//--------------------------------------------------------- /* (c)2014 Curt Lagerstam - Newhaven Display International, LLC. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. */ //--------------------------------------------------------- /******************************************************************************* * Function Name : TFT_24_7789_Init * Description : Initializes LCD with built-in ST7789S controller. * Input : None * Output : None * Return : None *******************************************************************************/ void TFT_24_7789_Init(void) { int n; GPIO_ResetBits(GPIOC, CS1); GPIO_SetBits(GPIOC, nRD); GPIO_ResetBits(GPIOC, nWR); GPIO_WriteBit(GPIOC, RES, Bit_RESET); TFT_delay(100); GPIO_WriteBit(GPIOC, RES, Bit_SET); TFT_delay(100); TFT_24_7789_Write_Command(0x0011);//exit SLEEP mode TFT_delay(100); TFT_24_7789_Write_Command(0x0036);TFT_24_7789_Write_Data(0x0080);//MADCTL: memory data access control TFT_24_7789_Write_Command(0x003A);TFT_24_7789_Write_Data(0x0066);//COLMOD: Interface Pixel format *** I use 262K-colors in 18bit/pixel format when using 8-bit interface to allow 3-bytes per pixel //TFT_24_7789_Write_Command(0x003A);TFT_24_7789_Write_Data(0x0055);//COLMOD: Interface Pixel format *** I use 65K-colors in 16bit/pixel (5-6-5) format when using 16-bit interface to allow 1-byte per pixel TFT_24_7789_Write_Command(0x00B2);TFT_24_7789_Write_Data(0x000C);TFT_24_7789_Write_Data(0x0C);TFT_24_7789_Write_Data(0x00);TFT_24_7789_Write_Data(0x33);TFT_24_7789_Write_Data(0x33);//PORCTRK: Porch setting TFT_24_7789_Write_Command(0x00B7);TFT_24_7789_Write_Data(0x0035);//GCTRL: Gate Control TFT_24_7789_Write_Command(0x00BB);TFT_24_7789_Write_Data(0x002B);//VCOMS: VCOM setting TFT_24_7789_Write_Command(0x00C0);TFT_24_7789_Write_Data(0x002C);//LCMCTRL: LCM Control TFT_24_7789_Write_Command(0x00C2);TFT_24_7789_Write_Data(0x0001);TFT_24_7789_Write_Data(0xFF);//VDVVRHEN: VDV and VRH Command Enable TFT_24_7789_Write_Command(0x00C3);TFT_24_7789_Write_Data(0x0011);//VRHS: VRH Set TFT_24_7789_Write_Command(0x00C4);TFT_24_7789_Write_Data(0x0020);//VDVS: VDV Set TFT_24_7789_Write_Command(0x00C6);TFT_24_7789_Write_Data(0x000F);//FRCTRL2: Frame Rate control in normal mode TFT_24_7789_Write_Command(0x00D0);TFT_24_7789_Write_Data(0x00A4);TFT_24_7789_Write_Data(0xA1);//PWCTRL1: Power Control 1 TFT_24_7789_Write_Command(0x00E0);TFT_24_7789_Write_Data(0x00D0); TFT_24_7789_Write_Data(0x0000); TFT_24_7789_Write_Data(0x0005); TFT_24_7789_Write_Data(0x000E); TFT_24_7789_Write_Data(0x0015); TFT_24_7789_Write_Data(0x000D); TFT_24_7789_Write_Data(0x0037); TFT_24_7789_Write_Data(0x0043); TFT_24_7789_Write_Data(0x0047); TFT_24_7789_Write_Data(0x0009); TFT_24_7789_Write_Data(0x0015); TFT_24_7789_Write_Data(0x0012); TFT_24_7789_Write_Data(0x0016); TFT_24_7789_Write_Data(0x0019);//PVGAMCTRL: Positive Voltage Gamma control TFT_24_7789_Write_Command(0x00E1);TFT_24_7789_Write_Data(0x00D0); TFT_24_7789_Write_Data(0x0000); TFT_24_7789_Write_Data(0x0005); TFT_24_7789_Write_Data(0x000D); TFT_24_7789_Write_Data(0x000C); TFT_24_7789_Write_Data(0x0006); TFT_24_7789_Write_Data(0x002D); TFT_24_7789_Write_Data(0x0044); TFT_24_7789_Write_Data(0x0040); TFT_24_7789_Write_Data(0x000E); TFT_24_7789_Write_Data(0x001C); TFT_24_7789_Write_Data(0x0018); TFT_24_7789_Write_Data(0x0016); TFT_24_7789_Write_Data(0x0019);//NVGAMCTRL: Negative Voltage Gamma control