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