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initial commit before we edit this git repo

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We are about to update the us_ticker.c implementation
so that we can gain increased granularity for the
all timer related classes.
master
James Devine 7 years ago
commit 93df986f58
3816 changed files with 1862154 additions and 0 deletions
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117
CMakeLists.txt
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#
# mbed-2 yotta-compatible build system
#
# make sure necessary features are enabled:
project(mbed-classic)
enable_language(ASM)
# override compilation flags:
if(CMAKE_C_COMPILER_ID MATCHES GNU)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99")
endif()
# the mbed.a library is built from two sets of source files + include
# directories:
#
# MBED_COMMON_SOURCES: the source files that are the same for all targets,
# these are easily found by globbing:
#
file(GLOB MBED_COMMON_SOURCES "common/*.cpp" "common/*.c")
#
# (always include the hal header directory, too)
set(MBED_COMMON_INCLUDE_DIRS "hal")
# and MBED_TARGET_SOURCES: these depend on which target we are building for. To
# find these we need to walk the directories in targets/, and wherever we see a
# TARGET_<something> name, recurse only if <something> matches what we're
# currently building for
macro(mbed_find_target_dirs PARENT_DIRECTORY SOURCES_LIST INCLUDES_LIST)
# append this directory to the search path:
list(APPEND ${INCLUDES_LIST} "${PARENT_DIRECTORY}")
# add all source files in this directory to the sources list:
file(GLOB sources "${PARENT_DIRECTORY}/*.cpp" "${PARENT_DIRECTORY}/*.c" "${PARENT_DIRECTORY}/*.s" "${PARENT_DIRECTORY}/*.S" )
list(APPEND ${SOURCES_LIST} ${sources})
# get a list of all subdirectories that we want to recurse into:
file(GLOB dir_children RELATIVE "${PARENT_DIRECTORY}" "${PARENT_DIRECTORY}/*")
set(matching_subdirs "")
foreach(child ${dir_children})
if(IS_DIRECTORY "${PARENT_DIRECTORY}/${child}")
# is this directory name a magic one?
if("${child}" MATCHES "^TARGET_")
# target-magic: recurse if the MBED_LEGACY_TARGET_DEFINITIONS **list**
# contains a matching value:
foreach(legacy_magic_def ${MBED_LEGACY_TARGET_DEFINITIONS})
# we could probably unroll the list into a single regex if
# this is a performance problem:
if("${child}" MATCHES "^TARGET_${legacy_magic_def}$")
list(APPEND matching_subdirs ${child})
break()
endif()
endforeach()
elseif("${child}" MATCHES "^TOOLCHAIN_")
# toolchain-magic: (recurse if the MBED_LEGACY_TOOLCHAIN matches
# this name)
if("${child}" MATCHES "^TOOLCHAIN_${MBED_LEGACY_TOOLCHAIN}$")
list(APPEND matching_subdirs "${child}")
endif()
else()
# not special: always recurse into this directory
list(APPEND matching_subdirs "${child}")
endif()
endif()
endforeach()
#message("matching_subdirs: ${matching_subdirs}")
# recurse:
foreach(subdir ${matching_subdirs})
mbed_find_target_dirs("${PARENT_DIRECTORY}/${subdir}" ${SOURCES_LIST} ${INCLUDES_LIST})
endforeach()
endmacro()
set(MBED_TARGET_SOURCES "")
set(MBED_TARGET_INCLUDE_DIRS "")
mbed_find_target_dirs("${CMAKE_CURRENT_SOURCE_DIR}/targets" MBED_TARGET_SOURCES MBED_TARGET_INCLUDE_DIRS)
#message("found target sources: ${MBED_TARGET_SOURCES}")
#message("found target include dirs: ${MBED_TARGET_INCLUDE_DIRS}")
# unfortunately, for ARMCC, the startup code needs to be provided as an object
# on the command line (not as part of an archive). To do this we override the
# CMake add_executable command.
if(CMAKE_C_COMPILER_ID STREQUAL "ARMCC")
set(MBED_TARGET_STARTUP_CODE_SOURCES "")
foreach(src ${MBED_TARGET_SOURCES})
if("${src}" MATCHES .*startup_.*\\.[sS])
LIST(APPEND MBED_TARGET_STARTUP_CODE_SOURCES "${src}")
endif()
endforeach()
add_library(mbed_classic_startupcod OBJECT ${MBED_TARGET_STARTUP_CODE_SOURCES})
macro (add_executable _name)
_add_executable(${ARGV} $<TARGET_OBJECTS:mbed_classic_startupcod>)
endmacro()
endif()
# we have to append any target-specific include dirs to the global include dirs
# list, so that any indirect includes (e.g. via mbed.h) of files in those
# directories will work:
# (non-target-specific include dirs are listed in extraIncludes in module.json)
foreach(dir ${MBED_TARGET_INCLUDE_DIRS})
set_property(GLOBAL APPEND PROPERTY YOTTA_GLOBAL_INCLUDE_DIRS ${dir})
endforeach()
# finally, we can construct a library using the determined set of include paths
# + source files. Note that the library name must match the name of the yotta
# module (defined in module.json) for this module to link properly with other
# yotta modules.
include_directories(${MBED_COMMON_INCLUDE_DIRS})
include_directories(${MBED_TARGET_INCLUDE_DIRS})
add_library(mbed-classic
${MBED_COMMON_SOURCES}
${MBED_TARGET_SOURCES}
)
if(CMAKE_COMPILER_IS_GNUCC)
target_link_libraries(mbed-classic
-lnosys
)
endif()

