pc-ble-driver 115k2

[wkleunen]

I am attempting to build the latest (4.1.1) pc-ble-driver with 115k2 baudrate. I have a hardware platform which supports 115k2 as maximum baud rate. It seems only the 1m version is build now. I am changing the file components/serialization/common/ser_config.h

I update the baudrate:

/** UART transmission parameters */
#define SER_PHY_UART_FLOW_CTRL NRF_UART_HWFC_DISABLED
#define SER_PHY_UART_PARITY NRF_UART_PARITY_EXCLUDED
#define SER_PHY_UART_BAUDRATE_VAL 115200

But it seems the connectivity firmware only works at 1m. Is it still possible to build a 115k2 version ? 

[Amanda Hsieh]

Hi, 

It should be possible to use 115200 as well if you build your own application with pc-ble-driver.
You will have to follow the instructions in https://github.com/NordicSemiconductor/pc-ble-driver#compiling-connectivity-hex-files to build the connectivity firmware

And the simplest would be to change the baudrate in the patch: https://github.com/NordicSemiconductor/pc-ble-driver/blob/master/hex/nRF5_SDK_15.3.0_connectivity.patch

-Amanda H.

[wkleunen]

Hello Amanda, 

yes, i have tried changing the parameters in the ser_config.h to use 115k2, but the firmware does not work after changing these parameters. I can not connect to the board with this firmware from my pc software. 

I also tried with the precompiled firmware from version 4.0.0, but I also get the same result. The firmware works on 1M connection speed, but not 115k2. 

[wkleunen]

For example the following firmware:
https://raw.githubusercontent.com/NordicSemiconductor/pc-ble-driver/release/4.0-compiled-connectivity/hex/sd_api_v5/connectivity_4.0.0_115k2_with_s132_5.1.0.hex

Can not be opened at 115200 using the heart rate collector example:
https://github.com/NordicSemiconductor/pc-ble-driver/blob/master/examples/heart_rate_collector/main.c

[Amanda Hsieh]

wkleunen said:

Can not be opened at 115200 using the heart rate collector example:

 Did you modify the #define DEFAULT_BAUD_RATE at https://github.com/NordicSemiconductor/pc-ble-driver/blob/master/examples/heart_rate_collector/main.c#L67?

-Amanda H.

[wkleunen]

Yes, i did modify DEFAULT_BAUD_RATE.