Hi,
I've got a problem with SDCC for the PIC16F8722, and I'm willing to submit
patches, if there's a reasonably quick fix for this. The following code snippet
reveals the problem:
#include <pic18fregs.h>
#include <usart.h>
void putchar (char c) __wparam
{
while(usart_busy() != 0);
usart_putc(c);
}
void main()
{
char text[] = {'D', 'u', 'c', 'k'};
char *ptr;
usart_open(USART_TX_INT_OFF & USART_RX_INT_OFF & USART_BRGH_HIGH &
USART_EIGHT_BIT & USART_ASYNCH_MODE, 64);
while(1)
{
ptr = text;
putchar(*ptr); // Prints garbage
putchar(*text); // Prints "D"
}
}
I've been looking at disassemblies, and stepping through the code and the
problem seems to focus around _gptrget1. I'm not sure that the parameters are
being correctly loaded for it.
It seems that support for PIC16F8722 is very new. It's only present in SVN - no
official release yet. Is it still immature? Is there anything fundamental
standing in the way of supporting it better? I ran a "make test-pic16" in the
regression tests, and almost all of those passed. Would that have tested the
8722? or only other PICs? I guess not, because gpsim doesn't appear to support
the 8722.
I'm using MPLAB to program the hardware with an ICD2. Usually I import a hex
file, but if I import the cod file into MPLAB, it pops up the message "The
Extended CPU Mode configuration bit is enabled, but the program that was loaded
was not built using extended CPU instructions. Therefore, your code may not
work properly."
Is that relevant at all?
What do you think?
Joel
This message should be regarded as confidential. If you have received this
email in error please notify the sender and destroy it immediately.
Statements of intent shall only become binding when confirmed in hard copy by
an authorised signatory. The contents of this email may relate to dealings
with other companies within the Detica Limited group of companies.
Detica Limited is registered in England under No: 1337451.
Registered offices: Surrey Research Park, Guildford, Surrey, GU2 7YP, England.
------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day
trial. Simplify your report design, integration and deployment - and focus on
what you do best, core application coding. Discover what's new with
Crystal Reports now. http://p.sf.net/sfu/bobj-july
_______________________________________________
Sdcc-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/sdcc-user
