51单片机控制步进电机正反转并实现调速的程序设计-#define delayNOP(); {_nop_();_nop_();_nop_();_nop_();};
unsigned char code FFW[8]={0xfe,0xfc,0xfd,0xf9,0xfb,0xf3,0xf7,0xf6}; //??
unsigned char code REV[8]={0xf6,0xf7,0xf3,0xfb,0xf9,0xfd,0xfc,0xfe}; //??
//unsigned char code FFW[8]={0x01,0x03,0x02,0x06,0x04,0x0c,0x08,0x09}; //??
//unsigned char code REV[8]={0x09,0x08,0x0c,0x04,0x06,0x02,0x03,0x01}; //??
AREASTMFD,CODE,READONLYENTRYCODE32STARTsubsp,sp,#4;经过此条语句过后,sp的值由原来的0变为了0xfffffffcmovr0,#0x1d;将0x1d赋
AREABOOTCODE,CODE,READONLYENTRYBootloAdLDRr0,=0x00LDRr1,=0x00LDRr2,=0x00LDRr3,=0x00END1)在ARM程序里,如何指定
1stm32定义常量不要code关键字//定义全1地址常量staticconstuip_ipaddr_tcodeall_ones_addr=#ifUIP_CONF_IPV6{0xffff,0xffff
刚接手STM32时,你只编写一个intmain(){while(1);}BUILD://ProgramSize:Code=340RO-data=252RW-data=0ZI-data=1632编译后,