/******************************************************************************/ /* GLCD_SPI_LPC1700.c: LPC1700 low level Graphic LCD (240x320 pixels) driven */ /* with SPI functions */ /******************************************************************************/ /* This file is part of the uVision/ARM development tools. */ /* Copyright (c) 2005-2011 Keil - An ARM Company. All rights reserved. */ /* This software may only be used under the terms of a valid, current, */ /* end user licence from KEIL for a compatible version of KEIL software */ /* development tools. Nothing else gives you the right to use this software. */ /******************************************************************************/ #include #include "GLCD.h" #include "Font_6x8_h.h" #include "Font_16x24_h.h" /************************** Orientation configuration ************************/ #define LANDSCAPE 1 /* 1 for landscape, 0 for portrait */ #define ROTATE180 0 /* 1 to rotate the screen for 180 deg */ /*********************** Hardware specific configuration **********************/ /* SPI Interface: SPI3 PINS: - CS = P0.6 (GPIO pin) - RS = GND - WR/SCK = P0.7 (SCK1) - RD = GND - SDO = P0.8 (MISO1) - SDI = P0.9 (MOSI1) */ #define PIN_CS (1 << 6) #define PIN_CLK (1 << 7) #define PIN_DAT (1 << 9) #define IN 0x00 #define OUT 0x01 /* SPI_SR - bit definitions */ #define TFE 0x01 #define RNE 0x04 #define BSY 0x10 /*------------------------- Speed dependant settings -------------------------*/ /* If processor works on high frequency delay has to be increased, it can be increased by factor 2^N by this constant */ #define DELAY_2N 18 /*---------------------- Graphic LCD size definitions ------------------------*/ #if (LANDSCAPE == 1) #define WIDTH 320 /* Screen Width (in pixels) */ #define HEIGHT 240 /* Screen Hight (in pixels) */ #else #define WIDTH 240 /* Screen Width (in pixels) */ #define HEIGHT 320 /* Screen Hight (in pixels) */ #endif #define BPP 16 /* Bits per pixel */ #define BYPP ((BPP+7)/8) /* Bytes per pixel */ /*--------------- Graphic LCD interface hardware definitions -----------------*/ /* Pin CS setting to 0 or 1 */ #define LCD_CS(x) ((x) ? (LPC_GPIO0->FIOSET = PIN_CS) : (LPC_GPIO0->FIOCLR = PIN_CS)) #define LCD_CLK(x) ((x) ? (LPC_GPIO0->FIOSET = PIN_CLK) : (LPC_GPIO0->FIOCLR = PIN_CLK)) #define LCD_DAT(x) ((x) ? (LPC_GPIO0->FIOSET = PIN_DAT) : (LPC_GPIO0->FIOCLR = PIN_DAT)) #define DAT_MODE(x) ((x == OUT) ? (LPC_GPIO0->FIODIR |= PIN_DAT) : (LPC_GPIO0->FIODIR &= ~PIN_DAT)) #define BUS_VAL() ((LPC_GPIO0->FIOPIN & PIN_DAT) != 0) #define SPI_START (0x70) /* Start byte for SPI transfer */ #define SPI_RD (0x01) /* WR bit 1 within start */ #define SPI_WR (0x00) /* WR bit 0 within start */ #define SPI_DATA (0x02) /* RS bit 1 within start byte */ #define SPI_INDEX (0x00) /* RS bit 0 within start byte */ #define BG_COLOR 0 /* Background color */ #define TXT_COLOR 1 /* Text color */ /*---------------------------- Global variables ------------------------------*/ /******************************************************************************/ static volatile unsigned short Color[2] = {White, Black}; static unsigned char Himax; /************************ Local auxiliary functions ***************************/ /******************************************************************************* * Delay in while loop cycles * * Parameter: cnt: number of while cycles to delay * * Return: * *******************************************************************************/ static void delay (int cnt) { cnt <<= DELAY_2N; while (cnt--); } /******************************************************************************* * Transfer 1 byte over the serial communication * * Parameter: byte: byte to be sent * * mode: OUT = transmit byte, IN = receive byte * * Return: byte