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PER TX example freezes on SX1262 EVK when the touchscreen is attached #355

@kmuster-semtech

Description

@kmuster-semtech

A customer noticed that when a touchscreen is attached to the SX1262 EVK (PCB_E428V03A), the PER example (RX = False) freezes on the second transmission count. This is solved by removing the touchscreen or using an actual SX1262MB2CAS shield (PCB_E499V01B). It might be helpful to find what causes this freeze or make note of this behavior somewhere in the ReadMe so other users don't encounter this issue.

Terminal output:
INFO: ===== SX126x PER example - Transmitter =====

INFO: SDK version: v2.3.0
INFO:
INFO: Common RF parameters:
INFO: Packet type = SX126X_PKT_TYPE_LORA
INFO: RF Freq = 863000000 Hz
INFO: Output power = 22 dBm
INFO: Fallback mode = SX126X_FALLBACK_STDBY_RC
INFO: Rx boost mode deactivated
INFO:
INFO: LoRa modulation parameters:
INFO: Spreading Factor = SX126X_LORA_SF6
INFO: Bandwidth = SX126X_LORA_BW_125
INFO: Coding rate = SX126X_LORA_CR_4_5
INFO:
INFO: LoRa packet parameters:
INFO: Preamble length = 8 symbol(s)
INFO: Header mode = SX126X_LORA_PKT_EXPLICIT
INFO: Payload length = 222
INFO:
INFO: LoRa sync word = 0x12
INFO: Tx done
INFO: Counter value: 1
INFO: Tx done
INFO: Counter value: 2

(device freezes with red TX LED on)

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