OSD.zip_GT32L32S0140_msp430

#include "font_gt32.h" #define CS_0 P4OUT&=~BIT0 #define CS_1 P4OUT|=BIT0 /******P4.1->MOSI,P4.2->MISO********/ /******P4.0->CS, P4.3->CLK**********/ void SPI_Init() { P4SEL|=BIT1+BIT2+BIT3; //设置P9.1~P9.3外设功能 P4DIR|=BIT0+BIT1+BIT3; //设置CS,MOSI,CLK为输出方向 P4DIR&=~BIT2; //设置MISO为输入方向 P4DS|=BIT0+BIT1+BIT3; P4REN|=BIT2; //设置MISO上拉 P4OUT|=BIT2; /********以下初始化UCB2**********/ UCB1CTL1|=UCSWRST; //改变SPI设置时应该重置UCSWRST位 UCB1CTL0 =UCCKPL+UCMSB+UCMST+UCMODE_0+UCSYNC; //3线SPI主机模式，时钟极性高，先发MSB UCB1CTL1|=UCSSEL_2; ///选择SMCLK UCB1BR0=2; //25M/2=12.5M <30M UCB1BR1=0; UCB1CTL1&=~UCSWRST; UCB1IE &= ~(UCRXIE+UCTXIE); //不开中断 UCB1IFG&=~UCRXIFG; } unsigned char SPI_ReceiveByte() //接收一个字节 { unsigned char byte; while (!(UCB1IFG&UCTXIFG)); //等待TXBUF为空 UCB1TXBUF=0x00; //伪写入，主要是为了开启时钟 while (!(UCB1IFG&UCRXIFG)); //等待RXBUF接收完成 byte=UCB1RXBUF; return byte; } void SPI_SendByte(unsigned char byte) //发送一个字节 { while (!(UCB1IFG&UCTXIFG)); //等待TXBUF为空 UCB1TXBUF=byte; while(UCB1STAT&UCBUSY); //等待发送完成 UCB1RXBUF; //伪读取清空RXBUF } unsigned char ReadByte(unsigned long addr) { unsigned char RT_data=0x03; CS_0; SPI_SendByte(RT_data); SPI_SendByte((addr&0xff0000)>>16); SPI_SendByte((addr&0x00ff00)>>8); SPI_SendByte(addr&0x0000ff); RT_data=SPI_ReceiveByte(); CS_1; return (RT_data); } void GT32GetFontBuffer(unsigned char *pBuff,unsigned char DataLen,unsigned long addr) { unsigned char RT_data=0x03; unsigned char i; CS_0; SPI_SendByte(RT_data); SPI_SendByte((addr&0xff0000)>>16); SPI_SendByte((addr&0x00ff00)>>8); SPI_SendByte(addr&0x0000ff); for(i=0;i<DataLen;i++) { *pBuff = SPI_ReceiveByte(); pBuff++; } CS_1; } unsigned long GT32GetFontAddr(FontType fontType, unsigned int fontCode) { unsigned long Address, BaseAdd; unsigned char MSB,LSB; MSB = (fontCode>>8)&0xff; LSB = fontCode&0xff; switch (fontType) { case ASCII_7x8: BaseAdd=0x080300; if ((fontCode >= 0x20) && (fontCode <= 0x7E)) Address = (fontCode - 0x20 ) * 8+BaseAdd; break; case ASCII_8x16: BaseAdd=0x080D80; if ((fontCode >= 0x20) && (fontCode <= 0x7E)) Address = (fontCode - 0x20 ) * 16+BaseAdd; break; case ASCII_5x7: BaseAdd=0x080000; if ((fontCode >= 0x20) && (fontCode <= 0x7E)) Address = (fontCode - 0x20 ) * 8+BaseAdd; break; case ASCII_6x12: BaseAdd=0x080D80; if ((fontCode >= 0x20) && (fontCode <= 0x7E)) Address = (fontCode - 0x20 ) * 16+BaseAdd; break; case ASCII_12x24: BaseAdd=0x082D80; if ((fontCode >= 0x20) && (fontCode <= 0x7E) ) Address = (fontCode - 0x20 ) * 48+BaseAdd; break; case ASCII_16x32: BaseAdd=0x091E00; if ((fontCode >= 0x20) && (fontCode <= 0x7E) ) Address = (fontCode - 0x20 ) * 64+BaseAdd; break; case GB2312_12x12: BaseAdd=0x09670E; if(MSB >=0xA1 && MSB <= 0Xa9 && LSB >=0xA1) Address =( (MSB - 0xA1) * 94 + (LSB - 0xA1))*24+ BaseAdd; else if(MSB >=0xB0 && MSB <= 0xF7 && LSB >=0xA1) Address = ((MSB - 0xB0) * 94 + (LSB - 0xA1)+ 846)*24+ BaseAdd; break; case GB2312_16x16: BaseAdd=0x0C30DE; if(MSB >=0xA1 && MSB <= 0Xa9 && LSB >=0xA1) Address =( (MSB - 0xA1) * 94 + (LSB - 0xA1))*32+ BaseAdd; else if(MSB >=0xB0 && MSB <= 0xF7 && LSB >=0xA1) Address = ((MSB - 0xB0) * 94 + (LSB - 0xA1)+ 846)*32+ BaseAdd; break; case BATTERY_12x12: BaseAdd=0x3F4003; Address = BaseAdd+fontCode*24; break; } return Address; }