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/**
******************************************************************************
* @file st7789h2.c
* @author MCD Application Team
* @brief This file includes the LCD driver for st7789h2 LCD.
******************************************************************************
* @attention
*
* Copyright (c) 2016 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "st7789h2.h"
/** @addtogroup BSP
* @{
*/
/** @addtogroup Components
* @{
*/
/** @defgroup ST7789H2
* @brief This file provides a set of functions needed to drive the
* FRIDA FRD154BP2901 LCD.
* @{
*/
/** @defgroup ST7789H2_Private_TypesDefinitions ST7789H2 Private TypesDefinitions
* @{
*/
typedef struct {
uint8_t red;
uint8_t green;
uint8_t blue;
} ST7789H2_Rgb888;
/**
* @}
*/
/** @defgroup ST7789H2_Private_Defines ST7789H2 Private Defines
* @{
*/
/**
* @}
*/
/** @defgroup ST7789H2_Private_Macros ST7789H2 Private Macros
* @{
*/
/**
* @}
*/
/** @defgroup ST7789H2_Private_Variables ST7789H2 Private Variables
* @{
*/
LCD_DrvTypeDef ST7789H2_drv =
{
ST7789H2_Init,
ST7789H2_ReadID,
ST7789H2_DisplayOn,
ST7789H2_DisplayOff,
ST7789H2_SetCursor,
ST7789H2_WritePixel,
ST7789H2_ReadPixel,
ST7789H2_SetDisplayWindow,
ST7789H2_DrawHLine,
ST7789H2_DrawVLine,
ST7789H2_GetLcdPixelWidth,
ST7789H2_GetLcdPixelHeight,
ST7789H2_DrawBitmap,
ST7789H2_DrawRGBImage,
};
static uint16_t WindowsXstart = 0;
static uint16_t WindowsYstart = 0;
static uint16_t WindowsXend = ST7789H2_LCD_PIXEL_WIDTH-1;
static uint16_t WindowsYend = ST7789H2_LCD_PIXEL_HEIGHT-1;
/**
* @}
*/
/** @defgroup ST7789H2_Private_FunctionPrototypes ST7789H2 Private FunctionPrototypes
* @{
*/
static ST7789H2_Rgb888 ST7789H2_ReadPixel_rgb888(uint16_t Xpos, uint16_t Ypos);
static void ST7789H2_DrawRGBHLine(uint16_t Xpos, uint16_t Ypos, uint16_t Xsize, uint8_t *pdata);
/**
* @}
*/
/** @defgroup ST7789H2_Private_Functions ST7789H2 Private Functions
* @{
*/
/**
* @brief Initialize the st7789h2 LCD Component.
* @param None
* @retval None
*/
void ST7789H2_Init(void)
{
uint8_t parameter[14];
/* Initialize st7789h2 low level bus layer ----------------------------------*/
LCD_IO_Init();
/* Sleep In Command */
ST7789H2_WriteReg(ST7789H2_SLEEP_IN, (uint8_t*)NULL, 0);
/* Wait for 10ms */
LCD_IO_Delay(10);
/* SW Reset Command */
ST7789H2_WriteReg(0x01, (uint8_t*)NULL, 0);
/* Wait for 200ms */
LCD_IO_Delay(200);
/* Sleep Out Command */
ST7789H2_WriteReg(ST7789H2_SLEEP_OUT, (uint8_t*)NULL, 0);
/* Wait for 120ms */
LCD_IO_Delay(120);
/* Normal display for Driver Down side */
parameter[0] = 0x00;
ST7789H2_WriteReg(ST7789H2_NORMAL_DISPLAY, parameter, 1);
/* Color mode 16bits/pixel */
parameter[0] = 0x05;
ST7789H2_WriteReg(ST7789H2_COLOR_MODE, parameter, 1);
/* Display inversion On */
ST7789H2_WriteReg(ST7789H2_DISPLAY_INVERSION, (uint8_t*)NULL, 0);
/* Set Column address CASET */
parameter[0] = 0x00;
parameter[1] = 0x00;
parameter[2] = 0x00;
parameter[3] = 0xEF;
ST7789H2_WriteReg(ST7789H2_CASET, parameter, 4);
/* Set Row address RASET */
parameter[0] = 0x00;
parameter[1] = 0x00;
parameter[2] = 0x00;
parameter[3] = 0xEF;
ST7789H2_WriteReg(ST7789H2_RASET, parameter, 4);
/*--------------- ST7789H2 Frame rate setting -------------------------------*/
