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rt-thread/bsp/stm32f429-disco/drivers/drv_lcd.c

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/*
* Copyright (c) 2006-2018, RT-Thread Development Team
*
* SPDX-License-Identifier: Apache-2.0
*
* Change Logs:
* Date Author Notes
* 2018-09-13 xuzhuoyi first implementation
*/
#include "drv_lcd.h"
#include <finsh.h>
//#define DEBUG
#ifdef DEBUG
#define DEBUG_PRINTF(...) rt_kprintf(__VA_ARGS__)
#else
#define DEBUG_PRINTF(...)
#endif
typedef struct
{
rt_uint16_t width;
rt_uint16_t height;
rt_uint16_t id;
rt_uint8_t dir; //Horizontal or vertical screen control: 0, vertical; 1, horizontal
rt_uint16_t wramcmd;
rt_uint16_t setxcmd;
rt_uint16_t setycmd;
} lcd_info_t;
typedef struct
{
volatile rt_uint16_t reg;
volatile rt_uint16_t ram;
} lcd_ili9341_t;
#define LCD_ILI9341_BASE ((rt_uint32_t)(0x60000000 | 0x0007FFFE))
#define ili9341 ((lcd_ili9341_t *) LCD_ILI9341_BASE)
//////////////////////////////////////////////////////////////////////////////////
//Definition of scan direction
#define L2R_U2D 0
#define L2R_D2U 1
#define R2L_U2D 2
#define R2L_D2U 3
#define U2D_L2R 4
#define U2D_R2L 5
#define D2U_L2R 6
#define D2U_R2L 7
#define DFT_SCAN_DIR L2R_U2D
static lcd_info_t lcddev;
LTDC_HandleTypeDef LtdcHandler;
static RCC_PeriphCLKInitTypeDef PeriphClkInitStruct;
/* Default LCD configuration with LCD Layer 1 */
static uint32_t ActiveLayer = 0;
SPI_HandleTypeDef hspi5;
static SPI_HandleTypeDef SpiHandle;
void delay_us(rt_uint32_t nus)
{
//rt_thread_delay(1);
while (nus--) {
__NOP();
}
}
void delay_ms(rt_uint32_t nms)
{
//rt_thread_delay((RT_TICK_PER_SECOND * nms + 999) / 1000);
while (nms--)
{
int i;
for (i = 0; i < 10000; i++)
{
__NOP();
}
}
}
/**
* @brief SPI MSP Init.
* @param hspi: SPI handle
*/
static void SPIx_MspInit(SPI_HandleTypeDef *hspi)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable SPIx clock */
DISCOVERY_SPIx_CLK_ENABLE();
/* Enable DISCOVERY_SPI GPIO clock */
DISCOVERY_SPIx_GPIO_CLK_ENABLE();
/* configure SPI SCK, MOSI and MISO */
GPIO_InitStructure.Pin = (DISCOVERY_SPIx_SCK_PIN | DISCOVERY_SPIx_MOSI_PIN | DISCOVERY_SPIx_MISO_PIN);
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_PULLDOWN;
GPIO_InitStructure.Speed = GPIO_SPEED_MEDIUM;
GPIO_InitStructure.Alternate = DISCOVERY_SPIx_AF;
HAL_GPIO_Init(DISCOVERY_SPIx_GPIO_PORT, &GPIO_InitStructure);
}
/**
* @brief Selects the LCD Layer.
* @param LayerIndex: the Layer foreground or background.
*/
void BSP_LCD_SelectLayer(uint32_t LayerIndex)
{
ActiveLayer = LayerIndex;
}
/**
* @brief Initializes the LTDC MSP.
