I use Orange Pi zero as home print server. It works for few months for now and I am very pleased with that. Although, my printer falls into deep sleep after printing (it's Brother HL-1110EW) and cannot be woken up by the server. I have to start printer manually to print next printouts. Thus I wanted to install tea4cups to drive a relay turning the printer on and off when needed.
I installed the WiringOP-zero (from here: https://github.com/xpertsavenue/WiringOP-Zero) but then strange things become to happen. I connected temporarily a LED diode to indicate the changes of the GPIO. (GPIO-7 and GND). The LED is on all the time, no matter what command I send.
Even if "gpio readall" shows "0" state on GPIO-7 the led still is on.
But also without success. That means gpio readall still shows changes in the table but there are no physical changes on the pin (the voltage still is on).
Then I thought that maybe there is no kernel module loaded, but I can see that w1-gpio is loaded:
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scaevola
Hi there.
I use Orange Pi zero as home print server. It works for few months for now and I am very pleased with that. Although, my printer falls into deep sleep after printing (it's Brother HL-1110EW) and cannot be woken up by the server. I have to start printer manually to print next printouts. Thus I wanted to install tea4cups to drive a relay turning the printer on and off when needed.
I installed the WiringOP-zero (from here: https://github.com/xpertsavenue/WiringOP-Zero) but then strange things become to happen. I connected temporarily a LED diode to indicate the changes of the GPIO. (GPIO-7 and GND). The LED is on all the time, no matter what command I send.
Even if "gpio readall" shows "0" state on GPIO-7 the led still is on.
I tried to push the values through "echo":
But also without success. That means gpio readall still shows changes in the table but there are no physical changes on the pin (the voltage still is on).
Then I thought that maybe there is no kernel module loaded, but I can see that w1-gpio is loaded:
lsmod Module Size Used by aes_arm_bs 20480 2 crypto_simd 16384 1 aes_arm_bs ccm 20480 6 xradio_wlan 110592 1 mac80211 532480 1 xradio_wlan sun4i_gpadc_iio 16384 0 cfg80211 491520 2 mac80211,xradio_wlan industrialio 53248 1 sun4i_gpadc_iio zram 24576 2 sun8i_thermal 16384 0 sunxi_cedrus 32768 0 rfkill 20480 3 cfg80211 libarc4 16384 1 mac80211 v4l2_mem2mem 20480 1 sunxi_cedrus videobuf2_dma_contig 20480 1 sunxi_cedrus videobuf2_memops 20480 1 videobuf2_dma_contig videobuf2_v4l2 20480 2 sunxi_cedrus,v4l2_mem2mem videobuf2_common 40960 3 sunxi_cedrus,v4l2_mem2mem,videobuf2_v4l2 w1_gpio 16384 0 wire 32768 1 w1_gpio cn 16384 1 wire uio_pdrv_genirq 20480 0 uio 16384 1 uio_pdrv_genirq cpufreq_dt 20480 0 usb_f_acm 20480 1 u_serial 24576 3 usb_f_acm g_serial 16384 0 libcomposite 45056 2 g_serial,usb_f_acm ip_tables 24576 0 x_tables 24576 1 ip_tables autofs4 36864 2 pwrseq_simple 16384 1 sunxi 16384 0 phy_generic 20480 2 sunxi
Then I started to read forums, including this one. Still no clue what is happening, I did not find any similar case.
I run out of ideas -maybe anyone would have some?
Oh, I forgot one thing that may be interesting - driving onboard red led actually works. (gpio 30)
EDIT:
I changed the driving pin for pin9 and it works fine. Pin 7 is damaged or anything? Dunno.
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