RE: Multiple notifications on multiple characteristics

carltonlee — Tue, 21 Apr 2015 15:45:36 GMT

I have tried a for loop to try to make it cycle through the pipes that are open, but it always defaults to the first one in the cycle that is open. I confess that I'm still trying to figure out this API and don't really understand how ack works in relation to notifications... I thought it only applied to read/write.

RE: Multiple notifications on multiple characteristics

Modes R. — Tue, 14 Apr 2015 14:05:54 GMT

If you look in deep into your source code, there is a parameter called "radio_ack_pending" that is setting to "true" after the sending of the first message through the PIPE_AIR_QUALITY_SENSOR_TEMPERATURE_MEASUREMENT_TX. The meaning of this parameter is related to the "aci_state.data_credit_available" parameter (check the doc). With this code, it's quite hard to send messages through all the pipes at the same time.

I recommend to you the implementation of some kind of token ring /multiplex algorithm in order to scan the availability of the pipes in different times. You can use in your "loop()" method a simple integer variable or some flags to activate/deactivate the scanning process between the GATTServices; or you can look for more complex C algorithms to carry on this task.