diff options
Diffstat (limited to 'LUFA/Drivers/USB')
| -rw-r--r-- | LUFA/Drivers/USB/HighLevel/StdDescriptors.h | 30 | ||||
| -rw-r--r-- | LUFA/Drivers/USB/LowLevel/DevChapter9.c | 2 | ||||
| -rw-r--r-- | LUFA/Drivers/USB/LowLevel/DevChapter9.h | 11 |
3 files changed, 25 insertions, 18 deletions
diff --git a/LUFA/Drivers/USB/HighLevel/StdDescriptors.h b/LUFA/Drivers/USB/HighLevel/StdDescriptors.h index 2ce75b2d9..274b84fc4 100644 --- a/LUFA/Drivers/USB/HighLevel/StdDescriptors.h +++ b/LUFA/Drivers/USB/HighLevel/StdDescriptors.h @@ -74,6 +74,21 @@ * descriptor does not exist.
*/
#define NO_DESCRIPTOR 0
+
+ #if (!defined(NO_INTERNAL_SERIAL) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))) || defined(__DOXYGEN__)
+ /** String descriptor index for the device's unique serial number string descriptor within the device.
+ * This unique serial number is used by the host to associate resources to the device (such as drivers or COM port
+ * number allocations) to a device regardless of the port it is plugged in to on the host. Some USB AVRs contain
+ * a unique serial number internally, and setting the device descriptors serial number string index to this value
+ * will cause it to use the internal serial number.
+ *
+ * On unsupported devices, this will evaluate to NO_DESCRIPTOR and so will force the host to create a pseduo-serial
+ * number for the device.
+ */
+ #define USE_INTERNAL_SERIAL 0xDC
+ #else
+ #define USE_INTERNAL_SERIAL NO_DESCRIPTOR
+ #endif
/** Macro to calculate the power value for the device descriptor, from a given number of milliamps. */
#define USB_CONFIG_POWER_MA(mA) (mA >> 1)
@@ -244,13 +259,14 @@ */
uint8_t SerialNumStrIndex; /**< String index for the product's globally unique hexadecimal
* serial number, in uppercase Unicode ASCII.
- *
- * \note On some AVR models, there is an embedded serial number
- * in the chip which can be used for the device serial number.
- * To use this serial number, define USE_INTERNAL_SERIAL to a
- * unique string index number in the project makefile and set
- * this value to USE_INTERNAL_SERIAL.
- *
+ *
+ * \note On some AVR models, there is an embedded serial number
+ * in the chip which can be used for the device serial number.
+ * To use this serial number, set this to USE_INTERNAL_SERIAL.
+ * On unsupported devices, this will evaluate to 0 and will cause
+ * the host to generate a pseudo-unique value for the device upon
+ * insertion.
+ *
* \see ManufacturerStrIndex structure entry.
*/
diff --git a/LUFA/Drivers/USB/LowLevel/DevChapter9.c b/LUFA/Drivers/USB/LowLevel/DevChapter9.c index 55b49b803..4014ed1ca 100644 --- a/LUFA/Drivers/USB/LowLevel/DevChapter9.c +++ b/LUFA/Drivers/USB/LowLevel/DevChapter9.c @@ -179,7 +179,7 @@ static void USB_Device_GetDescriptor(void) void* DescriptorPointer;
uint16_t DescriptorSize;
- #if defined(USE_INTERNAL_SERIAL)
+ #if !defined(NO_INTERNAL_SERIAL) && (defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
if (USB_ControlRequest.wValue == ((DTYPE_String << 8) | USE_INTERNAL_SERIAL))
{
uint8_t SignatureDescriptor[2 + (sizeof(int16_t) * 12)];
diff --git a/LUFA/Drivers/USB/LowLevel/DevChapter9.h b/LUFA/Drivers/USB/LowLevel/DevChapter9.h index 65fa0418c..505256e68 100644 --- a/LUFA/Drivers/USB/LowLevel/DevChapter9.h +++ b/LUFA/Drivers/USB/LowLevel/DevChapter9.h @@ -45,21 +45,12 @@ #include "../HighLevel/USBTask.h"
#include "LowLevel.h"
- /* Preprocessor Checks: */
- #if defined(USE_INTERNAL_SERIAL) && !(defined(USB_SERIES_6_AVR) || defined(USB_SERIES_7_AVR))
- #error USE_INTERNAL_SERIAL invalid, the selected AVR model does not contain unique serial bytes.
- #endif
-
- #if defined(USE_INTERNAL_SERIAL) && (USE_INTERNAL_SERIAL <= 1)
- #error USE_INTERNAL_SERIAL must be defined to the string descriptor index chosen for the serial number descriptor.
- #endif
-
/* Enable C linkage for C++ Compilers: */
#if defined(__cplusplus)
extern "C" {
#endif
- /* Public Interface - May be used in end-application: */
+ /* Public Interface - May be used in end-application: */
/* Global Variables: */
/** Indicates the currently set configuration number of the device. USB devices may have several
* different configurations which the host can select between; this indicates the currently selected
|