On Wed, Sep 16, 2020 at 8:33 AM Pavel Yermolenko <py.oh...@sunrise.ch> wrote:
>
> Hello,
>
> I modified bone script pwm.js from Derek Molloy book, adapting pin for BBB
> (in bold):
>
> var b = require('bonescript');
> var pin = "P9_21"; // Use P1.08 or P1.36 by default on PocketBeagle
> var dutyCycle = 0.75;
> var frequency = 10000;
>
> b.pinMode(pin, b.OUTPUT);
> b.getPinMode(pin, printPinMux);
> b.analogWrite(pin, dutyCycle, frequency, display);
>
> function printPinMux(val){
> console.log('mux = '+val.mux);
> console.log('name = '+val.name);
> }
>
> function display(val){
> console.log(val);
> }
>
> Doesn't work:
>
> debian@beaglebone:~/exploringbb/chp06/bone$ sudo nodejs pwm.js
> error: error updating PWM freq and value:
> /sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/pwm-1:1,
> Error: EINVAL: invalid argument, write
> { err:
> 'error updating PWM freq and value:
> /sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/pwm-1:1,
> Error: EINVAL: invalid argument, write' }
> warning: single argument callbacks will be deprecated.please use node-style
> error-first callbacks: callback(err,response)
> mux = undefined
> name = UART2_TXD
>
> Any suggestions ?
bonescript is being scrapped, use adafruit-beaglebone-io-python...
https://github.com/adafruit/adafruit-beaglebone-io-python
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
For more options, visit http://beagleboard.org/discuss
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