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e16be98224
The CDC layer on F1, F3 and F4 now always acts like an infinte data sink whenever *either* there is no DTE present (ie. no terminal program listening) *or* the USB cable is disconnected. F1 and F4 were previously checking the cable but not the DTE. F3 didn't check anything. The COM layer didn't even ask the lower layers. All of this used to mean that any time a caller did a blocking send to a CDC device without a DTE, it would eventually block for up to a 5s timeout waiting for space in the Tx buffer. Conflicts: flight/PiOS/STM32F30x/pios_usb_cdc.c
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
/**
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******************************************************************************
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* @addtogroup PIOS PIOS Core hardware abstraction layer
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* @{
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* @addtogroup PIOS_USB_COM USB CDC COM layer functions
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* @brief Hardware communication layer
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* @{
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*
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* @file pios_usb_cdc_priv.h
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* @author The OpenPilot Team, http://www.openpilot.org Copyright (C) 2010.
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* @brief USB COM CDC private definitions.
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* @see The GNU Public License (GPL) Version 3
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*
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*****************************************************************************/
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/*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef PIOS_USB_CDC_PRIV_H
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#define PIOS_USB_CDC_PRIV_H
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struct pios_usb_cdc_cfg {
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uint8_t ctrl_if;
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uint8_t ctrl_tx_ep;
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uint8_t data_if;
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uint8_t data_rx_ep;
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uint8_t data_tx_ep;
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};
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extern const struct pios_com_driver pios_usb_cdc_com_driver;
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extern int32_t PIOS_USB_CDC_Init(uint32_t * usbcdc_id, const struct pios_usb_cdc_cfg * cfg, uint32_t lower_id);
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/* From USB CDC Spec Section 6.2.14 SetControlLineState */
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#define USB_CDC_CONTROL_LINE_STATE_DTE_PRESENT 0x01
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#endif /* PIOS_USB_CDC_PRIV_H */
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/**
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* @}
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* @}
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*/
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