/** * This function will handle cdc bulk in endpoint request. * * @param func the usb function object. * @param size request size. * * @return RT_EOK. */ static rt_err_t _ep_in_handler(ufunction_t func, rt_size_t size) { struct vcom *data; RT_ASSERT(func != RT_NULL); RT_DEBUG_LOG(RT_DEBUG_USB, ("_ep_in_handler %d\n", size)); data = (struct vcom*)func->user_data; if ((size != 0) && (size % CDC_MAX_PACKET_SIZE == 0)) { /* don't have data right now. Send a zero-length-packet to * terminate the transaction. * * FIXME: actually, this might not be the right place to send zlp. * Only the rt_device_write could know how much data is sending. */ data->in_sending = RT_TRUE; data->ep_in->request.buffer = RT_NULL; data->ep_in->request.size = 0; data->ep_in->request.req_type = UIO_REQUEST_WRITE; rt_usbd_io_request(func->device, data->ep_in, &data->ep_in->request); return RT_EOK; } rt_completion_done(&data->wait); return RT_EOK; }
void startup_checking(struct rt_completion *cmp) { if (filesystem_checking() == RT_FALSE) { filesystem_format(); } resource_checking(); network_checking(); if (cmp) rt_completion_done(cmp); }
/* ISR for serial interrupt */ void rt_hw_serial_isr(struct rt_serial_device *serial, int event) { switch (event & 0xff) { case RT_SERIAL_EVENT_RX_IND: { int ch = -1; rt_base_t level; struct rt_serial_rx_fifo* rx_fifo; /* interrupt mode receive */ rx_fifo = (struct rt_serial_rx_fifo*)serial->serial_rx; RT_ASSERT(rx_fifo != RT_NULL); while (1) { ch = serial->ops->getc(serial); if (ch == -1) break; /* disable interrupt */ level = rt_hw_interrupt_disable(); rx_fifo->buffer[rx_fifo->put_index] = ch; rx_fifo->put_index += 1; if (rx_fifo->put_index >= serial->config.bufsz) rx_fifo->put_index = 0; /* if the next position is read index, discard this 'read char' */ if (rx_fifo->put_index == rx_fifo->get_index) { rx_fifo->get_index += 1; if (rx_fifo->get_index >= serial->config.bufsz) rx_fifo->get_index = 0; } /* enable interrupt */ rt_hw_interrupt_enable(level); } /* invoke callback */ if (serial->parent.rx_indicate != RT_NULL) { rt_size_t rx_length; /* get rx length */ level = rt_hw_interrupt_disable(); rx_length = (rx_fifo->put_index >= rx_fifo->get_index)? (rx_fifo->put_index - rx_fifo->get_index): (serial->config.bufsz - (rx_fifo->get_index - rx_fifo->put_index)); rt_hw_interrupt_enable(level); serial->parent.rx_indicate(&serial->parent, rx_length); } break; } case RT_SERIAL_EVENT_TX_DONE: { struct rt_serial_tx_fifo* tx_fifo; tx_fifo = (struct rt_serial_tx_fifo*)serial->serial_tx; rt_completion_done(&(tx_fifo->completion)); break; } case RT_SERIAL_EVENT_TX_DMADONE: { const void *data_ptr; rt_size_t data_size; const void *last_data_ptr; struct rt_serial_tx_dma* tx_dma; tx_dma = (struct rt_serial_tx_dma*) serial->serial_tx; rt_data_queue_pop(&(tx_dma->data_queue), &last_data_ptr, &data_size, 0); if (rt_data_queue_peak(&(tx_dma->data_queue), &data_ptr, &data_size) == RT_EOK) { /* transmit next data node */ tx_dma->activated = RT_TRUE; serial->ops->dma_transmit(serial, data_ptr, data_size, RT_SERIAL_DMA_TX); } else { tx_dma->activated = RT_FALSE; } /* invoke callback */ if (serial->parent.tx_complete != RT_NULL) { serial->parent.tx_complete(&serial->parent, (void*)last_data_ptr); } break; } case RT_SERIAL_EVENT_RX_DMADONE: { int length; struct rt_serial_rx_dma* rx_dma; rx_dma = (struct rt_serial_rx_dma*)serial->serial_rx; /* get DMA rx length */ length = (event & (~0xff)) >> 8; serial->parent.rx_indicate(&(serial->parent), length); rx_dma->activated = RT_FALSE; break; } } }