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Lep
Senior
Oct 18, 2022 5:24 AM UTC
Question

STM32WB55RGV6When a gpio detects an external event (triggered by the falling edge), the server sends a 15 byte notification. I use stm32wb55rgv6 to collect ADS1299 (ADC) data. The sampling rate is 1K (that is, 1000 falling edge triggers).

When a gpio detects an external event (triggered by the falling edge), the server sends a 15 byte notification. I use stm32wb55rgv6 to collect ADS1299 (ADC) data. The sampling rate is 1K (that is, 1000 falling edge triggers). The server should send 1000 15 byte notifications per second, but in fact, I can only receive 180 15 byte notifications.

Under the same peripheral configuration, I will store the collected data to the SD card. There is no error in the data. However, when I use Bluetooth, the data will be missing a lot.

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2 replies

Remy ISSALYS
ST Technical Moderator
Nov 7, 2022 3:13 PM UTC

Hello,

The number of notifications send each second depend of the connection interval and the CE length used in your application.

Best Regards

Lep
LepAuthor
Senior
Nov 8, 2022 1:25 AM UTC

Thank you.