Senior Design: Sound Monitor
BSP Drivers
Dependencies: CMSIS_STM32L4xx CMSIS_DSP_401 STM32L4xx_HAL_Driver
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>© 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****/
+
+