Hi Yegor,
On Tuesday, 18 April 2017 11:47:50 CEST Yegor Yefremov wrote:
> I'm configuring FTX ftdi.CBUS_FUNCTION_0 to ftdi.CBUSX_CLK24 in Linux
> (ARM machine). After this ttyUSB0 gets disconnected, I can either
> rebind it or reload the FTDI drive. Everything as expected. The
> problem is, that I get 24MHz output only if I really reboot my ARM
> machine.
>
> How can I activate 24MHz without rebooting?
>
> My code snippet for programming 24MHz:
>
> if ftdi.set_eeprom_value(context, ftdi.CBUS_FUNCTION_0, ftdi.CBUSX_CLK24) !=
> 0: print("Failed to set CBUS_FUNCTION_0")
> return False
>
> # prepare EEPROM buffer for writing
> if ftdi.eeprom_build(context) < 0:
> print("Failed to build EEPROM")
> return False
>
> # finally write EEPROM
> if ftdi.write_eeprom(context) != 0:
> print("Failed to write EEPROM")
> return False
>
> # close FTDI device
> if ftdi.usb_close(context) != 0:
> print("Failed to close FTDI device")
> return False
do you really need to reboot the host
or does re-plugging the device also help?
Did you try to call ftdi_usb_reset() after flashing?
Thought ftdi_usb_open() calls that internally anyway.
Cheers,
Thomas
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