scoop.c

来自「RT-Thread是发展中的下一代微内核嵌入式实时操作系统」· C语言 代码 · 共 44 行

/*
 * File      : scoop.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2006, RT-Thread Develop Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://openlab.rt-thread.com/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2006-11-04     Bernard      the first version
 */

#include "scoop.h"

void rt_scoop_init(void)
{
	SCP_MCR  = 0x0140;		/* 00 */
	SCP_MCR  = 0x0100;
	SCP_CDR  = 0x0000;		/* 04 */
	SCP_CPR  = 0x0000;		/* 0C */
	SCP_CCR  = 0x0000;		/* 10 */
	SCP_IMR  = 0x0000;		/* 18 */
	SCP_IRM  = 0x00FF;		/* 14 */
	SCP_ISR  = 0x0000;		/* 1C */
	SCP_IRM  = 0x0000;
	SCP_GPCR = SCP_IO_DIR;	/* 20 */
	SCP_GPWR = SCP_IO_OUT;	/* 24 */
}

rt_uint16 rt_scoop_setgpio(rt_uint16 bit)
{
	rt_uint16 gpio_bit;
	rt_base flag;

	flag = rt_hw_interrupt_disable();
	gpio_bit = SCP_GPWR | bit;
	SCP_GPWR = gpio_bit;
	rt_hw_interrupt_enable(flag);

	return gpio_bit;
}