Eric Holland fbac7e3f8f [nrf52][tick] improve RTC use for LK tick
Using the RTC1 module for the LK tick (instead of arm systick)
Use the nrf_hal library for peripheral manipulation instead of
direct register access.  Fixed race condition in current_time_hires
which would result in non monotonic readings.

Tested with clock_tests on:
  nrf52-pca10040-test  (nrf52832)
  nrf52-pca10056-test  (nrf52840)
2020-10-14 16:12:07 -04:00
2020-07-25 17:16:22 -07:00
2020-05-17 14:19:25 -07:00
2020-05-17 13:55:16 -07:00
2015-01-29 20:38:19 -08:00
2016-05-01 23:36:17 -07:00

LK

The LK embedded kernel. An SMP-aware kernel designed for small systems.

See https://github.com/littlekernel/lk for the latest version.

See https://github.com/littlekernel/lk/wiki for documentation.

Builds

Build Status

To build and test for ARM on linux

  1. install or build qemu. v2.4 and above is recommended.
  2. install gcc for embedded arm (see note 1)
  3. run scripts/do-qemuarm (from the lk directory)
  4. you should see 'welcome to lk/MP'

This will get you a interactive prompt into LK which is running in qemu arm machine 'virt' emulation. type 'help' for commands.

note 1: for ubuntu: sudo apt-get install gcc-arm-none-eabi or fetch a prebuilt toolchain from http://newos.org/toolchains/arm-eabi-5.3.0-Linux-x86_64.tar.xz

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