sysuart.c

来自「一个操作系统源代码 用于嵌入式设备 在Vc++环境下仿真 成功移植到多款处理器上」· C语言 代码 · 共 53 行

#include <kernel\ros33\ros33.h>
#include <sys\systsk.h>
#include <sys\devmng.h>
#include <sys\sysuart.h>
#include <sys\sysusr.h>

void OpenUart( WORD uartId )
{
	MSG	 msg;
	ID tskId;

	get_tid( &tskId );
	msg.message = SM_OPEN;
	msg.wparam = (WORD) uartId;	//device id
	msg.lparam = (DWORD)tskId;	//task id
	msg.data = NULL;

	SysSendMessage(UARTSERVER_ID, &msg);
	set_flg( UART_EVENT, TASKMSG_FLG );

	return;
}

void CloseUart(WORD uartId)
{
	MSG	 msg;
	ID tskId;

	get_tid( &tskId );;
	msg.message = SM_CLOSE;
	msg.wparam = (WORD) uartId;	//device id
	msg.lparam = (DWORD)tskId;	//task id
	

	SysSendMessage(UARTSERVER_ID, &msg);
	set_flg( UART_EVENT, TASKMSG_FLG );

	return;
}


void WriteUart(WORD devId, UCHAR *psrc, WORD bytes)
{
	SysWriteDev( devId, psrc, bytes, 0 );
	return;
}

WORD ReadUart(WORD devId, UCHAR *pdest, WORD bytes)
{
	return SysReadDev( devId, pdest, bytes, 0 );
}