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README.md: Mention the PC-Hosted GDB server.

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Uwe Bonnes 2020-05-09 18:14:18 +02:00
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@ -23,3 +23,26 @@ makes [SWO viewing as simple as connecting to a serial port](https://github.com/
See online documentation at https://github.com/blacksphere/blackmagic/wiki
Binaries from the latest automated build are at http://builds.blacksphere.co.nz/blackmagic
BLACKMAGIC
==========
You can also build blackmagic as a PC hosted application
"make PROBE_HOST=hosted"
This builds the same GDB server, that is running on the Black Magic Probe.
While connection to the Black Magic Probe GDB server is via serial line,
connection to the PC-Hosted GDB server is via TCP port 2000 for the first
GDB server and higher for more invokations. Use "tar(get) ext(ented) :2000"
to connect.
PC-hosted BMP GDB server can talk to the Black Magic Probe itself,
ST-LinkV2 and V3, CMSIS-DAP, JLINK and FTDI MPSSE based debuggers.
When connected to a single BMP supported probe, starting "blackmagic" w/o any
arguments starts the server. When several BMP supported probes are connected,
their types, position and serial number is displayed and the program exits.
Add "-P (position)" to the next invokation to select one.
PC hosted BMP also allows to flash, read and verify a binary file, by default
starting at 0x08000000. The "-t" argument displays information about the
connected target. Use "-h " to get a list of supported options.