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Fix for unsupported commands: GET_CLOCK_FREQUENCIES and improvement of previous fix for GET_DATA_RATES #83

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merged 2 commits into from
Apr 10, 2021

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This pull request aims to fix the case of two commands possibly unsupported by some readers:

GET_CLOCK_FREQUENCIES (bNumClockSupported) - new fix

GET_DATA_RATES (bNumDataRatesSupported) - code style improvement of previous fix

Both fixes seem to be needed at least on the following reader: Bit4Id miniLector AIR NFC v3 (25DD:3403).

… data rates:

commit b00292f
Author: Ludovic Rousseau <[email protected]>
Date:   Sat Mar 27 18:46:15 2021 +0100

    ccid_usb: ask for bNumDataRatesSupported data rates

    Some devices set bNumDataRatesSupported to a value different from 0 but
    libusb_control_transfer() fails if another value (like 256) is used.

    The Alcor Micro 9540 is such a reader.

commit 19b9e92 (HEAD -> master, origin/master, origin/HEAD)
Author: Ludovic Rousseau <[email protected]>
Date:   Sun Apr 4 19:04:10 2021 +0200

    get_data_rates(): fix bug if bNumDataRatesSupported > 0

    The bug was introduced in b00292f (not
    released in a stable version)

    Thanks to Godfrey Chung got the bug report
    b00292f#r49087277

-------

These fixes seem also needed on the following reader: Bit4Id miniLector AIR NFC v3 (25DD:3403).

Signed-off-by: Guido Trentalancia <[email protected]>
Some devices set bNumClockSupported to a value different from 0 but
libusb_control_transfer() fails if another value (like 256) is used.

The Bit4Id miniLector AIR NFC v3 (25DD:3403) seems to need this fix.

Signed-off-by: Guido Trentalancia <[email protected]>
@LudovicRousseau LudovicRousseau merged commit 2ef2fb6 into LudovicRousseau:master Apr 10, 2021
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2 participants