ST
BSP driver for DISCO_L496AG
Dependents: DISCO_L496AG-LCD-prova_1 DISCO_L496AG-LCD-prova_2 DISCO_L496AG-LCD-demo DISCO_L496AG-SRAM-demo
Diff: Drivers/BSP/Components/st7789h2/st7789h2.c
- Revision:
- 0:d83f1c8ca282
- Child:
- 2:106c7b82e064
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Drivers/BSP/Components/st7789h2/st7789h2.c Mon Mar 26 10:28:18 2018 +0200
@@ -0,0 +1,725 @@
+/**
+ ******************************************************************************
+ * @file st7789h2.c
+ * @author MCD Application Team
+ * @version V1.1.1
+ * @date 29-December-2016
+ * @brief This file includes the LCD driver for st7789h2 LCD.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* 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, 1);
+
+ /*--------------- 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 = 0;
+
+ /* 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 = 0;
+
+ /* 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++;
+ }
+ }
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/