/**
* @brief Default data received callback.
* @details The application must use this function as callback for the OUT
* data endpoint.
*
* @param[in] usbp pointer to the @p USBDriver object
* @param[in] ep OUT endpoint number
*/
void sduDataReceived(USBDriver *usbp, usbep_t ep) {
uint8_t *buf;
SerialUSBDriver *sdup = usbp->out_params[ep - 1U];
if (sdup == NULL) {
return;
}
osalSysLockFromISR();
/* Signaling that data is available in the input queue.*/
chnAddFlagsI(sdup, CHN_INPUT_AVAILABLE);
/* Posting the filled buffer in the queue.*/
ibqPostFullBufferI(&sdup->ibqueue,
usbGetReceiveTransactionSizeX(sdup->config->usbp,
sdup->config->bulk_out));
/* The endpoint cannot be busy, we are in the context of the callback,
so a packet is in the buffer for sure. Trying to get a free buffer
for the next transaction.*/
buf = ibqGetEmptyBufferI(&sdup->ibqueue);
if (buf != NULL) {
/* Buffer found, starting a new transaction.*/
usbStartReceiveI(sdup->config->usbp, sdup->config->bulk_out,
buf, SERIAL_USB_BUFFERS_SIZE);
}
osalSysUnlockFromISR();
}
/**
* @brief USB device configured handler.
*
* @param[in] sdup pointer to a @p SerialUSBDriver object
*
* @iclass
*/
void sduConfigureHookI(SerialUSBDriver *sdup) {
uint8_t *buf;
ibqResetI(&sdup->ibqueue);
obqResetI(&sdup->obqueue);
chnAddFlagsI(sdup, CHN_CONNECTED);
/* Starts the first OUT transaction immediately.*/
buf = ibqGetEmptyBufferI(&sdup->ibqueue);
osalDbgAssert(buf != NULL, "no free buffer");
usbStartReceiveI(sdup->config->usbp, sdup->config->bulk_out,
buf, SERIAL_USB_BUFFERS_SIZE);
}
/**
* @brief USB device configured handler.
*
* @param[in] uhdp pointer to a @p USBHIDDriver object
*
* @iclass
*/
void hidConfigureHookI(USBHIDDriver *uhdp) {
uint8_t *buf;
ibqResetI(&uhdp->ibqueue);
obqResetI(&uhdp->obqueue);
chnAddFlagsI(uhdp, CHN_CONNECTED);
/* Starts the first OUT transaction immediately.*/
buf = ibqGetEmptyBufferI(&uhdp->ibqueue);
osalDbgAssert(buf != NULL, "no free buffer");
usbStartReceiveI(uhdp->config->usbp, uhdp->config->int_out,
buf, USB_HID_BUFFERS_SIZE);
}
/**
* @brief Notification of empty buffer released into the input buffers queue.
*
* @param[in] bqp the buffers queue pointer.
*/
static void ibnotify(io_buffers_queue_t *bqp) {
SerialUSBDriver *sdup = bqGetLinkX(bqp);
/* If the USB driver is not in the appropriate state then transactions
must not be started.*/
if ((usbGetDriverStateI(sdup->config->usbp) != USB_ACTIVE) ||
(sdup->state != SDU_READY)) {
return;
}
/* Checking if there is already a transaction ongoing on the endpoint.*/
if (!usbGetReceiveStatusI(sdup->config->usbp, sdup->config->bulk_out)) {
/* Trying to get a free buffer.*/
uint8_t *buf = ibqGetEmptyBufferI(&sdup->ibqueue);
if (buf != NULL) {
/* Buffer found, starting a new transaction.*/
usbStartReceiveI(sdup->config->usbp, sdup->config->bulk_out,
buf, SERIAL_USB_BUFFERS_SIZE);
}
}
}
