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
parent e3c4bc5473
commit 7c9d1b0abf
8 changed files with 109 additions and 77 deletions
@@ -72,14 +72,13 @@
 #define BATTERY_PIN 34 // A battery voltage measurement pin, voltage divider connected here to measure battery voltage
 #define ADC_CHANNEL ADC1_GPIO34_CHANNEL
 #define ADC_ATTENUATION                                                                                                          \
-    ADC_ATTEN_DB_2_5 // 2_5-> 100mv-1250mv, 11-> 150mv-3100mv for ESP32
-                     // ESP32-S2/C3/S3 are different
-                     // lower dB for lower voltage rnage
-#define ADC_MULTIPLIER                                                                                                           \
-    5.0                   // VBATT---10k--pin34---2.5K---GND
-                          // Chatter2 uses 3 AAA cells
-#define BAT_FULLVOLT 4800 // with the 5.0 divider, input to BATTERY_PIN is 900mv
-#define BAT_EMPTYVOLT 3300
+    ADC_ATTEN_DB_2_5       // 2_5-> 100mv-1250mv, 11-> 150mv-3100mv for ESP32
+                           // ESP32-S2/C3/S3 are different
+                           // lower dB for lower voltage rnage
+#define ADC_MULTIPLIER 5.0 // VBATT---10k--pin34---2.5K---GND
+// Chatter2 uses 3 AAA cells
+#define CELL_TYPE_ALKALINE
+#define NUM_CELLS 3
 #undef EXT_PWR_DETECT

 // GPS