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VBAT schematic

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This commit is contained in:
João Brázio 2025-06-16 19:51:53 +01:00
parent f3e85a6fba
commit 110bd49407
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2 changed files with 16 additions and 5 deletions
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3
src/helpers/rp2040/WaveshareBoard.cpp
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@ -16,7 +16,8 @@ void WaveshareBoard::begin() {
#endif
#if defined(PIN_BOARD_SDA) && defined(PIN_BOARD_SCL)
Wire.setPins(PIN_BOARD_SDA, PIN_BOARD_SCL);
Wire.setSDA(PIN_BOARD_SDA);
Wire.setSCL(PIN_BOARD_SCL);
#endif
Wire.begin();

18
src/helpers/rp2040/WaveshareBoard.h
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@ -18,10 +18,20 @@
#define SX126X_DIO2_AS_RF_SWITCH true
#define SX126X_DIO3_TCXO_VOLTAGE 0
// This board has no built-in way to read battery voltage
// #define PIN_VBAT_READ 26
// #define BATTERY_SAMPLES 8
// #define ADC_MULTIPLIER (3.1 * 3.3 * 1000) // MT Uses 3.1
/*
* This board has no built-in way to read battery voltage.
* Nevertheless it's very easy to make it work, you only require two 1% resistors.
*
* VSYS -- /\/\/\/\-- --+
* 200k |
* +-- GPIO28
* |
* GND -- /\/\/\/\-- --+
* 100k
*/
#define PIN_VBAT_READ 28
#define BATTERY_SAMPLES 8
#define ADC_MULTIPLIER (3.0f * 3.3f * 1000)
class WaveshareBoard : public mesh::MainBoard {
protected: