sensor.asm

此程序为usb的驱动程序代码

*
		.mmregs
		.include constant.inc
		.include c54.inc
		
		.def sensor_init
		.ref sensor_map
		.ref io_map
		
				
	    .sect "progsys"
*********************** sensor_init *********************        
sensor_init:

*CTLRB=0x0f 使用12M晶振，=0x0d使用内部振荡器，不用12M晶振
		ST Sensor_CTRLB,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x0d,*(sensor_map)
		PORTW *(sensor_map),Sensor_data	
		RPT #3000
		NOP
		
*CTLRC=0x60
		ST Sensor_CTRLC,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x40,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
		
*ICR=0x00
		ST Sensor_ICR,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x0,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
		
		

*ISR=0x00
		ST Sensor_ISR,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x03,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
		
*THR=0x48
		ST Sensor_THR,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x10,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP		

*DTR=0x0A
		ST Sensor_DTR,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x0b,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
		
*DCR=0x04
		ST Sensor_DCR,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x04,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
		
*PGC=0x0f
		ST Sensor_PGC,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x7,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
		
*ICR=0x41
		ST Sensor_ICR,*(sensor_map)
		PORTW *(sensor_map),Sensor_index
		ST #0x41,*(sensor_map)
		PORTW *(sensor_map),Sensor_data
		RPT #3000
		NOP
				
		RET