i have Hummingboard 1 with mainline kernel 4.11.6.
And i have problem with GPIOs, after exporting GPIO 72 (also i try 73,71,1 / pin 11,13,7), set direction to OUT and value to 0 i have still 3.3V on pin 12 (11,13,7...).
Also try 72 as OUT value 1 and 73 as IN ... and short this pins 11-12 by wire.
gpiochip2: GPIOs 64-95, parent: platform/20a4000.gpio, 20a4000.gpio:
gpio-68 ( |PCIe reset ) out hi
gpio-69 ( |gpio-ir-recv ) in hi
gpio-72 ( |sysfs ) out hi
gpio-73 ( |sysfs ) in lo
gpio-83 ( |brcm_reg ) out lo
gpio-86 ( |usb_otg_vbus ) out lo
73 read as LOW.
Also i try wiringX and test app "wiringx-read 1 0":
running on a hummingboard
Writing to GPIO 1: High
Reading from GPIO 0: 0
Writing to GPIO 1: Low
Reading from GPIO 0: 0
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Quadrifoglio Verde
Hello,
i have Hummingboard 1 with mainline kernel 4.11.6.
And i have problem with GPIOs, after exporting GPIO 72 (also i try 73,71,1 / pin 11,13,7), set direction to OUT and value to 0 i have still 3.3V on pin 12 (11,13,7...).
Also try 72 as OUT value 1 and 73 as IN ... and short this pins 11-12 by wire.
gpiochip2: GPIOs 64-95, parent: platform/20a4000.gpio, 20a4000.gpio: gpio-68 ( |PCIe reset ) out hi gpio-69 ( |gpio-ir-recv ) in hi gpio-72 ( |sysfs ) out hi gpio-73 ( |sysfs ) in lo gpio-83 ( |brcm_reg ) out lo gpio-86 ( |usb_otg_vbus ) out lo
73 read as LOW.
Also i try wiringX and test app "wiringx-read 1 0":
running on a hummingboard Writing to GPIO 1: High Reading from GPIO 0: 0 Writing to GPIO 1: Low Reading from GPIO 0: 0
please help me :-)
thanks.
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