Re: [avr-gcc-list] SPI troubles on atmega8

[Anton Erasmus]

On 02/12/10 at 11:25 Jamie Morken wrote:

>Hi,
>
>I am trying to get the SPI on my atmega8 chip to send 1 byte over the MOSI
>line.
>After doing the send I wait for the transmit complete flag in the SPI
>status
>register
>to be set.  For some reason the flag is not being set and I don't think
>that
>any data is
>being transmitted either.
>
>I put the code I am using here:
>http://www.rocketresearch.org/new/midi-light.c
>
>It locks up right before the line:
>       PRINT("byte sent");
>
>


Hi,

Try reading the  SPSR register before writing the SPDR register.
Reading the SPSR register will clear the flag.
   
Regards
   Anton

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