No.3408
作者：xukeke
邮件：wayachina@163.com
ID：82429
登陆：1次
文章数：1篇
最后登陆IP：125.110.120.173
最后登陆：2007/7/5 15:07:00
注册：2007/7/5 15:05:19
财富：105
发帖时间：2007/7/5 15:07:00
发贴者IP：125.110.120.173
标题：xukeke:pic 一个频率..PWM输出程序出错求救
摘要：No.3408pic 一个频率..PWM输出程序出错求救 #include <pic.h>
#define CCPR2 0x001b
unsigned int new_data_h;
unsigned char new_data_l;
unsigned int sum_data = 0x01; //ad采集的总和
unsigned char flag = 0;
unsigned int in_vref ; //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~`~~~~~~~~~~~~~~~~~~~~~~~~~~~
void initpwm( void ){ //````````````````````````````
CCP2M3 = 1; // ccp2 pwm 模式 RC1
CCP2M2 = 1;
CCP2M1 = 1;
CCP2M0 = 1;
CCPR2L = 0X80;
CCP2X = 0;
CCP2Y = 0;
//````````````````````````````
T2CKPS1 = 0; //16分频
T2CKPS0 = 0;
TOUTPS3 = 0;
TOUTPS2 = 0;
TOUTPS1 = 0;
TOUTPS0 = 0;
TMR2 = 0; //定时器值 0
TMR2ON = 1; //定时器开启
PR2 = 0XFE; //时基
}
//----------------------------------------------
//===========================================================================
void Delays( unsigned int s ){
unsigned int i;
for( i = s; i > 0 ; i-- ){
asm("nop");
asm("nop");
asm("nop");
asm("nop");
}
}
//===========================================================
void pwm_hl_add( unsigned int v,unsigned int ds){
unsigned int buffer_ds;
unsigned int buffer_pwm;
buffer_pwm = v ;
buffer_ds = ds;
while( buffer_pwm > CCPR2L ){
CCPR2L++;
Delays( buffer_ds );
}
}
//===========================================================
//===========================================================
void pwm_hl_uadd( unsigned int v,unsigned int ds){
unsigned int buffer_ds;
unsigned int buffer_pwm;
buffer_pwm = v;
buffer_ds = ds;
while( buffer_pwm < CCPR2L ){
CCPR2L--;
Delays( buffer_ds );
}
}
//=========================================================== void init(void){
CCPR1L=0X00;
CCPR1H=0X00;
INTCON=0X00;
PIR1=0X00;
// PIR2=0X00;
PIE1=0X00;
// PIE2=0X00;
}
//--------------------------------------- ......
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