最近闲来无事 把bf533的外围接口学习一下，通过SPI的总线设置一下Nokia 5110，这款液晶是我买430时带的 自己写下底层驱动 BF533上有SPI接口 这就省了很多麻烦事。这里先用一般的方式写下驱动。一会再用DMA的方式写一下。因为主要是学习DSP的外设，所以液晶只是配置好，并没有设置汉字 图片的读写，这些东西不值得我浪费时间了。本着LINUX的开放源码原则，所有函数如下，保证没有BUG.
现在开始：
//==============================================
//
//Init.c 文件
//接口方式 RST<->PF3 CE<->PF4 DC<->PF1
//DIN<->MOSI CLK<->SPI_C 其他的vcc gnd就不用我说了吧
//
//==============================================
#include <head.h>
void Init_EBIU(void)
{
*pEBIU_AMBCTL0 = 0x7bb07bb0;
*pEBIU_AMBCTL1 = 0x7bb07bb0;
*pEBIU_AMGCTL = 0x000f;
}
void SPI_lcd_Init(void)
{
int j;
*pFIO_FLAG_C =0x0008; //rst
*pFIO_FLAG_S =0x0008; //rst
for (j=0; j<0xaff0; j++) asm("nop;");
*pSPI_FLG = FLS4; //ce信号
*pSPI_BAUD = 16; // 5MHz
*pSPI_CTL = 0x01 | SIZE | MSTR;
*pSPI_CTL = (*pSPI_CTL | SPE);
for (j=0; j<0xaff0; j++) asm("nop;");
SPI_send_data(0x21,0);
SPI_send_data(0xc8,0);
SPI_send_data(0x06,0);
SPI_send_data(0x13,0);
SPI_send_data(0x20,0); //功能指令
LCD_clear();
SPI_send_data(0x0c,0);
for (j=0; j<0xaff0; j++) asm("nop;");
}
//SPI send a word function
void SPI_send_data(unsigned short data,unsigned short command)
{
if (command==0) *pFIO_FLAG_C=0x02;
else *pFIO_FLAG_S=0x02;
*pSPI_TDBR = data;
while ((*pSPI_STAT & 0x0001) == 0) ;
}
//=====================================================
//
//LCD.C文件
//
//=====================================================
#include <head.h>
void LCD_clear(void)
{
unsigned int i;
SPI_send_data(0x0c, 0);
SPI_send_data(0x80, 0);
for (i=0; i<504; i++)
SPI_send_data(0,1);
}
void LCD_set_XY(unsigned char X, unsigned char Y)
{
SPI_send_data(0x40 | Y, 0); // column
SPI_send_data(0x80 | X, 0); // row
}
void LCD_write_char(unsigned char c)
{
unsigned char line;
c -=32; //english_6*8_pixel 中所列的ASCII码少了第一列
for (line=0; line<8; line++)
SPI_send_data(font6x8[c][line], 1);
}
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s)
{
LCD_set_XY(X,Y);
while (*s)
{
LCD_write_char(*s);
s++;
}
}
void LCD_write_chinese_string(unsigned char X, unsigned char Y,
unsigned char ch_with,unsigned char num,
unsigned char line,unsigned char row)
{
unsigned char i,n;
LCD_set_XY(X,Y); //设置初始位置
for (i=0;i<num;) //注意FOR 语句的 i 值在什么时候开始加1
{
for (n=0; n<ch_with*2; n++) //写一个汉字,ch_with=1
{
if (n==ch_with) //写汉字的下半部分
{
if (i==0) LCD_set_XY(X,Y+1);
else
LCD_set_XY((X+(ch_with+row)*i),Y+1);
}
SPI_send_data(write_chinese[line+i][n],1);
}
i++;
LCD_set_XY((X+(ch_with+row)*i),Y);
}
}
//===========================================
//
//main.c 文件
//
//==========================================
//** file: spi.c
//** target: ADSP-BF533
//** creat time: 2008-8-19
#include <head.h>
//SPI interface funtion
const unsigned char font6x8[][6] =
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, // sp
{ 0x00, 0x00, 0x00, 0x2f, 0x00, 0x00 }, // !
{ 0x00, 0x00, 0x07, 0x00, 0x07, 0x00 }, // "
{ 0x00, 0x14, 0x7f, 0x14, 0x7f, 0x14 }, // #
{ 0x00, 0x24, 0x2a, 0x7f, 0x2a, 0x12 }, // $
{ 0x00, 0x62, 0x64, 0x08, 0x13, 0x23 }, // %
{ 0x00, 0x36, 0x49, 0x55, 0x22, 0x50 }, // &
{ 0x00, 0x00, 0x05, 0x03, 0x00, 0x00 }, // '
{ 0x00, 0x00, 0x1c, 0x22, 0x41, 0x00 }, // (
{ 0x00, 0x00, 0x41, 0x22, 0x1c, 0x00 }, // )
{ 0x00, 0x14, 0x08, 0x3E, 0x08, 0x14 }, // *
{ 0x00, 0x08, 0x08, 0x3E, 0x08, 0x08 }, // +
{ 0x00, 0x00, 0x00, 0xA0, 0x60, 0x00 }, // ,
{ 0x00, 0x08, 0x08, 0x08, 0x08, 0x08 }, // -
{ 0x00, 0x00, 0x60, 0x60, 0x00, 0x00 }, // .
