From 7c4a05aabc1d88e22eb126ccb18835ebfbd28853 Mon Sep 17 00:00:00 2001
From: Ricardo Matsui <ricmatsui@gmail.com>
Date: Sun, 28 Mar 2021 01:33:22 -0700
Subject: [PATCH] Add support for Pirate Audio ST7789 HAT (#203)

---
 CMakeLists.txt            |  3 +++
 README.md                 |  2 ++
 pirate_audio_st7789_hat.h | 19 +++++++++++++++++++
 spi.cpp                   |  4 ++++
 st7735r.h                 |  2 ++
 5 files changed, 30 insertions(+)
 create mode 100644 pirate_audio_st7789_hat.h

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 235c70f..dacb629 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -208,6 +208,9 @@ elseif(WAVESHARE_ST7789VW_HAT)
 elseif(WAVESHARE_ST7735S_HAT)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DST7735S -DWAVESHARE_ST7735S_HAT")
 	message(STATUS "Targeting WaveShare 128x128 1.44inch LCD Hat with ST7735S controller")
+elseif(PIRATE_AUDIO_ST7789_HAT)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DST7789 -DPIRATE_AUDIO_ST7789_HAT")
+	message(STATUS "Targeting Pirate Audio 240x240 1.3inch IPS LCD Hat with ST7789 controller")
 elseif(ILI9340)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DILI9340")
 	message(STATUS "Targeting ILI9340")
diff --git a/README.md b/README.md
index cfe85d1..ca35168 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,7 @@ The following LCD displays have been tested:
  - [Arduino A000096 1.77" 160x128 LCD Screen](https://store.arduino.cc/arduino-lcd-screen) with ST7735R controller
  - [Tontec 3.5" 320x480 LCD Display](https://www.ebay.com/p/Tontec-3-5-Inches-Touch-Screen-for-Raspberry-Pi-Display-TFT-Monitor-480x320-LCD/1649448059) with MZ61581-PI-EXT 2016.1.28 controller
  - [Adafruit 1.54" 240x240 Wide Angle TFT LCD Display with MicroSD](https://www.adafruit.com/product/3787) with ST7789 controller
+ - [Pirate Audio 240x240, 1.3inch IPS LCD display HAT for Raspberry Pi](https://shop.pimoroni.com/collections/pirate-audio) with ST7789 controller
  - [WaveShare 240x240, 1.3inch IPS LCD display HAT for Raspberry Pi](https://www.waveshare.com/1.3inch-lcd-hat.htm) with ST7789VW controller
  - [WaveShare 128x128, 1.44inch LCD display HAT for Raspberry Pi](https://www.waveshare.com/1.44inch-lcd-hat.htm) with ST7735S controller
  - [KeDei 3.5 inch SPI TFTLCD 480*320 16bit/18bit version 6.3 2018/4/9](https://github.com/juj/fbcp-ili9341/issues/40) with MPI3501 controller
@@ -115,6 +116,7 @@ When using one of the displays that stack on top of the Pi that are already reco
 - `-DFREEPLAYTECH_WAVESHARE32B=ON`: If you are running on the [Freeplay CM3 or Zero](https://www.freeplaytech.com/product/freeplay-cm3-diy-kit/) device, pass this flag. (this is not a hat, but still a preconfigured pin assignment)
 - `-DWAVESHARE35B_ILI9486=ON`: If specified, targets a [Waveshare 3.5" 480x320 ILI9486](https://www.amazon.co.uk/dp/B01N48NOXI/ref=pe_3187911_185740111_TE_item) display.
 - `-DTONTEC_MZ61581=ON`: If you are running on the [Tontec 3.5" 320x480 LCD Display](https://www.ebay.com/p/Tontec-3-5-Inches-Touch-Screen-for-Raspberry-Pi-Display-TFT-Monitor-480x320-LCD/1649448059) display, pass this.
+- `-DPIRATE_AUDIO_ST7789_HAT=ON`: If specified, targets a [Pirate Audio 240x240, 1.3inch IPS LCD display HAT for Raspberry Pi](https://shop.pimoroni.com/collections/pirate-audio) with ST7789 display controller
 - `-DWAVESHARE_ST7789VW_HAT=ON`: If specified, targets a [240x240, 1.3inch IPS LCD display HAT for Raspberry Pi](https://www.waveshare.com/1.3inch-lcd-hat.htm) with ST7789VW display controller.
 - `-DWAVESHARE_ST7735S_HAT=ON`: If specified, targets a [128x128, 1.44inch LCD display HAT for Raspberry Pi](https://www.waveshare.com/1.3inch-lcd-hat.htm) with ST7735S display controller.
 - `-DKEDEI_V63_MPI3501=ON`: If specified, targets a [KeDei 3.5 inch SPI TFTLCD 480*320 16bit/18bit version 6.3 2018/4/9](https://github.com/juj/fbcp-ili9341/issues/40) display with MPI3501 display controller.
diff --git a/pirate_audio_st7789_hat.h b/pirate_audio_st7789_hat.h
new file mode 100644
index 0000000..88fc6f7
--- /dev/null
+++ b/pirate_audio_st7789_hat.h
@@ -0,0 +1,19 @@
+#pragma once
+
+// Data specific to Pirate Audio series 240x240, 1.3inch IPS LCD ST7789 hat, https://shop.pimoroni.com/collections/pirate-audio
+#ifdef PIRATE_AUDIO_ST7789_HAT
+
+#if !defined(GPIO_TFT_DATA_CONTROL)
+#define GPIO_TFT_DATA_CONTROL 9
+#endif
+
+#if !defined(GPIO_TFT_BACKLIGHT)
+#define GPIO_TFT_BACKLIGHT 13
+#endif
+
+#define DISPLAY_USES_CS1
+
+// CS1 line is for the LCD
+#define DISPLAY_SPI_DRIVE_SETTINGS (1)
+
+#endif
diff --git a/spi.cpp b/spi.cpp
index 80dbe22..d156f2d 100644
--- a/spi.cpp
+++ b/spi.cpp
@@ -532,7 +532,11 @@ int InitSPI()
 #ifdef GPIO_TFT_DATA_CONTROL
   SET_GPIO_MODE(GPIO_TFT_DATA_CONTROL, 0x01); // Data/Control pin to output (0x01)
 #endif
+  // The Pirate Audio hat ST7789 based display has Data/Control on the MISO pin, so only initialize the pin as MISO if the
+  // Data/Control pin does not use it.
+#if !defined(GPIO_TFT_DATA_CONTROL) || GPIO_TFT_DATA_CONTROL != GPIO_SPI0_MISO
   SET_GPIO_MODE(GPIO_SPI0_MISO, 0x04);
+#endif
   SET_GPIO_MODE(GPIO_SPI0_MOSI, 0x04);
   SET_GPIO_MODE(GPIO_SPI0_CLK, 0x04);
 
diff --git a/st7735r.h b/st7735r.h
index 789b4b6..6875252 100644
--- a/st7735r.h
+++ b/st7735r.h
@@ -39,6 +39,8 @@
 #include "waveshare_st7789vw_hat.h"
 #elif defined(WAVESHARE_ST7735S_HAT)
 #include "waveshare_st7735s_hat.h"
+#elif defined(PIRATE_AUDIO_ST7789_HAT)
+#include "pirate_audio_st7789_hat.h"
 #endif
 
 #define InitSPIDisplay InitST7735R