#include "stm32f4xx.h"
static uint32_t frameBuf0 = (uint32_t)(0xd0000000);
#define SDRAM_MODEREG_BURST_LENGTH_1 ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_LENGTH_2 ((uint16_t)0x0001)
#define SDRAM_MODEREG_BURST_LENGTH_4 ((uint16_t)0x0002)
#define SDRAM_MODEREG_BURST_LENGTH_8 ((uint16_t)0x0004)
#define SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL ((uint16_t)0x0000)
#define SDRAM_MODEREG_BURST_TYPE_INTERLEAVED ((uint16_t)0x0008)
#define SDRAM_MODEREG_CAS_LATENCY_2 ((uint16_t)0x0020)
#define SDRAM_MODEREG_CAS_LATENCY_3 ((uint16_t)0x0030)
#define SDRAM_MODEREG_OPERATING_MODE_STANDARD ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_PROGRAMMED ((uint16_t)0x0000)
#define SDRAM_MODEREG_WRITEBURST_MODE_SINGLE ((uint16_t)0x0200)
static void __Delay(__IO uint32_t nCount)
{
__IO uint32_t index = 0;
for(index = (100000 * nCount); index != 0; index--)
{
}
}
static void LCD_AF_GPIOConfig(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* Enable GPIOI, GPIOJ, GPIOG, GPIOF, GPIOH AHB Clocks */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA | RCC_AHB1Periph_GPIOB | \
RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD | \
RCC_AHB1Periph_GPIOF | RCC_AHB1Periph_GPIOG, ENABLE);
/* GPIOs Configuration */
/*
+------------------------+-----------------------+----------------------------+
+ LCD pins assignment +
+------------------------+-----------------------+----------------------------+
| LCD_TFT R2 <-> PC.12 | LCD_TFT G2 <-> PA.06 | LCD_TFT B2 <-> PD.06 |
| LCD_TFT R3 <-> PB.00 | LCD_TFT G3 <-> PG.10 | LCD_TFT B3 <-> PG.11 |
| LCD_TFT R4 <-> PA.11 | LCD_TFT G4 <-> PB.10 | LCD_TFT B4 <-> PG.12 |
| LCD_TFT R5 <-> PA.12 | LCD_TFT G5 <-> PB.11 | LCD_TFT B5 <-> PA.03 |
| LCD_TFT R6 <-> PB.01 | LCD_TFT G6 <-> PC.07 | LCD_TFT B6 <-> PB.08 |
| LCD_TFT R7 <-> PG.06 | LCD_TFT G7 <-> PD.03 | LCD_TFT B7 <-> PB.09 |
-------------------------------------------------------------------------------
| LCD_TFT HSYNC <-> PC.06 | LCDTFT VSYNC <-> PA.04 |
| LCD_TFT CLK <-> PG.07 | LCD_TFT DE <-> PF.10 |
-----------------------------------------------------
*/
/* GPIOA configuration */
GPIO_PinAFConfig(GPIOA, GPIO_PinSource3, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource4, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource6, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_LTDC);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_6 | \
GPIO_Pin_11 | GPIO_Pin_12;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStruct);
/* GPIOB configuration */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource0, 0x09);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource1, 0x09);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource8, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource9, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource10, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource11, GPIO_AF_LTDC);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_8 | \
GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_11;
GPIO_Init(GPIOB, &GPIO_InitStruct);
/* GPIOC configuration */
GPIO_PinAFConfig(GPIOC, GPIO_PinSource6, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource7, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_LTDC);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_10;
