View difference between Paste ID: w7acA3mv and CDEDeDV9

 /*
 
 
 Test harness for playing with I2C.
 
 
 
 */
 
 #include <I2C.h>
 
 #define SLAVE_ADDR         0x01  // This has to match the address assigned to the slave in its code
 #define MAX_PACKET_SIZE    16    // max bytes to test sending at a time
 #define TEST_TRIES         10    // how many tests to perform for each number of bytes
 #define END_MARKER         255
 
 
 // Holds the outgoing data
 byte data[MAX_PACKET_SIZE];
 
 // function prototypes
 int fillData(int bytes);
 
 
 void setup()
 {
     I2c.begin();
-    I2c.setSpeed(1); // 0 = 100MHz, 1 = 400MHz
+    I2c.setSpeed(1); // 0 = 100KHz, 1 = 400KHz
     Serial.begin(9600);
 }
 
 void loop()
 {
     int total;
     int retries = 10;
     unsigned long start_time, trans_time;
     for(int i=0;i<retries;i++) {
         Serial.println("-----------------");
         Serial.println(retries++);
         Serial.println("-----------------");
         for (int bytes=1;bytes<MAX_PACKET_SIZE-1;bytes++) {
 
             total = fillData(bytes);
             start_time = micros();
             sendData(bytes);
             trans_time = micros() - start_time;
             Serial.print("Total: ");
             Serial.println(total);
             Serial.print("Time: ");
             Serial.println(trans_time);
             delay(7000);
         }
     }
 }
 
 
 int fillData(int bytes)
 { // generate some random bytes.
     int total = 0;
     for (int i=0;i<bytes;i++) {
         data[i] = random(256);
         total += data[i];
     }
     return total;
 }
 
 void sendData(int bytes)
 { // send the bytes. Hacking a 0 as the first byte and forcing the
   // END_MARKER in. No error checking seeing we're interested in speed.
 
    data[bytes] = END_MARKER;
    I2c.write((int)SLAVE_ADDR, 0, data, bytes +1);
    Serial.print("Bytes: ");
    Serial.println(bytes + 2); // Includes the start byte and end marker
 }