Good question, there exists an issue that can be used for this discussion:
From: email@example.com <firstname.lastname@example.org> on behalf of email@example.com <firstname.lastname@example.org>
Sent: Wednesday, September 26, 2018 12:33:18 PM
Subject: [Zephyr-devel] BLE stack using PPI channels #ble #nrf52832
In my application I was try to use 6 PPI channels. And I discovered that almost all channels is used by BLE stack.
NRF52 chip have dedicated PPI [20:31] channels for radio. Why this challens was not used by BLE stack.
Is three any posibilities to change this?
Thanks in advance!