Quote:
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Originally Posted by cbolin
Hi,
I am trying to print the examples in the printf_lib.c commented examples.
I initialized the variables as directed and then called the following each second.
Code:
printf("%s\n",StrPtr); //will display 'Hello world!'
printf("X = %d, Y = %x, Z = %lx\n",x,y,z); // will display 'X = 15'
// 'Y = 0x50'
// 'Z = deadface'
printf("X = %b (base 2)\n",x); // will display 'X = 1111 (base 2)'
printf("X = %16b\n",x); // will display 'X =
// 0000000000001111'
printf("X = %04x\n",x); // will display 'X = 000f'
Here are the results printed to the IFI_Loader Terminal.
Code:
H
1 5 ddf 1 01 0
...sometimes I get this...
H
1 5 ddf= 12 01 0
My printf isn't processing all the characters...only the first it seems. Any thoughts on how to get this working? A UART initialization problem? My PC?
Regards,
ChuckB |
Transmitting before initializing the UART results in the notorious red-green light problem. As for bad initialization, I can't tell you.
IFI's implementation of printf doesn't do all the control codes that the PC versions use. But the code given is copied from printf_lib.c (lines 19 through 27)
It looks like it's loosing characters, either totally or just garbled. They come through interminently, but when they come in they are intact. (a baud-rate mismatch usually results in framing errors, garbage, and/or extra/lost bytes)
When I can get the config dialog fixed, I'll upload Comm Test to
my site (to
http://endeavour.zapto.org/astro73/programs/). The version that is up at the moment is broken.