2440 PWM

kadina2050

2440 PWM [复制链接]

s3c2440 PWM
按照手册上设置5个定时器后，观察寄存器输出（TCNTOn）值
TCNTO0，TCNTO1，TCNTO2，TCNTO3，TCNTO4：
8633,5181,24113,550,11317
28193,1665,23381,623,8387
27769,4275,22674,800,5561
27346,884,21968,977,2735
26937,3620,21288,258,14
26545,480,20634,645,29148
26121,3090,19927,822,26322
25682,5575,19195,895,23392
25242,2059,18462,968,20462
24802,4543,17729,39,17531
24379,1153,17023,217,14706
23939,3637,16290,290,11776
23500,121,15558,362,8845
23091,2857,14878,644,6124
22668,5467,14171,822,3299
22244,2076,13465,999,473
21836,4812,12785,280,29502
21396,1296,12052,353,26572
20956,3780,11319,425,23641
20517,264,10587,498,20711
……
可以看出寄存器已经设置正确了，定时器正常工作
可是为什么用示波器观察TOUTn都输出为0呢？
还有什么是决定PWM输出的呢？
好疑惑啊

han001

解决了，IO口未设置对

xsslf

呵呵~，接分