在做time0计数器实验的时候设置占空比为50%,在中断函数中用count计数pwm的波形数！

这样配置后count一直没改变！/proc/interrupter文件中的中断计数也没变！

# cat /proc/interrupts
CPU0
17: 7 jianpan
18: 0 jianpan
19: 0 jianpan
25: 0 s3c2410-wdt
26: 0 time
30: 23948 S3C2410 Timer Tick
42: 0 ohci_hcd:usb1
53: 107 eth0
70: 233 s3c2410-uart
71: 341 s3c2410-uart

配置代码：

if(request_irq(IRQ_TIMER0,&timecount,SA_INTERRUPT,"time",NULL))
return -1;

local_irq_save(mask);

TCNTB0= (unsigned long)ioremap((unsigned long)0x5100000C,4);
*(volatile unsigned long *)TCNTB0= 329;

TCMPB0= (unsigned long)ioremap((unsigned long)0x51000010,4);
*(volatile unsigned long *)TCMPB0= 164;

TCFG0=(unsigned long)ioremap((unsigned long)0x51000000,4);
*(volatile unsigned long *)TCFG0&=0xffffff00;
*(volatile unsigned long *)TCFG0 |=1;

TCFG1=(unsigned long)ioremap((unsigned long)0x51000004,4);
*(volatile unsigned long *)TCFG1&=0xfffffff0;

TCON=(unsigned long)ioremap((unsigned long)0x51000008,4);
*(volatile unsigned long *)TCON&=0x7fffe0;
*(volatile unsigned long *)TCON |=0x09;


local_irq_restore(mask);

从你贴出的代码来看，感觉没什么大问题。你把TCON改成下面看看，加了第三行。

TCON=(unsigned long)ioremap((unsigned long)0x51000008,4); 
*(volatile unsigned long *)TCON&=0x7fffe0; 
*(volatile unsigned long *)TCON |=0x0a;
*(volatile unsigned long *)TCON |=0x09;

最好接示波器看看有没有波形出来，看看是pwm还是中断的问题。你要不急的话把代码发给我我调调看，呵呵。

周一我调调看吧