read while sending * *******************************************************************************/ static unsigned char spi_tran_man (unsigned char byte, unsigned int mode) { unsigned char val = 0; int i; if (mode == OUT) { DAT_MODE (OUT); } else { DAT_MODE (IN); } for (i = 7; i >= 0; i--) { LCD_CLK(0); delay(1); if (mode == OUT) { LCD_DAT((byte & (1 << i)) != 0); } else { val |= (BUS_VAL() << i); } LCD_CLK(1); delay(1); } return (val); } /******************************************************************************* * Transfer 1 byte over the serial communication * * Parameter: byte: byte to be sent * * Return: byte read while sending * *******************************************************************************/ static __inline unsigned char spi_tran (unsigned char byte) { LPC_SSP1->DR = byte; while (!(LPC_SSP1->SR & RNE)); /* Wait for send to finish */ return (LPC_SSP1->DR); } /******************************************************************************* * Write a command the LCD controller * * Parameter: cmd: command to be written * * Return: * *******************************************************************************/ static __inline void wr_cmd (unsigned char cmd) { LCD_CS(0); spi_tran(SPI_START | SPI_WR | SPI_INDEX); /* Write : RS = 0, RW = 0 */ spi_tran(0); spi_tran(cmd); LCD_CS(1); } /******************************************************************************* * Write data to the LCD controller * * Parameter: dat: data to be written * * Return: * *******************************************************************************/ static __inline void wr_dat (unsigned short dat) { LCD_CS(0); spi_tran(SPI_START | SPI_WR | SPI_DATA); /* Write : RS = 1, RW = 0 */ spi_tran((dat >> 8)); /* Write D8..D15 */ spi_tran((dat & 0xFF)); /* Write D0..D7 */ LCD_CS(1); } /******************************************************************************* * Start of data writing to the LCD controller * * Parameter: * * Return: * *******************************************************************************/ static __inline void wr_dat_start (void) { LCD_CS(0); spi_tran(SPI_START | SPI_WR | SPI_DATA); /* Write : RS = 1, RW = 0 */ } /******************************************************************************* * Stop of data writing to the LCD controller * * Parameter: * * Return: * *******************************************************************************/ static __inline void wr_dat_stop (void) { LCD_CS(1); } /******************************************************************************* * Data writing to the LCD controller * * Parameter: dat: data to be written * * Return: * *******************************************************************************/ static __inline void wr_dat_only (unsigned short dat) { spi_tran((dat >> 8)); /* Write D8..D15 */ spi_tran((dat & 0xFF)); /* Write D0..D7 */ } /******************************************************************************* * Read data from the LCD controller * * Parameter: * * Return: read data * *******************************************************************************/ static __inline unsigned short rd_dat (void) { unsigned short val = 0; LCD_CS(0); spi_tran(SPI_START | SPI_RD | SPI_DATA); /* Read: RS = 1, RW = 1 */ spi_tran(0); /* Dummy read 1 */ val = spi_tran(0); /* Read D8..D15 */ val <<= 8; val |= spi_tran(0); /* Read D0..D7 */ LCD_CS(1); return (val); } /******************************************************************************* * Write a value to the to LCD register * * Parameter: reg: register to be written * * val: value to write to the register * *******************************************************************************/ static __inline void wr_reg (unsigned char reg, unsigned short