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Cleanup and optimization of the internal serial retrieval routines.

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Renamed ATTR_NOINLINE to ATTR_NO_INLINE to fit with the rest of the library function attribute names.
This commit is contained in:
Dean Camera 2009-08-03 07:10:54 +00:00
parent ab2ae13d81
commit 840d386deb
3 changed files with 12 additions and 17 deletions
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26
LUFA/Drivers/USB/LowLevel/DevChapter9.c
View file

@ -227,6 +227,12 @@ void USB_Device_GetConfiguration(void)
}
#if !defined(NO_INTERNAL_SERIAL) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
static char USB_Device_NibbleToASCII(uint8_t Nibble)
{
Nibble = ((Nibble & 0x0F) + '0');
return (Nibble > '9') ? (Nibble + ('A' - '9' - 1)) : Nibble;
}
static void USB_Device_GetInternalSerialDescriptor(void)
{
struct
@ -234,9 +240,6 @@ static void USB_Device_GetInternalSerialDescriptor(void)
USB_Descriptor_Header_t Header;
int16_t UnicodeString[20];
} SignatureDescriptor;
uint8_t SigReadAddress = 0x0E;
bool OddNibbleRead = false;
#if defined(USE_NONSTANDARD_DESCRIPTOR_NAMES)
SignatureDescriptor.Header.Size = sizeof(SignatureDescriptor);
@ -246,28 +249,19 @@ static void USB_Device_GetInternalSerialDescriptor(void)
SignatureDescriptor.Header.bDescriptorType = DTYPE_String;
#endif
uint8_t SigReadAddress = 0x0E;
for (uint8_t SerialCharNum = 0; SerialCharNum < 20; SerialCharNum++)
{
uint8_t SerialByte = boot_signature_byte_get(SigReadAddress);
if (OddNibbleRead)
if (SerialCharNum & 0x01)
{
SerialByte >>= 4;
SigReadAddress++;
}
else
{
SerialByte &= 0x0F;
}
OddNibbleRead = !(OddNibbleRead);
if (SerialByte < 0x0A)
SerialByte += '0';
else
SerialByte += ('A' - 0x0A);
SignatureDescriptor.UnicodeString[SerialCharNum] = SerialByte;
SignatureDescriptor.UnicodeString[SerialCharNum] = USB_Device_NibbleToASCII(SerialByte);
}
Endpoint_ClearSETUP();

1
LUFA/Drivers/USB/LowLevel/DevChapter9.h
View file

@ -124,6 +124,7 @@
static void USB_Device_ClearSetFeature(void);
#if !defined(NO_INTERNAL_SERIAL) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
static char USB_Device_NibbleToASCII(uint8_t Nibble) ATTR_ALWAYS_INLINE;
static void USB_Device_GetInternalSerialDescriptor(void);
#endif
#endif