103
api/AnalogIn.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_ANALOGIN_H
#define MBED_ANALOGIN_H
#include "platform.h"
#if DEVICE_ANALOGIN
#include "analogin_api.h"
namespace mbed {
/** An analog input, used for reading the voltage on a pin
*
* Example:
* @code
* // Print messages when the AnalogIn is greater than 50%
*
* #include "mbed.h"
*
* AnalogIn temperature(p20);
*
* int main() {
* while(1) {
* if(temperature > 0.5) {
* printf("Too hot! (%f)", temperature.read());
* }
* }
* }
* @endcode
*/
class AnalogIn {
public:
/** Create an AnalogIn, connected to the specified pin
*
* @param pin AnalogIn pin to connect to
* @param name (optional) A string to identify the object
*/
AnalogIn(PinName pin) {
analogin_init(&_adc, pin);
}
/** Read the input voltage, represented as a float in the range [0.0, 1.0]
*
* @returns A floating-point value representing the current input voltage, measured as a percentage
*/
float read() {
return analogin_read(&_adc);
}
/** Read the input voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
*
* @returns
* 16-bit unsigned short representing the current input voltage, normalised to a 16-bit value
*/
unsigned short read_u16() {
return analogin_read_u16(&_adc);
}
#ifdef MBED_OPERATORS
/** An operator shorthand for read()
*
* The float() operator can be used as a shorthand for read() to simplify common code sequences
*
* Example:
* @code
* float x = volume.read();
* float x = volume;
*
* if(volume.read() > 0.25) { ... }
* if(volume > 0.25) { ... }
* @endcode
*/
operator float() {
return read();
}
#endif
protected:
analogin_t _adc;
};
} // namespace mbed
#endif
#endif

