Hello, I write this post because I have a question while using the ST67W61 chip.
First,
I tested soft-AP function with a NUCLEO-H563ZI board and an X-NUCLEO-67W61M1 board.
I used sdk example project ST67W6X_CLI of x-cube-st67w61-v1.0.0.
It worked well.
And then,
I tested AT command with a NUCLEO-H723ZG board and an X-NUCLEO-67W61M1 board.
I received some report. -- ①
MOSI : 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
MISO : 0xAA 0x55 0x09 0x00 0x00 0x00 0x00 0x00 0x0D 0x0A 0x72 0x65 0x61 0x64 0x79 0x0D 0x0A 0x00 0x00
I understood this report as ready st67 chip.
and,
I sent AT command.
MOSI : 0x41 0x54 0x0D 0x0A 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
MISO : 0xAA 0x55 0x00 0x00 0x00 0x00 0x00 0x00 0xDD 0xCC 0xBB 0xAA
after I send this AT command, there was no longer report from st67 chip.
so, I checked SPI signal with NUCLEO-H563ZI and X-NUCLEO-67W61M1, sdk.
First, it received same ① report.
and, 563ZI sent AT command.
MOSI : 0x8A 0x55 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x41 0x00 0x0C 0x0A
MISO : 0xAA 0x55 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0xDD 0xCC 0xBB 0xAA
and, received
MOSI : 0x8A 0x40 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
MISO : 0xAA 0x55 0x00 0x00 0x00 0x00 0x00 0x00 0x0D 0x0A 0x4F 0x4B 0x0D 0x0A 0x00 0x00
I couldn't understand this communication protocol, and I couldn't find docs about this protocol.
I was wondering why the master board sent 0x8A 0x55 and why there was 0x8A 0x40 when I received the data from the slave.
Thank you.
