[AVR问答]

用CodeVisionAVR写TWI的程序有问题

2013-8-10 10:22:39 2341

0 用CodeVisionAVR无法生成下面TWI程序的HEX文件 #include #include #include #define uchar unsigned char #define uint unsigned int #define EEPROM_BUS_ADDRESS 0xa0 #asm .equ__i2c_port=0x15 .equ__sda_bit=1 .equ__scl_bit=0 #endasm #define D1 PORTB.4 #define D2 PORTB.5 #define C1 PORTB.6 #define C2 PORTB.7 flash uchar table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; uchar disp_h,disp_l; uchar i; uchar eeprom_read(uint address) { uchar data; i2c_start(); i2c_write(EEPROM_BUS_ADDRESS); i2c_write(address>>8); i2c_write(address); i2c_start(); i2c_write(EEPROM_BUS_ADDRESS\|1); data=i2c_read(0); i2c_stop(); return data; } void eeprom_write(uint address,uchar data) { i2c_start(); i2c_write(EEPROM_BUS_ADDRESS); i2c_write(address>>8); i2c_write(address); i2c_write(data); i2c_stop(); delay_ms(10); } void display() { disp_h=i/10; disp_l=i%10; C1=1; PORTB=table[disp_h]; delay_ms(10); C1=0; C2=1; PORTB=table[disp_l]; delay_ms(10); C2=0; } void main() { DDRB=0xff; PORTB=0xff; DDRD=0xff; PORTD=0x00; i2c_init(); i=eeprom_read(0x35); if(i==10) i=1; else i++; eeprom_write(0x35,i); while(1) { if(i<=5) { D1=0; D2=1; } else { D1=1; D2=0; } display(); } } 0
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