val) { wr_cmd(reg); wr_dat(val); } /******************************************************************************* * Read from the LCD register * * Parameter: reg: register to be read * * Return: value read from the register * *******************************************************************************/ static unsigned short rd_reg (unsigned char reg) { wr_cmd(reg); return(rd_dat()); } /******************************************************************************* * Read LCD controller ID (Himax GLCD) * * Parameter: (none) * * Return: controller ID * *******************************************************************************/ static unsigned short rd_id_man (void) { unsigned short val; /* Set MOSI, MISO and SCK as GPIO pins, with pull-down/pull-up disabled */ LPC_PINCON->PINSEL0 &= ~((3 << 18) | (3 << 16) | (3 << 14)); LPC_PINCON->PINMODE0 |= 0x000AA000; LPC_GPIO0->FIODIR |= PIN_CLK; /* SCK pin is GPIO output */ LCD_CS (1); /* Set chip select high */ LCD_CLK(1); /* Set clock high */ LCD_CS(0); spi_tran_man (SPI_START | SPI_WR | SPI_INDEX, OUT); spi_tran_man (0x00, OUT); LCD_CS(1); LCD_CS(0); spi_tran_man (SPI_START | SPI_RD | SPI_DATA, OUT); val = spi_tran_man(0, IN); LCD_CS(1); /* Connect MOSI, MISO, and SCK to SSP peripheral */ LPC_GPIO0->FIODIR &= ~PIN_CLK; LPC_PINCON->PINSEL0 |= (2 << 18) | (2 << 16) | (2 << 14); LPC_PINCON->PINMODE0 &= ~0x000FF000; return (val); } /************************ Exported functions **********************************/ /******************************************************************************* * Initialize the Graphic LCD controller * * Parameter: * * Return: * *******************************************************************************/ void GLCD_Init (void) { unsigned short driverCode; /* Enable clock for SSP1, clock = CCLK / 2 */ LPC_SC->PCONP |= 0x00000400; LPC_SC->PCLKSEL0 |= 0x00200000; /* Configure the LCD Control pins */ LPC_PINCON->PINSEL9 &= 0xF0FFFFFF; LPC_GPIO4->FIODIR |= 0x30000000; LPC_GPIO4->FIOSET = 0x20000000; /* SSEL1 is GPIO output set to high */ LPC_GPIO0->FIODIR |= 0x00000040; LPC_GPIO0->FIOSET = 0x00000040; LPC_PINCON->PINSEL0 &= 0xFFF03FFF; LPC_PINCON->PINSEL0 |= 0x000A8000; /* Enable SPI in Master Mode, CPOL=1, CPHA=1 */ /* Max. 12.5 MBit used for Data Transfer @ 100MHz */ LPC_SSP1->CR0 = 0x01C7; LPC_SSP1->CPSR = 0x02; LPC_SSP1->CR1 = 0x02; driverCode = rd_id_man (); if (driverCode == 0) { driverCode = rd_reg(0x00); } if (driverCode == 0x47) { /* LCD with HX8347-D LCD Controller */ Himax = 1; /* Set Himax LCD controller flag */ /* Driving ability settings ----------------------------------------------*/ wr_reg(0xEA, 0x00); /* Power control internal used (1) */ wr_reg(0xEB, 0x20); /* Power control internal used (2) */ wr_reg(0xEC, 0x0C); /* Source control internal used (1) */ wr_reg(0xED, 0xC7); /* Source control internal used (2) */ wr_reg(0xE8, 0x38); /* Source output period Normal mode */ wr_reg(0xE9, 0x10); /* Source output period Idle mode */ wr_reg(0xF1, 0x01); /* RGB 18-bit interface ;0x0110 */ wr_reg(0xF2, 0x10); /* Adjust the Gamma Curve ------------------------------------------------*/ wr_reg(0x40, 0x01); wr_reg(0x41, 0x00); wr_reg(0x42, 0x00); wr_reg(0x43, 0x10); wr_reg(0x44, 0x0E); wr_reg(0x45, 0x24); wr_reg(0x46, 0x04); wr_reg(0x47, 0x50); wr_reg(0x48, 0x02); wr_reg(0x49, 0x13); wr_reg(0x4A, 0x19); wr_reg(0x4B, 0x19); wr_reg(0x4C, 0x16); wr_reg(0x50, 0x1B); wr_reg(0x51, 0x31); wr_reg(0x52, 0x2F); wr_reg(0x53, 0x3F); wr_reg(0x54, 0x3F); wr_reg(0x55, 0x3E); wr_reg(0x56, 0x2F); wr_reg(0x57, 0x7B); wr_reg(0x58, 0x09); wr_reg(0x59, 0x06); wr_reg(0x5A, 0x06); wr_reg(0x5B, 0x0C); wr_reg(0x5C, 0x1D); wr_reg(0x5D, 0xCC); /* Power voltage setting -------------------------------------------------*/ wr_reg(0x1B, 0x1B); wr_reg(0x1A, 0x01); wr_reg(0x24, 0x2F); wr_reg(0x25, 0x57); wr_reg(0x23, 