circuitpython/ports/nrf/supervisor
Sean Cross fd4ef233c6 nrf: port: add memory barrier before wfi
ARM recommends issuing a DSB instruction propr to issuing WFI, as it is
required on many parts suchas Cortex-M7. This is effectively a no-op on
the Cortex-M4 used in most NRF parts, however it ensures that we won't
be surprised when new parts come out.

See
http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0321a/BIHICBGB.html
for more information.

Signed-off-by: Sean Cross <sean@xobs.io>
2020-05-21 21:46:37 +08:00
..
cpu.s Support gathering register values on nrf. 2018-07-03 06:31:07 -07:00
internal_flash_root_pointers.h Move atmel-samd to tinyusb and support nRF flash. 2018-11-08 17:25:30 -08:00
internal_flash.c Hopefully fix flash flush and hopefully audio as well. 2020-03-13 11:12:31 -07:00
internal_flash.h Fixups for adafruit/circuitpython#1042 2019-04-16 14:53:44 +10:00
port.c nrf: port: add memory barrier before wfi 2020-05-21 21:46:37 +08:00
qspi_flash.c nrf: sqpi_flash: Handle unaligned reads 2020-02-28 10:03:37 -06:00
serial.c WIP: bonding 2019-10-06 21:30:26 -04:00
usb.c Merge remote-tracking branch 'adafruit/master' into lower_power 2020-04-27 16:45:10 -07:00