ADC peripheral

Peripherals/Inc/peripherals_adc.hpp

@@ -0,0 +1,71 @@
+/*
+ * peripherals_adc.hpp
+ *
+ *  Created on: Mar 28, 2021
+ *      Author: erki
+ */
+
+#ifndef PERIPHERALS_INC_PERIPHERALS_ADC_HPP_
+#define PERIPHERALS_INC_PERIPHERALS_ADC_HPP_
+
+#include <cstdint>
+#include <array>
+
+#include <adc.h>
+
+namespace Peripherals
+{
+
+template<std::size_t N>
+struct Adc
+{
+  std::array<std::uint16_t, N> readings = { 0 };
+  ADC_HandleTypeDef* hadc = nullptr;
+
+  static constexpr std::uint32_t readingsCount()
+  {
+    return N;
+  }
+
+  Adc() = delete;
+
+  explicit Adc(ADC_HandleTypeDef* hadc)
+    : hadc(hadc)
+  { }
+
+  Adc(const Adc&) = delete;
+  Adc(Adc&&) = delete;
+  Adc& operator=(const Adc&) = delete;
+  Adc& operator=(Adc&&) = delete;
+
+  std::uint16_t read(const std::uint8_t channel, std::uint32_t sampling_time)
+  {
+    ADC_ChannelConfTypeDef conf;
+
+    conf.Channel = channel;
+    conf.Rank = 1;
+    conf.SamplingTime = sampling_time;
+
+    HAL_ADC_ConfigChannel(hadc, &conf);
+
+    HAL_ADC_Start(hadc);
+    HAL_ADC_PollForConversion(hadc, 100);
+
+    return HAL_ADC_GetValue(hadc);
+  }
+
+  void startDma()
+  {
+    HAL_ADC_Start_DMA(hadc, reinterpret_cast<std::uint32_t*>(readings.data()), readingsCount());
+  }
+
+  void stopDma()
+  {
+    HAL_ADC_Stop_DMA(hadc);
+  }
+};
+
+}
+
+
+#endif /* PERIPHERALS_INC_PERIPHERALS_ADC_HPP_ */