adafruit-mirror/pico-mac
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

tweak headset gain to not be so loud.

Browse source
This commit is contained in:
ladyada 2025-03-28 10:08:21 -04:00
parent e98a74b69c
commit 34e184b5fe
1 changed files with 18 additions and 21 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
src/main.c
View file

@ -578,9 +578,9 @@ void Wire_begin() {
static void setup_i2s_dac() { static void setup_i2s_dac() {
gpio_init(22); gpio_init(22);
gpio_set_dir(22, true); gpio_set_dir(22, true);
gpio_put(22, true); // allow i2s to come out of reset gpio_put(22, true); // allow i2s to come out of reset
Wire_begin(); Wire_begin();
sleep_ms(1000); sleep_ms(1000);
@ -623,9 +623,9 @@ gpio_put(22, true); // allow i2s to come out of reset
modifyRegister(0x05, 0x80, 0x80); modifyRegister(0x05, 0x80, 0x80);
// Headset and GPIO Config // Headset and GPIO Config
setPage(1); setPage(1);
modifyRegister(0x2e, 0xFF, 0x0b); modifyRegister(0x2e, 0xFF, 0x0b);
setPage(0); setPage(0);
modifyRegister(0x43, 0x80, 0x80); // Headset Detect modifyRegister(0x43, 0x80, 0x80); // Headset Detect
modifyRegister(0x30, 0x80, 0x80); // INT1 Control modifyRegister(0x30, 0x80, 0x80); // INT1 Control
modifyRegister(0x33, 0x3C, 0x14); // GPIO1 modifyRegister(0x33, 0x3C, 0x14); // GPIO1
@ -642,27 +642,24 @@ setPage(0);
// DAC Volume Control // DAC Volume Control
setPage(0); setPage(0);
modifyRegister(0x40, 0x0C, 0x00); modifyRegister(0x40, 0x0C, 0x00);
writeRegister(0x41, 0x28); // Left DAC Vol writeRegister(0x41, 0x0); // Left DAC Vol, 0dB
writeRegister(0x42, 0x28); // Right DAC Vol writeRegister(0x42, 0x0); // Right DAC Vol, 0dB
// ADC Setup
modifyRegister(0x51, 0x80, 0x80);
modifyRegister(0x52, 0x80, 0x00);
writeRegister(0x53, 0x68); // ADC Volume
// Headphone and Speaker Setup // Headphone and Speaker Setup
setPage(1); setPage(1);
modifyRegister(0x1F, 0xC0, 0xC0); // HP Driver modifyRegister(0x1F, 0xC0, 0xC0); // HP Driver Powered
modifyRegister(0x28, 0x04, 0x04); // HP Left Gain
modifyRegister(0x29, 0x04, 0x04); // HP Right Gain modifyRegister(0x28, 0x04, 0x04); // HP Left not muted
writeRegister(0x24, 0x0A); // Left Analog HP modifyRegister(0x29, 0x04, 0x04); // HP Right not muted
writeRegister(0x25, 0x0A); // Right Analog HP
writeRegister(0x24, 50); // Left Analog HP, -14dB
writeRegister(0x25, 50); // Right Analog HP, -14dB
modifyRegister(0x28, 0x78, 0x40); // HP Left Gain modifyRegister(0x28, 0x78, 0x00); // HP Left Gain, 0 db
modifyRegister(0x29, 0x78, 0x40); // HP Right Gain modifyRegister(0x29, 0x78, 0x00); // HP Right Gain, 0 db
// Speaker Amp // Speaker Amp
modifyRegister(0x20, 0x80, 0x80); modifyRegister(0x20, 0x80, 0x00); // powered down for now, set to 0x80 to power up!
modifyRegister(0x2A, 0x04, 0x04); modifyRegister(0x2A, 0x04, 0x04);
modifyRegister(0x2A, 0x18, 0x08); modifyRegister(0x2A, 0x18, 0x08);
writeRegister(0x26, 0x0A); writeRegister(0x26, 0x0A);