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added ttgo board en pins

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This commit is contained in:
willem
2021-01-12 16:53:11 +01:00
parent e8724575f0
commit 40a64daf8a
10 changed files with 108 additions and 49 deletions
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83
src/power.cpp
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@@ -5,7 +5,15 @@
#include <driver/adc.h>
#include "display.h"
#define VOLTAGE_DIVIDER 2.08 // Lora has 220k/100k voltage divider so need to reverse that reduction via (220k+100k)/100k on vbat GPIO37 or ADC1_1 (early revs were GPIO13 or ADC2_4 but do NOT use with WiFi.begin())
#if (ENVIRONMENT == TTGO_T18)
#define VOLTAGE_DIVIDER 2 // ttgo has 100/100k voltage divider so need to reverse that reduction via (220k+100k)/100k on vbat GPIO37 or ADC1_1 (early revs were GPIO13 or ADC2_4 but do NOT use with WiFi.begin())
#define VOLTAGEREF 3787 // measured 2,0474 / 2214 ticks (mv)
#else
#define VOLTAGE_DIVIDER 2.08 // Lora has 220k/100k voltage divider so need to reverse that reduction via (220k+100k)/100k on vbat GPIO37 or ADC1_1 (early revs were GPIO13 or ADC2_4 but do NOT use with WiFi.begin())
#endif
#define DEFAULT_VREF 1100 // Default VREF use if no e-fuse calibration
#define VBATT_SAMPLE 500 // Battery sample rate in ms
#define VBATT_SMOOTH 20 // Number of averages in sample
@@ -15,7 +23,6 @@
uint16_t Sample();
esp_adc_cal_characteristics_t *adc_chars;
uint16_t voltage = 666;
@@ -27,6 +34,11 @@ void powerInit(void)
esp_adc_cal_value_t val_type = esp_adc_cal_characterize(ADC_UNIT_1, ADC_ATTEN_DB_6, ADC_WIDTH_BIT_12, DEFAULT_VREF, adc_chars);
adc1_config_width(ADC_WIDTH_BIT_12);
adc1_config_channel_atten(VBATT, ADC_ATTEN_DB_6);
#elif (ENVIRONMENT == TTGO_T18)
//nothing
adc_chars = (esp_adc_cal_characteristics_t *)calloc(1, sizeof(esp_adc_cal_characteristics_t));
esp_adc_cal_value_t val_type = esp_adc_cal_characterize(ADC_UNIT_1, ADC_ATTEN_DB_6, ADC_WIDTH_BIT_12, DEFAULT_VREF, adc_chars);
adc1_config_channel_atten(VBATT, ADC_ATTEN_DB_6);
#else
// Use this for older V2.0 with VBatt reading wired to GPIO13
adc_chars = (esp_adc_cal_characteristics_t *)calloc(1, sizeof(esp_adc_cal_characteristics_t));
@@ -64,7 +76,6 @@ void powerInit(void)
Serial.println("Power init done");
}
uint16_t powerGetVbatt(void)
{
return voltage;
@@ -75,31 +86,30 @@ void powerHandler(void)
voltage = Sample();
//displayDrawBatt(voltage, voltage < LIGHT_SLEEP_VOLTAGE);
if (voltage < MINBATT)
{ // Low Voltage cut off shut down to protect battery as long as possible
displayDrawShutdown();
delay(2000);
#if defined(__DEBUG) && __DEBUG > 0
Serial.printf(" !! Shutting down...low battery volotage: %dmV.\n", voltage);
delay(10);
#endif
esp_sleep_enable_timer_wakeup(LO_BATT_SLEEP_TIME);
esp_deep_sleep_start();
}
else if (voltage < LIGHT_SLEEP_VOLTAGE)
{ // Use light sleep once on battery
uint64_t s = VBATT_SAMPLE;
#if defined(__DEBUG) && __DEBUG > 0
