Use underscores instead of dashes in filenames consistently

1 files changed, 0 insertions, 208 deletions

diff --git a/src/drivers/include/gpio-expander.hpp b/src/drivers/include/gpio-expander.hpp
deleted file mode 100644
index 7ae0f107..00000000
--- a/src/drivers/include/gpio-expander.hpp
+++ /dev/null
@@ -1,208 +0,0 @@
-#pragma once
-
-#include <stdint.h>
-#include <atomic>
-#include <functional>
-#include <mutex>
-#include <tuple>
-#include <utility>
-
-#include "driver/i2c.h"
-#include "esp_check.h"
-#include "esp_err.h"
-#include "esp_log.h"
-#include "freertos/FreeRTOS.h"
-
-namespace drivers {
-
-/**
- * Wrapper for interfacing with the PCA8575 GPIO expander. Includes basic
- * low-level pin setting methods, as well as higher level convenience functions
- * for reading, writing, and atomically interacting with the SPI chip select
- * pins.
- *
- * Each method of this class can be called safely from any thread, and all
- * updates are guaranteed to be atomic. Any access to chip select related pins
- * should be done whilst holding `cs_lock` (preferably via the helper methods).
- */
-class GpioExpander {
- public:
-  GpioExpander();
-  ~GpioExpander();
-
-  static const uint8_t kPca8575Address = 0x20;
-  static const uint8_t kPca8575Timeout = 100 / portTICK_RATE_MS;
-
-  // Port A:
-  // 0 - audio power enable
-  // 1 - usb interface power enable
-  // 2 - display power enable
-  // 3 - sd card power enable
-  // 4 - charge power ok (active low)
-  // 5 - sd mux switch
-  // 6 - sd chip select
-  // 7 - display chip select
-  // All power switches low, chip selects high, active-low charge power high
-  static const uint8_t kPortADefault = 0b11010001;
-
-  // Port B:
-  // 0 - 3.5mm jack detect (active low)
-  // 1 - dac soft mute switch
-  // 2 - GPIO
-  // 3 - GPIO
-  // 4 - GPIO
-  // 5 - GPIO
-  // 6 - GPIO
-  // 7 - GPIO
-  // DAC mute output low, everything else is active-low inputs.
-  static const uint8_t kPortBDefault = 0b11111111;
-
-  /*
-   * Convenience mehod for packing the port a and b bytes into a single 16 bit
-   * value.
-   */
-  static uint16_t pack(uint8_t a, uint8_t b) { return ((uint16_t)b) << 8 | a; }
-
-  /*
-   * Convenience mehod for unpacking the result of `pack` back into two single
-   * byte port datas.
-   */
-  static std::pair<uint8_t, uint8_t> unpack(uint16_t ba) {
-    return std::pair((uint8_t)ba, (uint8_t)(ba >> 8));
-  }
-
-  /*
-   * Convenience function for running some arbitrary pin writing code, then
-   * flushing a `Write()` to the expander. Example usage:
-   *
-   * ```
-   * gpio_.with([&](auto& gpio) {
-   *	gpio.set_pin(AUDIO_POWER_ENABLE, true);
-   * });
-   * ```
-   */
-  void with(std::function<void(GpioExpander&)> f);
-
-  /**
-   * Sets the ports on the GPIO expander to the values currently represented
-   * in `ports`.
-   */
-  esp_err_t Write(void);
-
-  /**
-   * Reads from the GPIO expander, populating `inputs` with the most recent
-   * values.
-   */
-  esp_err_t Read(void);
-
-  /* Maps each pin of the expander to its number in a `pack`ed uint16. */
-  enum Pin {
-    // Port A
-    AUDIO_POWER_ENABLE = 0,
-    USB_INTERFACE_POWER_ENABLE = 1,
-    DISPLAY_POWER_ENABLE = 2,
-    SD_CARD_POWER_ENABLE = 3,
-    CHARGE_POWER_OK = 4,  // Active-low input
-    SD_MUX_SWITCH = 5,
-    SD_CHIP_SELECT = 6,
-    DISPLAY_CHIP_SELECT = 7,
-
-    // Port B
-    PHONE_DETECT = 8,  // Active-high input
-    DAC_MUTE = 9,
-    GPIO_1 = 10,
-    GPIO_2 = 11,
-    GPIO_3 = 12,
-    GPIO_4 = 13,
-    GPIO_5 = 14,
-    GPIO_6 = 15,
-  };
-
-  /* Pins whose access should be guarded by `cs_lock`. */
-  enum ChipSelect {
-    SD_CARD = SD_CHIP_SELECT,
-    DISPLAY = DISPLAY_CHIP_SELECT,
-  };
-
-  /* Nicer value names for use with the SD_MUX_SWITCH pin. */
-  enum SdController {
-    SD_MUX_ESP = 0,
-    SD_MUX_USB = 1,
-  };
-
-  /**
-   * Returns the current driven status of each of the ports. The first byte is
-   * port a, and the second byte is port b.
-   */
-  std::atomic<uint16_t>& ports() { return ports_; }
-
-  /*
-   * Sets a single specific pin to the given value. `true` corresponds to
-   * HIGH, and `false` corresponds to LOW.
-   *
-   * Calls to this method will be buffered in memory until a call to `Write()`
-   * is made.
-   */
-  void set_pin(Pin pin, bool value);
-  void set_pin(ChipSelect cs, bool value);
-
-  /**
-   * Returns the input status of each of the ports. The first byte is port a,
-   * and the second byte is port b.
-   */
-  const std::atomic<uint16_t>& inputs() const { return inputs_; }
-
-  /* Returns the most recently cached value of the given pin. Only valid for
-   * pins used as inputs; to check what value we're driving a pin, use
-   * `ports()`.
-   */
-  bool get_input(Pin pin) const;
-
-  /* Returns the mutex that must be held whilst pulling a CS pin low. */
-  std::mutex& cs_mutex() { return cs_mutex_; }
-
-  /*
-   * Helper class containing an active `cs_mutex` lock. When an instance of
-   * this class is destroyed (usually by falling out of scope), the associated
-   * CS pin will be driven high before the lock is released.
-   */
-  class SpiLock {
-   public:
-    SpiLock(GpioExpander& gpio, ChipSelect cs);
-    ~SpiLock();
-
-    SpiLock(const SpiLock&) = delete;
-
-   private:
-    std::scoped_lock<std::mutex> lock_;
-    GpioExpander& gpio_;
-    ChipSelect cs_;
-  };
-
-  /*
-   * Pulls the given CS pin low to signal that we are about to communicate
-   * with a particular device, after acquiring a lock on `cs_mutex`. The
-   * recommended way to safely interact with devices on the SPI bus is to have
-   * a self-contained block like so:
-   *
-   * ```
-   * {
-   *	auto lock = AcquireSpiBus(WHATEVER);
-   *  // Do some cool things here.
-   * }
-   * ```
-   */
-  SpiLock AcquireSpiBus(ChipSelect cs);
-
-  // Not copyable or movable. There should usually only ever be once instance
-  // of this class, and that instance will likely have a static lifetime.
-  GpioExpander(const GpioExpander&) = delete;
-  GpioExpander& operator=(const GpioExpander&) = delete;
-
- private:
-  std::mutex cs_mutex_;
-  std::atomic<uint16_t> ports_;
-  std::atomic<uint16_t> inputs_;
-};
-
-}  // namespace drivers