adc.h

AT9260处理器Linux2.6.24内核AD转换驱动程序

/* Header for ADC Driver on the AT91SAM9260-EK
 */

/* ADC Register Map. Should not be changed as they define
 * memory locations for the registers
 */
#define ADC_CR          0x00    //Control Register Offset
#define ADC_MR          0x04    //Mode Register Offset
#define ADC_CHER        0x10    //Channel Enable Register Offset
#define ADC_CHDR        0x14    //Channel Disable Register Offset
#define ADC_CHSR        0x18    //Channel Status Register Offset
#define ADC_SR          0x1C    //Status Register Offset
#define ADC_LCDR        0x20    //Last Converted Data Register Offset
#define ADC_IER         0x24    //Interrupt Enable Register Offset
#define ADC_IDR         0x28    //Interrupt Disable Register Offset
#define ADC_IMR         0x2C    //Interrupt Mask Register Offset
#define	ADC_CDR		0x30
#define ADC_CDR0        0x30    //Channel Data Register 0 Offset
#define ADC_CDR1        0x34    //Channel Data Register 1 Offset
#define ADC_CDR2        0x38    //Channel Data Register 2 Offset
#define ADC_CDR3        0x3C    //Channel Data Register 3 Offset

/* Define some of the values we will want in the registers
 * This can be changed to reflect the needs of the driver
 */

#define CH_EN           0x0F    //Channels to Enable
#define CH_DIS          0x00    //Channels to Disable
#define TRGEN           0x00    //Trigger Enable
#define TRGSEL          0x00    //Trigger Select
#define LOWRES          0x01    //Resolution
#define SLEEP_MODE      0x00    //Sleep Mode
#define PRESCAL         0x9   //Prescaler Rate Selection
#define STARTUP         0x7    //Start Up Time
#define SHTIM           0x3    //Sample and Hold Time