NXT Functions Miscellaneous

NXT → Functions and Variables → Miscellaneous

Color Key Function: Variable:

memcpy

void memcpy(void &pToBuffer, const void &pFromBuffer, const short nNumbOfBytes)

(void) Function copies characters from pFromBuffer to pToBuffer. nBytesToCopy is the number of bytes to copy. Identical to the function found in conventional C 'string.h' library.

Parameter Explanation Data Type pToBuffer buffer to copy to void pFromBuffer buffer to copy from void nNumbOfBytes number of bytes to copy short

string sTemp = "ROBOTC"; // create a string, 'sTemp' to be "ROBOTC" char sArray[20]; // create a char array, 'sArray' of size 20 memcpy(sArray, sTemp, sizeof(sTemp)); // copy characters from 'sTemp' to 'sArray'

memset

void memset(void &pToBuffer, const short nValue, const short nNumbOfBytes)

(void) Sets a block of memory at pToBuffer to the value nValue. nNumbOfBytes is the number of bytes to set. This is a useful function for initializing the value of an array to all zeros. Identical to the function found in conventional C 'string.h' library.

Parameter Explanation Data Type pToBuffer buffer to set void nValue value to set buffer to short nNumbOfBytes number of bytes to set short

int kSendSize = 1; // we will be sending 1 byte ubyte BytesToSend[kSendSize]; // create a ubyte array of size 1 short nMsgXmit = 0; // we will be setting them to 0 memset(BytesToSend, nMsgXmit, sizeof(BytesToSend)); // set the Byte Array to 0

version

const word version

(word) Contains the firmware version number.

nxtDisplayCenteredBigTextLine(3, "%d", version); // display the current firmware version large on the LCD