Mithat Konar (the wiki)

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Written by Nick Gammon February 2011 With Mithat Mods – July 2023 #include <SPI.h> void setup (void) { digitalWrite(SS, HIGH); ensure SS stays high for now

// Put SCK, MOSI, SS pins into output mode
// also put SCK, MOSI into LOW state, and SS into HIGH state.
// Then put SPI hardware into Master mode and turn SPI on
SPI.begin ();

// Slow down the master a bit

SPI.setClockDivider(SPI_CLOCK_DIV8); mithat: let's go full speed

} end of setup void loop (void) { char c; enable Slave Select

digitalWrite(SS, LOW);    // SS is pin 10

// send test string
for (const char * p = "Hello, world!\n" ; c = *p; p++)
{
  SPI.transfer (c);
  delayMicroseconds(5);    // mithat: added small delay to make things work at full speed
}

// disable Slave Select
digitalWrite(SS, HIGH);

delay (1000);  // 1 seconds delay 

} end of loop </file>