GPIO_Init(GPIOC, &GPIO_InitStruct);
/* GPIOD configuration */
GPIO_PinAFConfig(GPIOD, GPIO_PinSource3, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_LTDC);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_3 | GPIO_Pin_6;
GPIO_Init(GPIOD, &GPIO_InitStruct);
/* GPIOF configuration */
GPIO_PinAFConfig(GPIOF, GPIO_PinSource10, GPIO_AF_LTDC);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOF, &GPIO_InitStruct);
/* GPIOG configuration */
GPIO_PinAFConfig(GPIOG, GPIO_PinSource6, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource7, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource10, 0x09);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource11, GPIO_AF_LTDC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource12, 0x09);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_6 | GPIO_Pin_7 | GPIO_Pin_10 | \
GPIO_Pin_11 | GPIO_Pin_12;
GPIO_Init(GPIOG, &GPIO_InitStruct);
}
void SDRAM_InitSequence(void)
{
FMC_SDRAMCommandTypeDef FMC_SDRAMCommandStructure;
uint32_t tmpr = 0;
/* Step 3 --------------------------------------------------------------------*/
/* Configure a clock configuration enable command */
FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_CLK_Enabled;
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_Command_Target_bank2;
FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 1;
FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = 0;
/* Wait until the SDRAM controller is ready */
while(FMC_GetFlagStatus(FMC_Bank2_SDRAM, FMC_FLAG_Busy) != RESET)
{
}
/* Send the command */
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure);
/* Step 4 --------------------------------------------------------------------*/
/* Insert 100 ms delay */
__Delay(10);
/* Step 5 --------------------------------------------------------------------*/
/* Configure a PALL (precharge all) command */
FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_PALL;
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_Command_Target_bank2;
FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 1;
FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = 0;
/* Wait until the SDRAM controller is ready */
while(FMC_GetFlagStatus(FMC_Bank2_SDRAM, FMC_FLAG_Busy) != RESET)
{
}
/* Send the command */
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure);
/* Step 6 --------------------------------------------------------------------*/
/* Configure a Auto-Refresh command */
FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_AutoRefresh;
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_Command_Target_bank2;
FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 4;
FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = 0;
/* Wait until the SDRAM controller is ready */
while(FMC_GetFlagStatus(FMC_Bank2_SDRAM, FMC_FLAG_Busy) != RESET)
{
}
/* Send the first command */
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure);
/* Wait until the SDRAM controller is ready */
while(FMC_GetFlagStatus(FMC_Bank2_SDRAM, FMC_FLAG_Busy) != RESET)
{
}
/* Send the second command */
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure);
/* Step 7 --------------------------------------------------------------------*/
/* Program the external memory mode register */
tmpr = (uint32_t)SDRAM_MODEREG_BURST_LENGTH_2 |
SDRAM_MODEREG_BURST_TYPE_SEQUENTIAL |
