cherry pick backport fix for cardputer

2026-10-22 03:02:08 +10:00 · 2026-05-18 23:24:32 +02:00
parent fc5556b8e6
commit 6199faacf1
3 changed files with 56 additions and 4 deletions
@@ -0,0 +1,94 @@
+#include "configuration.h"
+
+#ifdef M5STACK_CARDPUTER_ADV
+
+#include "AudioBoard.h"
+#include <Wire.h>
+
+DriverPins PinsAudioBoardES8311;
+AudioBoard board(AudioDriverES8311, PinsAudioBoardES8311);
+
+// PI4IOE5V6408 on the optional Cap LoRa-1262 (and Cap LoRa868).
+#define PI4IO_ADDR 0x43
+#define PI4IO_REG_IO_DIR 0x03
+#define PI4IO_REG_OUT_SET 0x05
+#define PI4IO_REG_OUT_H_IM 0x07
+
+static TwoWire *findLoraCapBus()
+{
+    TwoWire *candidates[] = {&Wire1, &Wire};
+    for (size_t i = 0; i < sizeof(candidates) / sizeof(candidates[0]); ++i) {
+        candidates[i]->beginTransmission(PI4IO_ADDR);
+        if (candidates[i]->endTransmission() == 0) {
+            return candidates[i];
+        }
+    }
+    return nullptr;
+}
+
+static bool pi4ioWrite(TwoWire *bus, uint8_t reg, uint8_t val)
+{
+    bus->beginTransmission(PI4IO_ADDR);
+    bus->write(reg);
+    bus->write(val);
+    uint8_t status = bus->endTransmission();
+    if (status != 0) {
+        LOG_DEBUG("PI4IO write reg=0x%02x val=0x%02x failed, I2C status=%u", reg, val, status);
+        return false;
+    }
+    return true;
+}
+
+static void initLoraCap()
+{
+    TwoWire *bus = findLoraCapBus();
+    if (!bus) {
+        LOG_ERROR("Cap LoRa-1262 not found");
+        return;
+    }
+    bool ok = pi4ioWrite(bus, PI4IO_REG_IO_DIR, 0b00000001);
+    ok = ok && pi4ioWrite(bus, PI4IO_REG_OUT_H_IM, 0b00000001);
+    ok = ok && pi4ioWrite(bus, PI4IO_REG_OUT_SET, 0b00000001);
+    if (!ok) {
+        LOG_ERROR("Antenna switch init failed");
+    }
+}
+
+// M5stack Cardputer ADV specific init
+
+void lateInitVariant()
+{
+    initLoraCap();
+
+    // AudioDriverLogger.begin(Serial, AudioDriverLogLevel::Debug);
+    //  I2C: function, scl, sda
+    PinsAudioBoardES8311.addI2C(PinFunction::CODEC, Wire);
+    // I2S: function, mclk, bck, ws, data_out, data_in
+    PinsAudioBoardES8311.addI2S(PinFunction::CODEC, DAC_I2S_MCLK, DAC_I2S_BCK, DAC_I2S_WS, DAC_I2S_DOUT, DAC_I2S_DIN);
+
+    // configure codec
+    CodecConfig cfg;
+    cfg.input_device = ADC_INPUT_LINE1;
+    cfg.output_device = DAC_OUTPUT_ALL;
+    cfg.i2s.bits = BIT_LENGTH_16BITS;
+    cfg.i2s.rate = RATE_44K;
+    board.begin(cfg);
+
+    // extra ES8311 init
+    auto es8311_write_reg = [](uint8_t reg, uint8_t val) {
+        Wire.beginTransmission(0x18); // ES8311 i2c address
+        Wire.write(reg);
+        Wire.write(val);
+        Wire.endTransmission();
+    };
+    es8311_write_reg(0x00, 0x80); // reset, power on
+    es8311_write_reg(0x01, 0xB5); // MCLK = BCLK
+    es8311_write_reg(0x02, 0x18); // CLOCK_MANAGER/ MULT_PRE=3
+    es8311_write_reg(0x0D, 0x01); // analog power up
+    es8311_write_reg(0x12, 0x00); // DAC power up
+    es8311_write_reg(0x13, 0x10); // enable HP drive
+    es8311_write_reg(0x32, 0xBF); // DAC volume (0dB)
+    es8311_write_reg(0x37, 0x08); // EQ bypass
+}
+
+#endif