Commit Graph

4 Commits (28dbbd6b3b6e12626e4a7b33de1b4ccdd133a38f)

Author SHA1 Message Date
Kevin Bracey 0f98338153 Improve efficiency and formatting of ITM output
SerialWireOutput was outputting 1 character per 32-bit write to the
ITM stimulus port. This is inefficient, and causes processing problems
with some viewers due to them receiving 3 NUL bytes between each
desired character.

Rework to allow us to be more efficient, and eliminate those NUL bytes:

* Retain existing mbed_itm_send() and clarify it's a single 32-bit write.
* Add new mbed_itm_send_block() that is appropriate for sending
  character data, and modify SerialWireOutput to use it.
* Move "wait for FIFO ready" check to before the write, rather than
  after.

One minor correction - FIFOREADY is a single bit of the register read.
Don't interpret reserved bits.
2018-07-04 10:16:28 +03:00
Martin Kojtal 700e6df834 drivers: astyle update 2018-06-29 10:36:36 +01:00
George Beckstein d3ab5c7e59
Added SerialWireOutput to mbed namespace 2018-03-22 12:35:54 -04:00
Marcus Chang bbf92fdf0d Instrumented Trace Macrocell (ITM) HAL API
HAL API for initializing the ITM and setting SWO debug output.
Actual debug output implemented as SWO FileHandle.
2018-02-16 08:24:31 -08:00