var.h

一个在mck2407板上控制无刷电机恒速运行的程序

#define C_TIME 20





#define pwm_half_per 2000
                                /*4000 PWM=5Khz*/
                                /*2000 PWM=10Khz*//*systemclock=40M*/
                                
								/*3000 PWM=5Khz*/ 
								/*1500 PWM=10Khz*/
								/*150 PWM=100Khz*/  /*systemclock=30M*/
/*#define PWM_DUTY (pwm_half_per/10*9)*/
								

unsigned int i;
unsigned int hall=0x000;
unsigned int time_cnt=C_TIME;