If you are talking Microcontrollers, most have a 1 or 2 byte transmit and receive buffer....Hello.
What is the largest payload that can be transferred through UART in a single message?
Thanks.
I don't understand how you can posit an equivalence between a "message" and a "buffer". In no way that I know of are they even remotely the same thing. Even TCP/IP allows for the assembly of messages over multiple packets and buffers.If you are talking Microcontrollers, most have a 1 or 2 byte transmit and receive buffer....
B. Morse
I don't understand how you can posit an equivalence between a "message" and a "buffer". In no way that I know of are they even remotely the same thing. Even TCP/IP allows for the assembly of messages over multiple packets and buffers.
The EUSART module includes the following capabilities:
• Full-duplex asynchronous transmit and receive
• Two-character input buffer
• One-character output buffer
• Programmable 8-bit or 9-bit character length
• Address detection in 9-bit mode
• Input buffer overrun error detection
• Received character framing error detection
• Half-duplex synchronous master
• Half-duplex synchronous slave
• Programmable clock polarity in synchronous
modes
• Sleep operation
this is what I meant in the first post.... Plus usually you would compose a "message" in a "buffer" before you can transmit it, so IMO they are directly related....The receive FIFO buffer can hold two characters. An
overrun error will be generated if a third character, in its
entirety, is received before RCREG is read to access
the FIFO. When this happens the OERR bit of the
RCSTA register is set. Previous data in the FIFO will
not be overwritten. The two characters in the FIFO
buffer can be read, however, no additional characters
will be received until the error is cleared. The OERR bit
can only be cleared by clearing the overrun condition.
If the overrun error occurred when the SREN bit is set
and CREN is clear then the error is cleared by reading
RCREG. If the overrun occurred when the CREN bit is
set then the error condition is cleared by either clearing
the CREN bit of the RCSTA register or by clearing the
SPEN bit which resets the EUSART.
by Duane Benson
by Duane Benson
by Aaron Carman