add stm32f429 LCD components

hardware/Makefile

@@ -34,6 +34,7 @@ TARGET_SRCS += src/stm32f4xx/ssp.c
 TARGET_SRCS += src/stm32f4xx/timer.c
 TARGET_SRCS += src/stm32f4xx/uart.c
 TARGET_SRCS += src/stm32f4xx/irq.c
+TARGET_SRCS += src/stm32f4xx/lcddriver.c
 endif
 endif
 

hardware/include/lcddriver.h

@@ -0,0 +1,13 @@
+#pragma once
+
+#include <decl.h>
+#include <stdint.h>
+
+#include <gpio.h>
+
+
+BEGIN_DECL
+
+void lcddriver_config();
+
+END_DECL

hardware/src/stm32f4xx/lcddriver.c

@@ -0,0 +1,144 @@
+#include "lcddriver.h"
+
+#include <stm32f4xx_ltdc.h>
+
+#define  LCD_PIXEL_WIDTH    ((uint16_t)240)
+#define  LCD_PIXEL_HEIGHT   ((uint16_t)320)
+
+#define LCD_FRAME_BUFFER       ((uint32_t)0xD0000000)
+#define BUFFER_OFFSET          ((uint32_t)0x50000) 
+
+void lcddriver_config() {
+  LTDC_InitTypeDef ltcd;
+
+  RCC_APB2PeriphClockCmd(RCC_APB2Periph_LTDC, ENABLE);
+
+  ltcd.LTDC_HSPolarity = LTDC_HSPolarity_AL;
+  ltcd.LTDC_VSPolarity = LTDC_VSPolarity_AL;
+  ltcd.LTDC_DEPolarity = LTDC_DEPolarity_AL;
+  ltcd.LTDC_PCPolarity = LTDC_PCPolarity_IPC;
+
+  /* Configure R,G,B component values for LCD background color */
+  ltcd.LTDC_BackgroundRedValue = 0;
+  ltcd.LTDC_BackgroundGreenValue = 0;
+  ltcd.LTDC_BackgroundBlueValue = 0;
+
+  /* Configure PLLSAI prescalers for LCD */
+  /* Enable Pixel Clock */
+  /* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
+  /* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAI_N = 192 Mhz */
+  /* PLLLCDCLK = PLLSAI_VCO Output/PLLSAI_R = 192/4 = 48 Mhz */
+  /* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 48/8 = 6 Mhz */
+  RCC_PLLSAIConfig(192, 7, 4);
+  RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div8);
+
+  /* Enable PLLSAI Clock */
+  RCC_PLLSAICmd(ENABLE);
+  /* Wait for PLLSAI activation */
+  while(RCC_GetFlagStatus(RCC_FLAG_PLLSAIRDY) == RESET)
+  {
+  }
+
+  /* Timing configuration */
+  /* Configure horizontal synchronization width */
+  ltcd.LTDC_HorizontalSync = 9;
+  /* Configure vertical synchronization height */
+  ltcd.LTDC_VerticalSync = 1;
+  /* Configure accumulated horizontal back porch */
+  ltcd.LTDC_AccumulatedHBP = 29;
+  /* Configure accumulated vertical back porch */
+  ltcd.LTDC_AccumulatedVBP = 3;
+  /* Configure accumulated active width */
+  ltcd.LTDC_AccumulatedActiveW = 269;
+  /* Configure accumulated active height */
+  ltcd.LTDC_AccumulatedActiveH = 323;
+  /* Configure total width */
+  ltcd.LTDC_TotalWidth = 279;
+  /* Configure total height */
+  ltcd.LTDC_TotalHeigh = 327;
+
+  LTDC_Init(&ltcd);
+
+  //layer init
+  LTDC_Layer_InitTypeDef LTDC_Layer_InitStruct;
+
+  /* Windowing configuration */
+  /* In this case all the active display area is used to display a picture then :
+  Horizontal start = horizontal synchronization + Horizontal back porch = 30
+  Horizontal stop = Horizontal start + window width -1 = 30 + 240 -1
+  Vertical start   = vertical synchronization + vertical back porch     = 4
