You don't need to install the IAR or CCS. Just extract the sample programs
from them.
int putchar(int c) {
while (!(IFG2&UCA0TXIFG));
UCA0TXBUF = c;
return 1;
}
Bob.
On Nov 16, 2012, at 11:19 AM, Yama Ploskonka wrote:
> 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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>>
>
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