25 lines
744 B
C
25 lines
744 B
C
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#ifndef GENERATOR_H
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#define GENERATOR_H
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#include "oneway.h"
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/* Něco jako DDS, přesná frekvence není řešena (závisí na TIM1). */
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class Generator : public OneWay {
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const unsigned freq;
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unsigned base, incr;
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volatile unsigned ms_count;
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public:
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explicit Generator (const unsigned f) noexcept : OneWay(),
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freq (f), base(0u), incr (0u), ms_count (0u) { }
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unsigned Send (uint16_t * const ptr, const unsigned len) override;
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void delay (const unsigned ms) {
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ms_count = ms;
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while (ms_count);// asm volatile ("wfi"); // ???
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}
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void on () volatile { incr = freq; }
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void off () volatile { base = 0u; incr = 0u; }
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protected:
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uint16_t step ();
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};
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#endif // GENERATOR_H
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