Hello,
Since I'm less than a noob in linux, can anyone please help me with the commands that I need to execute the following instructions?
Thanks in advance.
Instructions:
1. Install the dtb file meson-gxl-s905w-tx3-mini-vfd.dtb.gz and boot your tx3 box with this file. (This assumes that you boot from SD/USB so that you don't risk bricking your box.)
2. Download the vfd code (module and daemon) tarball vfdd-20181209.tar.xz from a link at the bottom of the page http://www.rvq.fr/linux/tanix-vfd.php and unpack it someplace on your tx3 box.
3. Build the vfd module (natively): Install the *.deb package from Balbes/Armbian with linux kernel headers for the kernel you are running. Then, copy the contents of vfdd-20181209/vfdmod/vfdmod/ to some place in the kernel headers tree, say drivers/vfd Go to drivers/vfd and write up a Makefile somewhat like this;
KERNEL_SOURCE := /usr/src/linux-headers-4.19.7-aml-s9xxx
PWD := $(shell pwd)
default:
${MAKE} -C ${KERNEL_SOURCE} M=${PWD} modules
clean:
${MAKE} -C ${KERNEL_SOURCE} M=${PWD} clean
Run 'make' and build the module vfdmod.ko
4. Check that the module loads: insmod vfdmod.ko
5. Build the daemon vfdd: Go to the directory vfdd-20181209/ and run make. The daemon executable vfdd should emerge. After inspection/editing of the Makefile in vfdd-20181209/ (e.g. BINDIR, ETCDIR) you can run 'make install' to copy the the daemon executable and configuration file to their proper locations (or do this manually).
6. Test the daemon: Check the vfd conf file (default /etc/vfd.conf) and edit according to taste, or leave as-is. Start the daemon with recipe as in vfdd-20181209/vfdd.runit.in If everything is OK some nice little numbers and symbols should now emerge on the front LED display of your tx3 box.
Note:
The dtb file meson-gxl-s905w-tx3-mini-vfd.dtb (md5sum is fe846c5c3c7903b15c0725c2bd289fe5) is an augmentation of the Balbes/Armbian file meson-gxl-s905w-tx3-mini.dtb where the following definition has been added/compiled in (method; hack to Balbes' Armbian cross compile build environment) to support vfd (as per recipe in vfdd-20181209):
meson-vfd {
compatible = "amlogic,aml_vfd";
dev_name = "meson-vfd";
status = "okay";
gpios = <&gpio_ao GPIOAO_4 GPIO_ACTIVE_HIGH>, /* STB */
<&gpio GPIODV_27 GPIO_ACTIVE_HIGH>, /* CLK */
<&gpio GPIODV_26 GPIO_ACTIVE_HIGH>; /* DI/DO */
};
(A dtb file can easily be decompiled and inspected by decompiling it with dtc, the device tree compiler.)