{ 0x00, 0x20, 0x10, 0x08, 0x04, 0x02 }, // /
{ 0x00, 0x3E, 0x51, 0x49, 0x45, 0x3E }, // 0
{ 0x00, 0x00, 0x42, 0x7F, 0x40, 0x00 }, // 1
{ 0x00, 0x42, 0x61, 0x51, 0x49, 0x46 }, // 2
{ 0x00, 0x21, 0x41, 0x45, 0x4B, 0x31 }, // 3
{ 0x00, 0x18, 0x14, 0x12, 0x7F, 0x10 }, // 4
{ 0x00, 0x27, 0x45, 0x45, 0x45, 0x39 }, // 5
{ 0x00, 0x3C, 0x4A, 0x49, 0x49, 0x30 }, // 6
{ 0x00, 0x01, 0x71, 0x09, 0x05, 0x03 }, // 7
{ 0x00, 0x36, 0x49, 0x49, 0x49, 0x36 }, // 8
{ 0x00, 0x06, 0x49, 0x49, 0x29, 0x1E }, // 9
{ 0x00, 0x00, 0x36, 0x36, 0x00, 0x00 }, // :
{ 0x00, 0x00, 0x56, 0x36, 0x00, 0x00 }, // ;
{ 0x00, 0x08, 0x14, 0x22, 0x41, 0x00 }, // <
{ 0x00, 0x14, 0x14, 0x14, 0x14, 0x14 }, // =
{ 0x00, 0x00, 0x41, 0x22, 0x14, 0x08 }, // >
{ 0x00, 0x02, 0x01, 0x51, 0x09, 0x06 }, // ?
{ 0x00, 0x32, 0x49, 0x59, 0x51, 0x3E }, // @
{ 0x00, 0x7C, 0x12, 0x11, 0x12, 0x7C }, // A
{ 0x00, 0x7F, 0x49, 0x49, 0x49, 0x36 }, // B
{ 0x00, 0x3E, 0x41, 0x41, 0x41, 0x22 }, // C
{ 0x00, 0x7F, 0x41, 0x41, 0x22, 0x1C }, // D
{ 0x00, 0x7F, 0x49, 0x49, 0x49, 0x41 }, // E
{ 0x00, 0x7F, 0x09, 0x09, 0x09, 0x01 }, // F
{ 0x00, 0x3E, 0x41, 0x49, 0x49, 0x7A }, // G
{ 0x00, 0x7F, 0x08, 0x08, 0x08, 0x7F }, // H
{ 0x00, 0x00, 0x41, 0x7F, 0x41, 0x00 }, // I
{ 0x00, 0x20, 0x40, 0x41, 0x3F, 0x01 }, // J
{ 0x00, 0x7F, 0x08, 0x14, 0x22, 0x41 }, // K
{ 0x00, 0x7F, 0x40, 0x40, 0x40, 0x40 }, // L
{ 0x00, 0x7F, 0x02, 0x0C, 0x02, 0x7F }, // M
{ 0x00, 0x7F, 0x04, 0x08, 0x10, 0x7F }, // N
{ 0x00, 0x3E, 0x41, 0x41, 0x41, 0x3E }, // O
{ 0x00, 0x7F, 0x09, 0x09, 0x09, 0x06 }, // P
{ 0x00, 0x3E, 0x41, 0x51, 0x21, 0x5E }, // Q
{ 0x00, 0x7F, 0x09, 0x19, 0x29, 0x46 }, // R
{ 0x00, 0x46, 0x49, 0x49, 0x49, 0x31 }, // S
{ 0x00, 0x01, 0x01, 0x7F, 0x01, 0x01 }, // T
{ 0x00, 0x3F, 0x40, 0x40, 0x40, 0x3F }, // U
{ 0x00, 0x1F, 0x20, 0x40, 0x20, 0x1F }, // V
{ 0x00, 0x3F, 0x40, 0x38, 0x40, 0x3F }, // W
{ 0x00, 0x63, 0x14, 0x08, 0x14, 0x63 }, // X
{ 0x00, 0x07, 0x08, 0x70, 0x08, 0x07 }, // Y
{ 0x00, 0x61, 0x51, 0x49, 0x45, 0x43 }, // Z
{ 0x00, 0x00, 0x7F, 0x41, 0x41, 0x00 }, // [
{ 0x00, 0x55, 0x2A, 0x55, 0x2A, 0x55 }, // 55
{ 0x00, 0x00, 0x41, 0x41, 0x7F, 0x00 }, // ]
{ 0x00, 0x04, 0x02, 0x01, 0x02, 0x04 }, // ^
{ 0x00, 0x40, 0x40, 0x40, 0x40, 0x40 }, // _
{ 0x00, 0x00, 0x01, 0x02, 0x04, 0x00 }, // '
{ 0x00, 0x20, 0x54, 0x54, 0x54, 0x78 }, // a
{ 0x00, 0x7F, 0x48, 0x44, 0x44, 0x38 }, // b
{ 0x00, 0x38, 0x44, 0x44, 0x44, 0x20 }, // c
{ 0x00, 0x38, 0x44, 0x44, 0x48, 0x7F }, // d
{ 0x00, 0x38, 0x54, 0x54, 0x54, 0x18 }, // e
