Arduino / Digispark

Bootloader updaten

https://frottier.wordpress.com/2017/11/12/kein-frust-mit-digispark-clones/

Code snippets

Change clock speed

1. define CLOCK_SPEED_16MHZ 0
   
2. define CLOCK_SPEED_8MHZ 1
   
3. define CLOCK_SPEED_4MHZ 2
   
4. define CLOCK_SPEED_2MHZ 3
   
5. define CLOCK_SPEED_1MHZ 4
   
6. define CLOCK_SPEED_500KHZ 5
   
7. define CLOCK_SPEED_250KHZ 6
   
8. define CLOCK_SPEED_125KHZ 7
   

volatile void setClockSpeed(byte speed)
{
  CLKPR = 0b10000000; // enable clock change
  CLKPR = speed;
}

void setup()
{
  setClockSpeed(CLOCK_SPEED_8MHZ);
}