Diff: Components/st7735/st7735.c

Revision:

0:ad9dfc0179dc

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Components/st7735/st7735.c	Mon Nov 02 19:38:36 2015 +0000
@@ -0,0 +1,472 @@
+/**
+  ******************************************************************************
+  * @file    st7735.c
+  * @author  MCD Application Team
+  * @version V1.1.1
+  * @date    24-November-2014
+  * @brief   This file includes the driver for ST7735 LCD mounted on the Adafruit
+  *          1.8" TFT LCD shield (reference ID 802).
+  ******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT(c) 2014 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 "st7735.h"
+
+/** @addtogroup BSP
+  * @{
+  */ 
+
+/** @addtogroup Components
+  * @{
+  */ 
+
+/** @addtogroup ST7735
+  * @brief      This file provides a set of functions needed to drive the
+  *             ST7735 LCD.
+  * @{
+  */
+
+/** @defgroup ST7735_Private_TypesDefinitions
+  * @{
+  */ 
+
+/**
+  * @}
+  */ 
+
+/** @defgroup ST7735_Private_Defines
+  * @{
+  */
+
+/**
+  * @}
+  */ 
+
+/** @defgroup ST7735_Private_Macros
+  * @{
+  */
+
+/**
+  * @}
+  */  
+
+/** @defgroup ST7735_Private_Variables
+  * @{
+  */ 
+
+
+LCD_DrvTypeDef   st7735_drv = 
+{
+  st7735_Init,
+  0,
+  st7735_DisplayOn,
+  st7735_DisplayOff,
+  st7735_SetCursor,
+  st7735_WritePixel,
+  0,
+  st7735_SetDisplayWindow,
+  st7735_DrawHLine,
+  st7735_DrawVLine,
+  st7735_GetLcdPixelWidth,
+  st7735_GetLcdPixelHeight,
+  st7735_DrawBitmap,
+};
+
+static uint16_t ArrayRGB[320] = {0};
+
+/**
+* @}
+*/ 
+
+/** @defgroup ST7735_Private_FunctionPrototypes
+  * @{
+  */
+
+/**
+* @}
+*/ 
+
+/** @defgroup ST7735_Private_Functions
+  * @{
+  */
+
+/**
+  * @brief  Initialize the ST7735 LCD Component.
+  * @param  None
+  * @retval None
+  */
+void st7735_Init(void)
+{    
+  uint8_t data = 0;
+  
+  /* Initialize ST7735 low level bus layer -----------------------------------*/
+  LCD_IO_Init();
+  /* Out of sleep mode, 0 args, no delay */
+  st7735_WriteReg(LCD_REG_17, 0x00); 
+  /* Frame rate ctrl - normal mode, 3 args:Rate = fosc/(1x2+40) * (LINE+2C+2D)*/
+  LCD_IO_WriteReg(LCD_REG_177);
+  data = 0x01;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = 0x2C;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = 0x2D;
+  LCD_IO_WriteMultipleData(&data, 1);
+  /* Frame rate control - idle mode, 3 args:Rate = fosc/(1x2+40) * (LINE+2C+2D) */    
+  st7735_WriteReg(LCD_REG_178, 0x01);
+  st7735_WriteReg(LCD_REG_178, 0x2C);
+  st7735_WriteReg(LCD_REG_178, 0x2D);
+  /* Frame rate ctrl - partial mode, 6 args: Dot inversion mode, Line inversion mode */ 
+  st7735_WriteReg(LCD_REG_179, 0x01);
+  st7735_WriteReg(LCD_REG_179, 0x2C);
+  st7735_WriteReg(LCD_REG_179, 0x2D);
+  st7735_WriteReg(LCD_REG_179, 0x01);
+  st7735_WriteReg(LCD_REG_179, 0x2C);
+  st7735_WriteReg(LCD_REG_179, 0x2D);
+  /* Display inversion ctrl, 1 arg, no delay: No inversion */
+  st7735_WriteReg(LCD_REG_180, 0x07);
+  /* Power control, 3 args, no delay: -4.6V , AUTO mode */
+  st7735_WriteReg(LCD_REG_192, 0xA2);
+  st7735_WriteReg(LCD_REG_192, 0x02);
+  st7735_WriteReg(LCD_REG_192, 0x84);
