ARDUINO MEGA Functions Miscellaneous

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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

memcmp

intrinsic short memcmp(void &pToBuffer, const shortnValue, const short nNumbOfBytes)

(void) This function will compare

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

char temp1[5] = {'A', 'B', 'C', 'D', 'E'}; //Create an Array short result = 0; //Variable to store result result = memcmp(temp1[0], temp1[2], 2); //Perform the memory compare

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