SDRAM_MODEREG_CAS_LATENCY_3 |
SDRAM_MODEREG_OPERATING_MODE_STANDARD |
SDRAM_MODEREG_WRITEBURST_MODE_SINGLE;
/* Configure a load Mode register command*/
FMC_SDRAMCommandStructure.FMC_CommandMode = FMC_Command_Mode_LoadMode;
FMC_SDRAMCommandStructure.FMC_CommandTarget = FMC_Command_Target_bank2;
FMC_SDRAMCommandStructure.FMC_AutoRefreshNumber = 1;
FMC_SDRAMCommandStructure.FMC_ModeRegisterDefinition = tmpr;
/* Wait until the SDRAM controller is ready */
while(FMC_GetFlagStatus(FMC_Bank2_SDRAM, FMC_FLAG_Busy) != RESET)
{
}
/* Send the command */
FMC_SDRAMCmdConfig(&FMC_SDRAMCommandStructure);
/* Step 8 --------------------------------------------------------------------*/
/* Set the refresh rate counter */
/* (15.62 us x Freq) - 20 */
/* Set the device refresh counter */
FMC_SetRefreshCount(1386);
/* Wait until the SDRAM controller is ready */
while(FMC_GetFlagStatus(FMC_Bank2_SDRAM, FMC_FLAG_Busy) != RESET)
{
}
}
void SDRAM_GPIOConfig(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable GPIOs clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB | RCC_AHB1Periph_GPIOC | RCC_AHB1Periph_GPIOD |
RCC_AHB1Periph_GPIOE | RCC_AHB1Periph_GPIOF | RCC_AHB1Periph_GPIOG, ENABLE);
/*-- GPIOs Configuration -----------------------------------------------------*/
/*
+-------------------+--------------------+--------------------+--------------------+
+ SDRAM pins assignment +
+-------------------+--------------------+--------------------+--------------------+
| PD0 <-> FMC_D2 | PE0 <-> FMC_NBL0 | PF0 <-> FMC_A0 | PG0 <-> FMC_A10 |
| PD1 <-> FMC_D3 | PE1 <-> FMC_NBL1 | PF1 <-> FMC_A1 | PG1 <-> FMC_A11 |
| PD8 <-> FMC_D13 | PE7 <-> FMC_D4 | PF2 <-> FMC_A2 | PG8 <-> FMC_SDCLK |
| PD9 <-> FMC_D14 | PE8 <-> FMC_D5 | PF3 <-> FMC_A3 | PG15 <-> FMC_NCAS |
| PD10 <-> FMC_D15 | PE9 <-> FMC_D6 | PF4 <-> FMC_A4 |--------------------+
| PD14 <-> FMC_D0 | PE10 <-> FMC_D7 | PF5 <-> FMC_A5 |
| PD15 <-> FMC_D1 | PE11 <-> FMC_D8 | PF11 <-> FMC_NRAS |
+-------------------| PE12 <-> FMC_D9 | PF12 <-> FMC_A6 |
| PE13 <-> FMC_D10 | PF13 <-> FMC_A7 |
| PE14 <-> FMC_D11 | PF14 <-> FMC_A8 |
| PE15 <-> FMC_D12 | PF15 <-> FMC_A9 |
+-------------------+--------------------+--------------------+
| PB5 <-> FMC_SDCKE1|
| PB6 <-> FMC_SDNE1 |
| PC0 <-> FMC_SDNWE |
+-------------------+
*/
/* Common GPIO configuration */
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
/* GPIOB configuration */
GPIO_PinAFConfig(GPIOB, GPIO_PinSource5 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6;
GPIO_Init(GPIOB, &GPIO_InitStructure);
/* GPIOC configuration */
GPIO_PinAFConfig(GPIOC, GPIO_PinSource0 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
GPIO_Init(GPIOC, &GPIO_InitStructure);
/* GPIOD configuration */
GPIO_PinAFConfig(GPIOD, GPIO_PinSource0, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource1, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource8, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource9, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource10, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource14, GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource15, GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_8 |
GPIO_Pin_9 | GPIO_Pin_10 | GPIO_Pin_14 |
GPIO_Pin_15;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/* GPIOE configuration */
