151 lines
4.9 KiB
C
151 lines
4.9 KiB
C
/**************************************************************************/
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/*!
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@file cdcd_app.c
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@author hathach (tinyusb.org)
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@section LICENSE
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Software License Agreement (BSD License)
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Copyright (c) 2013, hathach (tinyusb.org)
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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3. Neither the name of the copyright holders nor the
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names of its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
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EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
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DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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This file is part of the tinyusb stack.
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*/
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/**************************************************************************/
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#include "cdcd_app.h"
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#if TUSB_CFG_DEVICE_CDC
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#include "common/fifo.h" // TODO refractor
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//--------------------------------------------------------------------+
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// INCLUDE
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//--------------------------------------------------------------------+
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enum {
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CDCD_APP_BUFFER_SIZE = 64
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};
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//--------------------------------------------------------------------+
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// MACRO CONSTANT TYPEDEF
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//--------------------------------------------------------------------+
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OSAL_TASK_DEF(cdcd_serial_app_task, 128, CDCD_SERIAL_APP_TASK_PRIO);
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OSAL_SEM_DEF(cdcd_semaphore);
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static osal_semaphore_handle_t sem_hdl;
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ATTR_USB_MIN_ALIGNMENT static uint8_t serial_rx_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
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ATTR_USB_MIN_ALIGNMENT static uint8_t serial_tx_buffer[CDCD_APP_BUFFER_SIZE] TUSB_CFG_ATTR_USBRAM;
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//--------------------------------------------------------------------+
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// INTERNAL OBJECT & FUNCTION DECLARATION
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//--------------------------------------------------------------------+
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FIFO_DEF(fifo_serial, CDCD_APP_BUFFER_SIZE, uint8_t, true);
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//--------------------------------------------------------------------+
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// IMPLEMENTATION
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void cdcd_serial_app_init(void)
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{
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sem_hdl = osal_semaphore_create( OSAL_SEM_REF(cdcd_semaphore) );
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ASSERT_PTR( sem_hdl, VOID_RETURN);
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ASSERT( TUSB_ERROR_NONE == osal_task_create( OSAL_TASK_REF(cdcd_serial_app_task) ), VOID_RETURN);
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}
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void tusbd_cdc_mounted_cb(uint8_t coreid)
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{
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osal_semaphore_reset(sem_hdl);
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tusbd_cdc_receive(coreid, serial_rx_buffer, CDCD_APP_BUFFER_SIZE, true);
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}
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void tusbd_cdc_xfer_isr(uint8_t coreid, tusb_event_t event, cdc_pipeid_t pipe_id, uint32_t xferred_bytes)
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{
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switch ( pipe_id )
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{
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case CDC_PIPE_DATA_OUT:
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switch(event)
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{
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case TUSB_EVENT_XFER_COMPLETE:
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for(uint8_t i=0; i<xferred_bytes; i++)
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{
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fifo_write(&fifo_serial, serial_rx_buffer+i);
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}
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osal_semaphore_post(sem_hdl); // notify main task
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break;
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case TUSB_EVENT_XFER_ERROR:
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xferred_bytes = 0; // ignore
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break;
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case TUSB_EVENT_XFER_STALLED:
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default :
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ASSERT(false, VOID_RETURN);
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break;
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}
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break;
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case CDC_PIPE_DATA_IN:
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case CDC_PIPE_NOTIFICATION:
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default:
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break;
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}
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}
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OSAL_TASK_FUNCTION( cdcd_serial_app_task ) (void* p_task_para)
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{
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OSAL_TASK_LOOP_BEGIN
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tusb_error_t error;
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osal_semaphore_wait(sem_hdl, OSAL_TIMEOUT_WAIT_FOREVER, &error);
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if ( tusbd_is_configured(0) )
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{
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// echo back data in the fifo
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if ( !tusbd_cdc_is_busy(0, CDC_PIPE_DATA_IN) )
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{
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uint16_t count=0;
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while( fifo_read(&fifo_serial, &serial_tx_buffer[count]) )
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{
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count++;
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}
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if (count)
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{
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tusbd_cdc_send(0, serial_tx_buffer, count, false);
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}
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}
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// getting more data from host
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tusbd_cdc_receive(0, serial_rx_buffer, CDCD_APP_BUFFER_SIZE, true);
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}
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OSAL_TASK_LOOP_END
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}
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#endif
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