*/
__weak void BSP_LCD_MspInit(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Enable the LTDC and DMA2D Clock */
__HAL_RCC_LTDC_CLK_ENABLE();
__HAL_RCC_DMA2D_CLK_ENABLE();
/* Enable GPIOs clock */
__HAL_RCC_GPIOA_CLK_ENABLE();
__HAL_RCC_GPIOB_CLK_ENABLE();
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
__HAL_RCC_GPIOF_CLK_ENABLE();
__HAL_RCC_GPIOG_CLK_ENABLE();
/* GPIOs Configuration */
/*
+------------------------+-----------------------+----------------------------+
+ LCD pins assignment +
+------------------------+-----------------------+----------------------------+
| LCD_TFT R2 <-> PC.10 | 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_InitStructure.Pin = GPIO_PIN_3 | GPIO_PIN_4 | GPIO_PIN_6 |
GPIO_PIN_11 | GPIO_PIN_12;
GPIO_InitStructure.Mode = GPIO_MODE_AF_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
GPIO_InitStructure.Alternate= GPIO_AF14_LTDC;
HAL_GPIO_Init(GPIOA, &GPIO_InitStructure);
/* GPIOB configuration */
GPIO_InitStructure.Pin = GPIO_PIN_8 | \
GPIO_PIN_9 | GPIO_PIN_10 | GPIO_PIN_11;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
/* GPIOC configuration */
GPIO_InitStructure.Pin = GPIO_PIN_6 | GPIO_PIN_7 | GPIO_PIN_10;
HAL_GPIO_Init(GPIOC, &GPIO_InitStructure);
/* GPIOD configuration */
GPIO_InitStructure.Pin = GPIO_PIN_3 | GPIO_PIN_6;
HAL_GPIO_Init(GPIOD, &GPIO_InitStructure);
/* GPIOF configuration */
GPIO_InitStructure.Pin = GPIO_PIN_10;
HAL_GPIO_Init(GPIOF, &GPIO_InitStructure);
/* GPIOG configuration */
GPIO_InitStructure.Pin = GPIO_PIN_6 | GPIO_PIN_7 | \
GPIO_PIN_11;
HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
/* GPIOB configuration */
GPIO_InitStructure.Pin = GPIO_PIN_0 | GPIO_PIN_1;
GPIO_InitStructure.Alternate= GPIO_AF9_LTDC;
HAL_GPIO_Init(GPIOB, &GPIO_InitStructure);
/* GPIOG configuration */
GPIO_InitStructure.Pin = GPIO_PIN_10 | GPIO_PIN_12;
HAL_GPIO_Init(GPIOG, &GPIO_InitStructure);
}
/**
* @brief SPIx error treatment function.
*/
static void SPIx_Error(void)
{
/* De-initialize the SPI communication BUS */
HAL_SPI_DeInit(&hspi5);
/* Re- Initialize the SPI communication BUS */
/* SPI5 parameter configuration*/
hspi5.Instance = SPI5;
hspi5.Init.Mode = SPI_MODE_MASTER;
hspi5.Init.Direction = SPI_DIRECTION_2LINES;
hspi5.Init.DataSize = SPI_DATASIZE_8BIT;
hspi5.Init.CLKPolarity = SPI_POLARITY_LOW;
hspi5.Init.CLKPhase = SPI_PHASE_1EDGE;
hspi5.Init.NSS = SPI_NSS_SOFT;
hspi5.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
hspi5.Init.FirstBit = SPI_FIRSTBIT_MSB;
hspi5.Init.TIMode = SPI_TIMODE_DISABLE;
hspi5.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLE;
hspi5.Init.CRCPolynomial = 10;
if (HAL_SPI_Init(&hspi5) != HAL_OK)
{
//_Error_Handler(__FILE__, __LINE__);
}
}
/**
* @brief Writes a byte to device.
* @param Value: value to be written
*/
static void SPIx_Write(uint16_t Value)
{
HAL_StatusTypeDef status = HAL_OK;
status = HAL_SPI_Transmit(&hspi5, (uint8_t*) &Value, 1, 0x1000);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initialize the BUS */
SPIx_Error();
}
}
/**
* @brief Reads 4 bytes from device.
* @param ReadSize: Number of bytes to read (max 4 bytes)
* @retval Value read on the SPI
*/
static uint32_t SPIx_Read(uint8_t ReadSize)
{
HAL_StatusTypeDef status = HAL_OK;
uint32_t readvalue;
status = HAL_SPI_Receive(&hspi5, (uint8_t*) &readvalue, ReadSize, 0x1000);
/* Check the communication status */
if(status != HAL_OK)
{
/* Re-Initialize the BUS */
SPIx_Error();
}
return readvalue;
}
/**
* @brief Configures the LCD_SPI interface.