GPIO_PinAFConfig(GPIOE, GPIO_PinSource0 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource1 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource7 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource8 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource9 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource10 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource11 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource12 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource13 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource14 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOE, GPIO_PinSource15 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_7 |
GPIO_Pin_8 | GPIO_Pin_9 | GPIO_Pin_10 |
GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 |
GPIO_Pin_14 | GPIO_Pin_15;
GPIO_Init(GPIOE, &GPIO_InitStructure);
/* GPIOF configuration */
GPIO_PinAFConfig(GPIOF, GPIO_PinSource0 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource1 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource2 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource3 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource4 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource5 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource11 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource12 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource13 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource14 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOF, GPIO_PinSource15 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_2 |
GPIO_Pin_3 | GPIO_Pin_4 | GPIO_Pin_5 |
GPIO_Pin_11 | GPIO_Pin_12 | GPIO_Pin_13 |
GPIO_Pin_14 | GPIO_Pin_15;
GPIO_Init(GPIOF, &GPIO_InitStructure);
/* GPIOG configuration */
GPIO_PinAFConfig(GPIOG, GPIO_PinSource0 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource1 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource4 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource5 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource8 , GPIO_AF_FMC);
GPIO_PinAFConfig(GPIOG, GPIO_PinSource15 , GPIO_AF_FMC);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0 | GPIO_Pin_1 | GPIO_Pin_4 |
GPIO_Pin_5 | GPIO_Pin_8 | GPIO_Pin_15;
GPIO_Init(GPIOG, &GPIO_InitStructure);
}
void SDRAM_Init(void)
{
FMC_SDRAMInitTypeDef FMC_SDRAMInitStructure;
FMC_SDRAMTimingInitTypeDef FMC_SDRAMTimingInitStructure;
/* GPIO configuration for FMC SDRAM bank */
SDRAM_GPIOConfig();
/* Enable FMC clock */
RCC_AHB3PeriphClockCmd(RCC_AHB3Periph_FMC, ENABLE);
/* FMC Configuration ---------------------------------------------------------*/
/* FMC SDRAM Bank configuration */
/* Timing configuration for 90 Mhz of SD clock frequency (180Mhz/2) */
/* TMRD: 2 Clock cycles */
FMC_SDRAMTimingInitStructure.FMC_LoadToActiveDelay = 2;
/* TXSR: min=70ns (7x11.11ns) */
FMC_SDRAMTimingInitStructure.FMC_ExitSelfRefreshDelay = 7;
/* TRAS: min=42ns (4x11.11ns) max=120k (ns) */
FMC_SDRAMTimingInitStructure.FMC_SelfRefreshTime = 4;
/* TRC: min=70 (7x11.11ns) */
FMC_SDRAMTimingInitStructure.FMC_RowCycleDelay = 7;
/* TWR: min=1+ 7ns (1+1x11.11ns) */
FMC_SDRAMTimingInitStructure.FMC_WriteRecoveryTime = 2;
/* TRP: 20ns => 2x11.11ns */
FMC_SDRAMTimingInitStructure.FMC_RPDelay = 2;
