Bob,
I am afraid that the platform I work on does not give me room for IAR or
CCS.
I can ONLY depend on Terminal-like utilities, under Linux.
How do I write putchar? The examples I see when googling putchar() seem
to mean it is a built-in thing?
I have found several examples of printf() for msp430-gcc, where the
author wrote something like "To Be Developed"...
Thank you!
Yama
On 11/16/2012 01:15 PM, Robert Henig wrote:
You can find code samples in either the IAR Workbench download or the
CCS download from here:
http://www.ti.com/lsds/ti/microcontroller/16-bit_msp430/8-bit_value_line.page?DCMP=D_MCU_MSP430_MSP430&CMP=KNC-GoogleTI&247SEM
You need to write the putchar() function yourself for printf() to work.
Bob.
On Nov 16, 2012, at 11:02 AM, Yama Ploskonka wrote:
Hi Bob,
my apologies. Part of my problem is that I don not know WHAT to ask,
and there are so many possibilities, while the ones I tested do not
seem to work. TI has code for their tools. I need to manage just from
ZLinux Terminal, with mspdebug and msp430-gcc
not meaning to have someone do my work for me, would you be so kind
to point me to a specific example/URL where I could find such echo
program, that would run from Terminal, with mspdebug and msp430-gcc?
I have been looking for days now...
I am using the USB cord. Is that relevant to what you say about
"level shifter"? sorry, noob here.
as to putchar(), I get /
undefined reference to 'putchar'/
when I run msp430-gcc. Maybe I am missing some include?
sorry again, and thanks!
On 11/16/2012 12:34 AM, Robert Henig wrote:
Hi Yama,
I'm not sure what you're asking for here. You should be able to find sample
UART code on the TI site. There are samples in the Launchpad download package.
The code is a simple echo program that echos characters received back to the
terminal. Get that working before you play with printf(). If you're using a
Launchpad and hooking the rx and tx to a serial port on a computer you'll need
to use a level shifter on the signals. Search for 'rs232 level shifter' on the
web.
To get printf() to work you need to provide a putchar() function.
Bob.
On Nov 15, 2012, at 9:18 AM, Yama Ploskonka wrote:
Hi,
Please help me figure out UART using a Launchpad, and Linux!
It might be something obvious that I am missing somehow, after several
days hunting.
the goal: transfer data (text) to an MSP430 on the Launchpad, which then
is used there as input for some further processing
AND
get feedback from the MSP430 that gets displayed in the host computer -
ideally in such a form that can be used as input for something running
there.
printf() seems to be a major issue in the middle of all this.
I routinely manage things with msp230-gcc, mspdebug, from Terminal.
Thank you!
Yama the Perpetual Noob (and oh so appreciative to y'all)
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