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// Copyright (c) 2023 Oleg Kalachev <okalachev@gmail.com>
// Repository: https://github.com/okalachev/flix
// Utility functions
#pragma once
#include <math.h>
#include <soc/soc.h>
#include <soc/rtc_cntl_reg.h>
const float ONE_G = 9.80665;
float mapf(long x, long in_min, long in_max, float out_min, float out_max) {
return (float)(x - in_min) * (out_max - out_min) / (float)(in_max - in_min) + out_min;
}
float mapff(float x, float in_min, float in_max, float out_min, float out_max) {
return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
}
bool invalid(float x) {
return !isfinite(x);
}
bool valid(float x) {
return isfinite(x);
}
// Wrap angle to [-PI, PI)
float wrapAngle(float angle) {
angle = fmodf(angle, 2 * PI);
if (angle > PI) {
angle -= 2 * PI;
} else if (angle < -PI) {
angle += 2 * PI;
}
return angle;
}
// Disable reset on low voltage
void disableBrownOut() {
REG_CLR_BIT(RTC_CNTL_BROWN_OUT_REG, RTC_CNTL_BROWN_OUT_ENA);
}
// Trim and split string by spaces
void splitString(String& str, String& token0, String& token1, String& token2) {
str.trim();
char chars[str.length() + 1];
str.toCharArray(chars, str.length() + 1);
token0 = strtok(chars, " ");
token1 = strtok(NULL, " "); // String(NULL) creates empty string
token2 = strtok(NULL, "");
}