adv7183_reset.c

来自「This directory contains a code example t」· C语言 代码 · 共 30 行

#include "main.h"

/********************************************************************************/
/***** Reset_ADV7183()														*****/
/***** Resets the Video decoder through PF2									*****/
/********************************************************************************/


// specific defines for this module. Not used anywhere else
#define ADV7183_OE_bit 2   				// ADV7183 /OE = PF2
#define ADV7183_Lock   0x0000ffff    	// For startup locktime delay



void Reset_ADV7183(void )
{ long delay_time;

	// configure PF2 as output
	*pFIO0_DIR |= (1 << ADV7183_OE_bit);
	ssync();
	*pFIO0_FLAG_C |= (1 << ADV7183_OE_bit);	// clear bit to enable ADV7183 outputs
	ssync();

	for (delay_time = 0; delay_time < ADV7183_Lock; delay_time++)
			asm("nop;");
	
}