I’m trying to comunicate with Wizfi250 module thanks to STM32 SPI bus.
For the moment, I’m just trying to send AT commands and receive [OK]. Instead of [OK], the module always return “myATcommand”[ERROR:INVALID INPUT]. I tried with command “AT\r”, “AT+MECHO=0\r”, …
How do I transfer my command :
cs = 0
send 0 as long as I didn’t receive the response from Wizfi250
cs = 1
Please, could someone help me ? I have read all the other topics talking about SPI in this forum but it didn’t help me.
Another question : I know the GPIO14 (SPI_DATA_READY) is low when Wizfi250 have a data to transmit. But does it concern only datas from external module or also for a At command response like [OK] ?
Thanks for your help