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Description
I am trying to control LED strips (WS281X) using the GPIO interface on a Colibri iMX7 (see data sheet in the attachments or the link).
As far as I understood, I would need to create GpioDeviceFactoryInterface
? How would I go about that?
The Colibri device also have PWM pins if that is easier.
colibri_arm_som_imx7_datasheet.pdf
import com.diozero.devices.LED;
public class LEDTest {
public static void main(String[] args) {
try (LED led = new LED(1)) {
led.on();
}
}
}
has the output:
WARN com.diozero.sbc.LocalSystemInfo.populateFromLsCpu - Error with lscpu command: Cannot run program "lscpu": error=2, No such file or directory
ERROR bridge.LEDTest.main - com.diozero.api.NoSuchDeviceException: No such GPIO #1
at com.diozero.sbc.BoardPinInfo.lambda$getByGpioNumberOrThrow$0(BoardPinInfo.java:239)
at java.base/java.util.Optional.orElseThrow(Optional.java:403)
at com.diozero.sbc.BoardPinInfo.getByGpioNumberOrThrow(BoardPinInfo.java:239)
at com.diozero.api.DigitalOutputDevice.<init>(DigitalOutputDevice.java:142)
at com.diozero.api.DigitalOutputDevice.<init>(DigitalOutputDevice.java:129)
at com.diozero.api.DigitalOutputDevice.<init>(DigitalOutputDevice.java:118)
at com.diozero.devices.LED.<init>(LED.java:82)
at bridge.LEDTest.main(LEDTest.java:14)
Executing:
NativeDeviceFactoryInterface x = DeviceFactoryHelper.getNativeDeviceFactory();
Logger.info(x.getBoardPinInfo().getGpioPins());
has the output:
INFO bridge.LEDTest.main - []
$ gpioinfo
gpiochip0 - 32 lines:
line 0: "SODIMM_43" "cd" input active-low [used]
line 1: "SODIMM_45" "Wake-Up" input active-high [used pull-down]
line 2: "SODIMM_135" unused input active-high
line 3: "SODIMM_22" unused input active-high
line 4: unnamed "scl" output active-high [used open-drain]
line 5: unnamed "sda" input active-high [used open-drain]
line 6: "SODIMM_37" unused input active-high
line 7: "SODIMM_29" unused input active-high
line 8: "SODIMM_59" unused input active-high
line 9: "SODIMM_28" unused input active-high
line 10: "SODIMM_30" unused input active-high
line 11: "SODIMM_67" unused input active-high
line 12: unnamed unused input active-high
line 13: unnamed unused input active-high
line 14: "SODIMM_188" unused input active-high
line 15: "SODIMM_178" unused input active-high
line 16: unnamed unused input active-high
line 17: unnamed unused input active-high
line 18: unnamed unused input active-high
line 19: unnamed unused input active-high
line 20: unnamed unused input active-high
line 21: unnamed unused input active-high
line 22: unnamed unused input active-high
line 23: unnamed unused input active-high
line 24: unnamed unused input active-high
line 25: unnamed unused input active-high
line 26: unnamed unused input active-high
line 27: unnamed unused input active-high
line 28: unnamed unused input active-high
line 29: unnamed unused input active-high
line 30: unnamed unused input active-high
line 31: unnamed unused input active-high
gpiochip1 - 32 lines:
line 0: "SODIMM_111" unused input active-high
line 1: "SODIMM_113" unused input active-high
line 2: "SODIMM_115" unused input active-high
line 3: "SODIMM_117" unused input active-high
line 4: "SODIMM_119" unused input active-high
line 5: "SODIMM_121" unused input active-high
line 6: "SODIMM_123" unused input active-high
line 7: "SODIMM_125" unused input active-high
line 8: "SODIMM_91" unused input active-high
line 9: "SODIMM_89" unused input active-high
line 10: "SODIMM_105" unused input active-high
line 11: "SODIMM_152" unused input active-high
line 12: "SODIMM_150" unused input active-high
line 13: "SODIMM_95" unused input active-high
line 14: "SODIMM_126" unused input active-high
line 15: "SODIMM_107" unused input active-high
line 16: "SODIMM_114" unused input active-high
line 17: "SODIMM_116" unused input active-high
line 18: "SODIMM_118" unused input active-high
line 19: "SODIMM_120" unused input active-high
