Files
firmware/src/power.h
Gabriele Russo 7c9d1b0abf Battery level with proportional filter and lookup table (#3216)
* Add battery level with lookup table

now uses a lookup table to better calculate battery level of different cells

* LifePo4 and PB battery table - added voltage filter

removed delay from adc reading, added a software filter to smooth out voltage readings. In those applications battery would last hours to days, no sudden change should be expected so a less frequent voltage reading or a more aggressive filtering could be done.
Note: to speed up convergence i initiliazied the last value to the minimum voltage, there are other and better ways to init the filter.

Added LiFePO4 and PB  open circuit volta battery tables,

* Fixed ADC_CTRL , Checks for valid ADC readings

line 230/386 For heltec v3 and heltec tracker a different approach was used with the ADC_CTRL pin, now is more uniform using the same code for the 3 boards.

line 236 Check if the raw reading we are getting is Valid or not, count only the valid readings. This could lead to a division by 0 (improbable) so that's why at line 258 there is a check for that.

* updated OCV values

updated value to not OCV but to very low current, almost the same anyway

* Added Alkaline/Nimh voltage curve

Added Alkaline/Nimh voltage curve for AA/AAA and similar cells

* updates variants for new capacity measurement

* trunk reformatting

* trunk fmt

* Add LTO chemistry

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
Co-authored-by: code8buster <20384924+code8buster@users.noreply.github.com>
2024-02-16 06:09:57 -06:00

86 lines
2.7 KiB
C++

#pragma once
#include "PowerStatus.h"
#include "concurrency/OSThread.h"
#ifdef ARCH_ESP32
#include <esp_adc_cal.h>
#include <soc/adc_channel.h>
#endif
#ifndef NUM_OCV_POINTS
#define NUM_OCV_POINTS 11
#endif
// 3400,3350,3320,3290,3270,3260,3250,3230,3200,3120,3000 //3.4 to 3.0 LiFePO4
// 2120,2090,2070,2050,2030,2010,1990,1980,1970,1960,1950 //2.12 to 1.95 Lead Acid
// 4200,4050,3990,3890,3790,3700,3650,3550,3450,3300,3200 //4.2 to 3.2 LiIon/LiPo
// 4200,4050,3990,3890,3790,3700,3650,3550,3400,3300,3000 //4.2 to 3.0 LiIon/LiPo
// 4150,4050,3990,3890,3790,3690,3620,3520,3420,3300,3100 //4.15 to 3.1 LiIon/LiPo
// 2770,2650,2540,2420,2300,2180,2060,1940,1800,1680,1550 //2.8 to 1.5 Lithium Titanate
#ifndef OCV_ARRAY
#ifdef CELL_TYPE_LIFEPO4
#define OCV_ARRAY 3400, 3350, 3320, 3290, 3270, 3260, 3250, 3230, 3200, 3120, 3000
#elif defined(CELL_TYPE_LEADACID)
#define OCV_ARRAY 2120, 2090, 2070, 2050, 2030, 2010, 1990, 1980, 1970, 1960, 1950
#elif defined(CELL_TYPE_ALKALINE)
#define OCV_ARRAY 1580, 1400, 1350, 1300, 1280, 1250, 1230, 1190, 1150, 1100, 1000
#elif defined(CELL_TYPE_NIMH)
#define OCV_ARRAY 1400, 1300, 1280, 1270, 1260, 1250, 1240, 1230, 1210, 1150, 1000
#elif defined(CELL_TYPE_LTO)
#define OCV_ARRAY 2770, 2650, 2540, 2420, 2300, 2180, 2060, 1940, 1800, 1680, 1550
#else // LiIon
#define OCV_ARRAY 4190, 4050, 3990, 3890, 3800, 3720, 3630, 3530, 3420, 3300, 3100
#endif
#endif
/*Note: 12V lead acid is 6 cells, most board accept only 1 cell LiIon/LiPo*/
#ifndef NUM_CELLS
#define NUM_CELLS 1
#endif
#ifdef BAT_MEASURE_ADC_UNIT
extern RTC_NOINIT_ATTR uint64_t RTC_reg_b;
#include "soc/sens_reg.h" // needed for adc pin reset
#endif
#if HAS_TELEMETRY && !defined(ARCH_PORTDUINO)
#include "modules/Telemetry/Sensor/INA219Sensor.h"
#include "modules/Telemetry/Sensor/INA260Sensor.h"
#include "modules/Telemetry/Sensor/INA3221Sensor.h"
extern INA260Sensor ina260Sensor;
extern INA219Sensor ina219Sensor;
extern INA3221Sensor ina3221Sensor;
#endif
class Power : private concurrency::OSThread
{
public:
Observable<const meshtastic::PowerStatus *> newStatus;
Power();
void shutdown();
void readPowerStatus();
virtual bool setup();
virtual int32_t runOnce() override;
void setStatusHandler(meshtastic::PowerStatus *handler) { statusHandler = handler; }
const uint16_t OCV[11] = {OCV_ARRAY};
protected:
meshtastic::PowerStatus *statusHandler;
/// Setup a xpowers chip axp192/axp2101, return true if found
bool axpChipInit();
/// Setup a simple ADC input based battery sensor
bool analogInit();
private:
// open circuit voltage lookup table
uint8_t low_voltage_counter;
#ifdef DEBUG_HEAP
uint32_t lastheap;
#endif
};
extern Power *power;