*/
void LCD_IO_Init(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/* Configure NCS in Output Push-Pull mode */
LCD_WRX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = LCD_WRX_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_WRX_GPIO_PORT, &GPIO_InitStructure);
LCD_RDX_GPIO_CLK_ENABLE();
GPIO_InitStructure.Pin = LCD_RDX_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_RDX_GPIO_PORT, &GPIO_InitStructure);
/* Configure the LCD Control pins ----------------------------------------*/
LCD_NCS_GPIO_CLK_ENABLE();
/* Configure NCS in Output Push-Pull mode */
GPIO_InitStructure.Pin = LCD_NCS_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Speed = GPIO_SPEED_FAST;
HAL_GPIO_Init(LCD_NCS_GPIO_PORT, &GPIO_InitStructure);
/* Set or Reset the control line */
LCD_CS_LOW();
LCD_CS_HIGH();
/* SPI configuration -----------------------------------------------------*/
SpiHandle.Instance = DISCOVERY_SPIx;
/* SPI baudrate is set to 5.6 MHz (PCLK2/SPI_BaudRatePrescaler = 90/16 = 5.625 MHz)
to verify these constraints:
- ILI9341 LCD SPI interface max baudrate is 10MHz for write and 6.66MHz for read
- l3gd20 SPI interface max baudrate is 10MHz for write/read
- PCLK2 frequency is set to 90 MHz
*/
SpiHandle.Init.BaudRatePrescaler = SPI_BAUDRATEPRESCALER_16;
/* On STM32F429I-Discovery, LCD ID cannot be read then keep a common configuration */
/* for LCD and GYRO (SPI_DIRECTION_2LINES) */
/* Note: To read a register a LCD, SPI_DIRECTION_1LINE should be set */
SpiHandle.Init.Direction = SPI_DIRECTION_2LINES;
SpiHandle.Init.CLKPhase = SPI_PHASE_1EDGE;
SpiHandle.Init.CLKPolarity = SPI_POLARITY_LOW;
SpiHandle.Init.CRCCalculation = SPI_CRCCALCULATION_DISABLED;
SpiHandle.Init.CRCPolynomial = 7;
SpiHandle.Init.DataSize = SPI_DATASIZE_8BIT;
SpiHandle.Init.FirstBit = SPI_FIRSTBIT_MSB;
SpiHandle.Init.NSS = SPI_NSS_SOFT;
SpiHandle.Init.TIMode = SPI_TIMODE_DISABLED;
SpiHandle.Init.Mode = SPI_MODE_MASTER;
SPIx_MspInit(&SpiHandle);
HAL_SPI_Init(&SpiHandle);
}
/**
* @brief Writes to the selected LCD register.
* @param LCD_Reg: address of the selected register.
* @retval None
*/
void ili9341_WriteReg(uint8_t LCD_Reg)
{
/* Reset WRX to send command */
LCD_WRX_LOW();
/* Reset LCD control line(/CS) and Send command */
LCD_CS_LOW();
SPIx_Write(LCD_Reg);
/* Deselect: Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Writes data to the selected LCD register.
* @param LCD_Reg: address of the selected register.
* @retval None
*/
void ili9341_WriteData(uint16_t RegValue)
{
/* Set WRX to send data */
LCD_WRX_HIGH();
/* Reset LCD control line(/CS) and Send data */
LCD_CS_LOW();
SPIx_Write(RegValue);
/* Deselect: Chip Select high */
LCD_CS_HIGH();
}
/**
* @brief Reads the selected LCD Register.
* @param RegValue: Address of the register to read
* @param ReadSize: Number of bytes to read
* @retval LCD Register Value.
*/
uint32_t ili9341_ReadData(uint16_t RegValue, uint8_t ReadSize)
{
uint32_t readvalue = 0;
/* Select: Chip Select low */
LCD_CS_LOW();
/* Reset WRX to send command */
LCD_WRX_LOW();
SPIx_Write(RegValue);
readvalue = SPIx_Read(ReadSize);
/* Set WRX to send data */
LCD_WRX_HIGH();
/* Deselect: Chip Select high */
LCD_CS_HIGH();
return readvalue;
}
/**
* @brief Enables the Display.
