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added CPLD update requirement to firmware/README

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improved cpld/README
fixes #458
This commit is contained in:
Michael Ossmann
2018-02-20 08:18:42 -07:00
parent d17f091736
commit fc8fcd8616
2 changed files with 8 additions and 0 deletions
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4
firmware/README
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@ -52,3 +52,7 @@ use a known good .dfu file from a release package. Load the firmware into RAM
with:
$ dfu-util --device 1fc9:000c --alt 0 --download hackrf_usb.dfu
It is important to update the CPLD whenever you are updating firmware and a new
CPLD image is available. See cpld/README for instructions.

4
firmware/cpld/README
View File

@ -7,3 +7,7 @@ To update the CPLD, first update the firmware, libhackrf, and hackrf-tools.
Then:
$ hackrf_cpldjtag -x sgpio_if/default.xsvf
After a few seconds, three LEDs should start blinking. This indicates that the
CPLD has been programmed successfully. Reset the HackRF device by pressing the
RESET button or by unplugging it and plugging it back in.