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Re: [Paparazzi-devel] Black Magic Probe: Why two ttyACM* devices?

From: Felix Ruess
Subject: Re: [Paparazzi-devel] Black Magic Probe: Why two ttyACM* devices?
Date: Mon, 30 Mar 2015 18:57:23 +0200

The second /dev/ttyACMx is a serial device connected to the UART port on the back of the BMP.
So that is basically just like a FTDI serial<->USB adapter and you can use it to e.g. connect to the telemetry uart port on the ap for desk testing.

On Mon, Mar 30, 2015 at 6:51 PM, Michal Podhradsky <address@hidden> wrote:
Simon, you have to use swdp_scan instead of jtag_scan for Lisa MX / F4, see wiki:

I dont know why there are two devices, but you always want to use the first one (i.e. a lower number one).

On Sat, Mar 28, 2015 at 4:03 PM, Simon Liebold <address@hidden> wrote:
So far I only used the BMP to upload the firmware onto my Lisa MX using
SWD on latest master. The JTAG option never worked for me (with the
"JTAG device scan failed!" error). I never used the BMP for any
debugging - nor would I know how to do that.

But why does it create two ttyACM* devices when plugging in? Is the
other one supposed to work with the JTAG upload setting? I read that
flashing via JTAG would be much faster than via SWD. Is that correct?


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