u8 process_dfu_request(StandardRequest *request) {
u8 currentState = dfu_status.bState;
dfu_status.bStatus = OK;
// debug2(" rtyp: %d\n", request->bmRequestType);
// debug2(" rqst: %d\n", request->bRequest);
// debug2("DFU Index : %d\r\n", request->wIndex);
dfuBusy = 1;
if (currentState == dfuIDLE) {
dfuBusy = 1;
if (request->bRequest == DFU_DNLOAD) {
if (request->wLength > 0) {
dfu_status.bState = dfuDNLOAD_SYNC;
if (request->wIndex == 0) {
if (request->wValue == 0) {
dfuSubCommand = DFU_WAIT_CMD;
} else {
dfuSubCommand = DFU_CMD_DOWNLOAD;
}
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errUNKNOWN;
}
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errNOTDONE;
}
} else if (request->bRequest == DFU_UPLOAD) {
dfu_status.bState = dfuUPLOAD_IDLE;
if (request->wIndex == 0) {
if (request->wValue == 0) {
dfuSubCommand = DFU_CMD_GET_CMD;
} else {
dfuSubCommand = DFU_CMD_UPLOAD;
address = ENTRY;
}
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errUNKNOWN;
}
} else if (request->bRequest == DFU_ABORT) {
dfu_status.bState = dfuIDLE;
dfu_status.bStatus = OK;
} else if (request->bRequest == DFU_GETSTATUS) {
dfu_status.bState = dfuIDLE;
} else if (request->bRequest == DFU_GETSTATE) {
dfu_status.bState = dfuIDLE;
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
} else if (currentState == dfuDNLOAD_SYNC) {
/* device received block, waiting for DFU_GETSTATUS request */
if (request->bRequest == DFU_GETSTATUS) {
/* todo, add routine to wait for last block write to finish */
if (dfu_op_state == INIT) {
dfu_op_state = BEGIN;
if (dfuSubCommand == DFU_CMD_MASS_ERASE) {
dfu_status.bwPollTimeout0 = LOWB(MASS_ERASE_TIME);
dfu_status.bwPollTimeout1 = HIGHB(MASS_ERASE_TIME);
dfu_status.bwPollTimeout2 = 0x00;
} else {
dfu_status.bwPollTimeout0 = LOWB(WRITE_TIME);
dfu_status.bwPollTimeout1 = HIGHB(WRITE_TIME);
dfu_status.bwPollTimeout2 = 0x00;
}
dfu_status.bState = dfuDNBUSY;
} else if (dfu_op_state == BEGIN) {
dfu_status.bState = dfuDNLOAD_SYNC;
} else if (dfu_op_state == MIDDLE) {
dfu_status.bState = dfuDNLOAD_SYNC;
} else if (dfu_op_state == END) {
dfu_status.bwPollTimeout0 = 0x00;
dfu_status.bwPollTimeout1 = 0x00;
dfu_status.bwPollTimeout2 = 0x00;
dfu_op_state = INIT;
dfu_status.bState = dfuDNLOAD_IDLE;
}
} else if (request->bRequest == DFU_GETSTATE) {
dfu_status.bState = dfuDNLOAD_SYNC;
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
} else if (currentState == dfuDNBUSY) {
/* if were actually done writing, goto sync, else stay busy */
if (dfu_op_state == END) {
dfu_status.bwPollTimeout0 = 0x00;
dfu_status.bwPollTimeout1 = 0x00;
dfu_status.bwPollTimeout2 = 0x00;
dfu_op_state = INIT;
dfu_status.bState = dfuDNLOAD_IDLE;
} else {
dfu_status.bState = dfuDNBUSY;
}
} else if (currentState == dfuDNLOAD_IDLE) {
/* device is expecting dfu_dnload requests */
if (request->bRequest == DFU_DNLOAD) {
if (request->wLength > 0) {
dfu_status.bState = dfuDNLOAD_SYNC;
if (request->wValue == 0) {
dfuSubCommand = DFU_WAIT_CMD;
} else {
dfuSubCommand = DFU_CMD_DOWNLOAD;
}
} else {
dfu_status.bState = dfuMANIFEST_SYNC;
}
} else if (request->bRequest == DFU_ABORT) {
dfu_status.bState = dfuIDLE;
address = 0;
