/** * @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); }
/** * @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); st7735_WriteReg(LCD_REG_54, 0xC0); }