/* PORCH control setting */
parameter[0] = 0x0C;
parameter[1] = 0x0C;
parameter[2] = 0x00;
parameter[3] = 0x33;
parameter[4] = 0x33;
ST7789H2_WriteReg(ST7789H2_PORCH_CTRL, parameter, 5);
/* GATE control setting */
parameter[0] = 0x35;
ST7789H2_WriteReg(ST7789H2_GATE_CTRL, parameter, 1);
/*--------------- ST7789H2 Power setting ------------------------------------*/
/* VCOM setting */
parameter[0] = 0x1F;
ST7789H2_WriteReg(ST7789H2_VCOM_SET, parameter, 1);
/* LCM Control setting */
parameter[0] = 0x2C;
ST7789H2_WriteReg(ST7789H2_LCM_CTRL, parameter, 1);
/* VDV and VRH Command Enable */
parameter[0] = 0x01;
parameter[1] = 0xC3;
ST7789H2_WriteReg(ST7789H2_VDV_VRH_EN, parameter, 2);
/* VDV Set */
parameter[0] = 0x20;
ST7789H2_WriteReg(ST7789H2_VDV_SET, parameter, 1);
/* Frame Rate Control in normal mode */
parameter[0] = 0x0F;
ST7789H2_WriteReg(ST7789H2_FR_CTRL, parameter, 1);
/* Power Control */
parameter[0] = 0xA4;
parameter[1] = 0xA1;
ST7789H2_WriteReg(ST7789H2_POWER_CTRL, parameter, 2);
/*--------------- ST7789H2 Gamma setting ------------------------------------*/
/* Positive Voltage Gamma Control */
parameter[0] = 0xD0;
parameter[1] = 0x08;
parameter[2] = 0x11;
parameter[3] = 0x08;
parameter[4] = 0x0C;
parameter[5] = 0x15;
parameter[6] = 0x39;
parameter[7] = 0x33;
parameter[8] = 0x50;
parameter[9] = 0x36;
parameter[10] = 0x13;
parameter[11] = 0x14;
parameter[12] = 0x29;
parameter[13] = 0x2D;
ST7789H2_WriteReg(ST7789H2_PV_GAMMA_CTRL, parameter, 14);
/* Negative Voltage Gamma Control */
parameter[0] = 0xD0;
parameter[1] = 0x08;
parameter[2] = 0x10;
parameter[3] = 0x08;
parameter[4] = 0x06;
parameter[5] = 0x06;
parameter[6] = 0x39;
parameter[7] = 0x44;
parameter[8] = 0x51;
parameter[9] = 0x0B;
parameter[10] = 0x16;
parameter[11] = 0x14;
parameter[12] = 0x2F;
parameter[13] = 0x31;
ST7789H2_WriteReg(ST7789H2_NV_GAMMA_CTRL, parameter, 14);
/* Display ON command */
ST7789H2_DisplayOn();
/* Tearing Effect Line On: Option (00h:VSYNC Interface OFF, 01h:VSYNC Interface ON) */
parameter[0] = 0x00;
ST7789H2_WriteReg(ST7789H2_TEARING_EFFECT, parameter, 1);
}
/**
* @brief Set the Display Orientation.
* @param orientation: ST7789H2_ORIENTATION_PORTRAIT, ST7789H2_ORIENTATION_LANDSCAPE
* or ST7789H2_ORIENTATION_LANDSCAPE_ROT180
* @retval None
*/
void ST7789H2_SetOrientation(uint32_t orientation)
{
uint8_t parameter[6];
if(orientation == ST7789H2_ORIENTATION_LANDSCAPE)
{
parameter[0] = 0x00;
}
else if(orientation == ST7789H2_ORIENTATION_LANDSCAPE_ROT180)
{
/* Vertical Scrolling Definition */
/* TFA describes the Top Fixed Area */
parameter[0] = 0x00;
parameter[1] = 0x00;
/* VSA describes the height of the Vertical Scrolling Area */
parameter[2] = 0x01;
parameter[3] = 0xF0;
/* BFA describes the Bottom Fixed Area */
parameter[4] = 0x00;
parameter[5] = 0x00;
ST7789H2_WriteReg(ST7789H2_VSCRDEF, parameter, 6);
/* Vertical Scroll Start Address of RAM */
/* GRAM row nbr (320) - Display row nbr (240) = 80 = 0x50 */
parameter[0] = 0x00;
parameter[1] = 0x50;
ST7789H2_WriteReg(ST7789H2_VSCSAD, parameter, 2);
parameter[0] = 0xC0;
}
else
{
parameter[0] = 0x60;
}
ST7789H2_WriteReg(ST7789H2_NORMAL_DISPLAY, parameter, 1);
}
/**
* @brief Enables the Display.