+  /* Power control, 1 arg, no delay: VGH25 = 2.4C VGSEL = -10 VGH = 3 * AVDD */
+  st7735_WriteReg(LCD_REG_193, 0xC5);
+  /* Power control, 2 args, no delay: Opamp current small, Boost frequency */ 
+  st7735_WriteReg(LCD_REG_194, 0x0A);
+  st7735_WriteReg(LCD_REG_194, 0x00);
+  /* Power control, 2 args, no delay: BCLK/2, Opamp current small & Medium low */  
+  st7735_WriteReg(LCD_REG_195, 0x8A);
+  st7735_WriteReg(LCD_REG_195, 0x2A);
+  /* Power control, 2 args, no delay */
+  st7735_WriteReg(LCD_REG_196, 0x8A);
+  st7735_WriteReg(LCD_REG_196, 0xEE);
+  /* Power control, 1 arg, no delay */
+  st7735_WriteReg(LCD_REG_197, 0x0E);
+  /* Don't invert display, no args, no delay */
+  LCD_IO_WriteReg(LCD_REG_32);
+  /* Set color mode, 1 arg, no delay: 16-bit color */
+  st7735_WriteReg(LCD_REG_58, 0x05);
+  /* Column addr set, 4 args, no delay: XSTART = 0, XEND = 127 */
+  LCD_IO_WriteReg(LCD_REG_42);
+  data = 0x00;
+  LCD_IO_WriteMultipleData(&data, 1);
+  LCD_IO_WriteMultipleData(&data, 1);
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = 0x7F;
+  LCD_IO_WriteMultipleData(&data, 1);
+  /* Row addr set, 4 args, no delay: YSTART = 0, YEND = 159 */
+  LCD_IO_WriteReg(LCD_REG_43);
+  data = 0x00;
+  LCD_IO_WriteMultipleData(&data, 1);
+  LCD_IO_WriteMultipleData(&data, 1);
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = 0x9F;
+  LCD_IO_WriteMultipleData(&data, 1);
+  /* Magical unicorn dust, 16 args, no delay */
+  st7735_WriteReg(LCD_REG_224, 0x02); 
+  st7735_WriteReg(LCD_REG_224, 0x1c);  
+  st7735_WriteReg(LCD_REG_224, 0x07); 
+  st7735_WriteReg(LCD_REG_224, 0x12);
+  st7735_WriteReg(LCD_REG_224, 0x37);  
+  st7735_WriteReg(LCD_REG_224, 0x32);  
+  st7735_WriteReg(LCD_REG_224, 0x29);  
+  st7735_WriteReg(LCD_REG_224, 0x2d);
+  st7735_WriteReg(LCD_REG_224, 0x29);  
+  st7735_WriteReg(LCD_REG_224, 0x25);  
+  st7735_WriteReg(LCD_REG_224, 0x2B);  
+  st7735_WriteReg(LCD_REG_224, 0x39);  
+  st7735_WriteReg(LCD_REG_224, 0x00);  
+  st7735_WriteReg(LCD_REG_224, 0x01);  
+  st7735_WriteReg(LCD_REG_224, 0x03);  
+  st7735_WriteReg(LCD_REG_224, 0x10);
+  /* Sparkles and rainbows, 16 args, no delay */
+  st7735_WriteReg(LCD_REG_225, 0x03);
+  st7735_WriteReg(LCD_REG_225, 0x1d);  
+  st7735_WriteReg(LCD_REG_225, 0x07);  
+  st7735_WriteReg(LCD_REG_225, 0x06);
+  st7735_WriteReg(LCD_REG_225, 0x2E);  
+  st7735_WriteReg(LCD_REG_225, 0x2C);  
+  st7735_WriteReg(LCD_REG_225, 0x29);  
+  st7735_WriteReg(LCD_REG_225, 0x2D);
+  st7735_WriteReg(LCD_REG_225, 0x2E);  
+  st7735_WriteReg(LCD_REG_225, 0x2E);  
+  st7735_WriteReg(LCD_REG_225, 0x37);  
+  st7735_WriteReg(LCD_REG_225, 0x3F);  
+  st7735_WriteReg(LCD_REG_225, 0x00);  
+  st7735_WriteReg(LCD_REG_225, 0x00);  
+  st7735_WriteReg(LCD_REG_225, 0x02);  
+  st7735_WriteReg(LCD_REG_225, 0x10);
+  /* Normal display on, no args, no delay */
+  st7735_WriteReg(LCD_REG_19, 0x00);
+  /* Main screen turn on, no delay */
+  st7735_WriteReg(LCD_REG_41, 0x00);
+  /* Memory access control: MY = 1, MX = 1, MV = 0, ML = 0 */
+  st7735_WriteReg(LCD_REG_54, 0xC0);
+}
+
+/**
+  * @brief  Enables the Display.
