Recently we bought a dev kit for the BX3105 to develop a wireless application.
At first we spend some time getting familiar with the module by using the USB connection and Putty to connect and send commands.
This went without any problems. We noticed that some functionality was not available in FW version 1. So we updated to 2.5.
Now that we were familiar with the module we connected a STM32L4+ microcontroller to it. We used Hardware flow control pins as well, since we are going to need high speed (3Mbaud+) UART connection.
After some thinkering and programming we noticed that the hardware flowcontrol is being ignored by the BX3105 module. We explicitly checked this by manually placing a wire from the RTS pin to VDD_PADS (3.3v), which should tell the module to hold with reply’ing. This is not the case, the module responds anyway.
We tried the same thing, but with a downgraded module (Firmware version 1), and the flow control is working for this version. We need firmware version 2.5 because it has certain features that we would like to use.
NOTE: We did enable flowcontrol with command: AT&K3
We would really like to receive some support on this.
Perhaps someone has an idea of what is different about the hardware flow control between the 2 firmware version.