avr 小问题

2012-02-20 04:57:21 167 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

WIN7下解决AVR编译Invalid argument异常的问题问题现象： avr-objcopy -O ihex -R .eeprom xxxx.elf xxxx.hex avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ihex xxxx.elf xxxx.ee 阅读详情

刚学习avr，很多东西还不懂！之前看别人的代码，现在有几个问题不懂，希望你们都够帮忙解决一下！

#define ENABLE_TIMER_INTERRUPT( ) ( TIMSK0 |= ( 1<< OCIE0A ) )
#define DISABLE_TIMER_INTERRUPT( ) ( TIMSK0 &= ~( 1<< OCIE0A ) )
#define CLEAR_TIMER_INTERRUPT( ) ( TIFR0 |= ((1 << OCF0A) ) )
#define ENABLE_EXTERNAL0_INTERRUPT( ) ( GIMSK |= ( 1<< INT0 ) )
#define DISABLE_EXTERNAL0_INTERRUPT( ) ( GIMSK &= ~( 1<< INT0 ) )

这几个定义都不知道是什么意思！

../serial_port_24.c:187: error: `GIMSK' undeclared (first use in this function)
../serial_port_24.c:187: error: (Each undeclared identifier is reported only once
../serial_port_24.c:187: error: for each function it appears in.)
../serial_port_24.c:189: error: `TIMSK0' undeclared (first use in this function)
../serial_port_24.c:189: error: `OCIE0A' undeclared (first use in this function)
../serial_port_24.c:190: error: `TCCR0B' undeclared (first use in this function)
../serial_port_24.c:196: error: `OCR0A' undeclared (first use in this function)
../serial_port_24.c:199: error: `TIFR0' undeclared (first use in this function)
../serial_port_24.c:199: error: `OCF0A' undeclared (first use in this function)

只有一编译就会出现这个问题！

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