/* TRCD: 20ns => 2x11.11ns */
FMC_SDRAMTimingInitStructure.FMC_RCDDelay = 2;
/* FMC SDRAM control configuration */
FMC_SDRAMInitStructure.FMC_Bank = FMC_Bank2_SDRAM;
/* Row addressing: [7:0] */
FMC_SDRAMInitStructure.FMC_ColumnBitsNumber = FMC_ColumnBits_Number_8b;
/* Column addressing: [11:0] */
FMC_SDRAMInitStructure.FMC_RowBitsNumber = FMC_RowBits_Number_12b;
FMC_SDRAMInitStructure.FMC_SDMemoryDataWidth = FMC_SDMemory_Width_16b;
FMC_SDRAMInitStructure.FMC_InternalBankNumber = FMC_InternalBank_Number_4;
FMC_SDRAMInitStructure.FMC_CASLatency = FMC_CAS_Latency_3;
FMC_SDRAMInitStructure.FMC_WriteProtection = FMC_Write_Protection_Disable;
FMC_SDRAMInitStructure.FMC_SDClockPeriod = FMC_SDClock_Period_2;
FMC_SDRAMInitStructure.FMC_ReadBurst = FMC_Read_Burst_Disable;
FMC_SDRAMInitStructure.FMC_ReadPipeDelay = FMC_ReadPipe_Delay_1;
FMC_SDRAMInitStructure.FMC_SDRAMTimingStruct = &FMC_SDRAMTimingInitStructure;
/* FMC SDRAM bank initialization */
FMC_SDRAMInit(&FMC_SDRAMInitStructure);
/* FMC SDRAM device initialization sequence */
SDRAM_InitSequence();
}
static void LCD_Config(void)
{
LTDC_InitTypeDef LTDC_InitStruct;
LTDC_Layer_InitTypeDef LTDC_Layer_InitStruct;
GPIO_InitTypeDef GPIO_InitStructure;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
/* Configure NCS in Output Push-Pull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_13;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOD, &GPIO_InitStructure);
/* Enable the LTDC Clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_LTDC, ENABLE);
/* Enable the DMA2D Clock */
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2D, ENABLE);
/* Configure the LCD Control pins */
LCD_AF_GPIOConfig();
/* Configure the FMC Parallel interface : SDRAM is used as Frame Buffer for
LCD */
SDRAM_Init();
/* Enable Pixel Clock ------------------------------------------------------*/
/* Configure PLLSAI prescalers for LCD */
/* 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 = 192/3 = 64 Mhz */
/* LTDC clock frequency = PLLLCDCLK / RCC_PLLSAIDivR = 64/8 = 8 Mhz */
RCC_PLLSAIConfig(96, 7, 2);
RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div2);
/* Enable PLLSAI Clock */
RCC_PLLSAICmd(ENABLE);
/* Wait for PLLSAI activation */
while(RCC_GetFlagStatus(RCC_FLAG_PLLSAIRDY) == RESET)
{
}
/* LTDC Initialization -----------------------------------------------------*/
/* Initialize the horizontal synchronization polarity as active low*/
LTDC_InitStruct.LTDC_HSPolarity = LTDC_HSPolarity_AL;
/* Initialize the vertical synchronization polarity as active low */
LTDC_InitStruct.LTDC_VSPolarity = LTDC_VSPolarity_AL;
/* Initialize the data enable polarity as active low */
LTDC_InitStruct.LTDC_DEPolarity = LTDC_DEPolarity_AL;
/* Initialize the pixel clock polarity as input pixel clock */
LTDC_InitStruct.LTDC_PCPolarity = LTDC_PCPolarity_IPC;
/* Timing configuration */
/* Configure horizontal synchronization width */
LTDC_InitStruct.LTDC_HorizontalSync = 1;
/* Configure vertical synchronization height */
LTDC_InitStruct.LTDC_VerticalSync = 1;
/* Configure accumulated horizontal back porch */
LTDC_InitStruct.LTDC_AccumulatedHBP = 40;
/* Configure accumulated vertical back porch */
LTDC_InitStruct.LTDC_AccumulatedVBP = 23;
/* Configure accumulated active width */
LTDC_InitStruct.LTDC_AccumulatedActiveW = 840;
