Difference between revisions of "Serial Wire Debug"
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[[File:ST-Link Bunch.jpg|400px|thumb|A bunch of ST-Link Clones. These usually cost less than $2]] | [[File:ST-Link Bunch.jpg|400px|thumb|A bunch of ST-Link Clones. These usually cost less than $2]] | ||
[[SWD]] is a [[ARM]] specific 2-wire version of [[JTAG]]. It enables developers to manipulate the built-in flash (flash new firmware), to debug firmware and to monitor memory locations (variables), live, while the firmware is running. | [[SWD]] is a [[ARM]] specific 2-wire version of [[JTAG]]. It enables developers to manipulate the built-in flash (flash new firmware), to debug firmware and to monitor memory locations (variables), live, while the firmware is running. | ||
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| + | Here is an example of a Chinese clone [[ST-Link]] hooked up to one of our [[Green Pill]] boards: | ||
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| + | [[File:ST-Link Greenpill connection.jpg|600px]] | ||
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| + | As can be seen on the photo, the GND and the 3.3V supply lines are also hooked up. | ||
Revision as of 02:29, 16 March 2022
SWD is a ARM specific 2-wire version of JTAG. It enables developers to manipulate the built-in flash (flash new firmware), to debug firmware and to monitor memory locations (variables), live, while the firmware is running.
Here is an example of a Chinese clone ST-Link hooked up to one of our Green Pill boards:
As can be seen on the photo, the GND and the 3.3V supply lines are also hooked up.