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Username0C
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| LCD driver string formating |
 Posted: Sun Nov 01, 2009 8:37 am |
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I'm having problems with lcd eaDogme string formatting.
The driver from the code library is working OK but I don't know how
to set some signs or how to use \f .
What I want to do is set the >> sign before some other text.
| Code: |
printf(lcd_putc,"\f >> %s",Value);
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In eadogme this should be set like this:
| Code: |
printf(eaDogM_WriteString, Value);
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but on this way I can't set any >> sign
so this should be done like:
| Code: |
#define EADMSYM_DARWR 0b11111100 // double >>
void eaDogM_double(void) {
eaDogM_WriteCommand(EADMSYM_DARWR);
}
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But how to call it inside WriteString function ?. |
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PCM programmer
Joined: 06 Sep 2003
Posts: 21708
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| Posted: Sun Nov 01, 2009 2:58 pm |
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| Quote: |
I'm having problems with lcd eaDogme string formatting.
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You could use sprintf() to put formatted output into a character buffer
(an array). Then give the buffer to the EADogm write_string routine.
| Quote: |
In eadogme this should be set like this:
printf(eaDogM_WriteString, Value);
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I don't think that's true.
At the top of his program, he says the function takes a single char
as the argument:
| Code: | | eaDogM_WriteString(char str); // writes a string to the display |
But then within the program, he now says it takes a string pointer:
| Code: | | void eaDogM_WriteString(char *strPtr) |
Your proposed code assumes that his first definition is correct.
But in fact, the write string function really expects a string buffer.
That's why I suggested using sprintf() to make string, and put it into
a buffer (you must declare the buffer before using sprintf), and then
give the buffer to the write string function. |
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