+  Vertical stop   = Vertical start + window height -1  = 4 + 320 -1      */
+  LTDC_Layer_InitStruct.LTDC_HorizontalStart = 30;
+  LTDC_Layer_InitStruct.LTDC_HorizontalStop = (LCD_PIXEL_WIDTH + 30 - 1);
+  LTDC_Layer_InitStruct.LTDC_VerticalStart = 4;
+  LTDC_Layer_InitStruct.LTDC_VerticalStop = (LCD_PIXEL_HEIGHT + 4 - 1);
+
+  /* Pixel Format configuration*/
+  LTDC_Layer_InitStruct.LTDC_PixelFormat = LTDC_Pixelformat_RGB565;
+  /* Alpha constant (255 totally opaque) */
+  LTDC_Layer_InitStruct.LTDC_ConstantAlpha = 255;
+  /* Default Color configuration (configure A,R,G,B component values) */
+  LTDC_Layer_InitStruct.LTDC_DefaultColorBlue = 0;
+  LTDC_Layer_InitStruct.LTDC_DefaultColorGreen = 0;
+  LTDC_Layer_InitStruct.LTDC_DefaultColorRed = 0;
+  LTDC_Layer_InitStruct.LTDC_DefaultColorAlpha = 0;
+  /* Configure blending factors */
+  LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_CA;
+  LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_CA;
+
+  /* the length of one line of pixels in bytes + 3 then :
+  Line Lenth = Active high width x number of bytes per pixel + 3
+  Active high width         = LCD_PIXEL_WIDTH
+  number of bytes per pixel = 2    (pixel_format : RGB565)
+  */
+  LTDC_Layer_InitStruct.LTDC_CFBLineLength = ((LCD_PIXEL_WIDTH * 2) + 3);
+  /* the pitch is the increment from the start of one line of pixels to the
+  start of the next line in bytes, then :
+  Pitch = Active high width x number of bytes per pixel */
+  LTDC_Layer_InitStruct.LTDC_CFBPitch = (LCD_PIXEL_WIDTH * 2);
+
+  /* Configure the number of lines */
+  LTDC_Layer_InitStruct.LTDC_CFBLineNumber = LCD_PIXEL_HEIGHT;
+
+  /* Start Address configuration : the LCD Frame buffer is defined on SDRAM */
+  LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER;
+
+  /* Initialize LTDC layer 1 */
+  LTDC_LayerInit(LTDC_Layer1, &LTDC_Layer_InitStruct);
+
+  /* Configure Layer2 */
+  /* Start Address configuration : the LCD Frame buffer is defined on SDRAM w/ Offset */
+  LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER + BUFFER_OFFSET;
+
+  /* Configure blending factors */
+  LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_PAxCA;
+  LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_PAxCA;
+
+  /* Initialize LTDC layer 2 */
+  LTDC_LayerInit(LTDC_Layer2, &LTDC_Layer_InitStruct);
+
+  /* LTDC configuration reload */
+  LTDC_ReloadConfig(LTDC_IMReload);
+
+  /* Enable foreground & background Layers */
+  LTDC_LayerCmd(LTDC_Layer1, ENABLE);
+  LTDC_LayerCmd(LTDC_Layer2, ENABLE);
+
+  /* LTDC configuration reload */
+  LTDC_ReloadConfig(LTDC_IMReload);
+
+  /* Set default font */
+  //LCD_SetFont(&LCD_DEFAULT_FONT);
+
+  /* dithering activation */
+  LTDC_DitherCmd(ENABLE);
+
+
+  LTDC_Cmd(ENABLE);
+
+//  LCD_SetFont(&Font8x8);
+//  LCD_SetLayer(LCD_BACKGROUND_LAYER);
+//    LCD_Clear(ASSEMBLE_RGB(0x00, 0x66, 0x00));
+//  LCD_SetLayer(LCD_FOREGROUND_LAYER);
+//  LCD_SetBackColor(ASSEMBLE_RGB(0x00, 0x00, 0xFF));
+}