Add Dish Network protocol (#2117)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

esphome/components/remote_base/dish_protocol.cpp

@@ -0,0 +1,92 @@
+#include "dish_protocol.h"
+#include "esphome/core/log.h"
+
+namespace esphome {
+namespace remote_base {
+
+static const char *const TAG = "remote.dish";
+
+static const uint32_t HEADER_HIGH_US = 400;
+static const uint32_t HEADER_LOW_US = 6100;
+static const uint32_t BIT_HIGH_US = 400;
+static const uint32_t BIT_ONE_LOW_US = 1700;
+static const uint32_t BIT_ZERO_LOW_US = 2800;
+
+void DishProtocol::encode(RemoteTransmitData *dst, const DishData &data) {
+  dst->reserve(138);
+  dst->set_carrier_frequency(57600);
+
+  // HEADER
+  dst->item(HEADER_HIGH_US, HEADER_LOW_US);
+
+  //  Typically a DISH device needs to get a command a total of
+  //  at least 4 times to accept it.
+  for (uint i = 0; i < 4; i++) {
+    // COMMAND (function, in MSB)
+    for (uint8_t mask = 1UL << 5; mask; mask >>= 1) {
+      if (data.command & mask)
+        dst->item(BIT_HIGH_US, BIT_ONE_LOW_US);
+      else
+        dst->item(BIT_HIGH_US, BIT_ZERO_LOW_US);
+    }
+
+    // ADDRESS (unit code, in LSB)
+    for (uint8_t mask = 1UL; mask < 1UL << 4; mask <<= 1) {
+      if ((data.address - 1) & mask)
+        dst->item(BIT_HIGH_US, BIT_ONE_LOW_US);
+      else
+        dst->item(BIT_HIGH_US, BIT_ZERO_LOW_US);
+    }
+    // PADDING
+    for (uint j = 0; j < 6; j++)
+      dst->item(BIT_HIGH_US, BIT_ZERO_LOW_US);
+
+    // FOOTER
+    dst->item(HEADER_HIGH_US, HEADER_LOW_US);
+  }
+}
+optional<DishData> DishProtocol::decode(RemoteReceiveData src) {
+  DishData data{
+      .address = 0,
+      .command = 0,
+  };
+  if (!src.expect_item(HEADER_HIGH_US, HEADER_LOW_US))
+    return {};
+
+  for (uint8_t mask = 1UL << 5; mask != 0; mask >>= 1) {
+    if (src.expect_item(BIT_HIGH_US, BIT_ONE_LOW_US)) {
+      data.command |= mask;
+    } else if (src.expect_item(BIT_HIGH_US, BIT_ZERO_LOW_US)) {
+      data.command &= ~mask;
+    } else {
+      return {};
+    }
+  }
+
+  for (uint8_t mask = 1UL; mask < 1UL << 5; mask <<= 1) {
+    if (src.expect_item(BIT_HIGH_US, BIT_ONE_LOW_US)) {
+      data.address |= mask;
+    } else if (src.expect_item(BIT_HIGH_US, BIT_ZERO_LOW_US)) {
+      data.address &= ~mask;
+    } else {
+      return {};
+    }
+  }
+  for (uint j = 0; j < 6; j++) {
+    if (!src.expect_item(BIT_HIGH_US, BIT_ZERO_LOW_US)) {
+      return {};
+    }
+  }
+  data.address++;
+
+  src.expect_item(HEADER_HIGH_US, HEADER_LOW_US);
+
+  return data;
+}
+
+void DishProtocol::dump(const DishData &data) {
+  ESP_LOGD(TAG, "Received Dish: address=0x%02X, command=0x%02X", data.address, data.command);
+}
+
+}  // namespace remote_base
+}  // namespace esphome