 | | Re: Using NXT Port 4 EIA-485 —Ralph Hempel
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| | | (...) Christian, There is currently no direct support for this in pbLua, but it's not too hard to add. The HighSpeed port is port 4, and it has basically 3 wires that control how it works. PA4/5 are the RX and TX to UART0 right on the ARM PA7 is RTS (...) (18 years ago, 16-Apr-07, to lugnet.robotics.nxt)
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| | | | | Re: Using NXT Port 4 EIA-485 —Christian Mock
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| | | | (...) Ralph, I'm using an ATMega8 as frontend processor between NXT and SD-Card. Step1: NXT===>I2C===>ATMega...==>SD-Card Disadvantage: Very low speed (9600) Step2: NXT===>EIA-485===>AT...==>SD-Card This should work in an easy way, FAT-Support for (...) (18 years ago, 17-Apr-07, to lugnet.robotics.nxt)
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| | | | | | Re: Using NXT Port 4 EIA-485 —Ralph Hempel
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| | | | (...) Great idea Christian! What kind of API do you need to make this work? I think these might get things started: nxt.RS485SetParam( speed, parity, databits, stopbits ) nxt.RS485SendData( string, bytes ) string = nxt.RS485GetData( bytes ) status = (...) (18 years ago, 17-Apr-07, to lugnet.robotics.nxt)
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| | | | | | Re: Using NXT Port 4 EIA-485 —Christian Mock
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| | | | ReHi Ralph, (...) I'd like to have some address information for device number added (can be done at a higher layer ?)... EIA-485-Hardwareconcept allows to handle more than one target :D ID0: Master (NXT) ID1: SD ID2: Camera :D ... (...) I hope we (...) (18 years ago, 17-Apr-07, to lugnet.robotics.nxt)
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