Re: [PD] Arduino+firmata - digital input (pull-up) - for Hans
On Apr 26, 2007, at 9:45 AM, João Miguel Pais wrote: Hello Hans and list, we're in the workshop with Sukandar in Berlin, and something strange just happened. My arduino isn't the newest, it has with the ATMEGA8 chip (the one we got in Zürich some time ago). I've put the latest firmata into it, and the analogue stuff worked quite well. While doing some digital inputting (just simple switches) a few things happen: - the inputs/outputs don't match: if the switch is connected in the input 2, it comes out from 5 (the same to all other inputs, although I didn't mapped them). But consequently, if I switch the input 2 off, the output 5 switches off. This doesn't happen on other participants who have the newest arduino board. - someone here mentioned that the arduino has its own pull-up resistors. but in the firmware they're switched off, and we found no possibility to switch it in the arduino-test patch. so we must build our own pull-up resistors in the circuit, outside. is it possible with this firmata to activate the pull-up resistor in arduino from the pd patch? if not, do you think you're going to implement it? or could you tell just quickly how enable it? Hmm, I am still mostly working with the ATMEGA8 boards. I am unaware of a way to disable or enable pull-up resistors in the ATMEGA8/ Arduino. If such is a thing is a possibility, I would happily add it to the Firmata firmware. Do you have any docs on how to do this? Have you tried the Arduino forums? .hc Thanks, João Miguel Pais -- Friedenstr. 58 10249 Berlin Deutschland Tel +49 30 42020091 Mob +49 162 6843570 [EMAIL PROTECTED] skype: jmmmpjmmmp http://www.puredata.org/Members/jmmmp IBM Thinkpad R51, XP, Pd-Ext-0.39-2-t5 ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/ listinfo/pd-list Using ReBirth is like trying to play an 808 with a long stick.- David Zicarelli ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
Re: [PD] Arduino+firmata - digital input (pull-up) - for Hans
Hans-Christoph Steiner wrote: On Apr 26, 2007, at 9:45 AM, João Miguel Pais wrote: Hello Hans and list, we're in the workshop with Sukandar in Berlin, and something strange just happened. My arduino isn't the newest, it has with the ATMEGA8 chip (the one we got in Zürich some time ago). I've put the latest firmata into it, and the analogue stuff worked quite well. While doing some digital inputting (just simple switches) a few things happen: - the inputs/outputs don't match: if the switch is connected in the input 2, it comes out from 5 (the same to all other inputs, although I didn't mapped them). But consequently, if I switch the input 2 off, the output 5 switches off. This doesn't happen on other participants who have the newest arduino board. - someone here mentioned that the arduino has its own pull-up resistors. but in the firmware they're switched off, and we found no possibility to switch it in the arduino-test patch. so we must build our own pull-up resistors in the circuit, outside. is it possible with this firmata to activate the pull-up resistor in arduino from the pd patch? if not, do you think you're going to implement it? or could you tell just quickly how enable it? Hmm, I am still mostly working with the ATMEGA8 boards. I am unaware of a way to disable or enable pull-up resistors in the ATMEGA8/ Arduino. If such is a thing is a possibility, I would happily add it to the Firmata firmware. In the atmega8, you activate the pull-up by writing a one to the port pin, as long as that pin is in input mode, and the PUD bit in SFIOR hasn't been set. It has no bearing on the bit-scrambling, that sounds like an endian issue between versions of pduino code. Martin ___ PD-list@iem.at mailing list UNSUBSCRIBE and account-management - http://lists.puredata.info/listinfo/pd-list
