MirrorSave
/
ESPresense
mirror of https://github.com/ESPresense/ESPresense.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Battery sensor for TTGO

This commit is contained in:
Gunnar Beutner 2023-09-13 09:59:10 +02:00 committed by Gunnar Beutner
parent e4bbb1d11c
commit 5a0ffebfaa
2 changed files with 37 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
platformio.ini
View File

@ -277,3 +277,14 @@ build_flags =
-D FIRMWARE='"macchina-a0"'
-D SENSORS
${esp32.build_flags}
[env:ttgo-tcell]
extends = esp32
lib_deps =
${esp32.lib_deps}
${sensors.lib_deps}
build_flags =
-D TTGO_TCELL
-D FIRMWARE='"ttgo-tcell"'
-D SENSORS
${esp32.build_flags}

33
src/Battery.cpp
View File

@ -8,9 +8,22 @@
namespace Battery {
#ifdef MACCHINA_A0
const int voltageDividerResistor1 = 2200;
const int voltageDividerResistor2 = 10000;
const int chargingVoltage = 13200;
const int deadVoltage = 11883;
#define BATTERY_SENSOR
#elif defined(TTGO_TCELL)
const int voltageDividerResistor1 = 100000;
const int voltageDividerResistor2 = 100000;
const int chargingVoltage = 4150;
const int deadVoltage = 3200;
#define BATTERY_SENSOR
#endif
#ifdef BATTERY_SENSOR
int smoothMilliVolts;
int a0_read_batt_mv() {
int mv = round(((float)analogRead(GPIO_NUM_35) + 35) / 0.215);
int mv = analogReadMilliVolts(GPIO_NUM_35) * (voltageDividerResistor1 + voltageDividerResistor2) / voltageDividerResistor1;
if (smoothMilliVolts)
smoothMilliVolts = round(0.1 * (mv - smoothMilliVolts) + smoothMilliVolts);
else
@ -20,26 +33,32 @@ int a0_read_batt_mv() {
#endif
void Setup() {
#if MACCHINA_A0
#ifdef BATTERY_SENSOR
pinMode(GPIO_NUM_35, INPUT);
#endif
}
bool SendDiscovery() {
#ifdef MACCHINA_A0
return sendTeleSensorDiscovery("Battery", EC_NONE, "{{ value_json.batt }}", "battery", "%") && sendTeleBinarySensorDiscovery("Charging", EC_NONE, "{{ value_json.charging }}", "battery_charging");
#ifdef BATTERY_SENSOR
return sendTeleSensorDiscovery("Battery", EC_NONE, "{{ value_json.batt }}", "battery", "%") &&
sendTeleBinarySensorDiscovery("Charging", EC_NONE, "{{ value_json.charging }}", "battery_charging") &&
sendTeleSensorDiscovery("Battery Voltage", EC_NONE, "{{ value_json.mV }}", "voltage", "mV");
#else
return true;
#endif
}
void SendTelemetry() {
#ifdef MACCHINA_A0
#ifdef BATTERY_SENSOR
auto mv = a0_read_batt_mv();
doc["mV"] = mv;
bool charging = (mv > 13200);
bool dead = (mv < 11883);
bool charging = (mv > chargingVoltage);
bool dead = (mv < deadVoltage);
#ifdef MACCHINA_A0
unsigned int soc = round(-13275.04 + 2.049731 * mv - (0.00007847975 * mv) * mv);
#else
unsigned int soc = round(mv < 3700 ? (-64 + 0.02 * mv) : -4266.02 + 2.021295 * mv - (0.00023382077 * mv) * mv);
#endif
doc["batt"] = dead ? 0 : (charging ? (unsigned int)100 : max((unsigned int)0, min((unsigned int)100, soc)));
doc["charging"] = charging ? "ON" : "OFF";
#endif