* @param None
* @retval None
*/
void ST7789H2_DisplayOn(void)
{
/* Display ON command */
ST7789H2_WriteReg(ST7789H2_DISPLAY_ON, (uint8_t*)NULL, 0);
/* Sleep Out command */
ST7789H2_WriteReg(ST7789H2_SLEEP_OUT, (uint8_t*)NULL, 0);
}
/**
* @brief Disables the Display.
* @param None
* @retval None
*/
void ST7789H2_DisplayOff(void)
{
uint8_t parameter[1];
parameter[0] = 0xFE;
/* Display OFF command */
ST7789H2_WriteReg(ST7789H2_DISPLAY_OFF, parameter, 1);
/* Sleep In Command */
ST7789H2_WriteReg(ST7789H2_SLEEP_IN, (uint8_t*)NULL, 0);
/* Wait for 10ms */
LCD_IO_Delay(10);
}
/**
* @brief Get the LCD pixel Width.
* @param None
* @retval The Lcd Pixel Width
*/
uint16_t ST7789H2_GetLcdPixelWidth(void)
{
return (uint16_t)ST7789H2_LCD_PIXEL_WIDTH;
}
/**
* @brief Get the LCD pixel Height.
* @param None
* @retval The Lcd Pixel Height
*/
uint16_t ST7789H2_GetLcdPixelHeight(void)
{
return (uint16_t)ST7789H2_LCD_PIXEL_HEIGHT;
}
/**
* @brief Get the st7789h2 ID.
* @param None
* @retval The st7789h2 ID
*/
uint16_t ST7789H2_ReadID(void)
{
LCD_IO_Init();
return ST7789H2_ReadReg(ST7789H2_LCD_ID);
}
/**
* @brief Set Cursor position.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @retval None
*/
void ST7789H2_SetCursor(uint16_t Xpos, uint16_t Ypos)
{
uint8_t parameter[4];
/* CASET: Comumn Addrses Set */
parameter[0] = 0x00;
parameter[1] = 0x00 + Xpos;
parameter[2] = 0x00;
parameter[3] = 0xEF + Xpos;
ST7789H2_WriteReg(ST7789H2_CASET, parameter, 4);
/* RASET: Row Addrses Set */
parameter[0] = 0x00;
parameter[1] = 0x00 + Ypos;
parameter[2] = 0x00;
parameter[3] = 0xEF + Ypos;
ST7789H2_WriteReg(ST7789H2_RASET, parameter, 4);
}
/**
* @brief Write pixel.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @param RGBCode: the RGB pixel color in RGB565 format
* @retval None
*/
void ST7789H2_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t RGBCode)
{
/* Set Cursor */
ST7789H2_SetCursor(Xpos, Ypos);
/* Prepare to write to LCD RAM */
ST7789H2_WriteReg(ST7789H2_WRITE_RAM, (uint8_t*)NULL, 0); /* RAM write data command */
/* Write RAM data */
LCD_IO_WriteData(RGBCode);
}
/**
* @brief Read pixel.
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @retval The RGB pixel color in RGB565 format
*/
uint16_t ST7789H2_ReadPixel(uint16_t Xpos, uint16_t Ypos)
{
ST7789H2_Rgb888 rgb888;
uint8_t r, g, b;
uint16_t rgb565;
/* Set Cursor */
ST7789H2_SetCursor(Xpos, Ypos);
/* Read RGB888 data from LCD RAM */
rgb888 = ST7789H2_ReadPixel_rgb888(Xpos, Ypos);
/* Convert RGB888 to RGB565 */
r = ((rgb888.red & 0xF8) >> 3); /* Extract the red component 5 most significant bits */
g = ((rgb888.green & 0xFC) >> 2); /* Extract the green component 6 most significant bits */
b = ((rgb888.blue & 0xF8) >> 3); /* Extract the blue component 5 most significant bits */
rgb565 = ((uint16_t)(r) << 11) + ((uint16_t)(g) << 5) + ((uint16_t)(b) << 0);
return (rgb565);
}
/**
* @brief Writes to the selected LCD register.
