NSInteger to Word number conversion

Easy conversion between NSInteger and Word.
You need:
- http://objective-c-functions.blogspot.com/2013/08/int-to-hex-number-conversion.html
- http://objective-c-functions.blogspot.com/2013/08/hex-to-int-number-conversion.html


/** Convert an int to a Word defined by a low byte and a high byte.

 @param intVal Integer value.
 @return Returns an array in which first item is the low byte and second item is the high byte.
 @see intFromWordWithLowByte:highByte:

 */
+ (NSArray *)highLowBytesFromInteger:(NSInteger)intVal {

    NSString *hexVal = [[LMFunctions hexFromInt:intVal] substringFromIndex:2]; // Remove "0x".
    NSMutableString *prefix = [[NSMutableString alloc] initWithString:@""];

    NSInteger length = hexVal.length;
    if (length < 4) {
        for (NSInteger i=0; i<4-length; i++) {
            [prefix appendString:@"0"];
        }
    }

    hexVal = [NSString stringWithFormat:@"%@%@", prefix, hexVal];

    NSString *hexValHigh    = [hexVal substringToIndex:2];
    NSString *hexValLow        = [hexVal substringFromIndex:(hexVal.length - 2)];

    Byte bH = [LMFunctions intFromHex:hexValHigh];
    Byte bL = [LMFunctions intFromHex:hexValLow];

    return [NSArray arrayWithObjects:[NSNumber numberWithInteger:bH], [NSNumber numberWithInteger:bL], nil];
}


Download the ready-for-use source file (.m) of NSInteger to Word number conversion

Word to NSInteger number conversion

Intermediate function that converts a Word into a NSInteger.
You need:
- http://objective-c-functions.blogspot.com/2013/08/hex-to-int-number-conversion.html

/** Convert a Word to an int.

 @param lowByte The low byte of the word.
 @param highByte The high byte of the word.
 @return Returns the integer value of the word.
 @see highLowBytesFromInteger:

 */
+ (NSInteger)intFromWordWithLowByte:(Byte)lowByte highByte:(Byte)highByte {

    NSString *startHexAddressHigh    = [NSString stringWithFormat:@"0x%X", highByte];
    NSString *startHexAddressLow    = [NSString stringWithFormat:@"0x%X", lowByte];

    NSInteger res = [LMFunctions intFromHex:startHexAddressHigh] * 16 * 16;
    res += [LMFunctions intFromHex:startHexAddressLow];

    return res;
}


Download the ready-for-use source file (.m) of Word to NSInteger number conversion