Thanks to visit codestin.com
Credit goes to github.com

Skip to content

ES8388 init optimizations and fixes #30

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
ewoudwijma merged 1 commit into from
Apr 5, 2023
Merged

ES8388 init optimizations and fixes #30

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
50 changes: 18 additions & 32 deletions usermods/audioreactive/audio_source.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -519,42 +519,28 @@ class ES8388Source : public I2SSource {
}

void _es8388InitAdc() {
// This is by no means 100% figured but it's working for line-in
// with a little too much noise for my liking...
// https://dl.radxa.com/rock2/docs/hw/ds/ES8388%20user%20Guide.pdf Section 10.1
// https://docs.google.com/spreadsheets/d/1CN3MvhkcPVESuxKyx1xRYqfUit5hOdsG45St9BCUm-g/edit#gid=0 generally
_es8388I2cBegin();
_es8388I2cWrite(0x08,0x00); // I2S to slave
_es8388I2cWrite(0x02,0xf3); // Power down DEM and STM
_es8388I2cWrite(0x2b,0x80); // Set same LRCK
_es8388I2cWrite(0x00,0x05); // Set chip to Play & Record Mode
_es8388I2cWrite(0x01,0x40); // Power up Analog and lbias ... These 5 (to here) need to be done in order
_es8388I2cWrite(0x03,0x00); // Power up ADC, Analog Input, and Mic Bias
_es8388I2cWrite(0x04,0x3C); // ** In guide, not in working example tho. **
_es8388I2cWrite(0x0a,0x50); // Use Lin2/Rin2 for ADC input
_es8388I2cWrite(0x09,0x00); // Select Analog Input PGA Gain for ADC to 0dB **
_es8388I2cWrite(0x0c,0x0c); // I2S format, 24-bit
_es8388I2cWrite(0x0d,0x02); // Set MCLK/LRCK ratio to 256
_es8388I2cWrite(0x10,0x00); // Set ADC digital volume attenuation to 0dB (left)
_es8388I2cWrite(0x11,0x00); // Set ADC digital volume attenuation to 0dB (right)
_es8388I2cWrite(0x17,0x18); // Set format for DAC (I2S, 24bit)
_es8388I2cWrite(0x18,0x02); // Set DAC MCLK/LRCK ratio to 256
_es8388I2cWrite(0x1a,0x00); // DAC Volume attenuation 0dB (left)
_es8388I2cWrite(0x1b,0x00); // DAC Volume attenuation 0dB (right)
_es8388I2cWrite(0x2e,0x00); // LOUT1 volume - 00 = -45dB
_es8388I2cWrite(0x2f,0x00); // ROUT1 volume - 00 = -45dB
_es8388I2cWrite(0x0C,0b00000001); // ADC digital format - I2S + Left Justified
_es8388I2cWrite(0x17,0b00000010); // DAC digital format - I2S + Left Justified
_es8388I2cWrite(0x02,0x00); // Power up DEM and STM
// end of guide init ^^^
_es8388I2cWrite(0x02,0b01000000); // Power. Guide says it's only 6 bits but that 1 means "turn on sometthing for line-out voltage"
_es8388I2cWrite(0x04,0x0c); // LOUT2 an ROUT2 powered
// Sets ADC to around what AudioReactive expects, and loops line-in to line-out/headphone for monitoring.
_es8388I2cBegin();
_es8388I2cWrite(0x08,0x00); // I2S to slave
_es8388I2cWrite(0x02,0xf3); // Power down DEM and STM
_es8388I2cWrite(0x2b,0x80); // Set same LRCK
_es8388I2cWrite(0x00,0x05); // Set chip to Play & Record Mode
_es8388I2cWrite(0x0d,0x02); // Set MCLK/LRCK ratio to 256
_es8388I2cWrite(0x01,0x40); // Power up analog and lbias
_es8388I2cWrite(0x03,0x00); // Power up ADC, Analog Input, and Mic Bias
_es8388I2cWrite(0x0a,0x50); // Use Lin2/Rin2 for ADC input ("line-in")
_es8388I2cWrite(0x09,0x00); // Select Analog Input PGA Gain for ADC to 0dB (L+R)
_es8388I2cWrite(0x10,0b01000000); // Set ADC digital volume attenuation to -32dB (left)
_es8388I2cWrite(0x11,0b01000000); // Set ADC digital volume attenuation to -32dB (right)
_es8388I2cWrite(0x04,0x0c); // Turn on LOUT2 and ROUT2 power
_es8388I2cWrite(0x02,0b01000000); // Power up DEM and STM and undocumented bit for "turn on line-out amp"
_es8388I2cWrite(0x26,0x09); // Mixer - route LIN2/RIN2 to output
_es8388I2cWrite(0x27,0b01010000); // Mixer - route LIN to left mixer, 0dB gain
_es8388I2cWrite(0x2a,0b01010000); // Mixer - route RIN to right mixer, 0dB gain
_es8388I2cWrite(0x30,0b00011110); // LOUT2VOL - 0 = -45dB, 0b00011110 = +0dB
_es8388I2cWrite(0x31,0b00011110); // ROUT2VOL - 0 = -45dB, 0b00011110 = +0dB
_es8388I2cWrite(0x26,0x09); // Mixer
_es8388I2cWrite(0x27,0x50); // Mixer
_es8388I2cWrite(0x2a,0x50); // Mixer
_es8388I2cWrite(0x03,0x00); // Power
}

public:
Expand Down