ldiaz

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  1. Hi, I notice the same problem in a Orange PI ZERO. SCLK is high when CS is asserted but as you say it should be LOW before CS is asserted. I have found no solution for this issue. The very strange thing is that on the OPI ZERO it happens only on the second CS line. I'm using the same RF24 code so the problem is not in the library. It should be in the spidev driver. In the Opi Zero I use the SPI1 instead the SPI0. Using spi-spidev and spi-add-cs1 overlays. If plug the radio to /dev/spidev1.0 it works fine without problems but if I change the radio to /dev/spidev1.1 the logic analyzer shows the same SCLK problem. I do not know why but there something wrong here. Try to change SPI interface or the CS you are connecting the radio. This could be workarround. Maybe @martinayotte or @zador.blood.stained hav more information on the SPIDEV implementation as I have seen in the past that they have deep knowledge on that. Regards,
  2. Hi, @glow I have not test any pygame in the zero as I use kivy that requires X windows for working on armbian so here I can't be very useful. As @A-P is interested in make also touch working a was able also to do it in the past with a Orange Pi Zero with XPT2046. This are the steps. You need to be sure that you have the module module for ADS7846 available in your build. If I remenber well its installed by default. Add to your armbianEnv.txt another std overaly it is call spi-add-cs1. This will add an adtional line for CS of the toch screen in the pin 26 that is what is compatible with your screen (TP_CS). Need to compile the dts I provided but for your screen you nee to change "PA7" to "PA1" in the ads7846_pins section of the file. The compilation is done with a DTC compiler (I think is installed by default). this way: ./dtc -@ -I dts -O dtb -o /boot/overlay-user/ads7846-touch.dtbo touch.dts # it will show some warnings. if dct is not available you can get an complie it by: #git clone -b dt-overlays8 https://github.com/pantoniou/dtc #sudo apt-get install -y flex bison #cd dtc #make Finally you need to add to you armbianEnv.txt this line: user_overlays= ads7846-touch Reboot. The dts has the possibility to tweak parameters for sensibility, dimension,etc.... This version is the default ported from raspberry Pi. Thats it!
  3. @A-P if you connect the screen to the PIZero as a Hat it sure SPI1 as SPI pins are those of this interface. SP1 CS=0. Also DC, RST/DC seems correctly mapped. The relevant part of the dmsg is this: [ 308.268459] fbtft: module is from the staging directory, the quality is unknown, you have been warned. [ 308.281149] fbtft_device: module is from the staging directory, the quality is unknown, you have been warned. [ 308.284168] m25p80 spi0.0: spi-nor spi0.0 10000kHz 8 bits mode=0x00 [ 308.284388] fbtft_device: spi_busnum_to_master(1) returned NULL [ 308.291574] fbtft_device: failed to register SPI device [ 418.056146] fbtft_device: module is from the staging directory, the quality is unknown, you have been warned. [ 418.058972] m25p80 spi0.0: spi-nor spi0.0 10000kHz 8 bits mode=0x00 [ 418.059177] fbtft_device: spi_busnum_to_master(1) returned NULL [ 418.066383] fbtft_device: failed to register SPI device it seems the spi_busnum=1 is not activated / registered as present. This, in principle, could be accomplished by inserting this in the armbianEnv.txt overlays=spi-spidev param_spidev_spi_bus=1 As regards current location of drivers mine are here: root@orangepizero:~# ls /lib/modules/4.11.5-sun8i/kernel/drivers/staging/fbtft/ fb_agm1264k-fl.ko fb_hx8347d.ko fb_ili9163.ko fb_ili9340.ko fb_ili9486.ko fb_s6d02a1.ko fb_ssd1306.ko fb_st7735r.ko fb_tls8204.ko fb_upd161704.ko fbtft_device.ko fb_bd663474.ko fb_hx8353d.ko fb_ili9320.ko fb_ili9341.ko fb_pcd8544.ko fb_s6d1121.ko fb_ssd1331.ko fb_st7789v.ko fb_uc1611.ko fb_watterott.ko flexfb.ko fb_hx8340bn.ko fb_hx8357d.ko fb_ili9325.ko fb_ili9481.ko fb_ra8875.ko fb_ssd1289.ko fb_ssd1351.ko fb_tinylcd.ko fb_uc1701.ko fbtft.ko But I'm using 4.11 kernel version. It should not be relevant if the module system is propperly configured. Hope It can be useful
  4. @A-P Honestly I have not tested the ili9486 you are using but the li9341 that @glow is ussing. However they should work both. I think the best way to trouble shoot this is: 1. Could you share your screan pinout and wiring to the OpiZero? 2. Could you share dmesg after modprobe of the driver? 3. what is on your armbianEnv.txt? Regards,
  5. This was my original proposal to use an overlay I posted one initial version that I wan't able to make work but I'm not a DTS expert maybe someone can simply aling it with the patch that @martinayotte created.
