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-rw-r--r--digital/ucoolib/ucoolib/hal/gpio/Module1
-rw-r--r--digital/ucoolib/ucoolib/hal/gpio/gpio.hh33
-rw-r--r--digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.cc85
-rw-r--r--digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.hh67
-rw-r--r--digital/ucoolib/ucoolib/hal/gpio/test/Makefile9
-rw-r--r--digital/ucoolib/ucoolib/hal/gpio/test/test_gpio.cc72
-rw-r--r--digital/ucoolib/ucoolib/intf/io.hh54
7 files changed, 321 insertions, 0 deletions
diff --git a/digital/ucoolib/ucoolib/hal/gpio/Module b/digital/ucoolib/ucoolib/hal/gpio/Module
new file mode 100644
index 00000000..34c77fd8
--- /dev/null
+++ b/digital/ucoolib/ucoolib/hal/gpio/Module
@@ -0,0 +1 @@
+hal_gpio_SOURCES = gpio.stm32f4.cc
diff --git a/digital/ucoolib/ucoolib/hal/gpio/gpio.hh b/digital/ucoolib/ucoolib/hal/gpio/gpio.hh
new file mode 100644
index 00000000..721d6383
--- /dev/null
+++ b/digital/ucoolib/ucoolib/hal/gpio/gpio.hh
@@ -0,0 +1,33 @@
+#ifndef ucoolib_hal_gpio_gpio_hh
+#define ucoolib_hal_gpio_gpio_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.
+//
+// }}}
+
+#ifdef TARGET_stm32f4
+# include "gpio.stm32f4.hh"
+#else
+# error "not implemented for this target"
+#endif
+
+#endif // ucoolib_hal_gpio_gpio_hh
diff --git a/digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.cc b/digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.cc
new file mode 100644
index 00000000..60f540c8
--- /dev/null
+++ b/digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.cc
@@ -0,0 +1,85 @@
+// 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 "gpio.stm32f4.hh"
+
+namespace ucoo {
+
+void
+Gpio::set ()
+{
+ GPIO_BSRR (port_) = mask_;
+}
+
+void
+Gpio::reset ()
+{
+ GPIO_BSRR (port_) = mask_ << 16;
+}
+
+/// Helper to avoid virtual dance.
+static inline void
+Gpio_set (uint32_t port, uint16_t mask, bool state)
+{
+ if (state)
+ GPIO_BSRR (port) = mask;
+ else
+ GPIO_BSRR (port) = mask << 16;
+}
+
+void
+Gpio::set (bool state)
+{
+ Gpio_set (port_, mask_, state);
+}
+
+void
+Gpio::toggle ()
+{
+ // Avoid read/modify/write ODR, to achieve atomic operation.
+ Gpio_set (port_, mask_, !(GPIO_ODR (port_) & mask_));
+}
+
+bool
+Gpio::get () const
+{
+ return GPIO_IDR (port_) & mask_;
+}
+
+void
+Gpio::input ()
+{
+ uint32_t mask = mask_;
+ uint32_t dmask = mask * mask;
+ GPIO_MODER (port_) &= ~(dmask | dmask << 1);
+}
+
+void
+Gpio::output ()
+{
+ uint32_t mask = mask_;
+ uint32_t dmask = mask * mask;
+ GPIO_MODER (port_) = (GPIO_MODER (port_) & ~(dmask << 1)) | dmask;
+}
+
+} // namespace ucoo
diff --git a/digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.hh b/digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.hh
new file mode 100644
index 00000000..75727c34
--- /dev/null
+++ b/digital/ucoolib/ucoolib/hal/gpio/gpio.stm32f4.hh
@@ -0,0 +1,67 @@
+#ifndef ucoolib_hal_gpio_gpio_stm32f4_hh
+#define ucoolib_hal_gpio_gpio_stm32f4_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/io.hh"
+
+#include <libopencm3/stm32/f4/gpio.h>
+
+namespace ucoo {
+
+/// General purpose input/output on STM32F4.
+class Gpio : public Io
+{
+ public:
+ /// Constructor, take the PORT base address, and pin BIT number.
+ Gpio (uint32_t port, int bit);
+ /// See Io::set.
+ void set ();
+ /// See Io::reset.
+ void reset ();
+ /// See Io::set.
+ void set (bool state);
+ /// See Io::toggle.
+ void toggle ();
+ /// See Io::get.
+ bool get () const;
+ /// See Io::input.
