Stop using async writes in CYW43 driver for BTStack #3042
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gh-raspberrypi/pico-sdk!3042
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Delete branch "matthias_async_fix"
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Evidentially, the cyw43 btstack implementation is behaving like an async implementation in that it implements hci_transport_cyw43_can_send_now which always returns true and we send the HCI_EVENT_TRANSPORT_PACKET_SENT in hci_transport_cyw43_send_packet. This can cause problems, e.g. see https://github.com/bluekitchen/btstack/issues/738
@mringwal
LGTM