SRF005

[russbow]

I am sorry, I seem to still have a problem with pin numbering.

I am now playing ith the SRF 005. I understand the trgger out on (output) pin 6, but cannot figure out hoe to resd the returning signal.

I am using this code, ripped off the SRF data sheet :-

symbol trig = 3 ‘ Define output pin for Trigger pulse
symbol echo = 6 ‘ Define input pin for Echo pulse
symbol range = w1 ‘ 16 bit word variable for range
main:
pulsout trig,2 ‘ produce 20uS trigger pulse (must be minimum of 10uS)
pulsin echo,1,range ‘ measures the range in 10uS steps
pause 10 ‘ recharge period after ranging completes
‘ now convert range to cm (divide by 5.8) or inches (divide by 14.8)
‘ as picaxe cannot use 5.8, multiply by 10 then divide by 58 instead
let range = range * 10 / 58 ‘ multiply by 10 then divide by 58
debug range ‘ display range via debug command
goto main ‘ and around forever

When I run the simulator, output pin 3 ( physical leg 24 ) flashes as does the TXD (physical 7)

I cant equate the TXD with echo=6 'define input pin above. Should I be using an ADC input or input 6 ( physical 17) By the way, 28x1 chip

thanks, Russ

 

[eclectic]

@russbow

First, print out the picture, from Manual 1 page 28.

Then perhaps silly, but ...

The Picaxeopod has 28 legs, outside, which you can see and touch.
But, you can't see the Points INSide.
or
Parts INSide.

And yes, if you follow the SRF005 program,
it's input PIN 6 which is inside LEG 17.

(and you cannot simulate the SRF005 input :-( )

e

 

[russbow]

Gentlemen, thank you. Now all sorted.I am beginning to find my way through the maze. Found searching the threads most useful. I was using the ula array (wrong) and found the SERTXD command (brill). So of to generate the next problem.

R.