HI:
When I use battery as power, connection between Demo App and CSR1010 device will lost after a while.
And device enter a strange state, it could not be discover or reset unless re-flashed.
What reason could be ?
HI:
When I use battery as power, connection between Demo App and CSR1010 device will lost after a while.
And device enter a strange state, it could not be discover or reset unless re-flashed.
What reason could be ?
Opinions expressed in the content posted here are the personal opinions of the original authors, and do not necessarily reflect those of Qualcomm Incorporated or its subsidiaries (“Qualcomm”). The content is provided for informational purposes only and is not meant to be an endorsement or representation by Qualcomm or any other party. This site may also provide links or references to non-Qualcomm sites and resources. Qualcomm makes no representations, warranties, or other commitments whatsoever about any non-Qualcomm sites or third-party resources that may be referenced, accessible from, or linked to this site.
You may consume to much power and the battery CR2032 gets lower than 2V.
Be aware that small batteries have large internal resistances.Thus there can be a large dip in voltage when the BLE chip turns on - for example to transmit data. TI publishes a good application note on this topic: http://www.ti.com/lit/wp/swra349/swra349.pdf
I don't know what happens in practise with a CSR1010 during these voltage dips - does it fail gracefully? It is worrying to read that "it could not be discover or reset unless re-flashed".
What about the "sys_event_battery_low" event? My guess is that this is not a response to a short-term dip in supply voltage during radio activity, but only to a long-term reduction in battery volatge. Does anyone know?
Regards - Charles
Try to use desktop power supply and repeat the tests.