Hi Dan,
TI sell a gang programmer which does basically what you want for
production. It keeps most of the JTAG lines common for up ro 8 devices,
and uses just one special wire for each device to select which one gets
programmed. This idea could be extended to a greater number of devices.
The development tools, on the other hand, do not currently support this
type of operation. They are designed for one-to-one connections between
the JTAG tool and the device. If you can live with a connector per MCU
for development, naybe this will work out OK for you.
Regards,
Steve
Dan Miner wrote:
I have an application where I'll have multiple MSP430's on
the same board. Since the programming interface is JTAG it
should be a trivial matter to daisy chain the chips together
so they can all be programmed from a single connector.
I don't have the space for one connecter per MSP.
However the word I got from TI is that their software doesn't
support this. Does anyone know a way to do this? Does the
mspgcc tool set support this? If not, can someone add this
functionality to the tool set?
I'll have prototype hardware in a week or two. For software
development, we added a connector per MSP, but we'll need to
get rid of those for production.
FYI - The production boards will have 16 to 20 MSP430's on
them so the connectors take up a LOT of space.
