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  1. I am trying to use a Waveshare e-Paper (2.9") with an Orange Pi Zero LTS. To enable the SPI interface, I have added this to /boot/armbianEnv.txt: overlays=spi-add-cs1 spi-spidev param_spidev_spi_bus=1 param_spidev_max_freq=10000000 and installed WiringPI from Github. The e-Paper module is connected to the following GPIO pins: VCC: 3.3V GND: GND DIN: 19(phys)/11(wPi) CLK: 23(phys)/14(wPi) CS: 24(phys)/15(wPi) DC: 22(phys)/13(wPi) RST: 3(phys)/0(wPi) BUSY: 5(phys)/1(wPi) I have checked the connections by using the gpio command line tool to set all 6 ports above to low and to high,