fromasc.c

单片机C源程序souce

/**************************************
File          :  FROMASC.C
Project       :  BDTRV20_MCU_V07
Description   :  将ASCII转换成二进制
Created       :  2006.11.7
Last updata   :  
Author        :  Sunzehui   [e-mail]
Compile Tool  :  Keil uVision2
Target Device :  SST89V564RD
Circuit Board :  BD7700
************************************
Modification History
************************************
 Version      : v2.0
 Date         : MM/DD/YYYY
 Modifier     :
 Description  :

 **********************************
 -- Copyright (c)
*************************************/

extern unsigned char fromasc(unsigned char m)
	{
	if (m>='0'&&m<='9')
		return (m-0x30);
	else if(m>='a'&&m<='z')
		return(m-0x57);
	else if(m>='A'&&m<='Z')
		return(m-0x37);
	}