Problem in Running SX1281 Semtech lora IC with Stm32 UART protocol

[Ensorcell]

hello,
I'm trying to run sx1281 lora ic from semtech with stm32 by uart protocol
1- at the first I reset hardware by reset pin and then
2- send getstatus() command to get mode of ic , for this command I examine BUSY pin to be Low after that I transmit getstatus() command, ic response me STDBY_RC mode and it's ok
3- depends on datasheet then I should to setpackettype(), when I send setpackettype() command or any SET command, voltage of BUSY pin goes to high and remain high!! and I can't send another commands!! I expect after set command busy pin goes to low voltage

please help

 

[ahsrabrifat]

Check your USART configuration. Check the baud rate, parity, stop bits, etc.