Re: [Flashforth-devel] UART delay for TeraTerm, CoolTerm
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From: om1zz <om...@vo...> - 2015-05-19 20:45:08
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>I have been using hardware handshake, with NO delay. I use a >USB-to-serial adapter using the FTDI chipset, which seems to get the >handshake right. The TeraTerm macro (in my today's post) works with zero uart transmit delays and with no flow control set in TT serial setting. I am using an obsolate CA-42 ArkMicro based usb dongle under XP (as there is none x64 driver for 7) wired w/ rx/tx/gnd only. The handshake is done via \n sent by FF. I set FF rx/tx buffers to 511. Works fine here at 921k with dspic33 @40MHz. As I am a big fan of wireless I use normally HC-05 BTooth dongles with all my dev boards. The issue with these cheap BT dongles is they do not propagate cts/rts so hw handshake cannot be used.. Thus a good working sw handshake would come in handy :) I've ebayed today 2xftdi232rl 1xPL2303TA 1xCP2102 usb serial dongles to play with (hopefully they all will work with 7-8 x64). Also I want to investigate whether the Xon/Xoff problem comes from the usb dongles or from Teraterm itself, as I can see in the TT's log the FF sends the XOFF from time to time.. Igor |