TFT_24_7789_Write_Command(0x002A);TFT_24_7789_Write_Data(0x0000);TFT_24_7789_Write_Data(0x0000);TFT_24_7789_Write_Data(0x0000);TFT_24_7789_Write_Data(0x00EF);//X address set TFT_24_7789_Write_Command(0x002B);TFT_24_7789_Write_Data(0x0000);TFT_24_7789_Write_Data(0x0000);TFT_24_7789_Write_Data(0x0001);TFT_24_7789_Write_Data(0x003F);//Y address set TFT_delay(10); } /******************************************************************************* * Function Name : TFT_24_7789_Write_Command * Description : writes a 1 byte command to 2.4" TFT. * Input : command = one byte command (register address) * Output : None * Return : None *******************************************************************************/ void TFT_24_7789_Write_Command(unsigned int command) { GPIO_ResetBits(GPIOC, CS1); GPIO_ResetBits(GPIOC, RS); GPIO_SetBits(GPIOC, nRD); GPIO_ResetBits(GPIOC, nWR); GPIO_Write(GPIOB, command);//when using 16-bit interface (DB17:10,DB8:1)//when using 8-bit interface (DB17:10) TFT_delay(10); GPIO_SetBits(GPIOC, nWR); TFT_delay(1); } /******************************************************************************* * Function Name : TFT_24_7789_Write_Data * Description : writes 1 byte of data to 2.4" TFT. * Input : data1 = one byte of display data or command parameter * Output : None * Return : None *******************************************************************************/ void TFT_24_7789_Write_Data(unsigned int data1) { GPIO_Write(GPIOB, data1);//when using 16-bit interface (DB17:10,DB8:1)//when using 8-bit interface (DB17:10) GPIO_SetBits(GPIOC, RS); GPIO_ResetBits(GPIOC, nWR); TFT_delay(1); GPIO_SetBits(GPIOC, nWR); } /******************************************************************************* * Function Name : TFT_24_7789_demo * Description : Loads bmp from SD card and writes to NHD-2.4-240320CF-CTXI#. * Input : None * Output : None * Return : 1-end of function reached *******************************************************************************/ int TFT_24_7789_demo(void) { GPIO_SetBits(GPIOC, IM0); //8-bit mode //GPIO_ResetBits(GPIOC, IM0); //16-bit mode TFT_24_7789_Init(); TFT_24S_Write_Command(0x002C); //Memory write for (n=0;n<3;n++){ memset(RGB16,0x0000,sizeof(RGB16)); for (i=0;i<25600;i++) //for each 24-bit pixel... { f_read(&File1, &blue, 1, &blen); //read the blue 8-bits f_read(&File1, &green, 1, &blen); //read the green 8-bits f_read(&File1, &red, 1, &blen); //read the red 8-bits /* un-comment below for 8-bit interface */ GPIO_SetBits(GPIOC, RS); GPIO_Write(GPIOB, red); GPIO_ResetBits(GPIOC, nWR); GPIO_SetBits(GPIOC, nWR); GPIO_Write(GPIOB, green); GPIO_ResetBits(GPIOC, nWR); GPIO_SetBits(GPIOC, nWR); GPIO_Write(GPIOB, blue); GPIO_ResetBits(GPIOC, nWR); GPIO_SetBits(GPIOC, nWR); /* END of 8-bit interface */ /* un-comment below for 16-bit interface */ // // red=red>>3; //shift down to 5-bits // green=green>>2; //shift down to 6-bits // blue=blue>>3; //shift down to 5-bits // RGB16[i]= (RGB16[i] | red); //put red 5-bits into int // RGB16[i]= (RGB16[i] << 6); //move red bits over, make room for green // RGB16[i]= (RGB16[i] | green); //put green 6-bits into int // RGB16[i]= (RGB16[i] << 5); //move red and green bits over, make room for blue // RGB16[i]= (RGB16[i] | blue); //put blue 5-bits into int // GPIO_Write(GPIOB, RGB16[i]); // GPIO_SetBits(GPIOC, RS); // GPIO_ResetBits(GPIOC, nWR); // GPIO_SetBits(GPIOC, nWR); // /* END of 16-bit interface */ } } TFT_24_7789_Write_Command(0x0029); //display ON return 1; }