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Changed the signature of the CALLBACK_USB_GetDescriptor() callback function so that the descriptor pointer is const, to remove the need for extra casting inside the callback (thanks to Jonathan Kollasch).

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This commit is contained in:
Dean Camera 2010-08-24 13:02:38 +00:00
parent ed8ad18f26
commit 092f82e06f
88 changed files with 460 additions and 409 deletions
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16
Demos/Device/LowLevel/MIDI/Descriptors.c
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@ -285,37 +285,37 @@ USB_Descriptor_String_t PROGMEM ProductString =
*/
uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
const uint8_t wIndex,
void** const DescriptorAddress)
const void** const DescriptorAddress)
{
const uint8_t DescriptorType = (wValue >> 8);
const uint8_t DescriptorNumber = (wValue & 0xFF);
void* Address = NULL;
uint16_t Size = NO_DESCRIPTOR;
const void* Address = NULL;
uint16_t Size = NO_DESCRIPTOR;
switch (DescriptorType)
{
case DTYPE_Device:
Address = (void*)&DeviceDescriptor;
Address = &DeviceDescriptor;
Size = sizeof(USB_Descriptor_Device_t);
break;
case DTYPE_Configuration:
Address = (void*)&ConfigurationDescriptor;
Address = &ConfigurationDescriptor;
Size = sizeof(USB_Descriptor_Configuration_t);
break;
case DTYPE_String:
switch (DescriptorNumber)
{
case 0x00:
Address = (void*)&LanguageString;
Address = &LanguageString;
Size = pgm_read_byte(&LanguageString.Header.Size);
break;
case 0x01:
Address = (void*)&ManufacturerString;
Address = &ManufacturerString;
Size = pgm_read_byte(&ManufacturerString.Header.Size);
break;
case 0x02:
Address = (void*)&ProductString;
Address = &ProductString;
Size = pgm_read_byte(&ProductString.Header.Size);
break;
}