0x88); /* Power on setting ------------------------------------------------------*/ wr_reg(0x18, 0x36); /* Internal oscillator frequency adj */ wr_reg(0x19, 0x01); /* Enable internal oscillator */ wr_reg(0x01, 0x00); /* Normal mode, no scrool */ wr_reg(0x1F, 0x88); /* Power control 6 - DDVDH Off */ delay(20); wr_reg(0x1F, 0x82); /* Power control 6 - Step-up: 3 x VCI */ delay(5); wr_reg(0x1F, 0x92); /* Power control 6 - Step-up: On */ delay(5); wr_reg(0x1F, 0xD2); /* Power control 6 - VCOML active */ delay(5); /* Color selection -------------------------------------------------------*/ wr_reg(0x17, 0x55); /* RGB, System interface: 16 Bit/Pixel*/ wr_reg(0x00, 0x00); /* Scrolling off, no standby */ /* Interface config ------------------------------------------------------*/ wr_reg(0x2F, 0x11); /* LCD Drive: 1-line inversion */ wr_reg(0x31, 0x00); wr_reg(0x32, 0x00); /* DPL=0, HSPL=0, VSPL=0, EPL=0 */ /* Display on setting ----------------------------------------------------*/ wr_reg(0x28, 0x38); /* PT(0,0) active, VGL/VGL */ delay(20); wr_reg(0x28, 0x3C); /* Display active, VGL/VGL */ #if (LANDSCAPE == 1) #if (ROTATE180 == 0) wr_reg (0x16, 0xA8); #else wr_reg (0x16, 0x68); #endif #else #if (ROTATE180 == 0) wr_reg (0x16, 0x08); #else wr_reg (0x16, 0xC8); #endif #endif /* Display scrolling settings --------------------------------------------*/ wr_reg(0x0E, 0x00); /* TFA MSB */ wr_reg(0x0F, 0x00); /* TFA LSB */ wr_reg(0x10, 320 >> 8); /* VSA MSB */ wr_reg(0x11, 320 & 0xFF); /* VSA LSB */ wr_reg(0x12, 0x00); /* BFA MSB */ wr_reg(0x13, 0x00); /* BFA LSB */ } else { Himax = 0; /* This is not Himax LCD controller */ /* Start Initial Sequence ------------------------------------------------*/ #if (ROTATE180 == 1) wr_reg(0x01, 0x0000); /* Clear SS bit */ #else wr_reg(0x01, 0x0100); /* Set SS bit */ #endif wr_reg(0x02, 0x0700); /* Set 1 line inversion */ wr_reg(0x04, 0x0000); /* Resize register */ wr_reg(0x08, 0x0207); /* 2 lines front, 7 back porch */ wr_reg(0x09, 0x0000); /* Set non-disp area refresh cyc ISC */ wr_reg(0x0A, 0x0000); /* FMARK function */ wr_reg(0x0C, 0x0000); /* RGB interface setting */ wr_reg(0x0D, 0x0000); /* Frame marker Position */ wr_reg(0x0F, 0x0000); /* RGB interface polarity */ /* Power On sequence -----------------------------------------------------*/ wr_reg(0x10, 0x0000); /* Reset Power Control 1 */ wr_reg(0x11, 0x0000); /* Reset Power Control 2 */ wr_reg(0x12, 0x0000); /* Reset Power Control 3 */ wr_reg(0x13, 0x0000); /* Reset Power Control 4 */ delay(20); /* Discharge cap power voltage (200ms)*/ wr_reg(0x10, 0x12B0); /* SAP, BT[3:0], AP, DSTB, SLP, STB */ wr_reg(0x11, 0x0007); /* DC1[2:0], DC0[2:0], VC[2:0] */ delay(5); /* Delay 50 ms */ wr_reg(0x12, 0x01BD); /* VREG1OUT voltage */ delay(5); /* Delay 50 ms */ wr_reg(0x13, 0x1400); /* VDV[4:0] for VCOM amplitude */ wr_reg(0x29, 0x000E); /* VCM[4:0] for VCOMH */ delay(5); /* Delay 50 ms */ wr_reg(0x20, 0x0000); /* GRAM horizontal Address */ wr_reg(0x21, 0x0000); /* GRAM Vertical Address */ /* Adjust the Gamma Curve ------------------------------------------------*/ switch (driverCode) { case 0x5408: /* LCD with SPFD5408 LCD Controller */ wr_reg(0x30, 0x0B0D); wr_reg(0x31, 0x1923); wr_reg(0x32, 0x1C26); wr_reg(0x33, 0x261C); wr_reg(0x34, 0x2419); wr_reg(0x35, 0x0D0B); wr_reg(0x36, 0x1006); wr_reg(0x37, 0x0610); wr_reg(0x38, 0x0706); wr_reg(0x39, 0x0304); wr_reg(0x3A, 0x0E05); wr_reg(0x3B, 0x0E01); wr_reg(0x3C, 0x010E); wr_reg(0x3D, 0x050E); wr_reg(0x3E, 0x0403); wr_reg(0x3F, 0x0607); break; case 0x9325: /* LCD with RM68050 LCD Controller */ wr_reg(0x0030,0x0000); wr_reg(0x0031,0x0607); wr_reg(0x0032,0x0305); wr_reg(0x0035,0x0000); wr_reg(0x0036,0x1604); wr_reg(0x0037,0x0204); wr_reg(0x0038,0x0001); wr_reg(0x0039,0x0707); wr_reg(0x003C,0x0000); wr_reg(0x003D,0x000F); break; case 