line 20: "SODIMM_122" unused input active-high
line 21: "SODIMM_124" unused input active-high
line 22: "SODIMM_127" unused input active-high
line 23: "SODIMM_130" unused input active-high
line 24: "SODIMM_132" unused input active-high
line 25: "SODIMM_134" unused input active-high
line 26: "SODIMM_133" unused input active-high
line 27: "SODIMM_104" unused input active-high
line 28: "SODIMM_106" unused input active-high
line 29: "SODIMM_110" unused input active-high
line 30: "SODIMM_112" unused input active-high
line 31: "SODIMM_128" unused input active-high
gpiochip2 - 32 lines:
line 0: "SODIMM_56" unused input active-high
line 1: "SODIMM_44" unused input active-high
line 2: "SODIMM_68" unused input active-high
line 3: "SODIMM_82" unused input active-high
line 4: "SODIMM_93" unused input active-high
line 5: "SODIMM_76" unused input active-high
line 6: "SODIMM_70" unused input active-high
line 7: "SODIMM_60" unused input active-high
line 8: "SODIMM_58" unused input active-high
line 9: "SODIMM_78" unused input active-high
line 10: "SODIMM_72" unused input active-high
line 11: "SODIMM_80" unused input active-high
line 12: "SODIMM_46" unused input active-high
line 13: "SODIMM_62" unused input active-high
line 14: "SODIMM_48" unused input active-high
line 15: "SODIMM_74" unused input active-high
line 16: "SODIMM_50" unused input active-high
line 17: "SODIMM_52" unused input active-high
line 18: "SODIMM_54" unused input active-high
line 19: "SODIMM_66" unused input active-high
line 20: "SODIMM_64" unused input active-high
line 21: "SODIMM_57" unused input active-high
line 22: "SODIMM_61" unused input active-high
line 23: "SODIMM_136" unused input active-high
line 24: "SODIMM_138" unused input active-high
line 25: "SODIMM_140" unused input active-high
line 26: "SODIMM_142" unused input active-high
line 27: "SODIMM_144" unused input active-high
line 28: "SODIMM_146" unused input active-high
line 29: unnamed unused input active-high
line 30: unnamed unused input active-high
line 31: unnamed unused input active-high
gpiochip3 - 32 lines:
line 0: "SODIMM_35" unused input active-high
line 1: "SODIMM_33" unused input active-high
line 2: "SODIMM_38" unused input active-high
line 3: "SODIMM_36" unused input active-high
line 4: "SODIMM_21" unused input active-high
line 5: "SODIMM_19" unused input active-high
line 6: "SODIMM_131" unused input active-high
line 7: "SODIMM_129" "regulator-usbh-vbus" output active-low [used]
line 8: "SODIMM_90" unused input active-high
line 9: "SODIMM_92" unused input active-high
line 10: "SODIMM_88" unused input active-high
line 11: "SODIMM_86" "spi2 CS0" output active-low [used]
line 12: "SODIMM_81" unused input active-high
line 13: "SODIMM_94" unused input active-high
line 14: "SODIMM_96" unused input active-high
line 15: "SODIMM_75" unused input active-high
line 16: "SODIMM_101" unused input active-high
line 17: "SODIMM_103" unused input active-high
line 18: "SODIMM_79" unused input active-high
line 19: "SODIMM_97" unused input active-high
line 20: "SODIMM_67" unused input active-high
line 21: "SODIMM_59" unused input active-high
line 22: "SODIMM_85" unused input active-high
line 23: "SODIMM_65" unused input active-high
line 24: unnamed unused input active-high
line 25: unnamed unused input active-high
line 26: unnamed unused input active-high
line 27: unnamed unused input active-high
line 28: unnamed unused input active-high
line 29: unnamed unused input active-high
line 30: unnamed unused input active-high
line 31: unnamed unused input active-high
gpiochip4 - 32 lines:
line 0: "SODIMM_69" unused input active-high
line 1: "SODIMM_71" "enable" output active-high [used]
line 2: "SODIMM_73" unused input active-high
line 3: "SODIMM_47" unused input active-high
line 4: "SODIMM_190" unused input active-high
line 5: "SODIMM_192" unused input active-high
line 6: "SODIMM_49" unused input active-high
line 7: "SODIMM_51" unused input active-high