*/
void BSP_LCD_DisplayOn(void)
{
/* Display On */
ili9341_WriteReg(LCD_DISPLAY_ON);
}
/**
* @brief Disables the Display.
*/
void BSP_LCD_DisplayOff(void)
{
/* Display Off */
ili9341_WriteReg(LCD_DISPLAY_OFF);
}
void ili9341_Init(void)
{
/* Initialize ILI9341 low level bus layer ----------------------------------*/
LCD_IO_Init();
/* Configure LCD */
ili9341_WriteReg(0xCA);
ili9341_WriteData(0xC3);
ili9341_WriteData(0x08);
ili9341_WriteData(0x50);
ili9341_WriteReg(LCD_POWERB);
ili9341_WriteData(0x00);
ili9341_WriteData(0xC1);
ili9341_WriteData(0x30);
ili9341_WriteReg(LCD_POWER_SEQ);
ili9341_WriteData(0x64);
ili9341_WriteData(0x03);
ili9341_WriteData(0x12);
ili9341_WriteData(0x81);
ili9341_WriteReg(LCD_DTCA);
ili9341_WriteData(0x85);
ili9341_WriteData(0x00);
ili9341_WriteData(0x78);
ili9341_WriteReg(LCD_POWERA);
ili9341_WriteData(0x39);
ili9341_WriteData(0x2C);
ili9341_WriteData(0x00);
ili9341_WriteData(0x34);
ili9341_WriteData(0x02);
ili9341_WriteReg(LCD_PRC);
ili9341_WriteData(0x20);
ili9341_WriteReg(LCD_DTCB);
ili9341_WriteData(0x00);
ili9341_WriteData(0x00);
ili9341_WriteReg(LCD_FRMCTR1);
ili9341_WriteData(0x00);
ili9341_WriteData(0x1B);
ili9341_WriteReg(LCD_DFC);
ili9341_WriteData(0x0A);
ili9341_WriteData(0xA2);
ili9341_WriteReg(LCD_POWER1);
ili9341_WriteData(0x10);
ili9341_WriteReg(LCD_POWER2);
ili9341_WriteData(0x10);
ili9341_WriteReg(LCD_VCOM1);
ili9341_WriteData(0x45);
ili9341_WriteData(0x15);
ili9341_WriteReg(LCD_VCOM2);
ili9341_WriteData(0x90);
ili9341_WriteReg(LCD_MAC);
ili9341_WriteData(0xC8);
ili9341_WriteReg(LCD_3GAMMA_EN);
ili9341_WriteData(0x00);
ili9341_WriteReg(LCD_RGB_INTERFACE);
ili9341_WriteData(0xC2);
ili9341_WriteReg(LCD_DFC);
ili9341_WriteData(0x0A);
ili9341_WriteData(0xA7);
ili9341_WriteData(0x27);
ili9341_WriteData(0x04);
/* Colomn address set */
ili9341_WriteReg(LCD_COLUMN_ADDR);
ili9341_WriteData(0x00);
ili9341_WriteData(0x00);
ili9341_WriteData(0x00);
ili9341_WriteData(0xEF);
/* Page address set */
ili9341_WriteReg(LCD_PAGE_ADDR);
ili9341_WriteData(0x00);
ili9341_WriteData(0x00);
ili9341_WriteData(0x01);
ili9341_WriteData(0x3F);
ili9341_WriteReg(LCD_INTERFACE);
ili9341_WriteData(0x01);
ili9341_WriteData(0x00);
ili9341_WriteData(0x06);
ili9341_WriteReg(LCD_GRAM);
delay_ms(200);
ili9341_WriteReg(LCD_GAMMA);
ili9341_WriteData(0x01);
ili9341_WriteReg(LCD_PGAMMA);
ili9341_WriteData(0x0F);
ili9341_WriteData(0x29);
ili9341_WriteData(0x24);
ili9341_WriteData(0x0C);
ili9341_WriteData(0x0E);
ili9341_WriteData(0x09);
ili9341_WriteData(0x4E);
ili9341_WriteData(0x78);
ili9341_WriteData(0x3C);
ili9341_WriteData(0x09);
ili9341_WriteData(0x13);
ili9341_WriteData(0x05);
ili9341_WriteData(0x17);
ili9341_WriteData(0x11);
ili9341_WriteData(0x00);
ili9341_WriteReg(LCD_NGAMMA);
ili9341_WriteData(0x00);
ili9341_WriteData(0x16);
ili9341_WriteData(0x1B);
ili9341_WriteData(0x04);
ili9341_WriteData(0x11);
ili9341_WriteData(0x07);
ili9341_WriteData(0x31);
ili9341_WriteData(0x33);