0x9320: /* LCD with ILI9320 LCD Controller */ default: /* LCD with other LCD Controller */ wr_reg(0x30, 0x0006); wr_reg(0x31, 0x0101); wr_reg(0x32, 0x0003); wr_reg(0x35, 0x0106); wr_reg(0x36, 0x0B02); wr_reg(0x37, 0x0302); wr_reg(0x38, 0x0707); wr_reg(0x39, 0x0007); wr_reg(0x3C, 0x0600); wr_reg(0x3D, 0x020B); break; } /* Set GRAM area ---------------------------------------------------------*/ wr_reg(0x50, 0x0000); /* Horizontal GRAM Start Address */ wr_reg(0x51, (HEIGHT-1)); /* Horizontal GRAM End Address */ wr_reg(0x52, 0x0000); /* Vertical GRAM Start Address */ wr_reg(0x53, (WIDTH-1)); /* Vertical GRAM End Address */ /* Set Gate Scan Line ----------------------------------------------------*/ switch (driverCode) { case 0x5408: /* LCD with SPFD5408 LCD Controller */ case 0x9325: /* LCD with RM68050 LCD Controller */ #if (LANDSCAPE ^ ROTATE180) wr_reg(0x60, 0x2700); #else wr_reg(0x60, 0xA700); #endif break; case 0x9320: /* LCD with ILI9320 LCD Controller */ default: /* LCD with other LCD Controller */ #if (LANDSCAPE ^ ROTATE180) wr_reg(0x60, 0xA700); #else wr_reg(0x60, 0x2700); #endif break; } wr_reg(0x61, 0x0001); /* NDL,VLE, REV */ wr_reg(0x6A, 0x0000); /* Set scrolling line */ /* Partial Display Control -----------------------------------------------*/ wr_reg(0x80, 0x0000); wr_reg(0x81, 0x0000); wr_reg(0x82, 0x0000); wr_reg(0x83, 0x0000); wr_reg(0x84, 0x0000); wr_reg(0x85, 0x0000); /* Panel Control ---------------------------------------------------------*/ wr_reg(0x90, 0x0010); wr_reg(0x92, 0x0000); wr_reg(0x93, 0x0003); wr_reg(0x95, 0x0110); wr_reg(0x97, 0x0000); wr_reg(0x98, 0x0000); /* Set GRAM write direction I/D=11 (Horizontal : increment, Vertical : increment) */ #if (LANDSCAPE == 1) /* AM=1 (address is updated in vertical writing direction) */ wr_reg(0x03, 0x1038); #else /* AM=0 (address is updated in horizontal writing direction) */ wr_reg(0x03, 0x1030); #endif wr_reg(0x07, 0x0137); /* 262K color and display ON */ } LPC_GPIO4->FIOSET = 0x10000000; } /******************************************************************************* * Set draw window region * * Parameter: x: horizontal position * * y: vertical position * * w: window width in pixel * * h: window height in pixels * * Return: * *******************************************************************************/ void GLCD_SetWindow (unsigned int x, unsigned int y, unsigned int w, unsigned int h) { unsigned int xe, ye; if (Himax) { xe = x+w-1; ye = y+h-1; wr_reg(0x02, x >> 8); /* Column address start MSB */ wr_reg(0x03, x & 0xFF); /* Column address start LSB */ wr_reg(0x04, xe >> 8); /* Column address end MSB */ wr_reg(0x05, xe & 0xFF); /* Column address end LSB */ wr_reg(0x06, y >> 8); /* Row address start MSB */ wr_reg(0x07, y & 0xFF); /* Row address start LSB */ wr_reg(0x08, ye >> 8); /* Row address end MSB */ wr_reg(0x09, ye & 0xFF); /* Row address end LSB */ } else { #if (LANDSCAPE == 1) wr_reg(0x50, y); /* Vertical GRAM Start Address */ wr_reg(0x51, y+h-1); /* Vertical GRAM End Address (-1) */ wr_reg(0x52, x); /* Horizontal GRAM Start Address */ wr_reg(0x53, x+w-1); /* Horizontal GRAM End Address (-1) */ wr_reg(0x20, y); wr_reg(0x21, x); #else wr_reg(0x50, x); /* Horizontal GRAM Start Address */ wr_reg(0x51, x+w-1); /* Horizontal GRAM End Address (-1) */ wr_reg(0x52, y); /* Vertical GRAM Start Address */ wr_reg(0x53, y+h-1); /* Vertical GRAM End Address (-1) */ wr_reg(0x20, x); wr_reg(0x21, y); #endif } } /******************************************************************************* * Set draw window region to whole screen * * Parameter: * * Return: * *******************************************************************************/ void GLCD_WindowMax (void) { GLCD_SetWindow (0, 