richonguzman/LoRa_APRS_iGate
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richonguzman 2023-07-06 01:01:10 -04:00
parent d40057ebbd
commit 8e85da253c
7 changed files with 29 additions and 18 deletions
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10
src/battery_utils.cpp
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@ -1,13 +1,12 @@
#include "battery_utils.h"
#include "pins_config.h"
extern String batteryVoltage;
float adcReadingTransformation = (4095/3.3);
float adcReadingTransformation = (3.3/4095);
float voltageDividerCorrection = 0.288;
namespace BATTERY_Utils {
String checkVoltages() {
float checkVoltages() {
float sample;
int sampleSum = 0;
for (int i=0; i<100; i++) {
@ -15,8 +14,7 @@ String checkVoltages() {
sampleSum += sample;
delayMicroseconds(50);
}
batteryVoltage = 2.1571 *(sampleSum/100) * adcReadingTransformation;
return String(batteryVoltage);
return (2 * (sampleSum/100) * adcReadingTransformation) + voltageDividerCorrection;
}
}