From 7784b9c48f9e77d740ccc7e4929c5e944cdb1afd Mon Sep 17 00:00:00 2001 From: hathach Date: Wed, 22 Apr 2020 17:13:40 +0700 Subject: [PATCH] more rtt software --- examples/readme.md | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/examples/readme.md b/examples/readme.md index 45746cc7..09278722 100644 --- a/examples/readme.md +++ b/examples/readme.md @@ -44,12 +44,14 @@ $ make LOG=2 BOARD=feather_nrf52840_express all ### Logger -By default log message is printed via on-board UART which is slow and take lots of CPU time comparing to USB speed. If your board support on-board/external JLink debugger, it would be more efficient to use it with RTT protocol for logging. To do that add option `LOGGER=rtt` to build command e.g +By default log message is printed via on-board UART which is slow and take lots of CPU time comparing to USB speed. If your board support on-board/external JLink debugger, it would be more efficient to use it with [RTT protocol](https://www.segger.com/products/debug-probes/j-link/technology/about-real-time-transfer/) for logging. To do that add option `LOGGER=rtt` to build command e.g ``` $ make LOG=2 LOGGER=rtt BOARD=feather_nrf52840_express all ``` +The log can be retrieved by JLink RTT Viewer/Client/Logger software which is bundled with their JLink driver. + ## Flash `flash` target will use the default on-board debugger (jlink/cmsisdap/stlink/dfu) to flash the binary, please install those support software in advance. Some board use bootloader/DFU via serial which is required to pass to make command