Split driver-y things into a separate component

1 files changed, 0 insertions, 106 deletions

diff --git a/main/dac.cpp b/main/dac.cpp
deleted file mode 100644
index d74e9523..00000000
--- a/main/dac.cpp
+++ /dev/null
@@ -1,106 +0,0 @@
-#include "dac.hpp"
-
-#include "gpio-expander.hpp"
-#include "i2c.hpp"
-
-#include <cstdint>
-
-#include "assert.h"
-#include "driver/i2c.h"
-#include "esp_err.h"
-#include "esp_log.h"
-#include "hal/i2c_types.h"
-
-namespace gay_ipod {
-
-static const char* kTag = "AUDIODAC";
-static const uint8_t kPcm5122Address = 0x4C;
-static const uint8_t kPcm5122Timeout = 100 / portTICK_RATE_MS;
-
-auto AudioDac::create(GpioExpander* expander)
-    -> cpp::result<std::unique_ptr<AudioDac>, Error> {
-  std::unique_ptr<AudioDac> dac = std::make_unique<AudioDac>(expander);
-
-  bool is_booted = dac->WaitForPowerState(
-      [](bool booted, PowerState state) { return booted; });
-  if (!is_booted) {
-    ESP_LOGE(kTag, "Timed out waiting for boot");
-    return cpp::fail(Error::FAILED_TO_BOOT);
-  }
-
-  dac->WriteRegister(Register::DE_EMPHASIS, 1 << 4);
-  dac->WriteVolume(100);
-
-  bool is_configured =
-      dac->WaitForPowerState([](bool booted, PowerState state) {
-        return state == WAIT_FOR_CP || state == RAMP_UP || state == RUN ||
-               state == STANDBY;
-      });
-  if (!is_configured) {
-    return cpp::fail(Error::FAILED_TO_CONFIGURE);
-  }
-
-  return dac;
-}
-
-AudioDac::AudioDac(GpioExpander* gpio) {
-  this->gpio_ = gpio;
-};
-
-AudioDac::~AudioDac(){
-    // TODO: reset stuff like de-emphasis? Reboot the whole dac? Need to think
-    // about this.
-};
-
-void AudioDac::WriteVolume(uint8_t volume) {
-  WriteRegister(Register::DIGITAL_VOLUME_L, volume);
-  WriteRegister(Register::DIGITAL_VOLUME_R, volume);
-}
-
-std::pair<bool, AudioDac::PowerState> AudioDac::ReadPowerState() {
-  uint8_t result = 0;
-
-  I2CTransaction transaction;
-  transaction.start()
-      .write_addr(kPcm5122Address, I2C_MASTER_WRITE)
-      .write_ack(DSP_BOOT_POWER_STATE)
-      .start()
-      .write_addr(kPcm5122Address, I2C_MASTER_READ)
-      .read(&result, I2C_MASTER_NACK)
-      .stop();
-
-  ESP_ERROR_CHECK(transaction.Execute());
-
-  bool is_booted = result >> 7;
-  PowerState detail = (PowerState)(result & 0b1111);
-  return std::pair(is_booted, detail);
-}
-
-bool AudioDac::WaitForPowerState(
-    std::function<bool(bool, AudioDac::PowerState)> predicate) {
-  bool has_matched = false;
-  for (int i = 0; i < 10; i++) {
-    std::pair<bool, PowerState> result = ReadPowerState();
-    has_matched = predicate(result.first, result.second);
-    if (has_matched) {
-      break;
-    } else {
-      ESP_LOGI(kTag, "Waiting for power state (was %d %x)", result.first,
-               (uint8_t)result.second);
-      vTaskDelay(pdMS_TO_TICKS(1));
-    }
-  }
-  return has_matched;
-}
-
-void AudioDac::WriteRegister(Register reg, uint8_t val) {
-  I2CTransaction transaction;
-  transaction.start()
-      .write_addr(kPcm5122Address, I2C_MASTER_WRITE)
-      .write_ack(reg, val)
-      .stop();
-  // TODO: Retry once?
-  ESP_ERROR_CHECK(transaction.Execute());
-}
-
-}  // namespace gay_ipod