Tristan, I like the DSO112A very much. The fact that this device can be controlled by a processor/computer makes it even more useful.
I managed to 'communicate' in Python on my MacBookAIr with the DSO112A via USB (using the CP2102 driver that can be downloaded from www.silabs.com <http://www.silabs.com/>). > Are you programming the Mega2560 with AmForth? Yes I do. And I love it! My challenge is to establish that withAm Forth. If successful I want to try to setup the DSO, trigger measurements and download the results. > Some level shifting will be needed/prudent. I can use a CP2102 USB 2.0 to TTL UART module for level shifting N.B. Ali Express is my friend :-) > I have written some > AmForth words which work for me at 9600 > https://www.mostlymostly.uk/post/2019.02.01/ Yes, I have that source too. :-) In that source is stated: \ see section 22 of atmega2560 datasheet for overview \ and table 22.9 in section 22.11 for specific UBBR \ values. #103 UBRR1 ! \ 16MHz 9600 UBBR1 103 I don't have (and can't find) the data sheet that is referred to. Do you have that datasheet? Can I have a copy? (PDF?) > I have just quickly reconfigured them locally for 115200. Simple > typing at a terminal seemed OK. So you managed to initialize uart1 at 115200 BAUD. That is great! Would you be so kind to provide me with the settings for the serial communication @ 115200 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
