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| author | Dean Camera <dean@fourwalledcubicle.com> | 2013-11-21 19:19:45 +0100 |
|---|---|---|
| committer | Dean Camera <dean@fourwalledcubicle.com> | 2013-11-21 19:19:45 +0100 |
| commit | e3cb0f48ef4dbb5211c7db1a7447dc997520d212 (patch) | |
| tree | 81ec42459d2e133f16769adb3df6f6463151dba7 /LUFA/Drivers/USB/Core/StdDescriptors.h | |
| parent | 52c69331ec117affc50838d62cb6770cd1d57b95 (diff) | |
| download | lufa-e3cb0f48ef4dbb5211c7db1a7447dc997520d212.tar.gz lufa-e3cb0f48ef4dbb5211c7db1a7447dc997520d212.tar.bz2 lufa-e3cb0f48ef4dbb5211c7db1a7447dc997520d212.zip | |
Use new VERSION_BCD() macro with explicit int arguments to fix edge cases with the previous floating point macro version.
Diffstat (limited to 'LUFA/Drivers/USB/Core/StdDescriptors.h')
| -rw-r--r-- | LUFA/Drivers/USB/Core/StdDescriptors.h | 23 |
1 files changed, 9 insertions, 14 deletions
diff --git a/LUFA/Drivers/USB/Core/StdDescriptors.h b/LUFA/Drivers/USB/Core/StdDescriptors.h index d7f0ca349..d77acf4e3 100644 --- a/LUFA/Drivers/USB/Core/StdDescriptors.h +++ b/LUFA/Drivers/USB/Core/StdDescriptors.h @@ -85,17 +85,20 @@ */ #define USB_STRING_LEN(UnicodeChars) (sizeof(USB_Descriptor_Header_t) + ((UnicodeChars) << 1)) - /** Macro to encode a given four digit floating point version number (e.g. 01.23) into Binary Coded - * Decimal format for descriptor fields requiring BCD encoding, such as the USB version number in the - * standard device descriptor. + /** Macro to encode a given major/minor/revision version number into Binary Coded Decimal format for descriptor + * fields requiring BCD encoding, such as the USB version number in the standard device descriptor. * * \note This value is automatically converted into Little Endian, suitable for direct use inside device * descriptors on all architectures without endianness conversion macros. * - * \param[in] x Version number to encode as a 16-bit little-endian number, as a floating point number. + * \param[in] Major Major version number to encode. + * \param[in] Minor Minor version number to encode. + * \param[in] Revision Revision version number to encode. */ - #define VERSION_BCD(x) CPU_TO_LE16((VERSION_TENS(x) << 12) | (VERSION_ONES(x) << 8) | \ - (VERSION_TENTHS(x) << 4) | (VERSION_HUNDREDTHS(x) << 0) ) + #define VERSION_BCD(Major, Minor, Revision) \ + CPU_TO_LE16( ((Major & 0xFF) << 8) | \ + ((Minor & 0x0F) << 4) | \ + (Revision & 0x0F) ) /** String language ID for the English language. Should be used in \ref USB_Descriptor_String_t descriptors * to indicate that the English language is supported by the device in its string descriptors. @@ -736,14 +739,6 @@ */ } ATTR_PACKED USB_StdDescriptor_String_t; - /* Private Interface - For use in library only: */ - #if !defined(__DOXYGEN__) - /* Macros: */ - #define VERSION_TENS(x) (int)((int)(x) / 10) - #define VERSION_ONES(x) (int)((int)(x) % 10) - #define VERSION_TENTHS(x) (int)((x - (int)x) * 10) - #define VERSION_HUNDREDTHS(x) (int)((x * 100) - ((int)(x * 10) * 10)) - #endif /* Disable C linkage for C++ Compilers: */ #if defined(__cplusplus) |