  6. overlay is nothing special is only hardware definition SPI o IC2 have not hw discovery mechanims. Try spi-dev overlay without loading the driver and check if spi1 devices are created. My wiring is the following: display ZERO GPIOS VCC - 3.3 V pin 1 GND - GND pin 25 (any GND would do as they internaly connected) CS - SPI1 CS0 pin 24 RESET - GPIO1 pin 11 DC - GPIO0 pin 13 MOSI - SPI1 MOSI pin 19 SCK - SPI1 SCLK pin 23 LED - GPIO3 pin 15 MISO - SPI1 MISO pin 21 SPI port are fixed pins, you must configure only DC/RESET/LED according to your wiring. name=fb_ili9341 gpios=dc:0,led:3,reset:1 speed=16000000 busnum=1 rotate=0 bgr=1
  7. @glow. Mine has a spi flash. But the fact is that H2+ gpios for SPI0 are not accesible in the GPIO header, so in any case you need to connect the display to the SPI1 not the 0. As you have done here: Try the overlay spi-dev with busnum=1 as I commented in my previus post. Then try to load the driver for the display with modprobe.
  8. @A-P There is no more detail in dmesg about the error? It's very strange that @glow solution to busnum=0 works as OPIZERO has no pins to connect to SPI0 bus in the GPIO header. Check this: Busnum=1 will use the pins for SPI1: SPI1_CLK,SPI1_MISO,SPI_MOSI and SPI1_CS. For other needed pins (this will depend on the screen) you need to select the GPIOS manually. Be aware of the mapping: Check your wiring to verify it is correct with fbtft parameters. What errors are shown in dmesg? For checking that thet SPI1 works well you can use the spi-dev overlay simply puting this in /boot/armbianEnv.txt: overlays= <other overlays> spi-spidev param_spidev_spi_bus=1 after reboot /dev/spi* files should be present.
  9. I confirm that raschid patch worked also for me. It include botth DTS mods for opizero and the patched driver for 4.11. May thanks for the success. I will some perfomance test also. As regards distance to AP I think this could be improved with a better antenna. The one that come with the zero seems really low quality,
  10. That would be even better. do you think @martinayotte will be able to do it from his private build?
  11. Yes that would cover points 1,2,3 of my proposal. Would it be possible to implement the 4 point (DTS part) with an overlay?
  12. That's great news at least this solution will be a solution from some users. The driver is crapy but at least permit transmitting wireless which is a must in some applications. I understand to not include the solution in standard images. There is , however, the option to include as an option in the build tool for those that assume the risk of this crashy driver. As far as I understood to make it work it is needed to do following steps: build with newest patches that solve (aes-arm) crashes. Use correct fifteenhex' driver compatible with 4.11. I think this can be done changing the current add-xradio-wireless-driver.patch.disabled with the correct version. Still if it is remain as disabled it could be enabled manually by the user and compile the correct version. Use XRADIO_* kernel settings to activate the configuration and compilation. By default they can be commented (unset) but the user can remove the contents and get the driver compiled installed in custom builds. Provide a suitable DTS that inform the kernel that the xr819 is present with valid params. Current build system do not do configure it. Can this be done with an overlay? If yes then it can be included in the overlay section of the build script so it get compiled and can be activated by the user in armbianEnv.txt. If this approach is possible we can find a compromise between not supporting the driver in standard images but easy for custom compilation activation. What do you think? Regards,
  13. The fbtft is included in main-line build you don't need to download or install anything else. As you say the once ftft_device is activated if wiring is correct the screen works with out problem in /dev/fb0. X windows also works with out problem. For touch screen you need to load the overlay I posted.
  14. Hi Im using main-line/dev version not legacy. The GPIO are those of the SPI1 interface + some extra for additional signals required. in my case gpios=dc:0,led:3,reset:1. For display only its not needed to install any overlay only notro's fbtft. In case that what to use the touch screen then you need to use a device tree overlay using with spidev and spi-add-cs1 overlays. (attached my version) For touch you need and additional CS GPIO defined in spi-add-cs1 and one more for IRQ from the touch screen. I picked "PA7". regards, touch.dts