* @param Command: command value (or register address as named in st7789h2 doc).
* @param Parameters: pointer on parameters value (if command uses one or several parameters).
* @param NbParameters: number of command parameters (0 if no parameter)
* @retval None
*/
void ST7789H2_WriteReg(uint8_t Command, uint8_t *Parameters, uint8_t NbParameters)
{
uint8_t i;
/* Send command */
LCD_IO_WriteReg(Command);
/* Send command's parameters if any */
for (i=0; i<NbParameters; i++)
{
LCD_IO_WriteData(Parameters[i]);
}
/**
* @brief Reads the selected LCD Register.
* @param Command: command value (or register address as named in st7789h2 doc).
* @retval Register Value.
*/
uint8_t ST7789H2_ReadReg(uint8_t Command)
{
/* Send command */
LCD_IO_WriteReg(Command);
/* Read dummy data */
LCD_IO_ReadData();
/* Read register value */
return (LCD_IO_ReadData());
}
/**
* @brief Sets a display window
* @param Xpos: specifies the X bottom left position.
* @param Ypos: specifies the Y bottom left position.
* @param Height: display window height.
* @param Width: display window width.
* @retval None
*/
void ST7789H2_SetDisplayWindow(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
{
if (Xpos < ST7789H2_LCD_PIXEL_WIDTH)
{
WindowsXstart = Xpos;
}
else
{
WindowsXstart = 0;
}
if (Ypos < ST7789H2_LCD_PIXEL_HEIGHT)
{
WindowsYstart = Ypos;
}
else
{
WindowsYstart = 0;
}
if (Width + Xpos <= ST7789H2_LCD_PIXEL_WIDTH)
{
WindowsXend = Width + Xpos - 1;
}
else
{
WindowsXend = ST7789H2_LCD_PIXEL_WIDTH - 1;
}
if (Height + Ypos <= ST7789H2_LCD_PIXEL_HEIGHT)
{
WindowsYend = Height + Ypos - 1;
}
else
{
WindowsYend = ST7789H2_LCD_PIXEL_HEIGHT-1;
}
}
/**
* @brief Draw vertical line.
* @param RGBCode: Specifies the RGB color in RGB565 format
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @param Length: specifies the Line length.
* @retval None
*/
void ST7789H2_DrawHLine(uint16_t RGBCode, uint16_t Xpos, uint16_t Ypos, uint16_t Length)
{
uint16_t counter;
/* Set Cursor */
ST7789H2_SetCursor(Xpos, Ypos);
/* Prepare to write to LCD RAM */
ST7789H2_WriteReg(ST7789H2_WRITE_RAM, (uint8_t*)NULL, 0); /* RAM write data command */
/* Sent a complete line */
for(counter = 0; counter < Length; counter++)
{
LCD_IO_WriteData(RGBCode);
}
}
/**
* @brief Draw vertical line.
* @param RGBCode: Specifies the RGB color
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @param Length: specifies the Line length.
* @retval None
*/
void ST7789H2_DrawVLine(uint16_t RGBCode, uint16_t Xpos, uint16_t Ypos, uint16_t Length)
{
uint16_t counter;
/* Set Cursor */
ST7789H2_SetCursor(Xpos, Ypos);
/* Prepare to write to LCD RAM */
ST7789H2_WriteReg(ST7789H2_WRITE_RAM, (uint8_t*)NULL, 0); /* RAM write data command */
/* Fill a complete vertical line */
for(counter = 0; counter < Length; counter++)
{
ST7789H2_WritePixel(Xpos, Ypos + counter, RGBCode);
}
}
/**
* @brief Displays a bitmap picture.
* @param BmpAddress: Bmp picture address.
