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Code snippets
Change clock speed
- define CLOCK_SPEED_16MHZ 0
- define CLOCK_SPEED_8MHZ 1
- define CLOCK_SPEED_4MHZ 2
- define CLOCK_SPEED_2MHZ 3
- define CLOCK_SPEED_1MHZ 4
- define CLOCK_SPEED_500KHZ 5
- define CLOCK_SPEED_250KHZ 6
- define CLOCK_SPEED_125KHZ 7
volatile void setClockSpeed(byte speed)
{
CLKPR = 0b10000000; // enable clock change
CLKPR = speed;
}
void setup()
{
setClockSpeed(CLOCK_SPEED_8MHZ);
}