求救,nLED的4个led灯是在GPB8~5,还是在GPF8~5,怎么TQ2440_Core原理图上是GPB8~5,
本帖最后由 xjt010 于 2009-12-1 18:00 编辑nLED的4个led灯是在GPB8~5,还是在GPF8~5? 怎么TQ2440_Core原理图.pdf(下图)上是GPB8~5。实际应该是GPF8~5吧。调试之后看到是在GPF上的。难道是我搞错了,拿到arm板不久,高手帮忙解答下。
在光盘上的TQ2440_Test上的程序是
//**************************[ BOARD LED ]********************************
void Led_Display(int data)
{
//Active is low.(LED On)
// GPF7GPF6 GPF5 GPF4
//nLED_8 nLED4 nLED_2 nLED_1
// rGPFDAT = (rGPFDAT & 0xf) | !((data & 0xf)<<4);
// rGPFDAT = (rGPFDAT & ~(0xf<<4)) | ((~data & 0xf)<<4);
//Active is low.(LED On)
// GPF7GPF6 GPF5 GPF4
//nLED_8 nLED4 nLED_2 nLED_1
// rGPFDAT = (rGPFDAT & 0xf) | !((data & 0xf)<<4);
rGPBDAT = (rGPBDAT & ~(0xf<<5)) | ((~data & 0xf)<<5);
//rGPCDAT = (rGPBDAT & ~(0xf<<5)) | ((~data & 0xf0)<<5);
} 太大意了,是我搞错了
rGPBDAT = (rGPBDAT & ~(0xf<<5)) | ((~data & 0xf)<<5);
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