ili9341_WriteData(0x42);
ili9341_WriteData(0x05);
ili9341_WriteData(0x0C);
ili9341_WriteData(0x0A);
ili9341_WriteData(0x28);
ili9341_WriteData(0x2F);
ili9341_WriteData(0x0F);
ili9341_WriteReg(LCD_SLEEP_OUT);
delay_ms(200);
ili9341_WriteReg(LCD_DISPLAY_ON);
/* GRAM start writing */
ili9341_WriteReg(LCD_GRAM);
}
/**
* @brief Initializes the LCD layers.
* @param LayerIndex: the layer foreground or background.
* @param FB_Address: the layer frame buffer.
*/
void BSP_LCD_LayerDefaultInit(uint16_t LayerIndex, uint32_t FB_Address)
{
LTDC_LayerCfgTypeDef Layercfg;
/* Layer Init */
Layercfg.WindowX0 = 0;
Layercfg.WindowX1 = 240;
Layercfg.WindowY0 = 0;
Layercfg.WindowY1 = 320;
Layercfg.PixelFormat = LTDC_PIXEL_FORMAT_RGB565;
Layercfg.FBStartAdress = FB_Address;
Layercfg.Alpha = 255;
Layercfg.Alpha0 = 0;
Layercfg.Backcolor.Blue = 0;
Layercfg.Backcolor.Green = 0;
Layercfg.Backcolor.Red = 0;
Layercfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
Layercfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
Layercfg.ImageWidth = 240;
Layercfg.ImageHeight = 320;
HAL_LTDC_ConfigLayer(&LtdcHandler, &Layercfg, LayerIndex);
//DrawProp[LayerIndex].BackColor = LCD_COLOR_WHITE;
//DrawProp[LayerIndex].pFont = &Font24;
//DrawProp[LayerIndex].TextColor = LCD_COLOR_BLACK;
/* Dithering activation */
HAL_LTDC_EnableDither(&LtdcHandler);
}
uint8_t BSP_LCD_Init(void)
{
/* On STM32F429I-DISCO, it is not possible to read ILI9341 ID because */
/* PIN EXTC is not connected to VDD and then LCD_READ_ID4 is not accessible. */
/* In this case, ReadID function is bypassed.*/
/*if(ili9341_drv.ReadID() == ILI9341_ID)*/
/* LTDC Configuration ----------------------------------------------------*/
LtdcHandler.Instance = LTDC;
/* Timing configuration (Typical configuration from ILI9341 datasheet)
HSYNC=10 (9+1)
HBP=20 (29-10+1)
ActiveW=240 (269-20-10+1)
HFP=10 (279-240-20-10+1)
VSYNC=2 (1+1)
VBP=2 (3-2+1)
ActiveH=320 (323-2-2+1)
VFP=4 (327-320-2-2+1)
*/
/* Configure horizontal synchronization width */
LtdcHandler.Init.HorizontalSync = ILI9341_HSYNC;
/* Configure vertical synchronization height */
LtdcHandler.Init.VerticalSync = ILI9341_VSYNC;
/* Configure accumulated horizontal back porch */
LtdcHandler.Init.AccumulatedHBP = ILI9341_HBP;
/* Configure accumulated vertical back porch */
LtdcHandler.Init.AccumulatedVBP = ILI9341_VBP;
/* Configure accumulated active width */
LtdcHandler.Init.AccumulatedActiveW = 269;
/* Configure accumulated active height */
LtdcHandler.Init.AccumulatedActiveH = 323;
/* Configure total width */
LtdcHandler.Init.TotalWidth = 279;
/* Configure total height */
LtdcHandler.Init.TotalHeigh = 327;
/* Configure R,G,B component values for LCD background color */
LtdcHandler.Init.Backcolor.Red= 0;
LtdcHandler.Init.Backcolor.Blue= 0;
LtdcHandler.Init.Backcolor.Green= 0;
/* LCD clock configuration */
/* PLLSAI_VCO Input = HSE_VALUE/PLL_M = 1 Mhz */
/* PLLSAI_VCO Output = PLLSAI_VCO Input * PLLSAIN = 192 Mhz */
