SF7BW250 works only with uplink. It never receives a downlink.

[clavisound]

TTN sends downlink with SF7BW250, but the SlimLoRa never receives it. I was close to the gateway, have to try from another room. Also try with SAMD.

[clavisound]

Maybe the offender is this delay?

SlimLoRa/SlimLoRa.h

Line 400 in 0241ca3

#define LORAWAN_RX_SETUP_MICROS 2000 // 2000 us

I have to take care the CPU freq and clock divider. The preamble is 6.272ms