Serial.printf(" - Light Sleep (%dms)...battery volotage: %dmV.\n", (int)s, voltage);
delay(20);
#endif
esp_sleep_enable_timer_wakeup(s * 1000); // Light Sleep does not flush buffer
esp_light_sleep_start();
}
// if (voltage < MINBATT)
// { // Low Voltage cut off shut down to protect battery as long as possible
// displayDrawShutdown();
// delay(2000);
// #if defined(__DEBUG) && __DEBUG > 0
// Serial.printf(" !! Shutting down...low battery volotage: %dmV.\n", voltage);
// delay(10);
// #endif
// esp_sleep_enable_timer_wakeup(LO_BATT_SLEEP_TIME);
// esp_deep_sleep_start();
// }
// else if (voltage < LIGHT_SLEEP_VOLTAGE)
// { // Use light sleep once on battery
// uint64_t s = VBATT_SAMPLE;
// #if defined(__DEBUG) && __DEBUG > 0
// Serial.printf(" - Light Sleep (%dms)...battery volotage: %dmV.\n", (int)s, voltage);
// delay(20);
// #endif
// esp_sleep_enable_timer_wakeup(s * 1000); // Light Sleep does not flush buffer
// esp_light_sleep_start();
// }
delay(ADC_READ_STABILIZE);
}
// Heltec WiFi LoRa V2 battery read example
// by Jeff McClain jeff@themcclains.net
//
@@ -107,27 +117,40 @@ void powerHandler(void)
// Poll the proper ADC for VBatt on Heltec Lora 32 with GPIO21 toggled
uint16_t ReadVBatt()
{
Serial.println("start read batt");
int reading = 666;
uint16_t rawVoltage;
#if (defined(HELTEC_V2_1))
digitalWrite(VEXT, LOW); // ESP32 Lora v2.1 reads on GPIO37 when GPIO21 is low
delay(ADC_READ_STABILIZE); // let GPIO stabilize
#if (defined(HELTEC_V2_1))
pinMode(VBATT, OPEN_DRAIN); // ADC GPIO37
reading = adc1_get_raw(VBATT);
pinMode(VBATT, INPUT); // Disconnect ADC before GPIO goes back high so we protect ADC from direct connect to VBATT (i.e. no divider)
#else
uint16_t rawVoltage = esp_adc_cal_raw_to_voltage(reading, adc_chars);
#elif (ENVIRONMENT == TTGO_T18)
pinMode(VBATT, ANALOG); // ADC GPIO13
reading = analogRead(35);
Serial.printf("battery analogread = %i\n", reading);
rawVoltage = float(VOLTAGEREF / 4096) * reading;
Serial.printf("raw voltage = %i\n", rawVoltage);
//pinMode(VBATT, INPUT); // Disconnect ADC before GPIO goes back high so we protect ADC from direct connect to VBATT (i.e. no divider
#elif (ENVIRONMENT == LOLIN32)
digitalWrite(VEXT, LOW); // ESP32 Lora v2.1 reads on GPIO37 when GPIO21 is low
delay(ADC_READ_STABILIZE); // let GPIO stabilize
pinMode(VBATT, OPEN_DRAIN); // ADC GPIO13
adc2_get_raw(VBATT, ADC_WIDTH_BIT_12, &reading);
pinMode(VBATT, INPUT); // Disconnect ADC before GPIO goes back high so we protect ADC from direct connect to VBATT (i.e. no divider
rawVoltage = esp_adc_cal_raw_to_voltage(reading, adc_chars);
#endif
uint16_t rawVoltage = esp_adc_cal_raw_to_voltage(reading, adc_chars);
//Serial.printf("battery rawvoltage = %i\n", rawVoltage);
rawVoltage *= VOLTAGE_DIVIDER;
//Serial.printf("battery sample = %i\n", rawVoltage);
Serial.printf("battery sample = %i\n", rawVoltage);
//digitalWrite(VEXT, HIGH); // ESP32 Lora v2.1 reads on GPIO37 when GPIO21 is low
return rawVoltage;
}
// Use a buffer to average/sample ADC