You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.1 KiB
C++
83 lines
2.1 KiB
C++
/**
|
|
* @file adc.hpp
|
|
* @brief Manages signal reading through the ADC.
|
|
*
|
|
* Copyright (C) 2023 Clyne Sullivan
|
|
*
|
|
* Distributed under the GNU GPL v3 or later. You should have received a copy of
|
|
* the GNU General Public License along with this program.
|
|
* If not, see <https://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef STMDSP_ADC_HPP_
|
|
#define STMDSP_ADC_HPP_
|
|
|
|
#include "hal.h"
|
|
#include "sclock.hpp"
|
|
|
|
#include <array>
|
|
|
|
class ADC
|
|
{
|
|
public:
|
|
using Operation = void (*)(adcsample_t *buffer, size_t count);
|
|
|
|
/**
|
|
* Initializes analog input pins and the microcontoller's ADC peripheral.
|
|
*/
|
|
static void begin();
|
|
|
|
/**
|
|
* Begins continuous ADC sampling triggered by SClock at the set sampling
|
|
* rate.
|
|
* @param buffer Pointer to buffer for sample data.
|
|
* @param count Number of samples that the buffer can hold.
|
|
* @param operation Handler function to operate on filled half-buffers.
|
|
*/
|
|
static void start(adcsample_t *buffer, size_t count, Operation operation);
|
|
|
|
/**
|
|
* Stops the continuous ADC sampling.
|
|
*/
|
|
static void stop();
|
|
|
|
/**
|
|
* Runs a single conversion on the "alt" inputs (parameter knobs).
|
|
* @param id The ID of the desired "alt" input (zero or one).
|
|
* @return The sampled value for the given input.
|
|
*/
|
|
static adcsample_t readAlt(unsigned int id);
|
|
|
|
/**
|
|
* Sets the desired sampling rate for the ADC to operate at.
|
|
*/
|
|
static void setRate(SClock::Rate rate);
|
|
|
|
/**
|
|
* Used to override the handler function for the currently running
|
|
* conversion.
|
|
*/
|
|
static void setOperation(Operation operation);
|
|
|
|
private:
|
|
// ADC driver for signal input.
|
|
static ADCDriver *m_driver;
|
|
// ADC driver for "alt" inputs.
|
|
static ADCDriver *m_driver2;
|
|
|
|
static const ADCConfig m_config;
|
|
static const ADCConfig m_config2;
|
|
static ADCConversionGroup m_group_config;
|
|
static ADCConversionGroup m_group_config2;
|
|
|
|
static adcsample_t *m_current_buffer;
|
|
static size_t m_current_buffer_size;
|
|
static Operation m_operation;
|
|
|
|
public:
|
|
static void conversionCallback(ADCDriver *);
|
|
};
|
|
|
|
#endif // STMDSP_ADC_HPP_
|
|
|