Hi all: Not strictly AVR, but since I've got these little babies connected to my AVR there is a connection there (no pun intended).
We're having trouble when sending large-ish amounts of data from an AVR serial port to a windows ce embedded PC (PIII-1GHz) via an FTDI232 USB-serial bridge. There are no such troubles when a direct serial connection is used to a windows XP host. The baud rate is 38400, so I wouldn't have thought that the PIII would have any trouble keeping up, but there is missing data when we try to send more than 256 bytes down the line. The data is always missing at the 256 byte mark, which indicates to me a buffer overrun problem. There appear to be no troubles when we run at 9600 baud, but we need to run at the faster speed, and our packet size can be as small as 412 bytes (yes, 412 not 512) due to the nature of the data. We could split the data further but I'd really rather solve the cause issue. Has anyone on the list encountered and solved this problem before, either by tweaking the FTDI driver, or by adding flow control, or something else. Cheers, Matthew van de Werken - Electronics Engineer CSIRO E&M - Rock Mass Characterisation - 1 Technology Court - Pullenvale - 4069 p: (07) 3327 4142 * f: (07) 3327 4455 * e: [EMAIL PROTECTED] "We do not inherit the earth from our ancestors, we borrow it from our children." -- Native American Proverb _______________________________________________ AVR-chat mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/avr-chat