/* PLLLCDCLK = PLLSAI_VCO Output/PLLSAIR = 192/4 = 48 Mhz */
/* LTDC clock frequency = PLLLCDCLK / LTDC_PLLSAI_DIVR_8 = 48/4 = 6Mhz */
PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_LTDC;
PeriphClkInitStruct.PLLSAI.PLLSAIN = 192;
PeriphClkInitStruct.PLLSAI.PLLSAIR = 4;
PeriphClkInitStruct.PLLSAIDivR = RCC_PLLSAIDIVR_8;
HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct);
/* Polarity */
LtdcHandler.Init.HSPolarity = LTDC_HSPOLARITY_AL;
LtdcHandler.Init.VSPolarity = LTDC_VSPOLARITY_AL;
LtdcHandler.Init.DEPolarity = LTDC_DEPOLARITY_AL;
LtdcHandler.Init.PCPolarity = LTDC_PCPOLARITY_IPC;
BSP_LCD_MspInit();
HAL_LTDC_Init(&LtdcHandler);
/* Select the device */
//LcdDrv = &ili9341_drv;
/* LCD Init */
ili9341_Init();
/* Initialize the SDRAM */
//BSP_SDRAM_Init();
/* Initialize the font */
//BSP_LCD_SetFont(&LCD_DEFAULT_FONT);
return 0;
}
void BSP_LCD_DrawPixel(uint16_t Xpos, uint16_t Ypos, uint32_t RGB_Code)
{
/* Write data value to all SDRAM memory */
*(__IO uint32_t*) (LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(Ypos*240 + Xpos))) = RGB_Code;
}
void BSP_LCD_DrawLine(uint32_t pixel, uint16_t X1, uint16_t Y1, uint16_t X2, uint16_t Y2)
{
int16_t deltax = 0, deltay = 0, x = 0, y = 0, xinc1 = 0, xinc2 = 0,
yinc1 = 0, yinc2 = 0, den = 0, num = 0, numadd = 0, numpixels = 0,
curpixel = 0;
deltax = ABS(X2 - X1); /* The difference between the x's */
deltay = ABS(Y2 - Y1); /* The difference between the y's */
x = X1; /* Start x off at the first pixel */
y = Y1; /* Start y off at the first pixel */
if (X2 >= X1) /* The x-values are increasing */
{
xinc1 = 1;
xinc2 = 1;
}
else /* The x-values are decreasing */
{
xinc1 = -1;
xinc2 = -1;
}
if (Y2 >= Y1) /* The y-values are increasing */
{
yinc1 = 1;
yinc2 = 1;
}
else /* The y-values are decreasing */
{
yinc1 = -1;
yinc2 = -1;
}
if (deltax >= deltay) /* There is at least one x-value for every y-value */
{
xinc1 = 0; /* Don't change the x when numerator >= denominator */
yinc2 = 0; /* Don't change the y for every iteration */
den = deltax;
num = deltax / 2;
numadd = deltay;
numpixels = deltax; /* There are more x-values than y-values */
}
else /* There is at least one y-value for every x-value */
{
xinc2 = 0; /* Don't change the x for every iteration */
yinc1 = 0; /* Don't change the y when numerator >= denominator */
den = deltay;
num = deltay / 2;
numadd = deltax;
numpixels = deltay; /* There are more y-values than x-values */
}
for (curpixel = 0; curpixel <= numpixels; curpixel++)
{
BSP_LCD_DrawPixel(x, y, pixel); /* Draw the current pixel */
num += numadd; /* Increase the numerator by the top of the fraction */
if (num >= den) /* Check if numerator >= denominator */
{
num -= den; /* Calculate the new numerator value */
x += xinc1; /* Change the x as appropriate */
y += yinc1; /* Change the y as appropriate */
}
x += xinc2; /* Change the x as appropriate */
y += yinc2; /* Change the y as appropriate */
}
}