/* Configure accumulated active height */
LTDC_InitStruct.LTDC_AccumulatedActiveH = 503;
/* Configure total width */
LTDC_InitStruct.LTDC_TotalWidth = 880;
/* Configure total height */
LTDC_InitStruct.LTDC_TotalHeigh = 516;
LTDC_Init(<DC_InitStruct);
/* Configure R,G,B component values for LCD background color */
LTDC_InitStruct.LTDC_BackgroundRedValue = 0;
LTDC_InitStruct.LTDC_BackgroundGreenValue = 0;
LTDC_InitStruct.LTDC_BackgroundBlueValue = 0;
LTDC_Init(<DC_InitStruct);
/* LTDC initialization end -------------------------------------------------*/
/* Layer1 Configuration ----------------------------------------------------*/
/* 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 + 160 -1 */
LTDC_Layer_InitStruct.LTDC_HorizontalStart = 41;
LTDC_Layer_InitStruct.LTDC_HorizontalStop = (800 + 40);
LTDC_Layer_InitStruct.LTDC_VerticalStart = 24;
LTDC_Layer_InitStruct.LTDC_VerticalStop = 480 + 23;
/* Pixel Format configuration*/
LTDC_Layer_InitStruct.LTDC_PixelFormat = LTDC_Pixelformat_RGB565;
/* Alpha constant (255 totally opaque) */
LTDC_Layer_InitStruct.LTDC_ConstantAlpha = 255;
/* Configure blending factors */
LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_PAxCA;
LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_PAxCA;
/* 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;
/* Input Address configuration */
LTDC_Layer_InitStruct.LTDC_CFBStartAdress = frameBuf0;
/* 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 = 240
number of bytes per pixel = 2 (pixel_format : RGB565)
*/
LTDC_Layer_InitStruct.LTDC_CFBLineLength = ((800 * 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 = (800 * 2);
/* configure the number of lines */
LTDC_Layer_InitStruct.LTDC_CFBLineNumber = 480;
LTDC_LayerInit(LTDC_Layer1, <DC_Layer_InitStruct);
/* Layer1 Configuration end ------------------------------------------------*/
LTDC_DitherCmd(ENABLE);
}
void cLCD_Clear(uint16_t Color)
{
uint32_t index = 0;
for (index = 0x00; index < 0x400000; index++)
{
*(volatile uint16_t *)(0xd0000000 + (2 * index)) = 0x0000;
}
for (index = 0x00; index < 0x400000; index++)
{
*(volatile uint16_t *)(0xd0000000 + (2 * index)) = 0x03f0;
}
for (index = 0x00; index < 480 * 800; index++)
{
*(volatile uint16_t *)(0xd0000000 + (2 * index)) = (uint16_t)Color;
}
}
int main(void)
{
/* Configure LCD */
LCD_Config();
/* Enable Layer 1 */
LTDC_LayerCmd(LTDC_Layer1, ENABLE);
/* Reload LTDC configuration */
LTDC_ReloadConfig(LTDC_IMReload);
/* Enable The LCD */
LTDC_Cmd(ENABLE);
cLCD_Clear(0x00f8);
//LCD_Clear(0xf800);
for(;;);
}
=======================================================================
=======================================================================
=======================================================================
#define LCD_PIXEL_WIDTH ((uint16_t)800)
#define LCD_PIXEL_HEIGHT ((uint16_t)480)
#define HSW ((uint16_t)48) /* Horizontal synchronization */
#define HBP ((uint16_t)40) /* Horizontal back porch */
#define HFP ((uint16_t)40) /* Horizontal front porch */
#define VSW ((uint16_t)3) /* Vertical synchronization */
#define VBP ((uint16_t)29) /* Vertical back porch */
#define VFP ((uint16_t)13) /* Vertical front porch */
#define HSTART (HBP)
#define HSTOP (LCD_PIXEL_WIDTH+HSTART)
#define VSTART (VBP)
#define VSTOP (LCD_PIXEL_HEIGHT+VSTART)
