voltage_multiplier.cpp

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#include "voltage_multiplier.h"
 
namespace sensesp {
 
VoltageMultiplier::VoltageMultiplier(uint16_t R1, uint16_t R2,
                                     const String& config_path)
    : FloatTransform(config_path), R1_{R1}, R2_{R2} {}
 
void VoltageMultiplier::set(const float& input) {
  // Ohms Law at work!
  this->emit(input * (((float)R1_ + (float)R2_) / (float)R2_));
}
 
bool VoltageMultiplier::to_json(JsonObject& root) {
  root["R1"] = R1_;
  root["R2"] = R2_;
  return true;
};
 
bool VoltageMultiplier::from_json(const JsonObject& config) {
  String const expected[] = {"R1", "R2"};
  for (auto str : expected) {
    if (!config[str].is<JsonVariant>()) {
      return false;
    }
  }
  R1_ = config["R1"];
  R2_ = config["R2"];
  return true;
}
 
const String ConfigSchema(const VoltageMultiplier& obj) {
  return R"({"type":"object","properties":{"R1":{"title":"R1","type":"number","description":"The measured value of resistor R1"},"R2":{"title":"R2","type":"number","description":"The measured value of resistor R2"}}})";
}
 
}  // namespace sensesp