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-rw-r--r--digital/ucoolib/ucoolib/intf/spi_master.cc48
-rw-r--r--digital/ucoolib/ucoolib/intf/spi_master.hh70
2 files changed, 118 insertions, 0 deletions
diff --git a/digital/ucoolib/ucoolib/intf/spi_master.cc b/digital/ucoolib/ucoolib/intf/spi_master.cc
new file mode 100644
index 00000000..cec1231b
--- /dev/null
+++ b/digital/ucoolib/ucoolib/intf/spi_master.cc
@@ -0,0 +1,48 @@
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2013 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 "spi_master.hh"
+
+namespace ucoo {
+
+char
+SpiMaster::send_and_recv (char tx)
+{
+ char rx;
+ send_and_recv (&tx, &rx, 1);
+ return rx;
+}
+
+void
+SpiMaster::send (char tx)
+{
+ send_and_recv (tx);
+}
+
+char
+SpiMaster::recv ()
+{
+ return send_and_recv (0);
+}
+
+} // namespace ucoo
diff --git a/digital/ucoolib/ucoolib/intf/spi_master.hh b/digital/ucoolib/ucoolib/intf/spi_master.hh
new file mode 100644
index 00000000..63e0b95c
--- /dev/null
+++ b/digital/ucoolib/ucoolib/intf/spi_master.hh
@@ -0,0 +1,70 @@
+#ifndef ucoolib_intf_spi_master_hh
+#define ucoolib_intf_spi_master_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.
+//
+// }}}
+
+namespace ucoo {
+
+/// SPI clock polarity and phase modes.
+enum SpiMode
+{
+ /// Mode 0, sample on rising edge, setup on falling edge.
+ SPI_MODE_0,
+ /// Mode 1, setup on rising edge, sample on falling edge.
+ SPI_MODE_1,
+ /// Mode 2, sample on falling edge, setup on rising edge.
+ SPI_MODE_2,
+ /// Mode 3, setup on falling edge, sample on rising edge.
+ SPI_MODE_3,
+};
+
+/// Interface to the master side of an SPI bus. Do not handle slave select,
+/// this should be done with a regular IO.
+class SpiMaster
+{
+ public:
+ /// Send and receive COUNT bytes of data. Send data from TX_BUF, store
+ /// received data in RX_BUF. TX_BUF and RX_BUF can be the same memory.
+ virtual void send_and_recv (const char *tx_buf, char *rx_buf, int count)
+ = 0;
+ /// Send and receive one byte, shortcut.
+ virtual char send_and_recv (char tx);
+ /// Send, and ignore received data. Same as send_and_recv, but received
+ /// data is discarded.
+ virtual void send (const char *tx_buf, int count) = 0;
+ /// Send one byte, shortcut.
+ virtual void send (char tx);
+ /// Send zeros, and receive data. Same as send_and_recv, but transmit
+ /// zeros.
+ virtual void recv (char *rx_buf, int count) = 0;
+ /// Receive one byte, shortcut.
+ virtual char recv ();
+ protected:
+ /// Default constructor.
+ SpiMaster () { }
+};
+
+} // namespace ucoo
+
+#endif // ucoolib_intf_spi_master_hh