These are the examples provided for [[/users/frank26080115/libraries/LPC1700CMSIS_Lib/]] Note, the entire "program" is not compilable!
Diff: LCD/QVGA_TFT_LCD/GLCD_SPI_LPC1700.c
- Revision:
- 0:bf7b9fba3924
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/LCD/QVGA_TFT_LCD/GLCD_SPI_LPC1700.c Sun Mar 20 05:38:56 2011 +0000 @@ -0,0 +1,607 @@ +/******************************************************************************/ +/* GLCD_SPI_LPC1700.c: LPC1700 low level Graphic LCD (320x240 pixels) driven */ +/* with SPI functions */ +/******************************************************************************/ +/* This file is part of the uVision/ARM development tools. */ +/* Copyright (c) 2005-2009 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 <lpc17xx.h> +#include "GLCD.h" +#include "Font_24x16.h" + +/*********************** 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 ------------------------*/ + +#define WIDTH 320 /* Screen Width (in pixels) */ +#define HEIGHT 240 /* Screen Hight (in pixels) */ +#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 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 command to LCD controller * +* Parameter: c: command to be written * +* Return: * +*******************************************************************************/ + +static __INLINE void wr_cmd (unsigned char c) { + + LCD_CS(0) + spi_send(SPI_START | SPI_WR | SPI_INDEX); /* Write : RS = 0, RW = 0 */ + spi_send(0); + spi_send(c); + LCD_CS(1) +} + + +/******************************************************************************* +* Write data to LCD controller * +* Parameter: c: data to be written * +* Return: * +*******************************************************************************/ + +static __INLINE void wr_dat (unsigned short c) { + + LCD_CS(0) + spi_send(SPI_START | SPI_WR | SPI_DATA); /* Write : RS = 1, RW = 0 */ + spi_send((c >> 8)); /* Write D8..D15 */ + spi_send((c & 0xFF)); /* Write D0..D7 */ + LCD_CS(1) +} + + +/******************************************************************************* +* Start of data writing to 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 LCD controller * +* Parameter: * +* Return: * +*******************************************************************************/ + +static __INLINE void wr_dat_stop (void) { + + LCD_CS(1) +} + + +/******************************************************************************* +* Data writing to LCD controller * +* Parameter: c: data to be written * +* Return: * +*******************************************************************************/ + +static __INLINE void wr_dat_only (unsigned short c) { + + spi_send((c >> 8)); /* Write D8..D15 */ + spi_send((c & 0xFF)); /* Write D0..D7 */ +} + + +/******************************************************************************* +* Read data from 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 */ + val = spi_send(0); /* Read D8..D15 */ + val <<= 8; + val |= spi_send(0); /* Read D0..D7 */ + LCD_CS(1) + return (val); +} + +/******************************************************************************* +* Write to LCD register * +* Parameter: reg: register to be read * +* val: value to write to register * +*******************************************************************************/ + +static __INLINE void wr_reg (unsigned char reg, unsigned short val) { + + wr_cmd(reg); + wr_dat(val); +} + + +/******************************************************************************* +* Read from LCD register * +* Parameter: reg: register to be read * +* Return: value read from 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. 25 MBit used for Data Transfer @ 100MHz */ + LPC_SSP1->CR0 = 0xC7; + 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 touch */ + 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); + } + if (driverCode == 0xC990) { /* LCD without touch */ + 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 */ + wr_reg(0x60, 0xA700); /* Gate Scan Line */ + if (driverCode == 0x5408) /* LCD with touch */ + wr_reg(0x60, 0xA700); /* Gate Scan Line */ + if (driverCode == 0xC990) /* LCD without touch */ + 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=10 (Horizontal : increment, Vertical : increment) + AM=1 (address is updated in vertical writing direction) */ + wr_reg(0x03, 0x1038); + + wr_reg(0x07, 0x0137); /* 262K color and display ON */ + LPC_GPIO4->FIOSET = 0x10000000; +} + + +/******************************************************************************* +* Set