+  * @param  None
+  * @retval None
+  */
+void st7735_DisplayOn(void)
+{
+  uint8_t data = 0;
+  LCD_IO_WriteReg(LCD_REG_19);
+  LCD_Delay(10);
+  LCD_IO_WriteReg(LCD_REG_41);
+  LCD_Delay(10);
+  LCD_IO_WriteReg(LCD_REG_54);
+  data = 0xC0;
+  LCD_IO_WriteMultipleData(&data, 1);
+}
+
+/**
+  * @brief  Disables the Display.
+  * @param  None
+  * @retval None
+  */
+void st7735_DisplayOff(void)
+{
+  uint8_t data = 0;
+  LCD_IO_WriteReg(LCD_REG_19);
+  LCD_Delay(10);
+  LCD_IO_WriteReg(LCD_REG_40);
+  LCD_Delay(10);
+  LCD_IO_WriteReg(LCD_REG_54);
+  data = 0xC0;
+  LCD_IO_WriteMultipleData(&data, 1);
+}
+
+/**
+  * @brief  Sets Cursor position.
+  * @param  Xpos: specifies the X position.
+  * @param  Ypos: specifies the Y position.
+  * @retval None
+  */
+void st7735_SetCursor(uint16_t Xpos, uint16_t Ypos)
+{
+  uint8_t data = 0;
+  LCD_IO_WriteReg(LCD_REG_42);
+  data = (Xpos) >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Xpos) & 0xFF;
+  LCD_IO_WriteMultipleData(&data, 1);
+  LCD_IO_WriteReg(LCD_REG_43); 
+  data = (Ypos) >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Ypos) & 0xFF;
+  LCD_IO_WriteMultipleData(&data, 1);
+  LCD_IO_WriteReg(LCD_REG_44);
+}
+
+/**
+  * @brief  Writes pixel.   
+  * @param  Xpos: specifies the X position.
+  * @param  Ypos: specifies the Y position.
+  * @param  RGBCode: the RGB pixel color
+  * @retval None
+  */
+void st7735_WritePixel(uint16_t Xpos, uint16_t Ypos, uint16_t RGBCode)
+{
+  uint8_t data = 0;
+  if((Xpos >= ST7735_LCD_PIXEL_WIDTH) || (Ypos >= ST7735_LCD_PIXEL_HEIGHT)) 
+  {
+    return;
+  }
+  
+  /* Set Cursor */
+  st7735_SetCursor(Xpos, Ypos);
+  
+  data = RGBCode >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = RGBCode;
+  LCD_IO_WriteMultipleData(&data, 1);
+}  
+
+
+/**
+  * @brief  Writes to the selected LCD register.
+  * @param  LCDReg: Address of the selected register.
+  * @param  LCDRegValue: value to write to the selected register.
