Serial Problem in AVR

[kimgunzung]

Hi Giovanni,

I'm using ChibiOS/RT 2.2.3 with ATMega128A and AVR-GCC 4.3.3 (WinAVR 20100110).

There is error in source code in serial_llc.c in AVR port.
At line 192, SER1 should be SD1.

The USART0 is not working under the 38400bps.
There is no output at USART0 under the 38400bps.
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[Giovanni]

Hi,

Thanks for reporting this problem, I will verify it and open a ticket.

Giovanni

[kimgunzung]

It is a problem of UBRR macro.
The AVR-GCC make warning "large integer implicitly truncated to unsigned type".

I modify UBRR macro such as below. This has no problem and no warning.

#define UBRR(b) (((F_CPU / b) >> 4) - 1)

[Giovanni]

Thanks for the fix, I didn't notice any warning, probably I am using an old version of AVR-GCC, time to upgrade it. I'll commit your change.

Giovanni