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authorNicolas Schodet2015-08-31 16:34:59 +0200
committerNicolas Schodet2019-10-07 00:44:50 +0200
commitde2813fdf0f80c278261cf6a996077cd380ee25a (patch)
tree57bb096deffd5f648ad2b2616f2165011bd97be0 /ucoo/hal/timer
parentddc7820ad411832e83ca0b7fe3b2e2a90a07c066 (diff)
ucoo/hal/timer: very simple timer driver
Diffstat (limited to 'ucoo/hal/timer')
-rw-r--r--ucoo/hal/timer/Module1
-rw-r--r--ucoo/hal/timer/test/Makefile9
-rw-r--r--ucoo/hal/timer/test/test_timer.cc41
-rw-r--r--ucoo/hal/timer/timer.hh51
-rw-r--r--ucoo/hal/timer/timer.stm32.hh49
-rw-r--r--ucoo/hal/timer/timer.stm32.tcc80
6 files changed, 231 insertions, 0 deletions
diff --git a/ucoo/hal/timer/Module b/ucoo/hal/timer/Module
new file mode 100644
index 0000000..245ea27
--- /dev/null
+++ b/ucoo/hal/timer/Module
@@ -0,0 +1 @@
+ucoo_hal_timer_SOURCES :=
diff --git a/ucoo/hal/timer/test/Makefile b/ucoo/hal/timer/test/Makefile
new file mode 100644
index 0000000..284ad18
--- /dev/null
+++ b/ucoo/hal/timer/test/Makefile
@@ -0,0 +1,9 @@
+BASE = ../../../..
+
+TARGETS = stm32f4
+PROGS = test_timer
+test_timer_SOURCES = test_timer.cc
+
+MODULES = ucoo/base/test ucoo/hal/timer ucoo/hal/usb ucoo/utils
+
+include $(BASE)/build/top.mk
diff --git a/ucoo/hal/timer/test/test_timer.cc b/ucoo/hal/timer/test/test_timer.cc
new file mode 100644
index 0000000..9002a28
--- /dev/null
+++ b/ucoo/hal/timer/test/test_timer.cc
@@ -0,0 +1,41 @@
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2015 Nicolas Schodet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// }}}
+#include "ucoo/base/test/test.hh"
+#include "ucoo/arch/arch.hh"
+#include "ucoo/hal/timer/timer.hh"
+
+#include <cstdio>
+#include <cinttypes>
+
+int
+main (int argc, const char **argv)
+{
+ ucoo::arch_init (argc, argv);
+ ucoo::test_stream_setup ();
+ ucoo::TimerHard<TIM2> timer;
+ timer.enable (1000);
+ while (1)
+ printf ("%" PRIu32 "\n", timer.get_value ());
+}
+
diff --git a/ucoo/hal/timer/timer.hh b/ucoo/hal/timer/timer.hh
new file mode 100644
index 0000000..ab0fa18
--- /dev/null
+++ b/ucoo/hal/timer/timer.hh
@@ -0,0 +1,51 @@
+#ifndef ucoo_hal_timer_timer_hh
+#define ucoo_hal_timer_timer_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2015 Nicolas Schodet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// }}}
+
+#if defined TARGET_stm32
+# include "timer.stm32.hh"
+#else
+# error "not implemented for this target"
+#endif
+
+namespace ucoo {
+
+/// Use a timer as a trace time stamp.
+template<typename Timer>
+struct TimerTraceTimestamp
+{
+ struct Entry
+ {
+ uint32_t timestamp;
+ };
+ void operator () (Entry &e)
+ {
+ e.timestamp = Timer::get_value ();
+ }
+};
+
+} // namespace ucoo
+
+#endif // ucoo_hal_timer_timer_hh
diff --git a/ucoo/hal/timer/timer.stm32.hh b/ucoo/hal/timer/timer.stm32.hh
new file mode 100644
index 0000000..414a687
--- /dev/null
+++ b/ucoo/hal/timer/timer.stm32.hh
@@ -0,0 +1,49 @@
+#ifndef ucoo_hal_timer_timer_stm32_hh
+#define ucoo_hal_timer_timer_stm32_hh
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2015 Nicolas Schodet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// }}}
+#include "ucoo/common.hh"
+
+namespace ucoo {
+
+/// STM32 timer very basic support.
+template<uint32_t Base>
+class TimerHard
+{
+ public:
+ /// Destructor, disable.
+ ~TimerHard ();
+ /// Enable timer.
+ void enable (int freq);
+ /// Disable timer.
+ void disable ();
+ /// Read timer current value.
+ static uint32_t get_value ();
+};
+
+} // namespace ucoo
+
+#include "ucoo/hal/timer/timer.stm32.tcc"
+
+#endif // ucoo_hal_timer_timer_stm32_hh
diff --git a/ucoo/hal/timer/timer.stm32.tcc b/ucoo/hal/timer/timer.stm32.tcc
new file mode 100644
index 0000000..6572424
--- /dev/null
+++ b/ucoo/hal/timer/timer.stm32.tcc
@@ -0,0 +1,80 @@
+#ifndef ucoo_hal_timer_timer_stm32_tcc
+#define ucoo_hal_timer_timer_stm32_tcc
+// ucoolib - Microcontroller object oriented library. {{{
+//
+// Copyright (C) 2015 Nicolas Schodet
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+// }}}
+#include <libopencm3/stm32/timer.h>
+#include <libopencm3/stm32/rcc.h>
+
+namespace ucoo {
+
+template<uint32_t Base>
+struct TimerHardware { };
+
+template<>
+struct TimerHardware<TIM2>
+{
+ static const enum rcc_periph_clken clken = RCC_TIM2;
+ // TODO timer uses a double frequency only if APB prescaler is not 1.
+ static int freq () { return 2 * rcc_apb1_frequency; }
+};
+
+template<uint32_t Base>
+TimerHard<Base>::~TimerHard ()
+{
+ disable ();
+}
+
+template<uint32_t Base>
+void
+TimerHard<Base>::enable (int freq)
+{
+ rcc_periph_clock_enable (TimerHardware<Base>::clken);
+ int in_freq = TimerHardware<Base>::freq ();
+ int div = in_freq / freq;
+ assert (div <= 0x10000 && in_freq / div == freq);
+ TIM_CR1 (Base) = 0;
+ TIM_PSC (Base) = div - 1;
+ TIM_ARR (Base) = 0xffffffff;
+ TIM_EGR (Base) = TIM_EGR_UG;
+ TIM_CR1 (Base) = TIM_CR1_CEN;
+}
+
+template<uint32_t Base>
+void
+TimerHard<Base>::disable ()
+{
+ TIM_CR1 (Base) = 0;
+ rcc_periph_clock_disable (TimerHardware<Base>::clken);
+}
+
+template<uint32_t Base>
+uint32_t
+TimerHard<Base>::get_value ()
+{
+ return TIM_CNT (Base);
+}
+
+} // namespace ucoo
+
+#endif // ucoo_hal_timer_timer_stm32_tcc