mbed-os

Commit Graph

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	483427a285	hal: astyle update	2018-06-29 10:36:36 +01:00
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

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

483427a285

hal: astyle update

2018-06-29 10:36:36 +01:00

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

3 Commits (4c94d78f1b07b96c0015968583196be65eb73159)