rt_uint16_t ili9341_bgr2rgb(rt_uint16_t value)
{
rt_uint16_t red, green, blue;
blue = (value >> 0) & 0x1f;
green = (value >> 5) & 0x3f;
red = (value >> 11) & 0x1f;
return (blue << 11) + (green << 5) + (red << 0);
}
void _lcd_low_level_init(void)
{
GPIO_InitTypeDef GPIO_InitStruct;
/* GPIO Ports Clock Enable */
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOC, CSX_Pin, GPIO_PIN_RESET);
/*Configure GPIO pin Output Level */
HAL_GPIO_WritePin(GPIOD, RDX_Pin|WRX_DCX_Pin, GPIO_PIN_RESET);
/*Configure GPIO pins : NCS_MEMS_SPI_Pin CSX_Pin OTG_FS_PSO_Pin */
GPIO_InitStruct.Pin = CSX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOC, &GPIO_InitStruct);
/*Configure GPIO pins : RDX_Pin WRX_DCX_Pin */
GPIO_InitStruct.Pin = RDX_Pin|WRX_DCX_Pin;
GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStruct.Pull = GPIO_NOPULL;
GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
HAL_GPIO_Init(GPIOD, &GPIO_InitStruct);
BSP_LCD_Init();
BSP_LCD_LayerDefaultInit(0,0xD0000000);
BSP_LCD_SelectLayer(0);
BSP_LCD_DisplayOn();
lcddev.width = 240;
lcddev.height = 320;
//ili9341_set_display_direction(0);
//HAL_GPIO_WritePin(GPIOB, GPIO_PIN_5, GPIO_PIN_SET);
}
static rt_err_t lcd_init(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t lcd_open(rt_device_t dev, rt_uint16_t oflag)
{
return RT_EOK;
}
static rt_err_t lcd_close(rt_device_t dev)
{
return RT_EOK;
}
static rt_err_t lcd_control(rt_device_t dev, int cmd, void *args)
{
switch (cmd)
{
case RTGRAPHIC_CTRL_GET_INFO:
{
struct rt_device_graphic_info *info;
info = (struct rt_device_graphic_info*) args;
RT_ASSERT(info != RT_NULL);
info->bits_per_pixel = 16;
info->pixel_format = RTGRAPHIC_PIXEL_FORMAT_RGB565;
info->framebuffer = (rt_uint8_t *)LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress;
info->width = 240;
info->height = 320;
}
break;
case RTGRAPHIC_CTRL_RECT_UPDATE:
/* nothong to be done */
break;
default:
break;
}
return RT_EOK;
}
static void ili9341_lcd_set_pixel(const char* pixel, int x, int y)
{
*(__IO uint16_t*)(LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(y * 240 + x))) = *(uint16_t *)pixel;
}
#ifdef RT_USING_FINSH
static void lcd_set_pixel(uint16_t color, int x, int y)
{
rt_kprintf("lcd set pixel, color: %X, x: %d, y: %d", color, x, y);
ili9341_lcd_set_pixel((const char *)&color, x, y);
}
FINSH_FUNCTION_EXPORT(lcd_set_pixel, set pixel in lcd display);
#endif
static void ili9341_lcd_get_pixel(char* pixel, int x, int y)
{
uint32_t ret = 0;
if(LtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB8888)
{
/* Read data value from SDRAM memory */
ret = *(__IO uint32_t*) (LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(y * 240 + x)));
}
else if(LtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB888)
{
/* Read data value from SDRAM memory */
ret = (*(__IO uint32_t*) (LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (4*(y*240 + x))) & 0x00FFFFFF);
}
else if((LtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_RGB565) || \
(LtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_ARGB4444) || \
(LtdcHandler.LayerCfg[ActiveLayer].PixelFormat == LTDC_PIXEL_FORMAT_AL88))
{
/* Read data value from SDRAM memory */
ret = *(__IO uint16_t*) (LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(y*240 + x)));
}
else
{
/* Read data value from SDRAM memory */
ret = *(__IO uint8_t*) (LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(y*240 + x)));
}
*pixel = ret;
}
#ifdef RT_USING_FINSH
static void lcd_get_pixel(int x, int y)
{
uint16_t pixel;
ili9341_lcd_get_pixel((char *)&pixel, x, y);
rt_kprintf("lcd get pixel, pixel: 0x%X, x: %d, y: %d", pixel, x, y);
}
FINSH_FUNCTION_EXPORT(lcd_get_pixel, get pixel in lcd display);
#endif
static void ili9341_lcd_draw_hline(const char* pixel, int x1, int x2, int y)
{
BSP_LCD_DrawLine(*pixel, x1, y, x2, y);
}
#ifdef RT_USING_FINSH
static void lcd_draw_hline(uint16_t pixel, int x1, int x2, int y)
{
ili9341_lcd_draw_hline((const char *)&pixel, x1, x2, y);
rt_kprintf("lcd draw hline, pixel: 0x%X, x1: %d, x2: %d, y: %d", pixel, x1, x2, y);
}
FINSH_FUNCTION_EXPORT(lcd_draw_hline, draw hline in lcd display);
#endif
static void ili9341_lcd_draw_vline(const char* pixel, int x, int y1, int y2)
{
BSP_LCD_DrawLine(*pixel, x, y1, x, y2);
}
#ifdef RT_USING_FINSH
static void lcd_draw_vline(uint16_t pixel, int x, int y1, int y2)
{
ili9341_lcd_draw_vline((const char *)&pixel, x, y1, y2);
rt_kprintf("lcd draw hline, pixel: 0x%X, x: %d, y: %d", pixel, y1, y2);
}
FINSH_FUNCTION_EXPORT(lcd_draw_vline, draw vline in lcd display);
#endif
static void ili9341_lcd_blit_line(const char* pixels, int x, int y, rt_size_t size)
{
int i = 0;
while(size--)
*(__IO uint16_t*) (LtdcHandler.LayerCfg[ActiveLayer].FBStartAdress + (2*(y*240 + x + i++))) = *(uint16_t *)pixels++;
}
#ifdef RT_USING_FINSH
#define LINE_LEN 30
static void lcd_blit_line(int x, int y)
{
uint16_t pixels[LINE_LEN];
int i;
for (i = 0; i < LINE_LEN; i++)
{
pixels[i] = i * 40 + 50;
}
ili9341_lcd_blit_line((const char *)pixels, x, y, LINE_LEN);
rt_kprintf("lcd blit line, x: %d, y: %d", x, y);
}
FINSH_FUNCTION_EXPORT(lcd_blit_line, draw blit line in lcd display);
#endif
static int rt_hw_lcd_init(void)
{
_lcd_low_level_init();
static struct rt_device lcd_device;
static struct rt_device_graphic_ops ili9341_ops =
{
ili9341_lcd_set_pixel,
ili9341_lcd_get_pixel,
ili9341_lcd_draw_hline,
ili9341_lcd_draw_vline,
ili9341_lcd_blit_line
};
/* register lcd device */
lcd_device.type = RT_Device_Class_Graphic;
lcd_device.init = lcd_init;
lcd_device.open = lcd_open;
lcd_device.close = lcd_close;
lcd_device.control = lcd_control;
lcd_device.read = RT_NULL;
lcd_device.write = RT_NULL;
lcd_device.user_data = &ili9341_ops;
/* register graphic device driver */
rt_device_register(&lcd_device, "lcd",
RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);
return 0;
}
INIT_BOARD_EXPORT(rt_hw_lcd_init);
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