} else if (request->bRequest == DFU_GETSTATUS) {
dfu_status.bState = dfuDNLOAD_IDLE;
} else if (request->bRequest == DFU_GETSTATE) {
dfu_status.bState = dfuDNLOAD_IDLE;
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
} else if (currentState == dfuMANIFEST_SYNC) {
/* device has received last block, waiting DFU_GETSTATUS request */
if (request->bRequest == DFU_GETSTATUS) {
dfu_status.bState = dfuMANIFEST;
dfu_status.bStatus = OK;
} else if (request->bRequest == DFU_GETSTATE) {
dfu_status.bState = dfuMANIFEST_SYNC;
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
} else if (currentState == dfuMANIFEST) {
/* device is in manifestation phase */
dfu_status.bState = dfuMANIFEST;
dfu_status.bStatus = OK;
} else if (currentState == dfuMANIFEST_WAIT_RESET) {
dfu_status.bState = dfuMANIFEST_WAIT_RESET;
} else if (currentState == dfuUPLOAD_IDLE) {
/* device expecting further dfu_upload requests */
if (request->bRequest == DFU_UPLOAD) {
if (request->wLength > 0) {
if (request->wValue == 0) {
dfuSubCommand = DFU_CMD_GET_CMD;
} else {
dfuSubCommand = DFU_CMD_UPLOAD;
}
} else {
dfuSubCommand = DFU_CMD_UPLOAD;
}
} else if (request->bRequest == DFU_ABORT) {
dfu_status.bState = dfuIDLE;
address = 0;
} else if (request->bRequest == DFU_GETSTATUS) {
dfu_status.bState = dfuUPLOAD_IDLE;
} else if (request->bRequest == DFU_GETSTATE) {
dfu_status.bState = dfuUPLOAD_IDLE;
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
} else if (currentState == dfuERROR) {
/* status is in error, awaiting DFU_CLRSTATUS request */
if (request->bRequest == DFU_GETSTATUS) {
/* todo, add routine to wait for last block write to finish */
dfu_status.bState = dfuERROR;
} else if (request->bRequest == DFU_GETSTATE) {
dfu_status.bState = dfuERROR;
} else if (request->bRequest == DFU_CLRSTATUS) {
init_dfu();
} else {
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
} else {
/* some kind of error... */
dfu_status.bState = dfuERROR;
dfu_status.bStatus = errSTALLEDPKT;
}
if (dfu_status.bStatus == OK) {
return TRUE;
} else {
return FALSE;
}
}
#include "cdc_descriptors.h"
const unsigned char const cdc_device_descriptor[] = {
0x12, // bLength
USB_DEVICE_DESCRIPTOR_TYPE, // bDescriptorType
0x0, // bcdUSB (low byte)
0x2, // bcdUSB (high byte)
0x02, // bDeviceClass
0x00, // bDeviceSubClass Abstract Control Model
0x00, // bDeviceProtocol
USB_EP0_BUFFER_SIZE, // bMaxPacketSize
LOWB(USB_VID), // idVendor (low byte)
HIGHB(USB_VID), // idVendor (high byte)
LOWB(USB_PID), // idProduct (low byte)
HIGHB(USB_PID), // idProduct (high byte)
LOWB(USB_DEV), // bcdDevice (low byte)
HIGHB(USB_DEV), // bcdDevice (high byte)
USB_iManufacturer, // iManufacturer
USB_iProduct, // iProduct
USB_iSerialNum, // iSerialNumber (none)
USB_NUM_CONFIGURATIONS // bNumConfigurations
};
#define USB_CONFIG_DESC_TOT_LENGTH 67
const unsigned char const cdc_config_descriptor[] = {
0x09, // bLength
USB_CONFIGURATION_DESCRIPTOR_TYPE, // bDescriptorType
LOWB(USB_CONFIG_DESC_TOT_LENGTH), // wTotalLength (low byte), TODO: Automatic calculation - sizeof doesn't work here
HIGHB(USB_CONFIG_DESC_TOT_LENGTH), // wTotalLength (high byte)
USB_NUM_INTERFACES, // bNumInterfaces
0x01, // bConfigurationValue