Activity
From 03/01/2017 to 03/30/2017
03/21/2017
- 07:21 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Im thinking it's related to the preloader. The preloader is the one who does all the pin muxing for the HPS periphera...
- 07:06 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hello Dan,
When re-building an SD card image using my kernel (uImage), the DTB you attached, and the FPGA image (.... - 04:19 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- I've attached my preloader/uboot/fpga image.
I've also attached the spi_test c++ code I was working with, I've rem... - 03:00 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hello Dan,
I replaced the uImage on my SD card (at /boot) with the uImage I sent you (to ensure it's the same as w... - 02:07 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- I've tried your kernel and the RX buffer is still working. I couldn't get uboot to actually boot your device-tree, I ...
- 12:29 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- I've tried it with our 3.16 kernel and Altera's 4.1.22 and 4.1.22 RT kernel. All get data on the RX side. I'll try yo...
- 12:26 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hello Dan,
I've attached the requested files (Linux 4.1.22 LTSI RT branch compiled into "uImage" with defconfig "s... - 12:41 AM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hi Jared,
Unluckily I wasn't able to recreate the issue you are seeing. My RX buffer has the expected 0x8330 inste...
03/20/2017
- 07:53 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hi Jared,
I'm in the middle of recreating your test with one of our dev kits. I'll connect up the MOSI to the MISO...
03/15/2017
- 01:47 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hello Mike,
I modified the SPI device tree entry to have an "spi-max-frequency" of 1 MHz (a slow clock speed, as y...
03/14/2017
- 12:44 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hello Mike,
I just saw this message, and will try it out first thing tomorrow. Unfortunately, a snow storm is prev...
03/13/2017
- 05:20 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Here is some example code from the linux kernel documentation area.
BTW: our FPGA driver and the SPI HPS "hardc... - I found a problem reading the HPS gpio in uboot.
E.g ...
03/10/2017
- 05:34 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Hello Mike,
We've since conducted a loopback test (MOSI connected to MISO within the FPGA) and observed no change ...
03/09/2017
- 08:28 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Are you referring to modifying the FPGA such that MOSI is connected to MISO?
If that works, it might indicate that... - 06:43 PM Software Development: RE: SPI Comm - can transmit data from Linux, but not receive
- Have you tried using the Loopback option to see if you can just loop back the command data and if RX is OK?
-Mike
...
03/01/2017
- Context:
- Hardware: MitySOM 5CSX board connected to another board containing several chips which communicate via SP...
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