From d6dd96859a56d5d306a0779cd0263f8ef3b3c45a Mon Sep 17 00:00:00 2001
From: Miso Kim <meeso.kim@gmail.com>
Date: Tue, 31 Jan 2023 01:48:56 +0900
Subject: [PATCH] CMakeLists.txt display.h spi.cpp spi.h

---
 CMakeLists.txt |  6 +++++-
 display.h      |  2 ++
 spi.cpp        | 26 ++++++++++++++++++++++----
 spi.h          |  3 ++-
 4 files changed, 31 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 891d0f6..54c0ec4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,5 +1,6 @@
 cmake_minimum_required(VERSION 2.8)
 
+project(fbcp-ili9341)
 if(NOT CMAKE_BUILD_TYPE)
 	set(CMAKE_BUILD_TYPE "Release" CACHE STRING "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel." FORCE)
 endif()
@@ -227,6 +228,9 @@ elseif(KEDEI_V63_MPI3501)
 	if (USE_DMA_TRANSFERS)
 		message(FATAL_ERROR "DMA is unfortunately not possible with KeDei MPI3501. Please disable with -DUSE_DMA_TRANSFERS=OFF.")
 	endif()
+elseif(KEDEI_TRASH)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DKEDEI_TRASH")
+	message(STATUS "Targeting KeDei 3.5 inch SPI TFTLCD 480*320 16bit/18bit version 3.0 2015/4/9 display")
 elseif(ILI9341)
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DILI9341")
 	message(STATUS "Targeting ILI9341")
@@ -278,4 +282,4 @@ endif()
 
 add_executable(fbcp-ili9341 ${sourceFiles})
 
-target_link_libraries(fbcp-ili9341 pthread bcm_host atomic)
+target_link_libraries(fbcp-ili9341 pthread bcm_host atomic bcm2835)
diff --git a/display.h b/display.h
index ff0bd72..5ef83b9 100644
--- a/display.h
+++ b/display.h
@@ -7,6 +7,8 @@
 
 #if defined(ILI9341) || defined(ILI9340)
 #include "ili9341.h"
+#elif defined(KEDEI_TRASH)
+#include "kedei_trash.h"
 #elif defined(ILI9486L)
 #include "ili9486l.h"
 #elif defined(ILI9488)
diff --git a/spi.cpp b/spi.cpp
index 96f1223..8be1a80 100644
--- a/spi.cpp
+++ b/spi.cpp
@@ -41,7 +41,7 @@ static uint32_t writeCounter = 0;
   TOGGLE_CHIP_SELECT_LINE(); \
   DEBUG_PRINT_WRITTEN_BYTE(w); \
   } while(0)
-
+  
 int mem_fd = -1;
 volatile void *bcm2835 = 0;
 volatile GPIORegisterFile *gpio = 0;
@@ -322,7 +322,6 @@ void RunSPITask(SPITask *task)
 
     SET_GPIO(GPIO_TFT_DATA_CONTROL);
 #endif
-
     // Send the data payload:
     while(tStart < tPrefillEnd) WRITE_FIFO(*tStart++);
     while(tStart < tEnd)
@@ -338,6 +337,11 @@ void RunSPITask(SPITask *task)
 }
 #else
 
+#ifdef KEDEI_TRASH
+extern void lcd_data8(uint8_t *data);
+extern void lcd_cmd(uint8_t data);
+#endif 
+
 void RunSPITask(SPITask *task)
 {
   WaitForPolledSPITransferToFinish();
@@ -355,6 +359,15 @@ void RunSPITask(SPITask *task)
   const uint32_t payloadSize = tEnd - tStart;
   uint8_t *tPrefillEnd = tStart + MIN(15, payloadSize);
 
+#ifdef KEDEI_TRASH
+  lcd_cmd(task->cmd);
+  while(tStart < tEnd)
+  {
+    lcd_data8(tStart);
+    tStart += 2;
+  }
+#else // not KEDEI_TRASH  
+
   // Send the command word if display is 4-wire (3-wire displays can omit this, commands are interleaved in the data payload stream above)
 #ifndef SPI_3WIRE_PROTOCOL
   // An SPI transfer to the display always starts with one control (command) byte, followed by N data bytes.
@@ -365,7 +378,6 @@ void RunSPITask(SPITask *task)
   WRITE_FIFO(0x00);
 #endif
   WRITE_FIFO(task->cmd);
-
 #ifdef DISPLAY_SPI_BUS_IS_16BITS_WIDE
   while(!(spi->cs & (BCM2835_SPI0_CS_DONE))) /*nop*/;
   spi->fifo;
@@ -393,7 +405,11 @@ void RunSPITask(SPITask *task)
   else
 #endif
   {
-    while(tStart < tPrefillEnd) WRITE_FIFO(*tStart++);
+    while(tStart < tPrefillEnd) 
+    {
+      WRITE_FIFO(*tStart++);
+
+    }
     while(tStart < tEnd)
     {
       uint32_t cs = spi->cs;
@@ -402,10 +418,12 @@ void RunSPITask(SPITask *task)
       if ((cs & (BCM2835_SPI0_CS_RXR|BCM2835_SPI0_CS_RXF))) spi->cs = BCM2835_SPI0_CS_CLEAR_RX | BCM2835_SPI0_CS_TA | DISPLAY_SPI_DRIVE_SETTINGS;
     }
   }
+#endif // not KEDEI_TRASH  
 
 #ifdef DISPLAY_NEEDS_CHIP_SELECT_SIGNAL
   END_SPI_COMMUNICATION();
 #endif
+
 }
 #endif
 
diff --git a/spi.h b/spi.h
index e88c8d0..738a5a5 100644
--- a/spi.h
+++ b/spi.h
@@ -112,12 +112,12 @@ typedef struct __attribute__((packed)) SPITask
 #else
   uint8_t cmd;
 #endif
-  uint32_t dmaSpiHeader;
 #ifdef OFFLOAD_PIXEL_COPY_TO_DMA_CPP
   uint8_t *fb;
   uint8_t *prevFb;
   uint16_t width;
 #endif
+  uint32_t dmaSpiHeader;
   uint8_t data[]; // Contains both 8-bit and 9-bit tasks back to back, 8-bit first, then 9-bit.
 
 #ifdef SPI_3WIRE_PROTOCOL
@@ -130,6 +130,7 @@ typedef struct __attribute__((packed)) SPITask
   inline uint8_t *PayloadEnd() { return data + size; }
   inline uint32_t PayloadSize() const { return size; }
   inline uint32_t *DmaSpiHeaderAddress() { return &dmaSpiHeader; }
+  // inline uint32_t *DmaSpiHeaderAddress() { return 0; }
 #endif
 
 } SPITask;