catarrh/simtrace2
1
0
Fork 0
mirror of https://gitea.osmocom.org/sim-card/simtrace2.git synced 2026-03-16 21:28:33 +03:00
Code Issues Packages Projects Releases Wiki Activity

DFU: Resolve DFU runtime descriptor dynamically from descriptors

Browse Source 
We cannoy simply use the DFU runtime descriptor of the DFU mode, but we
have to use the descriptor of the specific currently-selected runtime
configuration.  Let's iterate over the descriptors of a configuration
and find the DFU runtime descriptor in it.
This commit is contained in:
Harald Welte
2017-03-06 22:42:11 +01:00
parent 5b108d8cf0
commit e8869fb8ff
1 changed files with 25 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
firmware/atmel_softpack_libraries/usb/device/dfu/dfu_runtime.c
View File

@@ -22,6 +22,7 @@
*/
#include <board.h>
#include <assert.h>
#include <core_cm3.h>
#include <usb/include/USBD.h>
@@ -67,6 +68,26 @@ static void __dfufunc handle_getstate(void)
USBD_Write(0, (char *)&u8, sizeof(u8), NULL, 0);
}
static const uint8_t *get_dfu_func_desc(void)
{
USBDDriver *usbdDriver = USBD_GetDriver();
const USBConfigurationDescriptor *cfg_desc;
const USBGenericDescriptor *gen_desc;
if (USBD_IsHighSpeed())
cfg_desc = &usbdDriver->pDescriptors->pHsConfiguration[usbdDriver->cfgnum];
else
cfg_desc = usbdDriver->pDescriptors->pFsConfiguration[usbdDriver->cfgnum];
for (gen_desc = (const USBGenericDescriptor *) cfg_desc;
(const uint8_t *) gen_desc < (const uint8_t *) cfg_desc + cfg_desc->wTotalLength;
gen_desc = (const USBGenericDescriptor *) ((const uint8_t *)gen_desc + gen_desc->bLength)) {
if (gen_desc->bDescriptorType == USB_DT_DFU)
return (const uint8_t *) gen_desc;
}
return NULL;
}
static void TerminateCtrlInWithNull(void *pArg,
unsigned char status,
unsigned long int transferred,
@@ -100,15 +121,18 @@ void USBDFU_Runtime_RequestHandler(const USBGenericRequest *request)
USBGetDescriptorRequest_GetDescriptorType(request) == USB_DT_DFU) {
uint16_t length = sizeof(struct usb_dfu_func_descriptor);
const USBDeviceDescriptor *pDevice;
const uint8_t *dfu_func_desc = get_dfu_func_desc();
int terminateWithNull;
ASSERT(dfu_func_desc);
if (USBD_IsHighSpeed())
pDevice = usbdDriver->pDescriptors->pHsDevice;
else
pDevice = usbdDriver->pDescriptors->pFsDevice;
terminateWithNull = ((length % pDevice->bMaxPacketSize0) == 0);
USBD_Write(0, &dfu_cfg_descriptor.func_dfu, length,
USBD_Write(0, dfu_func_desc, length,
terminateWithNull ? TerminateCtrlInWithNull : 0, 0);
return;
}