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Copy pathGLCD_SPI_LPC1700.c
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GLCD_SPI_LPC1700.c
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/******************************************************************************/
/* 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 "Font_16x24_h.h"
#include "Font_6x8_h.h"
#include "GLCD.h"
#include <lpc17xx.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); }
/******************************************************************************/