urf to erf issue

[jinx]

hi,
well I finally got the urf erf modules, am attempting to program the a 14m2 with a simple blink program. but am failing miserable, the urf plugged in on com port 9 that's appears fine I see a blinking red led, back on the erf I see the red "heart beat" led blinking even the green led on the bread board will blink. Yet I cant program 14m2. I've moved the breadboard away from the urf too at leashed a metre but know joy. anyone got any ideas where am going wrong.
thx jinx

 

[PaulRB]

Jinx, I don't see a 0.1uF decoupling cap near the picaxe power pins. Worth a try...

Does it program ok if you use the serial cable?

Paul

 

[jinx]

hi,
yea Paul it load the program via the serial cable, made slight alteration to the breadboard added a 10k resistor on cts pin as well the jumper and the separate power line. set the urf on com9 but still no joy programming the picaxe .yet in the config wizard >info does appear to read and write from the erf.

 

[PaulRB]

I don't see any difference, jinx, did you post the same pic again by mistake?

 

[jinx]

hi,
my apologies Paul it was the wrong pic, altered now, well I spent most off the day on this without success read every thread I found, stripped the breadboard down, moved the setup on another part off the board doubled checked everything used a piece of test code from hippy I found

 #picaxe 14m2
 #terminal 4800
 do
 serrxd b0
 sertxd( "Got ", b0, cr, lf )
 loop

worked with the serial cable, but still not with urf/erf combo.

the current setup with a switch on the picaxe power line to reset when needed, I've tried on two machines( laptop) to date. what ever my mistake is am doing it both.

 

[PaulRB]

Or something is faulty...

Have you tried connecting 2 more leds (+ series resistors) to the serout and serin pins of the picaxe to prove there is activity on either pin? (You said the green dtr led shows activity). With these leds in place, try the serial cable again to prove the leds are working.

Paul

 

[jinx]

hi,
nifty idea which I did they blinked with the serial cable but no such luck with erf, technical you have any ideas, while I read the manual again, was expecting these to work out off the box as they say.

 

[hippy]

To check URF and ERF communications; wire up the ERF +V and 0V, connect CTS to 0V, and link the ERF TX and RX pins.

With URF and ERF powered-up, the heartbeat LED's should flash on both.

With the URF COM port selected, Programming Editor Terminal should echo anything entered into the Output Buffer into the Input Buffer when the Send button is pressed.

 

[jinx]

hi,
hippy not seeing anything in the input buffer, and that's on both machines (lappy)

 

[hippy]

hi,
hippy not seeing anything in the input buffer, and that's on both machines (lappy)

Are both heart beat LED's flashing ? If you wire-up the ERF DTR LED what does that do ?

Have you tried changing baud rate in Terminal ? Does the ERF DTR LED Flash when baud rate is changed ? When data is sent ?

You could try running the ERF Configuration Wizard to ensure configuration of the ERF is correct.

 

[jinx]

both the heart beat led are flashing, erf dtr blinks briefly when power applied nothing after that's, till I turn the picaxe off then it blinks. I,ve tried changing baudrates( close/open terminal window each time, the erf config windows doesn't show the pins b.0 or c.5.

 

[hippy]

both the heart beat led are flashing, erf dtr blinks briefly when power applied nothing after that's, till I turn the picaxe off then it blinks.

Not quite sure I understand how you have things setup or what turning the PICAXE off means. For the loopback test the PICAXE is not used, should not be connected. Connect the ERF module TX and RX together, no other connections to TX or RX.

the erf config windows doesn't show the pins b.0 or c.5.

The ERF module has to be wired to pins which the PICAXE can use to configure the module. You will have to rewire to enable configuration.

 

[jinx]

Not quite sure I understand how you have things setup or what turning the PICAXE off means

got a switch on the 14m2 power pin
should I have to do a hard reset, means I don't have to cut power the erf if needed.

Connect the ERF module TX and RX together, no other connections to TX or RX

yea did that this morning no joy seeing anything in the terminal window either.


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