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add initial DFU class request handling 

downloading is not supported yet, but the rest works

Change-Id: I4896d73602bb1b1001c1ce3af9b98e5173b45edf
This commit is contained in:
Kevin Redon 2018-12-18 13:29:23 +01:00
parent c976a85af4
commit 2257c6c32a
1 changed files with 49 additions and 4 deletions
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53
usb/class/dfu/device/dfudf.c
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@ -34,6 +34,9 @@ struct dfudf_func_data {
static struct usbdf_driver _dfudf;
static struct dfudf_func_data _dfudf_funcd;
static enum usb_dfu_state dfu_state = USB_DFU_STATE_DFU_IDLE; /**< current DFU state */
static enum usb_dfu_status dfu_status = USB_DFU_STATUS_OK; /**< current DFU status */
/**
* \brief Enable DFU Function
* \param[in] drv Pointer to USB device function driver
@ -137,15 +140,55 @@ static int32_t dfudf_req(uint8_t ep, struct usb_req *req, enum usb_ctrl_stage st
if (0x01 != ((req->bmRequestType >> 5) & 0x03)) { // class request
return ERR_NOT_FOUND;
}
int32_t to_return = ERR_NONE;
uint8_t response[6]; // buffer for the response to this request
if ((req->wIndex == _dfudf_funcd.func_iface)) {
// we don't verify the bmRequestType
switch (req->bRequest) {
default:
return ERR_UNSUPPORTED_OP;
case USB_DFU_GETSTATUS: // get status
response[0] = dfu_status; // set status
response[1] = 100; // set poll timeout (24 bits, in milliseconds) to small value for periodical poll
response[2] = 0; // set poll timeout (24 bits, in milliseconds) to small value for periodical poll
response[3] = 0; // set poll timeout (24 bits, in milliseconds) to small value for periodical poll
response[4] = dfu_state; // set state
response[5] = 0; // string not used
to_return = usbdc_xfer(ep, response, 6, false); // send back status
if (USB_DFU_STATE_DFU_DNLOAD_SYNC == dfu_state) {
dfu_state = USB_DFU_STATE_DFU_DNBUSY; // switch to busy state
} else if (USB_DFU_STATE_DFU_MANIFEST_SYNC == dfu_state) {
dfu_state = USB_DFU_STATE_DFU_MANIFEST; // go to manifest mode
dfu_state = USB_DFU_STATE_APP_DETACH;
}
break;
case USB_DFU_CLRSTATUS: // clear status
if (USB_DFU_STATE_DFU_ERROR == dfu_state || USB_DFU_STATUS_OK != dfu_status) { // only clear in case there is an error
dfu_status = USB_DFU_STATUS_OK; // clear error status
dfu_state = USB_DFU_STATE_DFU_IDLE; // put back in idle state
}
to_return = usbdc_xfer(ep, NULL, 0, true); // send ACK
break;
case USB_DFU_GETSTATE: // get state
response[0] = dfu_state; // return state
to_return = usbdc_xfer(ep, response, 1, false); // send back state
break;
case USB_DFU_ABORT: // abort current operation
dfu_state = USB_DFU_STATE_DFU_IDLE; // put back in idle state (nothing else to do)
to_return = usbdc_xfer(ep, NULL, 0, true); // send ACK
//flash_pointer = (uint32_t)&__application_beginning; // reset download location
break;
case USB_DFU_DETACH: // detach makes only sense in DFU run-time/application mode
case USB_DFU_UPLOAD: // upload firmware from flash not supported
case USB_DFU_DNLOAD: // download firmware on flash TODO implement
default: // all other DFU class request
dfu_state = USB_DFU_STATE_DFU_ERROR; // unknown or unsupported class request
to_return = ERR_UNSUPPORTED_OP; // stall control pipe (don't reply to the request)
break;
}
} else {
return ERR_NOT_FOUND;
to_return = ERR_NOT_FOUND;
}
return to_return;
}
/** USB Device DFU Handler Struct */
@ -165,11 +208,13 @@ int32_t dfudf_init(void)
usbdc_register_function(&_dfudf);
usbdc_register_handler(USBDC_HDL_REQ, &dfudf_req_h);
// TODO check if firmware is corrupted and set dfuERROR state if it is
return ERR_NONE;
}
/**
* \brief Deinitialize the USB DFU Function Driver
* \brief De-initialize the USB DFU Function Driver
*/
void dfudf_deinit(void)
{