GC9A01 Display driver support (#165)

* feat: Initial attempt of GC9A01 display driver

* fix: Fixed missing mirror/swap functionality

* refactor: Added send_command overload

* refactor: Clang format

* docs: Removed inapplicable comments

* fix: Fixed issue with wrong default mirror/swap settings

* feat: Added Smartknob-HA example using the GC9A01

Author: abrondijk

Diff for: components/display_drivers/example/README.md

@@ -12,6 +12,7 @@ This example can be configured to run on the following dev boards:
 * ESP32-WROVER-Kit
 * TTGO T-Display
 * ESP32-S3-BOX
+* Smartknob-HA
 
 ### Configure the project
 
@@ -20,7 +21,7 @@ idf.py menuconfig
 ```
 
 When configuring the project, select the `Display Drivers Example Configuration`
-value that matches the board you've selected (must be one of the 3 boards
+value that matches the board you've selected (must be one of the 4 boards
 mentioned above.)
 
 ### Build and Flash

Diff for: components/display_drivers/example/main/Kconfig.projbuild

@@ -11,6 +11,8 @@ menu "Display Drivers Example Configuration"
             bool "TTGO T-DISPLAY"
         config HARDWARE_BOX
             bool "ESP BOX"
+        config SMARTKNOB_HA
+            bool "SMARTKNOB-HA"
     endchoice
 
 endmenu

Diff for: components/display_drivers/example/main/display_drivers_example.cpp

@@ -16,6 +16,9 @@ static constexpr int DC_PIN_NUM = 16;
 #elif CONFIG_HARDWARE_BOX
 #include "st7789.hpp"
 static constexpr int DC_PIN_NUM = 4;
+#elif CONFIG_SMARTKNOB_HA
+#include "gc9a01.hpp"
+static constexpr int DC_PIN_NUM = 16;
 #else
 #error "Misconfigured hardware!"
 #endif
@@ -118,29 +121,32 @@ void IRAM_ATTR lcd_send_lines(int xs, int ys, int xe, int ye, const uint8_t *dat
   size_t length = (xe - xs + 1) * (ye - ys + 1) * 2;
 #if CONFIG_HARDWARE_WROVER_KIT
   trans[0].tx_data[0] = (uint8_t)espp::Ili9341::Command::caset;
-#endif
-#if CONFIG_HARDWARE_TTGO || CONFIG_HARDWARE_BOX
+#elif CONFIG_HARDWARE_TTGO || CONFIG_HARDWARE_BOX
   trans[0].tx_data[0] = (uint8_t)espp::St7789::Command::caset;
+#elif CONFIG_SMARTKNOB_HA
+  trans[0].tx_data[0] = (uint8_t)espp::Gc9a01::Command::caset;
 #endif
   trans[1].tx_data[0] = (xs) >> 8;
   trans[1].tx_data[1] = (xs)&0xff;
   trans[1].tx_data[2] = (xe) >> 8;
   trans[1].tx_data[3] = (xe)&0xff;
 #if CONFIG_HARDWARE_WROVER_KIT
   trans[2].tx_data[0] = (uint8_t)espp::Ili9341::Command::raset;
-#endif
-#if CONFIG_HARDWARE_TTGO || CONFIG_HARDWARE_BOX
+#elif CONFIG_HARDWARE_TTGO || CONFIG_HARDWARE_BOX
   trans[2].tx_data[0] = (uint8_t)espp::St7789::Command::raset;
+#elif CONFIG_SMARTKNOB_HA
+  trans[2].tx_data[0] = (uint8_t)espp::Gc9a01::Command::raset;
 #endif
   trans[3].tx_data[0] = (ys) >> 8;
   trans[3].tx_data[1] = (ys)&0xff;
   trans[3].tx_data[2] = (ye) >> 8;
   trans[3].tx_data[3] = (ye)&0xff;
 #if CONFIG_HARDWARE_WROVER_KIT
   trans[4].tx_data[0] = (uint8_t)espp::Ili9341::Command::ramwr;
-#endif
-#if CONFIG_HARDWARE_TTGO || CONFIG_HARDWARE_BOX
+#elif CONFIG_HARDWARE_TTGO || CONFIG_HARDWARE_BOX
   trans[4].tx_data[0] = (uint8_t)espp::St7789::Command::ramwr;
+#elif CONFIG_SMARTKNOB_HA
+  trans[4].tx_data[0] = (uint8_t)espp::Gc9a01::Command::ramwr;
 #endif
   trans[5].tx_buffer = data;
   trans[5].length = length * 8;
@@ -199,8 +205,7 @@ extern "C" void app_main(void) {
   using DisplayDriver = espp::Ili9341;
   auto rotation = espp::Display::Rotation::LANDSCAPE;
   //! [wrover_kit_config example]
-#endif
-#if CONFIG_HARDWARE_TTGO
+#elif CONFIG_HARDWARE_TTGO
   //! [ttgo_config example]
   static constexpr std::string_view dev_kit = "TTGO T-Display";
   int clock_speed = 60 * 1000 * 1000;
@@ -224,8 +229,7 @@ extern "C" void app_main(void) {
   using DisplayDriver = espp::St7789;
   auto rotation = espp::Display::Rotation::PORTRAIT;
   //! [ttgo_config example]
-#endif
-#if CONFIG_HARDWARE_BOX
+#elif CONFIG_HARDWARE_BOX
   //! [box_config example]
   static constexpr std::string_view dev_kit = "ESP32-S3-BOX";
   int clock_speed = 60 * 1000 * 1000;
@@ -249,6 +253,30 @@ extern "C" void app_main(void) {
   using DisplayDriver = espp::St7789;
   auto rotation = espp::Display::Rotation::LANDSCAPE;
   //! [box_config example]
+#elif CONFIG_SMARTKNOB_HA
+  //! [smartknob_config example]
+  static constexpr std::string_view dev_kit = "Smartknob-HA";
+  int clock_speed = 80 * 1000 * 1000;
+  auto spi_num = SPI2_HOST;
+  gpio_num_t mosi = GPIO_NUM_6;
+  gpio_num_t sclk = GPIO_NUM_5;
+  gpio_num_t spics = GPIO_NUM_15;
+  gpio_num_t reset = GPIO_NUM_4;
+  gpio_num_t dc_pin = (gpio_num_t)DC_PIN_NUM;
+  gpio_num_t backlight = GPIO_NUM_7;
+  size_t width = 240;
+  size_t height = 240;
+  size_t pixel_buffer_size = width * 50;
+  bool backlight_on_value = true;
+  bool reset_value = false;
+  bool invert_colors = true;
+  int offset_x = 0;
+  int offset_y = 0;
+  bool mirror_x = true;
+  bool mirror_y = true;
+  using DisplayDriver = espp::Gc9a01;
+  auto rotation = espp::Display::Rotation::LANDSCAPE;
+  //! [smartknob_config example]
 #endif
 
   fmt::print("Starting display_drivers example for {}\n", dev_kit);