frederic blanc
display control QVGA TFT MCB1700 KEIL
GLCD_MCB1700.cpp
- Committer:
- fblanc
- Date:
- 2015-02-13
- Revision:
- 1:0ae206eb6e55
- Parent:
- GLCD_MCB1700.c@ 0:b96b9110daf9
File content as of revision 1:0ae206eb6e55:
#include "mbed.h"
/******************************************************************************/
/* 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) 2005-2010 Keil Software. 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 "mbed.h"
#include "GLCD_MCB1700.h"
#include "font_6x8_h.h"
#include "font_16x24_h.h"
/************************** Orientation configuration ************************/
#define HORIZONTAL 1 /* If vertical = 0, if horizontal = 1 */
/*********************** 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)
/* 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 (HORIZONTAL == 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 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 */
/*---------------------------- Global variables ------------------------------*/
/******************************************************************************/
static volatile unsigned short TextColor = Black, BackColor = White;
/************************ 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--);
}
/*******************************************************************************
* Send 1 byte over the serial communication *
* Parameter: byte: byte to be sent *
* Return: byte read while sending *
*******************************************************************************/
static __inline unsigned char spi_send (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_send(SPI_START | SPI_WR | SPI_INDEX); /* Write : RS = 0, RW = 0 */
spi_send(0);
spi_send(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_send(SPI_START | SPI_WR | SPI_DATA); /* Write : RS = 1, RW = 0 */
spi_send((dat >> 8)); /* Write D8..D15 */
spi_send((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_send(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_send((dat >> 8)); /* Write D8..D15 */
spi_send((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_send(SPI_START | SPI_RD | SPI_DATA); /* Read: RS = 1, RW = 1 */
spi_send(0); /* Dummy read 1 */
val = spi_send(0); /* Read D8..D15 */
val <<= 8;
val |= spi_send(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());
}
/************************ Exported functions **********************************/
/*******************************************************************************
* Initialize the Graphic LCD controller *
* Parameter: *
* Return: *
*******************************************************************************/
void GLCD_Init (void) {
static 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;
delay(5); /* Delay 50 ms */
driverCode = rd_reg(0x00);
/* Start Initial Sequence --------------------------------------------------*/
wr_reg(0x01, 0x0100); /* Set SS bit */
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 --------------------------------------------------*/
if (driverCode == 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);
}
else { /* 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);
}
/* 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 */
if (driverCode == 0x5408) /* LCD with SPFD5408 LCD Controller */
wr_reg(0x60, 0xA700); /* Gate Scan Line */
else /* LCD with other LCD Controller */
wr_reg(0x60, 0x2700); /* Gate Scan Line */
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 (HORIZONTAL == 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) {
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);
}
/*******************************************************************************
* Set draw window region to whole screen *
* Parameter: *
* Return: *
*******************************************************************************/
void GLCD_WindowMax (void) {
#if (HORIZONTAL == 1)
GLCD_SetWindow (0, 0, HEIGHT, WIDTH);
#else
GLCD_SetWindow (0, 0, WIDTH, HEIGHT);
#endif
}
/*******************************************************************************
* Draw a pixel in foreground color *
* Parameter: x: horizontal position *
* y: vertical position *
* Return: *
*******************************************************************************/
void GLCD_PutPixel (unsigned int x, unsigned int y) {
