voltage_multiplier.cpp

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#include "voltage_multiplier.h"
 
namespace sensesp {
 
VoltageMultiplier::VoltageMultiplier(uint16_t R1, uint16_t R2,
                                     String config_path)
    : FloatTransform(config_path), R1_{R1}, R2_{R2} {}
 
void VoltageMultiplier::set_input(float input, uint8_t inputChannel) {
  // Ohms Law at work!
  this->emit(input * (((float)R1_ + (float)R2_) / (float)R2_));
}
 
void VoltageMultiplier::get_configuration(JsonObject& root) {
  root["R1"] = R1_;
  root["R2"] = R2_;
};
 
static const char SCHEMA[] PROGMEM = 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" }
    }
  })###";
 
String VoltageMultiplier::get_config_schema() { return FPSTR(SCHEMA); }
 
bool VoltageMultiplier::set_configuration(const JsonObject& config) {
  String expected[] = {"R1", "R2"};
  for (auto str : expected) {
    if (!config.containsKey(str)) {
      return false;
    }
  }
  R1_ = config["R1"];
  R2_ = config["R2"];
  return true;
}
 
}  // namespace sensesp