ICC AVR 过渡到 AVR STUDIO时要注意的几个问题.doc

ICC AVR 过渡到 AVR STUDIO时要注意的几个问题 列出时要注意的几个 1.头文件更改 ICCAVR使用的是“#include?iom16v.h” AVR?STUDIO更改为“#include?avr/io.h” 在ICCMCU的头文件是不同的，在AVR?studio中所有MCU的头文件都用“#include?avr/io.h” 2.AVR?studio中延时函数可直接使用“#include?util/delay.h”头文件中的延时函数： void?_delay_us?(double?__us); void?_delay_ms(double?__ms); 两个函数的参数均为double （函数最大延时时间是有限制的，参考“util/delay.h” 3.中断函数写法不同 在ICC?中断函数名可以自定义 列出ATmega16 #define?IT_RESET????????1#define?IT_INT0?????????2#define?IT_INT1?????????3#define?IT_TIMER2_COMP?4#define?IT_TIMER2_OVF???5#define?IT_TIMER1_CAPT?6#define?IT_TIMER1_COMPA?7#define?IT_TIMER1_COMPB?8#define?IT_TIMER1_OVF???9#define?IT_TIMER0_OVF???10#define?IT_SPI_STC??????11#define?IT_USART_RXC????12#define?IT_USART_UDRE???13#define?IT_USART_TXC????14#define?IT_ADC??????????15#define?IT_EE_RDY???????16#define?IT_ANA_COMP?????17#define?IT_TWI??????????18#define?IT_INT2?????????19#define?IT_TIMER0_COMP?20#define?IT_SPM_RDY??????21 #pragma?interrupt_handler?user_fuc:Interrupt?vector?number 如： #pragma?interrupt_handler?Time2:iv_TIMER2_COMP void?Time2() { } AVR?studio中需添加“#include?avr/interrupt.h”头文件且中断函数名不能自定义 如： #include?avr/interrupt.h ISR(SIG_OVERFLOW0)???????///计数器0溢出中断（ICC?AVR?过渡到?AVR?STUDIO 4.一些库函数的不同 ICC????????????????????????????????????????AVR?studio nop()????????????????????????????????????asm(nop) WDR()?????????????????????????????????asm(wdr) CLI()??????????????????????????????????????cli() SEI()??????????????????????????????????????sei()