I got the windows cellular interface demo to work with a dev board equipped with the SARA-R410M-02B-01. The windows demo works without using UART flow control.
Now I’m trying to get it to run on my microcontroller and I noticed the STM32 L475 comm interface uses UART flow control. In the datasheet of the SARA-R4 series it is mentioned that the SARA-R410M-02B-00 does not support flow control. The last two digits of my modem are “01” instead of “00” and the meaning of these are not mentioned in the datasheet, so I’m not sure if I can use the available comm layer for the L475.
Anyone here with some experience with this?
I’m also interested in the reason for choosing flow control instead of DMA.