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authorNicolas Schodet2012-11-02 22:47:12 +0100
committerNicolas Schodet2012-11-02 22:47:12 +0100
commitd460aec6700de247640affc3142d46c604b39ce0 (patch)
tree46bd9a1152b1a09e362e11976006607bf747b949 /digital/ucoolib/ucoolib/hal/usb/usb.stm32.hh
parent8207c14ce5241c7515c213901417ea8f6b7485e8 (diff)
digital/ucoolib/ucoolib/hal/usb: add UsbStream
Diffstat (limited to 'digital/ucoolib/ucoolib/hal/usb/usb.stm32.hh')
-rw-r--r--digital/ucoolib/ucoolib/hal/usb/usb.stm32.hh96
1 files changed, 96 insertions, 0 deletions
diff --git a/digital/ucoolib/ucoolib/hal/usb/usb.stm32.hh b/digital/ucoolib/ucoolib/hal/usb/usb.stm32.hh
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+++ b/digital/ucoolib/ucoolib/hal/usb/usb.stm32.hh
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+#ifndef ucoolib_hal_usb_usb_stm32_hh
+#define ucoolib_hal_usb_usb_stm32_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2012 Nicolas Schodet
+//
+// APBTeam:
+// Web: http://apbteam.org/
+// Email: team AT apbteam DOT org
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+//
+// }}}
+#include "ucoolib/intf/stream.hh"
+#include "ucoolib/common.hh"
+
+#include "config/hal/usb.hh"
+
+namespace ucoo {
+
+class UsbStream;
+
+/// Top control class for an USB device. This is a limited implementation
+/// which fulfill most of our needs: one or more interfaces, each of them is
+/// handled as a character stream. This should be instantiated only once.
+class UsbStreamControl
+{
+ public:
+ /// Construct a new USB control object, with given VENDOR and PRODUCT
+ /// strings.
+ UsbStreamControl (const char *vendor, const char *product);
+ /// Return true if the device is configured. This means that the
+ /// connection is done with the host and data can be exchanged.
+ bool is_configured () const { return configured_; }
+ private:
+ /// Called by USB stack when device is configured. This is expected to
+ /// setup endpoints.
+ static void set_config (uint16_t wValue);
+ /// Called by USB stack when a frame is received on a OUT endpoint.
+ static void rx_callback (uint8_t ep);
+ private:
+ /// Size of endpoints.
+ static const int ep_size_ = UCOO_CONFIG_HAL_USB_EP_SIZE;
+ /// Number of streams (also interfaces or pair of endpoints).
+ static const int stream_nb_ = UCOO_CONFIG_HAL_USB_STREAM_NB;
+ /// Pointer to the one and only instance.
+ static UsbStreamControl *instance_;
+ /// Whether device is currently configured.
+ bool configured_;
+ /// Internal RX buffer type.
+ struct RxBuffer
+ {
+ char buf[ep_size_];
+ int size, offset;
+ RxBuffer (void);
+ };
+ /// Internal RX buffer, one per stream.
+ RxBuffer rx_buffer_[stream_nb_];
+ friend class UsbStream;
+};
+
+/// One USB stream, instantiated for each stream, interface, or pair of
+/// endpoints.
+class UsbStream : public Stream
+{
+ public:
+ /// Construct from control object and stream index.
+ UsbStream (UsbStreamControl &control, int num);
+ /// See Stream::read.
+ int read (char *buf, int count);
+ /// See Stream::write.
+ int write (const char *buf, int count);
+ /// See Stream::poll.
+ int poll ();
+ private:
+ /// Reference to control object.
+ UsbStreamControl &control_;
+ /// Stream index.
+ int num_;
+};
+
+} // namespace ucoo
+
+#endif // ucoolib_hal_usb_usb_stm32_hh