PINSEL0 = 0x03050005; //Ain5
PCONP |= (1 << 12); //pd=1,
ADCR = 0x00200300 | (0x20); /* Init ADC (Pclk = 12MHz) and select channel ,11 clock 10bit*/
ADCR |= 0x01000000; /* Start A/D Conversion*/
do
{
ADValue= ADDR5; /*Read A/D Data Register*/
} while ((ADValue & 0x80000000) == 0); /* Wait for end of A/D Conversion(bit31 :done )*/
return (ADValue>> 6) & 0x03FF; /* bit[15:6] is 10 bit AD value */
返回的数据总是3FF |
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