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xiao-ble: add initial support for the Xiao BLE + Ebyte E22-900M30S (#2633)

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Co-authored-by: Ben Meadors <benmmeadors@gmail.com>
This commit is contained in:
andrew-moroz
2023-07-21 21:37:00 -04:00
committed by GitHub
parent 084ad1b722
commit 1c74479555
11 changed files with 639 additions and 3 deletions
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13
src/main.cpp
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@@ -250,6 +250,19 @@ void setup()
fsInit();
#if defined(_SEEED_XIAO_NRF52840_SENSE_H_)
pinMode(CHARGE_LED, INPUT); // sets to detect if charge LED is on or off to see if USB is plugged in
pinMode(HICHG, OUTPUT);
digitalWrite(HICHG, LOW); // 100 mA charging current if set to LOW and 50mA (actually about 20mA) if set to HIGH
pinMode(BAT_READ, OUTPUT);
digitalWrite(BAT_READ, LOW); // This is pin P0_14 = 14 and by pullling low to GND it provices path to read on pin 32 (P0,31)
// PIN_VBAT the voltage from divider on XIAO board
#endif
#ifdef I2C_SDA1
Wire1.begin(I2C_SDA1, I2C_SCL1);
#endif

19
src/mesh/SX126xInterface.cpp
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@@ -70,12 +70,25 @@ template <typename T> bool SX126xInterface<T>::init()
#endif
#if defined(SX126X_TXEN) && (SX126X_TXEN != RADIOLIB_NC)
// lora.begin sets Dio2 as RF switch control, which is not true if we are manually controlling RX and TX
// If SX126X_TXEN is connected to the MCU, we are manually controlling RX and TX.
// But lora.begin (called above) sets Dio2 as RF switch control, which is not true here, so set it back to false.
if (res == RADIOLIB_ERR_NONE) {
LOG_DEBUG("SX126X_TX/RX EN pins defined. Setting RF Switch: RXEN=%i, TXEN=%i\n", SX126X_RXEN, SX126X_TXEN);
LOG_DEBUG("SX126X_TXEN pin defined. Setting RF Switch: RXEN=%i, TXEN=%i\n", SX126X_RXEN, SX126X_TXEN);
res = lora.setDio2AsRfSwitch(false);
lora.setRfSwitchPins(SX126X_RXEN, SX126X_TXEN);
}
#elif defined(SX126X_RXEN) && (SX126X_RXEN != RADIOLIB_NC && defined(E22_TXEN_CONNECTED_TO_DIO2))
// Otherwise, if SX126X_RXEN is connected to the MCU, and E22_TXEN_CONNECTED_TO_DIO2 is defined, we are letting the
// E22 control RX and TX via DIO2. In this configuration, the E22's TXEN and DIO2 pins are connected to each other,
// but not to the MCU.
// However, we must still connect the E22's RXEN pin to the MCU, define SX126X_RXEN accordingly, and then call
// setRfSwitchPins, otherwise RX sensitivity (observed via RSSI) is greatly diminished.
LOG_DEBUG("SX126X_RXEN and E22_TXEN_CONNECTED_TO_DIO2 are defined; value of res: %d", res);
if (res == RADIOLIB_ERR_NONE) {
LOG_DEBUG("SX126X_TXEN is RADIOLIB_NC, but SX126X_RXEN and E22_TXEN_CONNECTED_TO_DIO2 are both defined; calling "
"lora.setRfSwitchPins.");
lora.setRfSwitchPins(SX126X_RXEN, SX126X_TXEN);
}
#endif
if (config.lora.sx126x_rx_boosted_gain) {
@@ -299,4 +312,4 @@ template <typename T> bool SX126xInterface<T>::sleep()
#endif
return true;
}
}

8
src/platform/nrf52/architecture.h
View File

@@ -66,6 +66,14 @@
#endif
#ifdef _SEEED_XIAO_NRF52840_SENSE_H_
// This board uses 0 to be mean LED on
#undef LED_INVERTED
#define LED_INVERTED 1
#endif
#ifndef TTGO_T_ECHO
#define GPS_UBLOX
#endif