URL:
<http://savannah.nongnu.org/bugs/?49447>
Summary: Example code for uart_putchar() has error in
recursive call
Project: AVR C Runtime Library
Submitted by: normandunbar
Submitted on: Wed 26 Oct 2016 11:57:57 AM GMT
Category: Documentation
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Documentation
Status: None
Percent Complete: 0%
Assigned to: None
Originator Email:
Open/Closed: Open
Discussion Lock: Any
Release: 2.0.0
Fixed Release: None
_______________________________________________________
Details:
Good Afternoon All,
I have checked the bug database for anything relating to uart_putchar() and
found two references that do not cover the following.
In the example code given in Note 2 for "Running stdio without malloc()" in
the section covering the "<stdio.h>" header features, the recursive call to
uart_putchar() is missing the second "stream" parameter.
The example given is:
int
uart_putchar(char c, FILE *stream)
{
if (c == '\n')
uart_putchar('\r');
loop_until_bit_is_set(UCSRA, UDRE);
UDR = c;
return 0;
}
And I'm sure it should be:
int
uart_putchar(char c, FILE *stream)
{
if (c == '\n')
uart_putchar('\r', stream);
...
}
The example given just prior to the above section is correct in that it does
pass the second parameter.
Cheers,
Norm.
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