Uart access to bgs2-w over b80 eval kit | Thales IoT Developer Community
September 6, 2016 - 9:51am, 1907 views
Hello,i tried to accessing the bgs2-w on a b80 eval kit over the uart lines that are exposed by the 2x40 pin connectors. I tried baudrates of 9600 bps and 115200 bps. Since i dont have hardware flow control available i connected the RTS and CTS pins, but as i understood from the manual flow control is disabled by default anyway.
As i understood normaly the DSB-Mini Support Board should be used for direct UART access, which i dont have available. How is it possible to switch from access over USB-VCP to access over UART?
BR,
Sebastian
I further connected GND.DETECT of the 2x40 pin connector with ground as stated on page 24 in the scematic of the DSB-Mini's user guide ( https://m2m.dk/gemalto-udvikling-s-kit/216-cinterion-concept-board.html ), but there is still no response over UART from the bgs2w.
Hello,
The ASC0 lines should be available on the 2x40-pin connector of the B80 starter kit. Please check the line numbers in the module's hardware description as it is stated in the B80 User Guide that different modules may have different naming conventions and signal functions, the signal names given in Table 5 for the 2x40-pin connector may vary. Additionally the B80 has 80-pin connector for the module and bgs2 60-pin so you must be using a converter.
Regards,
Bartłomiej
I measured the resistance from the ASC0 bgs2-w pads (RXD0, TXD0) to the corresponding pins of the 2x40 pin connector (somehow with around 50 Ohm per line). Regarding that measurement Table 5 seems to be correct.
Hello,
I have placed the B80 with bgs2-w module on DSB mini and then it was possible to communicate over ASC0 (after setting the ASC0 switch to RS232).
Regards,
Bartłomiej
Well i purchased the dsb-mini support board and now it works.