1 files changed, 0 insertions, 87 deletions
diff --git a/main/gpio-expander.cpp b/main/gpio-expander.cpp
deleted file mode 100644
index 6b472d1c..00000000
--- a/main/gpio-expander.cpp
+++ /dev/null
@@ -1,87 +0,0 @@
-#include "gpio-expander.hpp"
-
-#include "i2c.hpp"
-
-#include <cstdint>
-
-namespace gay_ipod {
-
-GpioExpander::GpioExpander() {
-  ports_ = pack(kPortADefault, kPortBDefault);
-  // Read and write initial values on initialisation so that we do not have a
-  // strange partially-initialised state.
-  // TODO: log or abort if these error; it's really bad!
-  Write();
-  Read();
-}
-
-GpioExpander::~GpioExpander() {}
-
-void GpioExpander::with(std::function<void(GpioExpander&)> f) {
-  f(*this);
-  Write();
-}
-
-esp_err_t GpioExpander::Write() {
-  i2c_cmd_handle_t handle = i2c_cmd_link_create();
-  if (handle == NULL) {
-    return ESP_ERR_NO_MEM;
-  }
-
-  std::pair<uint8_t, uint8_t> ports_ab = unpack(ports());
-
-  I2CTransaction transaction;
-  transaction.start()
-      .write_addr(kPca8575Address, I2C_MASTER_WRITE)
-      .write_ack(ports_ab.first, ports_ab.second)
-      .stop();
-
-  return transaction.Execute();
-}
-
-esp_err_t GpioExpander::Read() {
-  uint8_t input_a, input_b;
-
-  I2CTransaction transaction;
-  transaction.start()
-      .write_addr(kPca8575Address, I2C_MASTER_READ)
-      .read(&input_a, I2C_MASTER_ACK)
-      .read(&input_b, I2C_MASTER_LAST_NACK)
-      .stop();
-
-  esp_err_t ret = transaction.Execute();
-  inputs_ = pack(input_a, input_b);
-  return ret;
-}
-
-void GpioExpander::set_pin(ChipSelect cs, bool value) {
-  set_pin((Pin)cs, value);
-}
-
-void GpioExpander::set_pin(Pin pin, bool value) {
-  if (value) {
-    ports_ |= (1 << pin);
-  } else {
-    ports_ &= ~(1 << pin);
-  }
-}
-
-bool GpioExpander::get_input(Pin pin) const {
-  return (inputs_ & (1 << pin)) > 0;
-}
-
-GpioExpander::SpiLock GpioExpander::AcquireSpiBus(ChipSelect cs) {
-  // TODO: also spi_device_acquire_bus?
-  return SpiLock(*this, cs);
-}
-
-GpioExpander::SpiLock::SpiLock(GpioExpander& gpio, ChipSelect cs)
-    : lock_(gpio.cs_mutex_), gpio_(gpio), cs_(cs) {
-  gpio_.with([&](auto& gpio) { gpio.set_pin(cs_, 0); });
-}
-
-GpioExpander::SpiLock::~SpiLock() {
-  gpio_.with([&](auto& gpio) { gpio.set_pin(cs_, 1); });
-}
-
-}  // namespace gay_ipod