#define LCD_FRAME_BUFFER ((uint32_t)0xD0000000) //LCD·SDRAM
#define BUFFER_OFFSET ((uint32_t)0x60000)
void LCD_Init(void){
RCC_PLLSAIConfig(192, 7, 4);
RCC_LTDCCLKDivConfig(RCC_PLLSAIDivR_Div2);//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 */
LTDC_InitStruct.LTDC_HorizontalSync = HSW-1;
/* Configure vertical synchronization height */
LTDC_InitStruct.LTDC_VerticalSync = VSW-1;
/* Configure accumulated horizontal back porch */
LTDC_InitStruct.LTDC_AccumulatedHBP = HBP-1;
/* Configure accumulated vertical back porch */
LTDC_InitStruct.LTDC_AccumulatedVBP = VBP-1;
/* Configure accumulated active width */
LTDC_InitStruct.LTDC_AccumulatedActiveW = LCD_PIXEL_WIDTH + HBP-1;
/* Configure accumulated active height */
LTDC_InitStruct.LTDC_AccumulatedActiveH = LCD_PIXEL_HEIGHT + VBP-1;
/* Configure total width */
LTDC_InitStruct.LTDC_TotalWidth = LCD_PIXEL_WIDTH + HBP + HFP-1;
/* Configure total height */
LTDC_InitStruct.LTDC_TotalHeigh = LCD_PIXEL_HEIGHT + VBP + VFP-1;
LTDC_Init(<DC_InitStruct);
static void _LCD_InitController(int LayerIndex) 函数中：
xSize = LCD_GetXSizeEx(LayerIndex);
ySize = LCD_GetYSizeEx(LayerIndex);
LTDC_Layer_InitStruct.LTDC_HorizontalStart = HSTART;
LTDC_Layer_InitStruct.LTDC_HorizontalStop = (xSize + HSTART-1);
LTDC_Layer_InitStruct.LTDC_VerticalStart = VSTART;
LTDC_Layer_InitStruct.LTDC_VerticalStop = (ySize + VSTART-1);
}
void LCD_Init(void){
{
LTDC_InitTypeDef LTDC_InitStruct;
LTDC_Layer_InitTypeDef LTDC_Layer_InitStruct;
LTDC_Layer_TypeDef LTDC_Layerx;
/ * НЛ ініціалізації порту * /
LCD_GPIOInit ();
LCD_DisplayOff ();
/ * Включити LCD годинник * /
RCC_APB2PeriphClockCmd (RCC_APB2Periph_LTDC, то ENABLE);
/ * Включити DMA відсутня * /
RCC_AHB1PeriphClockCmd (RCC_AHB1Periph_DMA2D, то ENABLE);
/ * --- активний низький сигнал синхронізації по горизонталі * /
LTDC_InitStruct.LTDC_HSPolarity = LTDC_HSPolarity_AL;
/ * --- активний низький рівень сигналу вертикальної синхронізації сигналу * /
LTDC_InitStruct.LTDC_VSPolarity = LTDC_VSPolarity_AL;
/ * дані дозволяють активний низький сигнал --- * /
LTDC_InitStruct.LTDC_DEPolarity = LTDC_DEPolarity_AL;
/ * * конфігурація пікселя годинник --- /
//LTDC_InitStruct.LTDC_PCPolarity = LTDC_DEPolarity_AL;
LTDC_InitStruct.LTDC_PCPolarity = LTDC_PCPolarity_IPC;
/ * встановити підсвічування ЖК - дисплея * /
LTDC_InitStruct.LTDC_BackgroundRedValue = 0;
LTDC_InitStruct.LTDC_BackgroundGreenValue = 0;
LTDC_InitStruct.LTDC_BackgroundBlueValue = 0;
/ *
**************************** ****************************
* PLLSAI_VCO PLLSAI_N ВШЕ * = / LL_M. 8 * = 192 / 192MHz. 8 =
* = PLLLCDCLK LLSAI_VCO / LLSAI_R = 192/3 = 64 Мгц
* LTDC тактова частота = LLLCDCLK / 64-RCC_PLLSAIDivR = / 2 = 32 Мгц
******** ************************************************** ******************
* /
RCC_PLLSAIConfig (192,. 7, 3);
RCC_LTDCCLKDivConfig (RCC_PLLSAIDivR_Div4);
/ * включити PLLSAI годинник * /
RCC_PLLSAICmd (Розблокування);
/ * очікування PLLSAI годинник * /
цей час (RCC_GetFlagStatus (RCC_FLAG_PLLSAIRDY) == скидання) {}
/ * ширина * Налаштувати Горизонтальна синхронізація /
LTDC_InitStruct.LTDC_HorizontalSync = 39;
/ * Вертикальне Число висоти Налаштування синхронізації * /
LTDC_InitStruct.LTDC_VerticalSync = 19;
/ * Налаштувати Накопичена Горизонтальні Назад * Веранда /
LTDC_InitStruct.LTDC_AccumulatedHBP = 45;
