 
 void MF_READ(unsigned char numBlocks, unsigned char startSector) {
 	int i = 0;
-	unsigned A[] = { TX, 0x00, 0x0A, CMD_READ, 0x01, numBlocks, startSector,
+	unsigned char A[] = { STX, 0x00, 0x0A, CMD_READ, 0x01, numBlocks, startSector,
                         0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF };
     unsigned char BCC = checksum(A, sizeof(A)/sizeof(A[0]));
     unsigned char CMD[] = { STX, 0x00, 0x0A, CMD_READ, 0x01, numBlocks, startSector,

}

void loop() {
	bool standby = true;
	bool responseFlag = false;

	
}

unsigned char checksum(unsigned char A[], int numElements) {

			Serial.println();
		else if(i == 23 || i == 39 || i == 55 || i == 71 || i == 87) 
			Serial.println();
		else 
			Serial.print(" ");
		i++;
