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Merge pull request #683 from taedryn/t114-power-consumption

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Improving T114 power consumption
This commit is contained in:
ripplebiz
2025-08-29 17:50:30 +10:00
committed by GitHub
parent 4d6e33b365 19978d6b6e
commit 4785240608
2 changed files with 44 additions and 0 deletions
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39
src/helpers/nrf52/T114Board.cpp
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@@ -26,6 +26,45 @@ void T114Board::begin() {
pinMode(PIN_VBAT_READ, INPUT);
// Enable SoftDevice low-power mode
sd_power_mode_set(NRF_POWER_MODE_LOWPWR);
// Enable DC/DC converter for better efficiency (REG1 stage)
NRF_POWER->DCDCEN = 1;
// Power down unused communication peripherals
// UART1 - Not used on T114
NRF_UARTE1->ENABLE = 0;
// SPIM2/SPIS2 - Not used (SPI is on SPIM0)
NRF_SPIM2->ENABLE = 0;
NRF_SPIS2->ENABLE = 0;
// TWI1 (I2C1) - Not used (I2C is on TWI0)
NRF_TWIM1->ENABLE = 0;
NRF_TWIS1->ENABLE = 0;
// PWM modules - Not used for standard T114 functions
NRF_PWM1->ENABLE = 0;
NRF_PWM2->ENABLE = 0;
NRF_PWM3->ENABLE = 0;
// PDM (Digital Microphone Interface) - Not used
NRF_PDM->ENABLE = 0;
// I2S - Not used
NRF_I2S->ENABLE = 0;
// QSPI - Not used (no external flash)
NRF_QSPI->ENABLE = 0;
// Disable unused analog peripherals
// SAADC channels - only keep what's needed for battery monitoring
NRF_SAADC->ENABLE = 0; // Re-enable only when needed for measurements
// COMP - Comparator not used
NRF_COMP->ENABLE = 0;
#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
Wire.setPins(PIN_BOARD_SDA, PIN_BOARD_SCL);
#endif

5
src/helpers/nrf52/T114Board.h
View File

@@ -40,6 +40,9 @@ public:
uint16_t getBattMilliVolts() override {
int adcvalue = 0;
NRF_SAADC->ENABLE = 1;
analogReadResolution(12);
analogReference(AR_INTERNAL_3_0);
pinMode(PIN_BAT_CTL, OUTPUT); // battery adc can be read only ctrl pin 6 set to high
@@ -49,6 +52,8 @@ public:
adcvalue = analogRead(PIN_VBAT_READ);
digitalWrite(6, 0);
NRF_SAADC->ENABLE = 0;
return (uint16_t)((float)adcvalue * MV_LSB * 4.9);
}