0, WIDTH, HEIGHT); } /******************************************************************************* * Draw a pixel in foreground color * * Parameter: x: horizontal position * * y: vertical position * * Return: * *******************************************************************************/ void GLCD_PutPixel (unsigned int x, unsigned int y) { if (Himax) { wr_reg(0x02, x >> 8); /* Column address start MSB */ wr_reg(0x03, x & 0xFF); /* Column address start LSB */ wr_reg(0x04, x >> 8); /* Column address end MSB */ wr_reg(0x05, x & 0xFF); /* Column address end LSB */ wr_reg(0x06, y >> 8); /* Row address start MSB */ wr_reg(0x07, y & 0xFF); /* Row address start LSB */ wr_reg(0x08, y >> 8); /* Row address end MSB */ wr_reg(0x09, y & 0xFF); /* Row address end LSB */ } else { #if (LANDSCAPE == 1) wr_reg(0x20, y); wr_reg(0x21, x); #else wr_reg(0x20, x); wr_reg(0x21, y); #endif } wr_cmd(0x22); wr_dat(Color[TXT_COLOR]); } /******************************************************************************* * Set foreground color * * Parameter: color: foreground color * * Return: * *******************************************************************************/ void GLCD_SetTextColor (unsigned short color) { Color[TXT_COLOR] = color; } /******************************************************************************* * Set background color * * Parameter: color: background color * * Return: * *******************************************************************************/ void GLCD_SetBackColor (unsigned short color) { Color[BG_COLOR] = color; } /******************************************************************************* * Clear display * * Parameter: color: display clearing color * * Return: * *******************************************************************************/ void GLCD_Clear (unsigned short color) { unsigned int i; GLCD_WindowMax(); wr_cmd(0x22); wr_dat_start(); for(i = 0; i < (WIDTH*HEIGHT); i++) wr_dat_only(color); wr_dat_stop(); } /******************************************************************************* * Draw character on given position * * Parameter: x: horizontal position * * y: vertical position * * cw: character width in pixel * * ch: character height in pixels * * c: pointer to character bitmap * * Return: * *******************************************************************************/ void GLCD_DrawChar (unsigned int x, unsigned int y, unsigned int cw, unsigned int ch, unsigned char *c) { unsigned int i, j, k, pixs; GLCD_SetWindow(x, y, cw, ch); wr_cmd(0x22); wr_dat_start(); k = (cw + 7)/8; if (k == 1) { for (j = 0; j < ch; j++) { pixs = *(unsigned char *)c; c += 1; for (i = 0; i < cw; i++) { wr_dat_only (Color[(pixs >> i) & 1]); } } } else if (k == 2) { for (j = 0; j < ch; j++) { pixs = *(unsigned short *)c; c += 2; for (i = 0; i < cw; i++) { wr_dat_only (Color[(pixs >> i) & 1]); } } } wr_dat_stop(); } /******************************************************************************* * Disply character on given line * * Parameter: ln: line number * * col: column number * * fi: font index (0 = 6x8, 1 = 16x24) * * c: ascii character * * Return: * *******************************************************************************/ void GLCD_DisplayChar (unsigned int ln, unsigned int col, unsigned char fi, unsigned char c) { c -= 32; switch (fi) { case 0: /* Font 6 x 8 */ GLCD_DrawChar(col * 6, ln * 8, 6, 8, (unsigned char *)&Font_6x8_h [c * 8]); break; case 1: /* Font 16 x 24 */ GLCD_DrawChar(col * 16, ln * 24, 16, 24, (unsigned char *)&Font_16x24_h[c * 24]); break; } } /******************************************************************************* * Disply string on given line * * Parameter: ln: line number * * col: column number * * fi: font index (0 = 6x8, 1 = 16x24) * * s: pointer to string * * Return: * *******************************************************************************/ void GLCD_DisplayString (unsigned int ln, unsigned int col, unsigned char fi, unsigned char *s) { while (*s) { GLCD_DisplayChar(ln, col++, fi, *s++); } } /******************************************************************************* * Clear given line * * Parameter: ln: line number * * fi: font index (0 = 6x8, 1 = 16x24) * * Return: * *******************************************************************************/ void GLCD_ClearLn (unsigned int ln, unsigned char fi) { unsigned char i; unsigned char buf[60]; GLCD_WindowMax(); switch (fi) { case 0: /* Font 6 x 8 */ for (i = 0; i < (WIDTH+5)/6; i++) buf[i] = ' '; buf[i+1] = 0; break; case 1: /* Font 16 x 24 */ for (i = 0; i < (WIDTH+15)/16; i++) buf[i] = ' '; buf[i+1] = 0; break; } GLCD_DisplayString (ln, 0, fi, buf); } /******************************************************************************* * Draw bargraph * * Parameter: x: horizontal position * * y: vertical position * * w: maximum width of bargraph (in pixels) * * h: bargraph height * * val: value of active bargraph (in 1/1024) * * Return: * *******************************************************************************/ void GLCD_Bargraph (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned int val) { int i,j; val = (val * w) >> 10; /* Scale value */ GLCD_SetWindow(x, y, w, h); wr_cmd(0x22); wr_dat_start(); for (i = 0; i < h; i++) { for (j = 0; j <= w-1; j++) { if(j >= val) { wr_dat_only(Color[BG_COLOR]); } else { wr_dat_only(Color[TXT_COLOR]); } } } wr_dat_stop(); } /******************************************************************************* * Display graphical bitmap image at position x horizontally and y vertically * * (This function is optimized for 16 bits per pixel format, it has to be * * adapted for any other bits per pixel format) * * Parameter: x: horizontal position * * y: vertical position * * w: width of bitmap * * h: height of bitmap * * bitmap: address at which the bitmap data resides * * Return: * *******************************************************************************/ void GLCD_Bitmap (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *bitmap) { int i, j; unsigned short *bitmap_ptr = (unsigned short *)bitmap; GLCD_SetWindow (x, y, w, h); wr_cmd(0x22); wr_dat_start(); for (i = (h-1)*w; i > -1; i -= w) { for (j = 0; j < w; j++) { wr_dat_only (bitmap_ptr[i+j]); } } wr_dat_stop(); } /******************************************************************************* * Scroll content of the whole display for dy pixels vertically * * Parameter: dy: number of pixels for vertical scroll * * Return: * *******************************************************************************/ void GLCD_ScrollVertical (unsigned int dy) { #if (LANDSCAPE == 0) static unsigned int y = 0; y = y + dy; while (y >= HEIGHT) y -= HEIGHT; if (Himax) { wr_reg(0x01, 0x08); wr_reg(0x14, y>>8); /* VSP MSB */ wr_reg(0x15, y&0xFF); /* VSP LSB */ } else { wr_reg(0x6A, y); wr_reg(0x61, 3); } #endif } /******************************************************************************* * Write a command to the LCD controller * * Parameter: cmd: command to write to the LCD * * Return: * *******************************************************************************/ void GLCD_WrCmd (unsigned char cmd) { wr_cmd (cmd); } /******************************************************************************* * Write a value into LCD controller register * * Parameter: reg: lcd register address * * val: value to write into reg * * Return: * *******************************************************************************/ void GLCD_WrReg (unsigned char reg, unsigned short val) { wr_reg (reg, val); } /******************************************************************************/