Feature/setup lcd init: bring up lvgl and integrate based lcd driver into picomotion (#17)

* initial changes to support LCD on pico

* finished initial lcd setup

* Auto format code with clang-format

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: mdkul22

.gitmodules

@@ -1,3 +1,6 @@
 [submodule "extern/pico-sdk"]
 	path = extern/pico-sdk
 	url = https://github.com/raspberrypi/pico-sdk.git
+[submodule "extern/lvgl"]
+	path = extern/lvgl
+	url = https://github.com/lvgl/lvgl.git

CMakeLists.txt

@@ -12,10 +12,22 @@ project(picomotion VERSION 1.0
 pico_sdk_init()
 # rest of your project
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+set(LV_CONF_PATH "${CMAKE_SOURCE_DIR}/include/lv_config/lv_conf.h")
 
 add_subdirectory(src/gc9a01)
 add_subdirectory(src/qmi8658)
 add_subdirectory(src/hwconfig)
+add_subdirectory(extern/lvgl)
+add_subdirectory(src/gui)
+
+# lvgl stuff
+include_directories(
+  ${CMAKE_SOURCE_DIR}/include/lv_config
+  extern/lvgl
+  extern/lvgl/src
+)
+
+message(STATUS "Including lv_conf.h from ${LV_CONF_PATH} If there are compilation errors related to lv_conf.h, please check that this file is correctly configured according to your needs and that it is in the correct directory.")
 
 add_executable(picomotion
     app/picomotion.c
@@ -28,7 +40,9 @@ target_link_libraries(picomotion
     hardware_i2c
     hwconfig
     qmi8658
-    # gc9a01
+    lvgl
+    gc9a01
+    gui
 )
 
 #  enable both usb and main

app/picomotion.c

@@ -3,12 +3,15 @@
 #include "sys_common.h"
 #include <stdint.h>
 #include <stdio.h>
+#include "gc9a01.h"
 
 int main() {
     stdio_init_all();
     gprintf(DEBUG, "\n\033[2J\n"); // CLEAR SCREEN CMD
     init_hardware();
     configure_hardware();
+    LCD_1IN28_Init(HORIZONTAL);
+    LCD_1IN28_Clear(WHITE);
     int16_t raw_accel[3];
     int16_t raw_gyro[3];
     uint64_t time_count;

extern/lvgl

@@ -0,0 +1,53 @@
+#ifndef __LCD_1IN28_H
+#define __LCD_1IN28_H
+
+#include <stdint.h>
+
+#include <stdio.h>
+#include <stdlib.h> //itoa()
+
+#define HORIZONTAL 0
+#define VERTICAL 1
+
+#define WHITE 0xFFFF
+#define BLACK 0x0000
+#define BLUE 0x001F
+#define BRED 0XF81F
+#define GRED 0XFFE0
+#define GBLUE 0X07FF
+#define RED 0xF800
+#define MAGENTA 0xF81F
+#define GREEN 0x07E0
+#define CYAN 0x7FFF
+#define YELLOW 0xFFE0
+#define BROWN 0XBC40
+#define BRRED 0XFC07
+#define GRAY 0X8430
+#define DARKBLUE 0X01CF
+#define LIGHTBLUE 0X7D7C
+#define GRAYBLUE 0X5458
+#define LIGHTGREEN 0X841F
+#define LGRAY 0XC618
+#define LGRAYBLUE 0XA651
+#define LBBLUE 0X2B12
+typedef struct {
+  uint16_t WIDTH;
+  uint16_t HEIGHT;
+  uint8_t SCAN_DIR;
+} LCD_1IN28_ATTRIBUTES;
+extern LCD_1IN28_ATTRIBUTES LCD_1IN28;
+
+/********************************************************************************
+function:
+      Macro definition variable name
+********************************************************************************/
+void LCD_1IN28_Init(uint8_t Scan_dir);
+void LCD_1IN28_Clear(uint16_t Color);
+void LCD_1IN28_Display(uint16_t* Image);
+void LCD_1IN28_DisplayWindows(
+    uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend, uint16_t* Image);
+void LCD_1IN28_DisplayPoint(uint16_t X, uint16_t Y, uint16_t Color);
+
+void LCD_1IN28_SetWindows(uint16_t Xstart, uint16_t Ystart, uint16_t Xend, uint16_t Yend);
+
+#endif

include/gc9a01/gc9a01.h

@@ -0,0 +1,11 @@
+
+#ifndef _GUI_H_
+#define _GUI_H_
+
+#define DISP_HOR_RES 240
+#define DISP_VER_RES 240
+
+void gui_init(void);
+void gui_widgets_init(void);
+
+#endif

include/gui/gui.h

@@ -1,7 +1,25 @@
 #pragma once
+#include "hardware/dma.h"
+#include "hardware/spi.h"
 #include "pico/stdlib.h"
 #include "sys_common.h"
 
+#define PLL_SYS_KHZ (270 * 1000)
+#define LCD_SPI_PORT (spi1)
+
+#define LCD_DC_PIN (8)
+#define LCD_CS_PIN (9)
+#define LCD_CLK_PIN (10)
+#define LCD_MOSI_PIN (11)
+#define LCD_RST_PIN (12)
+#define LCD_BL_PIN (25)
+
+#define LCD_1IN28_HEIGHT 240
+#define LCD_1IN28_WIDTH 240
+
+extern dma_channel_config c;
+extern uint dma_tx;
+
 enum _hw_config_pins {
   QMI_SDA_PIN = 6,
   QMI_SCL_PIN = 7,