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    Best posts made by Gunther

    • RE: Solar cell support with non-rechargeable batteries

      @Nca78 Yes, that should have been clear to me by now.

      I just lost some time trying to burn the boot loader as always I got this error:

      avrdude: stk500_getparm(): (a) protocol error
      

      Checked, tested and even redid the soldering to exclude any wiring problems. Turns out adding a cap (0.1 µF in my case) between the programmers GND and RST did the trick.

      Thank you all!

      posted in My Project
      Gunther
      Gunther
    • RE: No communication with NRF24L01 on RPi3 64bit [SOLVED]

      @gunther After fighting with this problem for some days, I now got it working. The solution was to use the BCM driver instead of SPIDEV.

      I achieved that by commenting out the 32 bit gcc flags in ./configure

      function gcc_cpu_flags {
          local soc=$1
          case $soc in
          BCM2835)
              flags="-march=armv6zk -mtune=arm1176jzf-s -mfpu=vfp -mfloat-abi=hard"
              ;;
          BCM2836)
              flags="-march=armv7-a -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard"
              ;;
          BCM2837)
              flags=""
              #flags="-march=armv8-a+crc -mtune=cortex-a53 -mfpu=neon-fp-armv8 -mfloat-abi=hard"
              ;;
      

      and running configure with this options:

      $ ./configure --my-transport=nrf24 --my-gateway=ethernet --my-port=5003 --soc=BCM2837
      

      Hope this shortens the learning curve for 64bit Rasperry Pi users!

      posted in Troubleshooting
      Gunther
      Gunther