Tristan, I found an article about step-down en step-up levelers @ https://hackaday.com/2016/12/05/taking-it-to-another-level-making-3-3v-and-5v-logic-communicate-with-level-shifters/ <https://hackaday.com/2016/12/05/taking-it-to-another-level-making-3-3v-and-5v-logic-communicate-with-level-shifters/>
Fred > Op 15 mrt. 2019, om 01:30 heeft Tristan Williams <h...@tjnw.co.uk> het > volgende geschreven: > > Fred, > > Many thanks. I have a DSO112A so I was interested in what you are > looking to do. > >> One of the connectors is a alternative UART. It is a LVTTL connection. >> I want to connect the Arduino uart1 (TXD1/RXD1) to this connector (J11). > > I think LVTTL is ~3.3V levels rather than the 5V levels of the > Mega2560. Some level shifting will be needed/prudent. > >> The bit stream format for the serial interface is: 115200 baudrate, >> 8 data bits, 1 stop bit, and no parity. This is fixed and can not be >> changed > > Are you programming the Mega2560 with AmForth? > > 115200 is uncharted territory for me and usart1. I have written some > AmForth words which work for me at 9600 > > https://www.mostlymostly.uk/post/2019.02.01/ > > I have just quickly reconfigured them locally for 115200. Simple > typing at a terminal seemed OK. Beyond that, how much data is sent by > the DSO112A, how often, and what you want to do with it will matter, > so it is difficult to know whether it would work well enough or not. > > Tristan > > > > _______________________________________________ > Amforth-devel mailing list for http://amforth.sf.net/ > Amforth-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/amforth-devel _______________________________________________ Amforth-devel mailing list for http://amforth.sf.net/ Amforth-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/amforth-devel