+  * @retval None
+  */
+void st7735_WriteReg(uint8_t LCDReg, uint8_t LCDRegValue)
+{
+  LCD_IO_WriteReg(LCDReg);
+  LCD_IO_WriteMultipleData(&LCDRegValue, 1);
+}
+
+/**
+  * @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 st7735_SetDisplayWindow(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height)
+{
+  uint8_t data = 0;
+  /* Column addr set, 4 args, no delay: XSTART = Xpos, XEND = (Xpos + Width - 1) */
+  LCD_IO_WriteReg(LCD_REG_42);
+  data = (Xpos) >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Xpos) & 0xFF;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Xpos + Width - 1) >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Xpos + Width - 1) & 0xFF;
+  LCD_IO_WriteMultipleData(&data, 1);
+  /* Row addr set, 4 args, no delay: YSTART = Ypos, YEND = (Ypos + Height - 1) */
+  LCD_IO_WriteReg(LCD_REG_43);
+  data = (Ypos) >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Ypos) & 0xFF;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Ypos + Height - 1) >> 8;
+  LCD_IO_WriteMultipleData(&data, 1);
+  data = (Ypos + Height - 1) & 0xFF;
+  LCD_IO_WriteMultipleData(&data, 1);
+}
+
+/**
+  * @brief  Draws horizontal 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 st7735_DrawHLine(uint16_t RGBCode, uint16_t Xpos, uint16_t Ypos, uint16_t Length)
+{
+  uint8_t counter = 0;
+  
+  if(Xpos + Length > ST7735_LCD_PIXEL_WIDTH) return;
+  
+  /* Set Cursor */
+  st7735_SetCursor(Xpos, Ypos);
+  
+  for(counter = 0; counter < Length; counter++)
+  {
+    ArrayRGB[counter] = RGBCode;
+  }
+  LCD_IO_WriteMultipleData((uint8_t*)&ArrayRGB[0], Length * 2);
+}
+
+/**
+  * @brief  Draws 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 st7735_DrawVLine(uint16_t RGBCode, uint16_t Xpos, uint16_t Ypos, uint16_t Length)
+{
+  uint8_t counter = 0;
+  
+  if(Ypos + Length > ST7735_LCD_PIXEL_HEIGHT) return;
+  for(counter = 0; counter < Length; counter++)
+  {
+    st7735_WritePixel(Xpos, Ypos + counter, RGBCode);
+  }   
+}
+
+/**
+  * @brief  Gets the LCD pixel Width.
+  * @param  None
+  * @retval The Lcd Pixel Width
+  */
+uint16_t st7735_GetLcdPixelWidth(void)
+{
+  return ST7735_LCD_PIXEL_WIDTH;
+}
+
+/**
+  * @brief  Gets the LCD pixel Height.
+  * @param  None
+  * @retval The Lcd Pixel Height
+  */
+uint16_t st7735_GetLcdPixelHeight(void)
+{                          
+  return ST7735_LCD_PIXEL_HEIGHT;
+}
+
+/**
+  * @brief  Displays a bitmap picture loaded in the internal Flash.
+  * @param  BmpAddress: Bmp picture address in the internal Flash.
+  * @retval None
+  */
+void st7735_DrawBitmap(uint16_t Xpos, uint16_t Ypos, uint8_t *pbmp)
+{
+  uint32_t index = 0, size = 0;
+  
+  /* 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;
+  
+  /* Set GRAM write direction and BGR = 0 */
+  /* Memory access control: MY = 0, MX = 1, MV = 0, ML = 0 */
+  st7735_WriteReg(LCD_REG_54, 0x40);
+
+  /* Set Cursor */
+  st7735_SetCursor(Xpos, Ypos);  
+ 
+  LCD_IO_WriteMultipleData((uint8_t*)pbmp, size*2);
+ 
+  /* Set GRAM write direction and BGR = 0 */
+  /* Memory access control: MY = 1, MX = 1, MV = 0, ML = 0 */
+  st7735_WriteReg(LCD_REG_54, 0xC0);
+}
+
+/**
+* @}
+*/ 
+
+/**
+* @}
+*/ 
+
+/**
+* @}
+*/ 
+
+/**
+* @}
+*/
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+
+