line 8: "SODIMM_53" unused input active-high
line 9: unnamed unused input active-high
line 10: unnamed unused input active-high
line 11: "SODIMM_98" unused output active-high
line 12: "SODIMM_184" unused input active-high
line 13: "SODIMM_186" unused input active-high
line 14: "SODIMM_23" unused input active-high
line 15: "SODIMM_31" unused input active-high
line 16: "SODIMM_100" unused input active-high
line 17: "SODIMM_102" unused input active-high
line 18: unnamed unused input active-high
line 19: unnamed unused input active-high
line 20: unnamed unused input active-high
line 21: unnamed unused input active-high
line 22: unnamed unused input active-high
line 23: unnamed unused input active-high
line 24: unnamed unused input active-high
line 25: unnamed unused input active-high
line 26: unnamed unused input active-high
line 27: unnamed unused input active-high
line 28: unnamed unused input active-high
line 29: unnamed unused input active-high
line 30: unnamed unused input active-high
line 31: unnamed unused input active-high
gpiochip5 - 32 lines:
line 0: unnamed unused input active-high
line 1: unnamed unused input active-high
line 2: unnamed unused input active-high
line 3: unnamed unused input active-high
line 4: unnamed unused input active-high
line 5: unnamed unused input active-high
line 6: unnamed unused input active-high
line 7: unnamed unused input active-high
line 8: unnamed unused input active-high
line 9: unnamed unused input active-high
line 10: unnamed unused input active-high
line 11: unnamed unused output active-high
line 12: "SODIMM_169" unused input active-high
line 13: "SODIMM_157" unused input active-high
line 14: unnamed unused input active-high
line 15: "SODIMM_163" unused input active-high
line 16: "SODIMM_77" unused input active-high
line 17: "SODIMM_24" unused input active-high
line 18: unnamed unused input active-high
line 19: "SODIMM_25" unused input active-high
line 20: "SODIMM_27" unused input active-high
line 21: "SODIMM_32" unused input active-high
line 22: "SODIMM_34" unused input active-high
line 23: unnamed unused input active-high
line 24: unnamed unused input active-high
line 25: unnamed unused input active-high
line 26: unnamed unused input active-high
line 27: unnamed unused input active-high
line 28: unnamed unused input active-high
line 29: unnamed unused input active-high
line 30: unnamed unused input active-high
line 31: unnamed unused input active-high
gpiochip6 - 32 lines:
line 0: unnamed unused input active-high
line 1: unnamed unused input active-high
line 2: "SODIMM_63" unused input active-high
line 3: "SODIMM_55" unused input active-high
line 4: unnamed unused input active-high
line 5: unnamed unused input active-high
line 6: unnamed unused input active-high
line 7: unnamed unused input active-high
line 8: "SODIMM_196" "scl" output active-high [used open-drain]
line 9: "SODIMM_194" "sda" input active-high [used open-drain]
line 10: unnamed unused input active-high
line 11: "SODIMM_99" unused input active-high
line 12: unnamed unused input active-high
line 13: unnamed unused input active-high
line 14: "SODIMM_137" "id" input active-high [used]
line 15: unnamed unused input active-high
line 16: unnamed unused input active-high
line 17: unnamed unused input active-high
line 18: unnamed unused input active-high
line 19: unnamed unused input active-high
line 20: unnamed unused input active-high
line 21: unnamed unused input active-high
line 22: unnamed unused input active-high
line 23: unnamed unused input active-high
line 24: unnamed unused input active-high
line 25: unnamed unused input active-high
line 26: unnamed unused input active-high
line 27: unnamed unused input active-high
line 28: unnamed unused input active-high
line 29: unnamed unused input active-high
line 30: unnamed unused input active-high
line 31: unnamed unused input active-high
Thanks in advance!
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