{ 0x00, 0x08, 0x7E, 0x09, 0x01, 0x02 }, // f
{ 0x00, 0x18, 0xA4, 0xA4, 0xA4, 0x7C }, // g
{ 0x00, 0x7F, 0x08, 0x04, 0x04, 0x78 }, // h
{ 0x00, 0x00, 0x44, 0x7D, 0x40, 0x00 }, // i
{ 0x00, 0x40, 0x80, 0x84, 0x7D, 0x00 }, // j
{ 0x00, 0x7F, 0x10, 0x28, 0x44, 0x00 }, // k
{ 0x00, 0x00, 0x41, 0x7F, 0x40, 0x00 }, // l
{ 0x00, 0x7C, 0x04, 0x18, 0x04, 0x78 }, // m
{ 0x00, 0x7C, 0x08, 0x04, 0x04, 0x78 }, // n
{ 0x00, 0x38, 0x44, 0x44, 0x44, 0x38 }, // o
{ 0x00, 0xFC, 0x24, 0x24, 0x24, 0x18 }, // p
{ 0x00, 0x18, 0x24, 0x24, 0x18, 0xFC }, // q
{ 0x00, 0x7C, 0x08, 0x04, 0x04, 0x08 }, // r
{ 0x00, 0x48, 0x54, 0x54, 0x54, 0x20 }, // s
{ 0x00, 0x04, 0x3F, 0x44, 0x40, 0x20 }, // t
{ 0x00, 0x3C, 0x40, 0x40, 0x20, 0x7C }, // u
{ 0x00, 0x1C, 0x20, 0x40, 0x20, 0x1C }, // v
{ 0x00, 0x3C, 0x40, 0x30, 0x40, 0x3C }, // w
{ 0x00, 0x44, 0x28, 0x10, 0x28, 0x44 }, // x
{ 0x00, 0x1C, 0xA0, 0xA0, 0xA0, 0x7C }, // y
{ 0x00, 0x44, 0x64, 0x54, 0x4C, 0x44 }, // z
{ 0x14, 0x14, 0x14, 0x14, 0x14, 0x14 } // horiz lines
};
char write_chinese[][24]={
//徐
{0x28,0xF4,0x0B,0x50,0x58,0x54,0xF3,0x52,0x54,0x48,0x50,0x00,0x00,0x07,0x00,0x04,0x03,0x04,0x07,0x00,0x01,0x06,0x00,0x00},
//海
{0x99,0x62,0x58,0xC4,0x7B,0x4A,0xEA,0x4A,0xCA,0x7A,0x42,0x00,0x07,0x00,0x00,0x01,0x01,0x01,0x05,0x05,0x07,0x01,0x01,0x00},
//洋
{0x09,0xD2,0x00,0x84,0xA5,0xA6,0xFC,0xA6,0xA5,0xA4,0x84,0x00,0x01,0x07,0x00,0x00,0x00,0x00,0x07,0x00,0x00,0x00,0x00,0x00},
};
//=====================================================
//
//ce<->pf4 dc<->pf1 rst<-pf3>
//
//=====================================================
void main(void)
{
*pFIO_DIR = 0x0f;
Init_EBIU();
SPI_lcd_Init();
LCD_write_english_string(12,3,"NOIt"); //okia 5110 LCD
// LCD_write_chinese_string(5,0,12,4,0,5);
}
//=================================================
//
//头文件 HEAD.H
//
//==================================================
#ifndef _HEAD_H
#define _HEAD_H
#include <ccblkfn.h>
#include <cdefBF533.h>
#include <stdio.h>
#include <sys\exception.h>
void Init_EBIU(void);
void SPI_lcd_Init(void);
void SPI_send_data(unsigned short data,unsigned short command);
void LCD_clear(void);
void LCD_set_XY(unsigned char X, unsigned char Y);
void LCD_write_char(unsigned char c);
void LCD_write_english_string(unsigned char X,unsigned char Y,char *s);
void LCD_write_chinese_string(unsigned char X, unsigned char Y,
unsigned char ch_with,unsigned char num,
unsigned char line,unsigned char row);
extern const unsigned char font6x8[][6];
extern char write_chinese[][24];
#endif |
