attraccelm.nc

用于传感器网络的节点操作系统 TinyOS 结构设计非常有意思

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/* 
 * Authors:  Wei Hong
 *           Intel Research Berkeley Lab
 * Date:     8/6/2002
 *
 */
// component to expose Accelerometer readings as an attribute
module AttrAccelM
{
	provides interface StdControl;
	uses 
	{
		interface ADC as AccelX;
		interface ADC as AccelY;
		interface StdControl as AccelControl;
		interface AttrRegister as AttrAccelX;
		interface AttrRegister as AttrAccelY;
	}
}
implementation
{
	char *resultX;
	char *attrNameX;
	char *resultY;
	char *attrNameY;

	command result_t StdControl.init()
	{
		if (call AttrAccelX.registerAttr("accel_x", UINT16, 2) != SUCCESS)
			return FAIL;
		if (call AttrAccelY.registerAttr("accel_y", UINT16, 2) != SUCCESS)
			return FAIL;
		return call AccelControl.init();
	}

	command result_t StdControl.start()
	{
		return call AccelControl.start();
	}

	command result_t StdControl.stop()
	{
		return call AccelControl.stop();
	}

	event result_t AttrAccelX.getAttr(char *name, char *resultBuf, SchemaErrorNo *errorNo)
	{
		resultX = resultBuf;
		attrNameX = name;
		if (call AccelX.getData() != SUCCESS)
			return FAIL;
		*errorNo = SCHEMA_RESULT_PENDING;
		return SUCCESS;
	}

	event result_t AttrAccelX.setAttr(char *name, char *attrVal)
	{
		return FAIL;
	}

	event result_t AccelX.dataReady(uint16_t data)
	{
		*(uint16_t*)resultX = data;
		call AttrAccelX.getAttrDone(attrNameX, resultX, SCHEMA_RESULT_READY);
		return SUCCESS;
	}

	event result_t AttrAccelY.getAttr(char *name, char *resultBuf, SchemaErrorNo *errorNo)
	{
		resultY = resultBuf;
		attrNameY = name;
		if (call AccelY.getData() != SUCCESS)
			return FAIL;
		*errorNo = SCHEMA_RESULT_PENDING;
		return SUCCESS;
	}

	event result_t AttrAccelY.setAttr(char *name, char *attrVal)
	{
		return FAIL;
	}

	event result_t AccelY.dataReady(uint16_t data)
	{
		*(uint16_t*)resultY = data;
		call AttrAccelY.getAttrDone(attrNameY, resultY, SCHEMA_RESULT_READY);
		return SUCCESS;
	}
}