T-Beam T22 v1.1 SX1262

kannix · March 22, 2021, 3:49pm

Ahoi,

just got a fresh Lilygo T22 v1.1 /w SX1262 and wonder, how to do something usefull:

Is anybody using GitHub - beegee-tokyo/SX126x-Arduino: Arduino library to use Semtech SX126x LoRa chips and modules to communicate on this device?
Other ‘TTN capable’ libraries to consider?

Thanks for your help, Dirk

Linar · March 22, 2021, 4:50pm

github.com

LacunaSpace/basicmac/blob/master/target/arduino/examples-common-files/standard-pinmaps.ino#L113


const lmic_pinmap lmic_pins = {
    .nss = 18,
    // RX/TX is controlled through RXTX by the SX1272 directly on the RFM95W
    .tx = LMIC_UNUSED_PIN,
    .rx = LMIC_UNUSED_PIN,
    .rst = 14,
    .dio = {26, 33, 32},
    .busy = LMIC_UNUSED_PIN,
    .tcxo = LMIC_UNUSED_PIN,
};
#elif defined(ARDUINO_TBeam)
// TTGO T-Beam development board
// https://github.com/LilyGO/TTGO-T-Beam
// This board is available with an SX1276 or SX1262 soldered on. The board is
// otherwise identical and does not have a separate board entry in the
// Arduino IDE, so decide based on the radio constant which one to use.
//
// Uses LoRa SPI bus at 5/19/27
// This uses LORA_* constants from the board variant file
#if defined(BRD_sx1276_radio)
const lmic_pinmap lmic_pins = {

bluejedi · March 22, 2021, 9:54pm

Be aware that the AXP power management chip on T-Beam versions 1.x must be configured at the start of setup (after initializing Wire/I2C). See the T-Beam topic for more information. Older versions did not have the AXP chip.