nuttx

History

Gregory Nutt bbbe9d85c5 Move EXIDX assignments inside of braces so that we can be assure that the symbols have the correct alignment. Suggested by Daniel P. Volpato Squashed commit of the following: Some scripts use TABs, others spaced. Make usage consistent. Move __exidx_end assignment inside of brackets. Remove old __exidx_end assignment. Move __exidx_start assignment inside of brackets. Remove old __exidx_start assignment		2019-09-12 09:57:50 -06:00
..
configs/nsh	Merged in alinjerpelea/nuttx (pull request #967 )	2019-08-07 20:49:39 +00:00
include	Merged in alinjerpelea/nuttx (pull request #996 )	2019-08-15 16:19:17 +00:00
scripts	Move EXIDX assignments inside of braces so that we can be assure that the symbols have the correct alignment. Suggested by Daniel P. Volpato	2019-09-12 09:57:50 -06:00
src	Fix typos in comments.	2019-08-21 09:32:59 -06:00
Kconfig	Merged in alinjerpelea/nuttx (pull request #967 )	2019-08-07 20:49:39 +00:00
README.txt	Merged in alinjerpelea/nuttx (pull request #967 )	2019-08-07 20:49:39 +00:00

README.txt

README
^^^^^^

README for NuttX port to the SAM4CMP-DB board.

  http://www.atmel.com/tools/SAM4CMP-DB.aspx

The board is intended to test NuttX SMP features for dual Cortex-M4.


Settings
^^^^^^^^
1. Both CPUs are running at 92.160MHz with PLLB.
2. Serial console can be used via on-board USB-UART (115200/8/N/1)
3. Interrupt handlers such as timer and UART are handled on CPU0
4. Both CPUs share internal SRAM0 (128KB)
5. SRAM1 is used to boot CPU1.
6. Cache controllers are disabled because of no snooping features.

Status
^^^^^^
Currently SMP freature works on the board but is not stable.

1. "nsh> sleep 1 &" works without crash.
2. "nsh> smp " sometimes works but some assertions might happen.
3. "nsh> ostest " causes deadlocks during the test.