+ void input ();
+ /// See Io::output.
+ void output ();
+ private:
+ /// Port register base address.
+ const uint32_t port_;
+ /// IO bitmask.
+ const uint16_t mask_;
+};
+
+inline
+Gpio::Gpio (uint32_t port, int bit)
+ : port_ (port), mask_ (1u << bit)
+{
+}
+
+} // namespace ucoo
+
+#endif // ucoolib_hal_gpio_gpio_stm32f4_hh
diff --git a/digital/ucoolib/ucoolib/hal/gpio/test/Makefile b/digital/ucoolib/ucoolib/hal/gpio/test/Makefile
new file mode 100644
index 00000000..e2f76925
--- /dev/null
+++ b/digital/ucoolib/ucoolib/hal/gpio/test/Makefile
@@ -0,0 +1,9 @@
+BASE = ../../../..
+
+TARGETS = stm32f4
+stm32f4_PROGS = test_gpio
+test_gpio_SOURCES = test_gpio.cc
+
+MODULES = hal/gpio utils
+
+include $(BASE)/build/top.mk
diff --git a/digital/ucoolib/ucoolib/hal/gpio/test/test_gpio.cc b/digital/ucoolib/ucoolib/hal/gpio/test/test_gpio.cc
new file mode 100644
index 00000000..ca1dae36
--- /dev/null
+++ b/digital/ucoolib/ucoolib/hal/gpio/test/test_gpio.cc
@@ -0,0 +1,72 @@
+// 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/arch/arch.hh"
+#include "ucoolib/hal/gpio/gpio.hh"
+#include "ucoolib/utils/delay.hh"
+
+#include <libopencm3/stm32/f4/rcc.h>
+#include <libopencm3/stm32/f4/gpio.h>
+
+void
+test (ucoo::Io &loop_out, ucoo::Io &loop_in, ucoo::Io &led3, ucoo::Io &led4,
+ ucoo::Io &led5, ucoo::Io &led6)
+{
+ loop_in.input ();
+ loop_out.output ();
+ led3.output ();
+ led4.output ();
+ led5.output ();
+ led6.output ();
+ led3.set ();
+ led6.reset ();
+ bool state = false;
+ while (1)
+ {
+ led3.toggle ();
+ led4.set (state);
+ led5.set (loop_in.get ());
+ led6.toggle ();
+ state = !state;
+ loop_out.set (state);
+ ucoo::delay (1);
+ }
+}
+
+int
+main (int argc, const char **argv)
+{
+ ucoo::arch_init (argc, argv);
+ rcc_peripheral_enable_clock (&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN
+ | RCC_AHB1ENR_IOPDEN);
+ // For this test, shorten B6 & B7 to have loopback.
+ gpio_mode_setup (GPIOB, GPIO_MODE_INPUT, GPIO_PUPD_PULLUP, GPIO7);
+ ucoo::Gpio loop_out (GPIOB, 6);
+ ucoo::Gpio loop_in (GPIOB, 7);
+ ucoo::Gpio led3 (GPIOD, 13);
+ ucoo::Gpio led4 (GPIOD, 12);
+ ucoo::Gpio led5 (GPIOD, 14);
+ ucoo::Gpio led6 (GPIOD, 15);
+ test (loop_out, loop_in, led3, led4, led5, led6);
+ return 0;
+}
diff --git a/digital/ucoolib/ucoolib/intf/io.hh b/digital/ucoolib/ucoolib/intf/io.hh
new file mode 100644
index 00000000..ebb5e75e
--- /dev/null
+++ b/digital/ucoolib/ucoolib/intf/io.hh
@@ -0,0 +1,54 @@
+#ifndef ucoolib_ucoolib_intf_io_hh
+#define ucoolib_ucoolib_intf_io_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 {
+
+/// One bit input/output interface.
+class Io
+{
+ public:
+ /// Set output to 1.
+ virtual void set () = 0;
+ /// Reset output to 0.
+ virtual void reset () = 0;
+ /// Set or reset output.
+ virtual void set (bool state) = 0;
+ /// Toggle output.
+ virtual void toggle () = 0;
+ /// Get input state (not the same as output latch!).
+ virtual bool get () const = 0;
+ /// Set as input.
+ virtual void input () = 0;
+ /// Set as output.
+ virtual void output () = 0;
+ protected:
+ /// Default constructor.
+ Io () { }
+};
+
+} // namespace ucoo
+
+#endif // ucoolib_ucoolib_intf_io_hh