draw window region to whole screen * +* Parameter: * +* Return: * +*******************************************************************************/ + +void GLCD_WindowMax (void) { + + wr_reg(0x50, 0); /* Horizontal GRAM Start Address */ + wr_reg(0x51, HEIGHT-1); /* Horizontal GRAM End Address (-1) */ + wr_reg(0x52, 0); /* Vertical GRAM Start Address */ + wr_reg(0x53, WIDTH-1); /* Vertical GRAM End Address (-1) */ +} + + +/******************************************************************************* +* Draw a pixel in foreground color * +* Parameter: x: horizontal position * +* y: vertical position * +* Return: * +*******************************************************************************/ + +void GLCD_PutPixel (unsigned int x, unsigned int y) { + + wr_reg(0x20, y); + wr_reg(0x21, WIDTH-1-x); + 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_reg(0x20, 0); + wr_reg(0x21, 0); + 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 * +* c: pointer to character bitmap * +* Return: * +*******************************************************************************/ + +void GLCD_DrawChar (unsigned int x, unsigned int y, unsigned short *c) { + int idx = 0, i, j; + + x = WIDTH-x-CHAR_W; + wr_reg(0x50, y); /* Horizontal GRAM Start Address */ + wr_reg(0x51, y+CHAR_H-1); /* Horizontal GRAM End Address (-1) */ + wr_reg(0x52, x); /* Vertical GRAM Start Address */ + wr_reg(0x53, x+CHAR_W-1); /* Vertical GRAM End Address (-1) */ + + wr_reg(0x20, y); + wr_reg(0x21, x); + wr_cmd(0x22); + wr_dat_start(); + for (j = 0; j < CHAR_H; j++) { + for (i = CHAR_W-1; i >= 0; i--) { + 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 * +* c: ascii character * +* Return: * +*******************************************************************************/ + +void GLCD_DisplayChar (unsigned int ln, unsigned int col, unsigned char c) { + + c -= 32; + GLCD_DrawChar(col * CHAR_W, ln * CHAR_H, (unsigned short *)&Font_24x16[c * CHAR_H]); +} + + +/******************************************************************************* +* Disply string on given line * +* Parameter: ln: line number * +* col: column number * +* s: pointer to string * +* Return: * +*******************************************************************************/ + +void GLCD_DisplayString (unsigned int ln, unsigned int col, unsigned char *s) { + + GLCD_WindowMax(); + while (*s) { + GLCD_DisplayChar(ln, col++, *s++); + } +} + + +/******************************************************************************* +* Clear given line * +* Parameter: ln: line number * +* Return: * +*******************************************************************************/ + +void GLCD_ClearLn (unsigned int ln) { + + GLCD_WindowMax(); + GLCD_DisplayString(ln, 0, " "); +} + +/******************************************************************************* +* 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; + + x = WIDTH-x-w; + wr_reg(0x50, y); /* Horizontal GRAM Start Address */ + wr_reg(0x51, y+CHAR_H-1); /* Horizontal GRAM End Address (-1) */ + wr_reg(0x52, x); /* Vertical GRAM Start Address */ + wr_reg(0x53, x+w-1); /* Vertical GRAM End Address (-1) */ + + val = (val * w) >> 10; /* Scale value for 24x12 characters */ + wr_reg(0x20, y); + wr_reg(0x21, x); + wr_cmd(0x22); + wr_dat_start(); + for (i = 0; i < h; i++) { + for (j = w-1; j >= 0; j--) { + 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; + + x = WIDTH-x-w; + wr_reg(0x50, y); /* Horizontal GRAM Start Address */ + wr_reg(0x51, y+h-1); /* Horizontal GRAM End Address (-1) */ + wr_reg(0x52, x); /* Vertical GRAM Start Address */ + wr_reg(0x53, x+w-1); /* Vertical GRAM End Address (-1) */ + + wr_reg(0x20, y); + wr_reg(0x21, x); + wr_cmd(0x22); + wr_dat_start(); + for (j = 0; j < h; j++) { + bitmap_ptr += w-1; + for (i = 0; i < w; i++) { + wr_dat_only(*bitmap_ptr--); + } + bitmap_ptr += w+1; + } + 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; + + x = WIDTH-x-w; + wr_reg(0x50, y); /* Horizontal GRAM Start Address */ + wr_reg(0x51, y+h-1); /* Horizontal GRAM End Address (-1) */ + wr_reg(0x52, x); /* Vertical GRAM Start Address */ + wr_reg(0x53, x+w-1); /* Vertical GRAM End Address (-1) */ + + wr_reg(0x20, y); + wr_reg(0x21, x); + wr_cmd(0x22); + wr_dat_start(); + bitmap_ptr += (h*w)-1; + for (j = 0; j < h; j++) { + for (i = 0; i < w; i++) { + wr_dat_only(*bitmap_ptr--); + } + } + wr_dat_stop(); +} + +/******************************************************************************/