/ * * Налаштувати Накопичена Вертикальна Кількість заднього псування /
LTDC_InitStruct.LTDC_AccumulatedVBP = 22;
/ * ширина * Налаштувати Накопичена Active /
LTDC_InitStruct.LTDC_AccumulatedActiveW = 845;
/ * * Налаштувати Накопичена Активна висота /
LTDC_InitStruct.LTDC_AccumulatedActiveH = 502;
/ * * Налаштувати Загальна ширина /
LTDC_InitStruct.LTDC_TotalWidth = тисячі п'ятьдесят-п'ять;
/ * * Налаштувати Загальна висота /
LTDC_InitStruct.LTDC_TotalHeigh = 524;
LTDC_Init (<DC_InitStruct);
LTDC_ITConfig (LTDC_IER_LIE, то ENABLE);
NVIC_SetPriority (LTDC_IRQn, 0);
NVIC_EnableIRQ ( LTDC_IRQn);
DMA2D_ITConfig (DMA2D_CR_TCIE, то ENABLE);
NVIC_SetPriority (DMA2D_IRQn, 0);
NVIC_EnableIRQ (DMA2D_IRQn);
DMA2D-> IFCR = (U32) DMA2D_IFSR_CTCIF;
LTDC_Layer_InitStruct.LTDC_HorizontalStart = 46; // 46
// LTDC_Layer_InitStruct.LTDC_HorizontalStart = 70;
/ / LTDC_Layer_InitStruct.LTDC_HorizontalStop = (480 + 43 - 1);
LTDC_Layer_InitStruct.LTDC_HorizontalStop = (800 + 46 - 1);
LTDC_Layer_InitStruct.LTDC_VarticalStart = 23; // 23
// LTDC_Layer_InitStruct.LTDC_VerticalStop = (272 + 12 - 1);
LTDC_Layer_InitStruct. = LTDC_VerticalStop (480 + 23 - 1);
/ * ixel Формат конфігурації * /
LTDC_Layer_InitStruct.LTDC_PixelFormat = LTDC_Pixelformat_RGB565;
/ * Альфа Константа (255 Повністю непрозорий) * /
LTDC_Layer_InitStruct.LTDC_ConstantAlpha = 255;
/ * за замовчуванням колір конфігурації (Налаштувати А, R & л , то G, B компонент значення) * /
LTDC_Layer_InitStruct.LTDC_DefaultColorBlue = 0;
LTDC_Layer_InitStruct.LTDC_DefaultColorGreen = 0;
LTDC_Layer_InitStruct.LTDC_DefaultColorRed = 0;
LTDC_Layer_InitStruct.LTDC_DefaultColorAlpha = 0;
/ * * Налаштувати Viewpoint купажу Фактори /
LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_CA;
LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_CA;
/ * при довжині одного рядка пікселів в байтах + 3 в той час :
лінія Lenth = Активна висока ширина х кількість байт на піксель + 3
Активна висока ширина = LCD_PIXEL_WIDTH
кількість байтів на піксель = 2 (pixel_format: RGB565)
* /
LTDC_Layer_InitStruct.LTDC_CFBLineLength = // ((480 * 2) + 3);
LTDC_Layer_InitStruct.LTDC_CFBLineLength = ((800 * 2) + 3);
/ * в непроглядній на інкремент з на початку одного рядка пікселів до в The
Початок о даний рядок в байтах Далі, потім:
ITCH висока ширина = Активний X Кількість байт на піксель
* /
// LTDC_Layer_InitStruct.LTDC_CFBPitch = (480 * 2);
LTDC_Layer_InitStruct.LTDC_CFBPitch = (800 * 2);
/ * * Налаштувати на число рядків /
// LTDC_Layer_InitStruct.LTDC_CFBLineNumber = 272;
LTDC_Layer_InitStruct.LTDC_CFBLineNumber = 480;
/ * * способу введення адресної конфігурації /
LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER;
LTDC_LayerInit (LTDC_Layer1, <DC_Layer_InitStruct);
/ * * Налаштувати Layer2 /
// LTDC_Layer_InitStruct.LTDC_CFBStartAdress = LCD_FRAME_BUFFER + BUFFER_OFFSET;
// LTDC_Layer_InitStruct.LTDC_BlendingFactor_1 = LTDC_BlendingFactor1_PAxCA;
// LTDC_Layer_InitStruct.LTDC_BlendingFactor_2 = LTDC_BlendingFactor2_PAxCA;
// LTDC_LayerInit (LTDC_Layer2, <DC_Layer_InitStruct);
// LTDC_ReloadConfig (LTDC_IMReload);
/ * * Включити передній план і фоновий режим Шари /
LTDC_LayerCmd (LTDC_Layer1, то ENABLE) ;
// LTDC_LayerCmd (LTDC_Layer2, то ENABLE);
LTDC_ReloadConfig (LTDC_IMReload);
// LCD_DisplayOn ();
}
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