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[es8156] Add bits_per_sample validation, comment code (#13612)

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This commit is contained in:
Keith Burzinski
2026-01-28 22:03:50 -06:00
committed by GitHub
parent a5f60750c2
commit 084113926c
2 changed files with 64 additions and 1 deletions
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28
esphome/components/es8156/audio_dac.py
View File

@@ -2,11 +2,14 @@ import esphome.codegen as cg
from esphome.components import i2c
from esphome.components.audio_dac import AudioDac
import esphome.config_validation as cv
from esphome.const import CONF_ID
from esphome.const import CONF_BITS_PER_SAMPLE, CONF_ID
import esphome.final_validate as fv
CODEOWNERS = ["@kbx81"]
DEPENDENCIES = ["i2c"]
CONF_AUDIO_DAC = "audio_dac"
es8156_ns = cg.esphome_ns.namespace("es8156")
ES8156 = es8156_ns.class_("ES8156", AudioDac, cg.Component, i2c.I2CDevice)
@@ -21,6 +24,29 @@ CONFIG_SCHEMA = (
)
def _final_validate(config):
full_config = fv.full_config.get()
# Check all speaker configurations for ones that reference this es8156
speaker_configs = full_config.get("speaker", [])
for speaker_config in speaker_configs:
audio_dac_id = speaker_config.get(CONF_AUDIO_DAC)
if (
audio_dac_id is not None
and audio_dac_id == config[CONF_ID]
and (bits_per_sample := speaker_config.get(CONF_BITS_PER_SAMPLE))
is not None
and bits_per_sample > 24
):
raise cv.Invalid(
f"ES8156 does not support more than 24 bits per sample. "
f"The speaker referencing this audio_dac has bits_per_sample set to {bits_per_sample}."
)
FINAL_VALIDATE_SCHEMA = _final_validate
async def to_code(config):
var = cg.new_Pvariable(config[CONF_ID])
await cg.register_component(var, config)

37
esphome/components/es8156/es8156.cpp
View File

@@ -17,24 +17,61 @@ static const char *const TAG = "es8156";
}
void ES8156::setup() {
// REG02 MODE CONFIG 1: Enable software mode for I2C control of volume/mute
// Bit 2: SOFT_MODE_SEL=1 (software mode enabled)
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG02_SCLK_MODE, 0x04));
// Analog system configuration (active-low power down bits, active-high enables)
// REG20 ANALOG SYSTEM: Configure analog signal path
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG20_ANALOG_SYS1, 0x2A));
// REG21 ANALOG SYSTEM: VSEL=0x1C (bias level ~120%), normal VREF ramp speed
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG21_ANALOG_SYS2, 0x3C));
// REG22 ANALOG SYSTEM: Line out mode (HPSW=0), OUT_MUTE=0 (not muted)
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG22_ANALOG_SYS3, 0x00));
// REG24 ANALOG SYSTEM: Low power mode for VREFBUF, HPCOM, DACVRP; DAC normal power
// Bits 2:0 = 0x07: LPVREFBUF=1, LPHPCOM=1, LPDACVRP=1, LPDAC=0
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG24_ANALOG_LP, 0x07));
// REG23 ANALOG SYSTEM: Lowest bias (IBIAS_SW=0), VMIDLVL=VDDA/2, normal impedance
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG23_ANALOG_SYS4, 0x00));
// Timing and interface configuration
// REG0A/0B TIME CONTROL: Fast state machine transitions
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG0A_TIME_CONTROL1, 0x01));
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG0B_TIME_CONTROL2, 0x01));
// REG11 SDP INTERFACE CONFIG: Default I2S format (24-bit, I2S mode)
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG11_DAC_SDP, 0x00));
// REG19 EQ CONTROL 1: EQ disabled (EQ_ON=0), EQ_BAND_NUM=2
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG19_EQ_CONTROL1, 0x20));
// REG0D P2S CONTROL: Parallel-to-serial converter settings
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG0D_P2S_CONTROL, 0x14));
// REG09 MISC CONTROL 2: Default settings
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG09_MISC_CONTROL2, 0x00));
// REG18 MISC CONTROL 3: Stereo channel routing, no inversion
// Bits 5:4 CHN_CROSS: 0=L→L/R→R, 1=L to both, 2=R to both, 3=swap L/R
// Bits 3:2: LCH_INV/RCH_INV channel inversion
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG18_MISC_CONTROL3, 0x00));
// REG08 CLOCK OFF: Enable all internal clocks (0x3F = all clock gates open)
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG08_CLOCK_ON_OFF, 0x3F));
// REG00 RESET CONTROL: Reset sequence
// First: RST_DIG=1 (assert digital reset)
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG00_RESET, 0x02));
// Then: CSM_ON=1 (enable chip state machine), RST_DIG=1
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG00_RESET, 0x03));
// REG25 ANALOG SYSTEM: Power up analog blocks
// VMIDSEL=2 (normal VMID operation), PDN_ANA=0, ENREFR=0, ENHPCOM=0
// PDN_DACVREFGEN=0, PDN_VREFBUF=0, PDN_DAC=0 (all enabled)
ES8156_ERROR_FAILED(this->write_byte(ES8156_REG25_ANALOG_SYS5, 0x20));
}