + delay(100); + // WLEDMM align global pins + if ((sdaPin >= 0) && (i2c_sda < 0)) i2c_sda = sdaPin; // copy usermod prefs into globals (if globals not defined) + if ((sclPin >= 0) && (i2c_scl < 0)) i2c_scl = sclPin; + if (i2c_sda >= 0) sdaPin = -1; // -1 = use global + if (i2c_scl >= 0) sclPin = -1; + if (audioSource) audioSource->initialize(i2swsPin, i2ssdPin, i2sckPin, mclkPin); break; @@ -2911,6 +2924,11 @@ class AudioReactive : public Usermod { #else oappend(SET_F("addOption(dd,'WM8978 ☾',7);")); #endif + #if SR_DMTYPE==8 + oappend(SET_F("addOption(dd,'AC101 ☾ (⎌)',8);")); + #else + oappend(SET_F("addOption(dd,'AC101 ☾',8);")); + #endif #ifdef SR_SQUELCH oappend(SET_F("addInfo(ux+':config:squelch',1,'⎌ ")); oappendi(SR_SQUELCH); oappend("');"); // 0 is field type, 1 is actual field #endif diff --git a/usermods/audioreactive/audio_source.h b/usermods/audioreactive/audio_source.h index cf3e3b745a..d7c0478c5d 100644 --- a/usermods/audioreactive/audio_source.h +++ b/usermods/audioreactive/audio_source.h @@ -736,6 +736,109 @@ class WM8978Source : public I2SSource { }; +class AC101Source : public I2SSource { + private: + // I2C initialization functions for WM8978 + void _ac101I2cBegin() { + Wire.setClock(400000); + } + + void _ac101I2cWrite(uint8_t reg_addr, uint16_t val) { + #ifndef AC101_ADDR + #define AC101_ADDR 0x1A + #endif + char send_buff[3]; + send_buff[0] = reg_addr; + send_buff[1] = uint8_t((val >> 8) & 0xff); + send_buff[2] = uint8_t(val & 0xff); + Wire.beginTransmission(AC101_ADDR); + Wire.write((const uint8_t*)send_buff, 3); + uint8_t i2cErr = Wire.endTransmission(); // i2cErr == 0 means OK + if (i2cErr != 0) { + DEBUGSR_PRINTF("AR: AC101 I2C write failed with error=%d (addr=0x%X, reg 0x%X, val 0x%X).\n", i2cErr, AC101_ADDR, reg_addr, val); + } + } + + void _ac101InitAdc() { + // https://files.seeedstudio.com/wiki/ReSpeaker_6-Mics_Circular_Array_kit_for_Raspberry_Pi/reg/AC101_User_Manual_v1.1.pdf + // This supports mostly the older AI Thinkier AudioKit A1S that has an AC101 chip + // Newer versions use the ES3833 chip - which we also support. + + _ac101I2cBegin(); + + #define CHIP_AUDIO_RS 0x00 + #define SYSCLK_CTRL 0x03 + #define MOD_CLK_ENA 0x04 + #define MOD_RST_CTRL 0x05 + #define I2S_SR_CTRL 0x06 + #define I2S1LCK_CTRL 0x10 + #define I2S1_SDOUT_CTRL 0x11 + #define I2S1_MXR_SRC 0x13 + #define ADC_DIG_CTRL 0x40 + #define ADC_APC_CTRL 0x50 + #define ADC_SRC 0x51 + #define ADC_SRCBST_CTRL 0x52 + #define OMIXER_DACA_CTRL 0x53 + #define OMIXER_SR 0x54 + #define HPOUT_CTRL 0x56 + + _ac101I2cWrite(CHIP_AUDIO_RS, 0x123); // I think anything written here is a reset as 0x123 is kinda suss. + + delay(100); + + _ac101I2cWrite(SYSCLK_CTRL, 0b0000100000001000); // System Clock is I2S MCLK + _ac101I2cWrite(MOD_CLK_ENA, 0b1000000000001000); // I2S and ADC Clock Enable + _ac101I2cWrite(MOD_RST_CTRL, 0b1000000000001000); // I2S and ADC Clock Enable + _ac101I2cWrite(I2S_SR_CTRL, 0b0100000000000000); // set to 22050hz just in case + _ac101I2cWrite(I2S1LCK_CTRL, 0b1000000000110000); // set I2S slave mode, 24-bit word size + _ac101I2cWrite(I2S1_SDOUT_CTRL, 0b1100000000000000); // I2S enable Left/Right channels + _ac101I2cWrite(I2S1_MXR_SRC, 0b0010001000000000); // I2S digital Mixer, ADC L/R data + _ac101I2cWrite(ADC_SRCBST_CTRL, 0b0000000000000100); // mute all boosts. last 3 bits are reserved/default + _ac101I2cWrite(OMIXER_SR, 0b0000010000001000); // Line L/R to output mixer + _ac101I2cWrite(ADC_SRC, 0b0000010000001000); // Line L/R to ADC + _ac101I2cWrite(ADC_DIG_CTRL, 0b1000000000000000); // Enable ADC + _ac101I2cWrite(ADC_APC_CTRL, 0b1011100100000000); // ADC L/R enabled, 0dB gain + _ac101I2cWrite(OMIXER_DACA_CTRL, 0b0011111110000000); // L/R Analog Output Mixer enabled, headphone DC offset default + _ac101I2cWrite(HPOUT_CTRL, 0b1111101111110001); // Headphone out from Analog Mixer stage, no reduction in volume + + } + + public: + AC101Source(SRate_t sampleRate, int blockSize, float sampleScale = 1.0f, bool i2sMaster=true) : + I2SSource(sampleRate, blockSize, sampleScale, i2sMaster) { + _config.channel_format = I2S_CHANNEL_FMT_ONLY_LEFT; + }; + + void initialize(int8_t i2swsPin, int8_t i2ssdPin, int8_t i2sckPin, int8_t mclkPin) { + DEBUGSR_PRINTLN("AC101Source:: initialize();"); + + // if ((i2sckPin < 0) || (mclkPin < 0)) { // WLEDMM not sure if this check is needed here, too + // ERRORSR_PRINTF("\nAR: invalid I2S WM8978 pin: SCK=%d, MCLK=%d\n", i2sckPin, mclkPin); + // return; + // } + // BUG: "use global I2C pins" are valid as -1, and -1 is seen as invalid here. + // Workaround: Set I2C pins here, which will also set them globally. + // Bug also exists in ES7243. + if ((i2c_sda < 0) || (i2c_scl < 0)) { // check that global I2C pins are not "undefined" + ERRORSR_PRINTF("\nAR: invalid AC101 global I2C pins: SDA=%d, SCL=%d\n", i2c_sda, i2c_scl); + return; + } + if (!pinManager.joinWire(i2c_sda, i2c_scl)) { // WLEDMM specific: start I2C with globally defined pins + ERRORSR_PRINTF("\nAR: failed to join I2C bus with SDA=%d, SCL=%d\n", i2c_sda, i2c_scl); + return; + } + + // First route mclk, then configure ADC over I2C, then configure I2S + _ac101InitAdc(); + I2SSource::initialize(i2swsPin, i2ssdPin, i2sckPin, mclkPin); + } + + void deinitialize() { + I2SSource::deinitialize(); + } + +}; + #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(4, 2, 0) #if !defined(SOC_I2S_SUPPORTS_ADC) && !defined(SOC_I2S_SUPPORTS_ADC_DAC) #warning this MCU does not support analog sound input