Skip to main content

UART parity

DA14530 and DA14531

6 months ago

Posted by Robbie 15 points 3 replies


I want to use your product in a wearable device. We use for communication between our MCU and the BT module, serial transmission over RX and TX. we have( at this moment) 115200; 8 bits, even, 1 stopbit.

My question is if your  DA14531 supports this? If not, is thre a work arround? we only send software updates via this BT link to our wearable device.

Another question I have is related to the SIG organisation. how can I use your module in my design? 

Hope you can help,


Kind regards, Rob van VReden

6 months ago


Hi Robbie,

Thanks for your question online and for your interest in our BLE solutions.

Yes, it supports even parity. You can test this with the UART example of the SDK :\projects\target_apps\peripheral_examples\uart

Please check uart_cfg in user_periph_setup.h header file. The parity is set to UART_PARITY_NONE by default. You could change it to UART_PARITY_EVEN and configure your serial terminal accordingly.

You can also refer to section 14 in the DA14530 datasheet to find more information on the UART HW block.

Regarding your second question, could you please clarify it? See section 8 Design Guidelines in the DA14531 Module Datasheet .

In the TINY module support page, you will also find FCC, ETSI, BT SIG and other certifications :

Thanks, PM_Dialog

6 months ago



Thanks for the fast reply! It is great it supports the even parity bit. that solves an issue for us. 

The question regardoing SIG is as follows: I see that your modules have a QDID and Declaration ID. But what steps do I have to take to be able to use the BT module? As far as I understand, I have to registers at SIG beeing an Adopter Member. It seems to be free of charge. 

Assuming, beeing a member, when I register my product at SIG and list your BT QDID, do you know if any fees are involved? at SIG, that part is not very clear.


kind regards,


6 months ago


Hi Robbie,

Please check section 13 Bluetooth® SIG Qualification from the DA14531 Module Datasheet . The TINY module is listed on Bluetooth® SIG Website as a qualified product

See also this video:

The module is qualified to be added in your design so you should only concentrate on your end product. The stack, the profiles etc. and have been taken through BT qualifications, so if you don’t do major then you can leverage from our qualifications.

If you have any follow-up question, please raise a new forum ticket as this one is related to UART parity.

Thanks, PM_Dialog