98 lines
1.6 KiB
C++
98 lines
1.6 KiB
C++
#ifndef ADC_HPP
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#define ADC_HPP
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#include "config.hpp"
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#include "hardware.hpp"
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#include <stdint.h>
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#include "../io/io.hpp"
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namespace adc {
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namespace detail {
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extern void (*fnAdcIntHandler)(uint16_t);
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class AdcImpl {
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private:
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using callback_t = void (*)(uint16_t);
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public:
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static void init(callback_t callback)
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{
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detail::fnAdcIntHandler = callback;
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}
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static void init() {}
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static uint16_t read()
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{
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return 0;
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}
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};
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} // namespace detail
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template <typename Cfg, typename Input, Input src>
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class Adc {
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public:
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static_assert(sizeof(Input) == -1, "Invalid input source selected");
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};
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template <typename Cfg, io::P pin>
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class Adc<Cfg, io::P, pin> : public detail::AdcImpl {
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public:
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static_assert(detail::supports_adc_v<pin>, "Pin does not support ADC");
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};
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template <typename Cfg, InputSource src>
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class Adc<Cfg, InputSource, src> : public detail::AdcImpl {
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};
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} // namespace adc
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#endif
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//////////////////////////////////////////////////////////////////////////
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#ifdef ADC_INT_VECTOR
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#include <stdint.h>
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#include <avr/interrupt.h>
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namespace adc {
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namespace detail {
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#if defined(__AVR_ATmega1284P__) || defined(__AVR_ATmega328P__)
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void (*fnAdcIntHandler)(uint16_t) = nullptr;
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using reg_ptr_t = volatile uint8_t *;
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template <uintptr_t Address>
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static inline reg_ptr_t getRegPtr()
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{
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return reinterpret_cast<reg_ptr_t>(Address);
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}
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ISR(ADC_vect)
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{
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if (fnAdcIntHandler) {
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const auto adcSample = *getRegPtr<Registers::DATA_L_ADDR>() | (*getRegPtr<Registers::DATA_H_ADDR>() << 8);
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fnAdcIntHandler(adcSample);
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}
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}
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#else
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#error "This chip is not supported"
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#endif
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} // namespace detail
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} // namespace adc
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#undef ADC_INT_VECTORS
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#endif
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