#if (HORIZONTAL == 1)
wr_reg(0x20, y);
wr_reg(0x21, WIDTH-1-x);
#else
wr_reg(0x20, x);
wr_reg(0x21, y);
#endif
wr_cmd(0x22);
wr_dat(TextColor);
}
/*******************************************************************************
* Set foreground color *
* Parameter: color: foreground color *
* Return: *
*******************************************************************************/
void GLCD_SetTextColor (unsigned short color) {
TextColor = color;
}
/*******************************************************************************
* Set background color *
* Parameter: color: background color *
* Return: *
*******************************************************************************/
void GLCD_SetBackColor (unsigned short color) {
BackColor = 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_U8 (unsigned int x, unsigned int y, unsigned int cw, unsigned int ch, unsigned char *c) {
int idx = 0, i, j;
#if (HORIZONTAL == 1)
x = WIDTH-x-cw;
GLCD_SetWindow(y, x, ch, cw);
#else
GLCD_SetWindow(x, y, cw, ch);
#endif
wr_cmd(0x22);
wr_dat_start();
for (j = 0; j < ch; j++) {
#if (HORIZONTAL == 1)
for (i = cw-1; i >= 0; i--) {
#else
for (i = 0; i <= cw-1; i++) {
#endif
if((c[idx] & (1 << i)) == 0x00) {
wr_dat_only(BackColor);
} else {
wr_dat_only(TextColor);
}
}
c++;
}
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_U16 (unsigned int x, unsigned int y, unsigned int cw, unsigned int ch, unsigned short *c) {
int idx = 0, i, j;
#if (HORIZONTAL == 1)
x = WIDTH-x-cw;
GLCD_SetWindow(y, x, ch, cw);
#else
GLCD_SetWindow(x, y, cw, ch);
#endif
wr_cmd(0x22);
wr_dat_start();
for (j = 0; j < ch; j++) {
#if (HORIZONTAL == 1)
for (i = cw-1; i >= 0; i--) {
#else
for (i = 0; i <= cw-1; i++) {
#endif
if((c[idx] & (1 << i)) == 0x00) {
wr_dat_only(BackColor);
} else {
wr_dat_only(TextColor);
}
}
c++;
}
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_U8 (col * 6, ln * 8, 6, 8, (unsigned char *)&Font_6x8_h [c * 8]);
break;
case 1: /* Font 16 x 24 */
GLCD_DrawChar_U16(col * 16, ln * 24, 16, 24, (unsigned short *)&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) {
GLCD_WindowMax();
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) *
* 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 */
#if (HORIZONTAL == 1)
x = WIDTH-x-w;
GLCD_SetWindow(y, x, h, w);
#else
GLCD_SetWindow(x, y, w, h);
#endif
wr_cmd(0x22);
wr_dat_start();
for (i = 0; i < h; i++) {
#if (HORIZONTAL == 1)
for (j = w-1; j >= 0; j--) {
#else
for (j = 0; j <= w-1; j++) {
#endif
if(j >= val) {
wr_dat_only(BackColor);
} else {
wr_dat_only(TextColor);
}
}
}
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) {
unsigned int i, j;
unsigned short *bitmap_ptr = (unsigned short *)bitmap;
#if (HORIZONTAL == 1)
x = WIDTH-x-w;
GLCD_SetWindow(y, x, h, w);
#else
GLCD_SetWindow(x, y, w, h);
#endif
wr_cmd(0x22);
wr_dat_start();
for (j = 0; j < h; j++) {
#if (HORIZONTAL == 1)
for (i = 0; i < w; i++) {
wr_dat_only(*bitmap_ptr++);
}
#else
bitmap_ptr += w-1;
for (i = 0; i < w; i++) {
wr_dat_only(*bitmap_ptr--);
}
bitmap_ptr += w+1;
#endif
}
wr_dat_stop();
}
/*******************************************************************************
* Display graphical bmp file 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 *
* bmp: address at which the bmp data resides *
* Return: *
*******************************************************************************/
void GLCD_Bmp (unsigned int x, unsigned int y, unsigned int w, unsigned int h, unsigned char *bmp) {
unsigned int i, j;
unsigned short *bitmap_ptr = (unsigned short *)bmp;
#if (HORIZONTAL == 1)
x = WIDTH-x-w;
GLCD_SetWindow(y, x, h, w);
#else
GLCD_SetWindow(x, y, w, h);
#endif
wr_cmd(0x22);
wr_dat_start();
#if (HORIZONTAL == 1)
bitmap_ptr += (h*w)-1;
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
wr_dat_only(*bitmap_ptr--);
}
}
#else
bitmap_ptr += ((h-1)*w);
for (j = 0; j < h; j++) {
for (i = 0; i < w; i++) {
wr_dat_only(*bitmap_ptr++);
}
bitmap_ptr -= 2*w;
}
#endif
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 (HORIZONTAL == 0)
static unsigned int y = 0;
y = y + dy;
while (y >= HEIGHT)
y -= HEIGHT;
wr_reg(0x6A, y);
wr_reg(0x61, 3);
#endif
}
/******************************************************************************/