I am trying to transfer 256 bytes of at data 1M baud rate from my PC to an =
Atmega328 microcontroller. I am using checksum to verify the integrity of t=
he data and I am emptying the received data into a ring buffer as quickly a=
s possible. This is all I have in my interrupt subroutine:
temp =3D UDR0;
BufferWrite(&rx_buffer,&temp);=20
The data is transferred properly only at speeds upto 250K baud rate. It res=
ults in error beyond that point. The Atmega 328 datasheet specifies that it=
 possible to transfer at speeds upto 2M baud rate. The ring buffer size is =
about 400 bytes and I am looking for some suggestions to achieve higher bau=
d rates while maintaining the data integrity.
Sai
--=20
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