![]() ![]() Tout= (Prescaler x Preload)/Clock Frequency I've been rehashing some existing libraries I found on some obscure forums to measure a frequency on digital pin 5, using the ATmega328P/ATmega2560 Timer/Counter modules and an interrupt based approach in order to be able to measure frequencies up to 4MHz(-ish). By using this formual, we can caculate any required delay: The correct choice is to use a Hardware Timer with Interrupt to call your function. ![]() PLL_frequency = (input_frequency / PLL_division) * PLL_multiplication On the STM32F031K6 our values will be: 48MHz = (8MHz / 2) * 12 And on the STM32L031K6 it will be: 32MHz = (16MHz / 2) * 4 Initializing and Enabling the PLL Suppose the hardware timer interrupts occur at exactly 10 ms intervals. For details on clock sources and prescaler, see “Timer/Counter0 and Timer/Counter1 Prescalers” on page 84. The interrupt-time count begins at zero when the system starts and is Fixed frequency IRQ: No IRQ on terminal count: No TSC. molle toyota service coupons lesson horses for sale in texas crexi michigan tantra mantra. c bool setFrequency(float frequency, timerCallback callback) // frequency. ![]() Setting the frequency of a timer interrupt. ![]()
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