Below function will do the string to HEX value conversion.
EFI_STATUS
StrtoHex (
CHAR16 *String,
UINT64 *HexValue
)
{
UINT64 Value = 0;
//Checking for ASCII value between '0' and 'F'
while (TRUE) {
if(*String >= '0' && *String <= '9') {
Value *= HEX_TEN;
Value += *String - '0';
}
else if(*String >= 'a' && *String <= 'f') {
Value *= HEX_TEN;
Value += (*String - 'a') + 10; // Convert to hex a-f
}
else if(*String >= 'A' && *String <= 'F') {
Value *= HEX_TEN;
Value += (*String - 'A') + 10; // Convert to hex a-f
}
else {
break;
}
String++;
}
if (*String == '\0') {
*HexValue = Value;
return EFI_SUCCESS;
}
return EFI_INVALID_PARAMETER;
}
Thanks,
Ramesh
From: Carsey, Jaben [mailto:[email protected]]
Sent: Tuesday, September 09, 2014 12:34 AM
To: [email protected]
Subject: Re: [edk2] Get number from keyboard
There are some functions for converting strings to the number values they
represent. Look in shelllib.
-Jaben
From: Nguyễn Văn Hiễn [mailto:[email protected]]
Sent: Sunday, September 07, 2014 7:57 PM
To: [email protected]<mailto:[email protected]>
Subject: [edk2] Get number from keyboard
Hi all,
I'm writing an application running on Shell. It reads user's input (number)
from keyboard to do somethings. But when I enter number 1, it gets the number
49 (ASCII).
How can I get the input exactly?
ShellAppMain (
IN UINTN Argc,
IN UINT64 **Argv
)
{
AtaDataTest.StartBlock = *Argv[1];
DBG ("StartBlock: %d\n", AtaDataTest.StartBlock);
}
Thanks for any help,
Hien
=================
HCMUT
[email protected]<mailto:[email protected]>
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