* @param Xpos: Bmp X position in the LCD
* @param Ypos: Bmp Y position in the LCD
* @retval None
*/
void ST7789H2_DrawBitmap(uint16_t Xpos, uint16_t Ypos, uint8_t *pbmp)
{
uint32_t index = 0, size = 0;
uint32_t posY;
uint32_t nb_line = 0;
uint16_t Xsize = WindowsXend - WindowsXstart + 1;
uint16_t Ysize = WindowsYend - WindowsYstart + 1;
/* Read bitmap size */
size = *(volatile uint16_t *) (pbmp + 2);
size |= (*(volatile uint16_t *) (pbmp + 4)) << 16;
/* Get bitmap data address offset */
index = *(volatile uint16_t *) (pbmp + 10);
index |= (*(volatile uint16_t *) (pbmp + 12)) << 16;
size = (size - index)/2;
pbmp += index;
for (posY = (Ypos + Ysize); posY > Ypos; posY--) /* In BMP files the line order is inverted */
{
/* Set Cursor */
ST7789H2_SetCursor(Xpos, posY - 1);
/* Draw one line of the picture */
ST7789H2_DrawRGBHLine(Xpos, posY - 1, Xsize, (pbmp + (nb_line * Xsize * 2)));
nb_line++;
}
}
/**
* @brief Displays picture.
* @param pdata: picture address.
* @param Xpos: Image X position in the LCD
* @param Ypos: Image Y position in the LCD
* @param Xsize: Image X size in the LCD
* @param Ysize: Image Y size in the LCD
* @retval None
*/
void ST7789H2_DrawRGBImage(uint16_t Xpos, uint16_t Ypos, uint16_t Xsize, uint16_t Ysize, uint8_t *pdata)
{
uint32_t posY;
uint32_t nb_line = 0;
for (posY = Ypos; posY < (Ypos + Ysize); posY ++)
{
/* Set Cursor */
ST7789H2_SetCursor(Xpos, posY);
/* Draw one line of the picture */
ST7789H2_DrawRGBHLine(Xpos, posY, Xsize, (pdata + (nb_line * Xsize * 2)));
nb_line++;
}
}
/******************************************************************************
Static Functions
*******************************************************************************/
/**
* @brief Read pixel from LCD RAM in RGB888 format
* @param Xpos: specifies the X position.
* @param Ypos: specifies the Y position.
* @retval Each RGB pixel color components in a structure
*/
static ST7789H2_Rgb888 ST7789H2_ReadPixel_rgb888(uint16_t Xpos, uint16_t Ypos)
{
ST7789H2_Rgb888 rgb888;
uint16_t rgb888_part1, rgb888_part2;
/* In LCD RAM, pixels are 24 bits packed and read with 16 bits access
* Here is the pixels components arrangement in memory :
* bits: 15 14 13 12 11 10 09 08 | 07 06 05 04 03 02 01 00
* address 0 : red pixel 0 X X | green pixel 0 X X
* address 1 : blue pixel 0 X X | red pixel 1 X X
* address 2 : green pixel 1 X X | blue pixel 1 X X
*/
/* Set Cursor */
ST7789H2_SetCursor(Xpos, Ypos);
/* Prepare to read LCD RAM */
ST7789H2_WriteReg(ST7789H2_READ_RAM, (uint8_t*)NULL, 0); /* RAM read data command */
/* Dummy read */
LCD_IO_ReadData();
/* Read first part of the RGB888 data */
rgb888_part1 = LCD_IO_ReadData();
/* Read first part of the RGB888 data */
rgb888_part2 = LCD_IO_ReadData();
/* red component */
rgb888.red = (rgb888_part1 & 0xFC00) >> 8;
/* green component */
rgb888.green = (rgb888_part1 & 0x00FC) >> 0;
/* blue component */
rgb888.blue = (rgb888_part2 & 0xFC00) >> 8;
return rgb888;
}
/**
* @brief Displays a single picture line.
* @param pdata: picture address.
* @param Xpos: Image X position in the LCD
* @param Ypos: Image Y position in the LCD
* @param Xsize: Image X size in the LCD
* @retval None
*/
static void ST7789H2_DrawRGBHLine(uint16_t Xpos, uint16_t Ypos, uint16_t Xsize, uint8_t *pdata)
{
uint32_t i = 0;
uint32_t posX;
uint16_t *rgb565 = (uint16_t*)pdata;
/* Prepare to write to LCD RAM */
ST7789H2_WriteReg(ST7789H2_WRITE_RAM, (uint8_t*)NULL, 0); /* RAM write data command */
for (posX = Xpos; posX < (Xsize + Xpos); posX++)
{
if ((posX >= WindowsXstart) && (Ypos >= WindowsYstart) && /* Check we are in the defined window */
(posX <= WindowsXend) && (Ypos <= WindowsYend))
{
if (posX != (Xsize + Xpos)) /* When writing last pixel when size is odd, the third part is not written */
{
LCD_IO_WriteData(rgb565[i]);
}
i++;
}
}
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
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