Flexiforce sensor- output to terminal issue

beckerwv · 2012-07-15 10:52

Hi All,

I am a bit new here and am hoping I can get some help reading the Flexiforce sensor. I am trying to output to the Propeller serial terminal and getting either garbage or '0' every time.
I am using the Propeller Board of Education (BOE) and have it set up like this:

flexiforce.sample2.spin
The code in Flexiforce_Simple2 displays this output:

¬±µµ¬±µµ¬µµµ¨µµµ¬µµ±¬±µµ¨±µµ¬±µµ¨±µµ¬±µµ¬
µµµ¬±µ±¬±µµ¬±µ±¬±µµ¬±µ±¬±µ±¬µµµ¬±µ±¨±µµ¨±µ
µ¬±µµ¨±µµ¬µµµ¬±µµ¬±µµ¬µµµ¬±µµ¨±µµ¬µµµ¬±µ±
¬±µµ¬±µµ¨±µ±¬±µµ

Flexiforce_test.spin
The code in Flexiforce_test displays this output:

TESTING
TIME = 0
TIME = 0
TIME = 0
TIME = 0

I am expecting some sort of number to be displayed. The harder I press the sensor the faster the lines of data are displayed.

I guess I am just missing something simple.

Thanks for any help you can give!

Mike Green · 2012-07-15 11:09

In flexiforce.sample.spin, you have to have definitions for XINFREQ and CLKMODE as follows:

CON
XINFREQ = 5_000_000
CLKMODE = XTAL1 + PLL16X

These tell the program what the crystal speed is and how fast you want the system clock to be (80_000_000 is standard ... 5MHz x 16). The default is to use the built in RCFAST clock which is not accurate enough to transmit data to a PC.

In both programs, you're not calling RCTIME properly. do: RCT.RCTIME( pin, 1, @RCTIMEValueAddress)

beckerwv · 2012-07-15 12:03

Mike,
That worked!! Thank you so much!!!

Flexiforce sensor- output to terminal issue

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