121
api/AnalogOut.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_ANALOGOUT_H
#define MBED_ANALOGOUT_H
#include "platform.h"
#if DEVICE_ANALOGOUT
#include "analogout_api.h"
namespace mbed {
/** An analog output, used for setting the voltage on a pin
*
* Example:
* @code
* // Make a sawtooth output
*
* #include "mbed.h"
*
* AnalogOut tri(p18);
* int main() {
* while(1) {
* tri = tri + 0.01;
* wait_us(1);
* if(tri == 1) {
* tri = 0;
* }
* }
* }
* @endcode
*/
class AnalogOut {
public:
/** Create an AnalogOut connected to the specified pin
*
* @param AnalogOut pin to connect to (18)
*/
AnalogOut(PinName pin) {
analogout_init(&_dac, pin);
}
/** Set the output voltage, specified as a percentage (float)
*
* @param value A floating-point value representing the output voltage,
* specified as a percentage. The value should lie between
* 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
* Values outside this range will be saturated to 0.0f or 1.0f.
*/
void write(float value) {
analogout_write(&_dac, value);
}
/** Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF]
*
* @param value 16-bit unsigned short representing the output voltage,
* normalised to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v)
*/
void write_u16(unsigned short value) {
analogout_write_u16(&_dac, value);
}
/** Return the current output voltage setting, measured as a percentage (float)
*
* @returns
* A floating-point value representing the current voltage being output on the pin,
* measured as a percentage. The returned value will lie between
* 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).
*
* @note
* This value may not match exactly the value set by a previous write().
*/
float read() {
return analogout_read(&_dac);
}
#ifdef MBED_OPERATORS
/** An operator shorthand for write()
*/
AnalogOut& operator= (float percent) {
write(percent);
return *this;
}
AnalogOut& operator= (AnalogOut& rhs) {
write(rhs.read());
return *this;
}
/** An operator shorthand for read()
*/
operator float() {
return read();
}
#endif
protected:
dac_t _dac;
};
} // namespace mbed
#endif
#endif

98
api/BusIn.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_BUSIN_H
#define MBED_BUSIN_H
#include "platform.h"
#include "DigitalIn.h"
namespace mbed {
/** A digital input bus, used for reading the state of a collection of pins
*/
class BusIn {
public:
/* Group: Configuration Methods */
/** Create an BusIn, connected to the specified pins
*
* @param <n> DigitalIn pin to connect to bus bit <n> (p5-p30, NC)
*
* @note
* It is only required to specify as many pin variables as is required
* for the bus; the rest will default to NC (not connected)
*/
BusIn(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
BusIn(PinName pins[16]);
virtual ~BusIn();
/** Read the value of the input bus
*
* @returns
* An integer with each bit corresponding to the value read from the associated DigitalIn pin
*/
int read();
/** Set the input pin mode
*
* @param mode PullUp, PullDown, PullNone
*/
void mode(PinMode pull);
/** Binary mask of bus pins connected to actual pins (not NC pins)
* If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
*
* @returns
* Binary mask of connected pins
*/
int mask() {
return _nc_mask;
}
#ifdef MBED_OPERATORS
/** A shorthand for read()
*/
operator int();
/** Access to particular bit in random-iterator fashion
*/
DigitalIn & operator[] (int index);
#endif
protected:
DigitalIn* _pin[16];
/** Mask of bus's NC pins
* If bit[n] is set to 1 - pin is connected
* if bit[n] is cleared - pin is not connected (NC)
*/
int _nc_mask;
/* disallow copy constructor and assignment operators */
private:
BusIn(const BusIn&);
BusIn & operator = (const BusIn&);
};
} // namespace mbed
#endif

117
api/BusInOut.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_BUSINOUT_H
#define MBED_BUSINOUT_H
#include "DigitalInOut.h"
namespace mbed {
/** A digital input output bus, used for setting the state of a collection of pins
*/
class BusInOut {
public:
/** Create an BusInOut, connected to the specified pins
*
* @param p<n> DigitalInOut pin to connect to bus bit p<n> (p5-p30, NC)
*
* @note
* It is only required to specify as many pin variables as is required
* for the bus; the rest will default to NC (not connected)
*/
BusInOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
BusInOut(PinName pins[16]);
virtual ~BusInOut();
/* Group: Access Methods */
/** Write the value to the output bus
*
* @param value An integer specifying a bit to write for every corresponding DigitalInOut pin
*/
void write(int value);
/** Read the value currently output on the bus
*
* @returns
* An integer with each bit corresponding to associated DigitalInOut pin setting
*/
int read();
/** Set as an output
*/
void output();
/** Set as an input
*/
void input();
/** Set the input pin mode
*
* @param mode PullUp, PullDown, PullNone
*/
void mode(PinMode pull);
/** Binary mask of bus pins connected to actual pins (not NC pins)
* If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
*
* @returns
* Binary mask of connected pins
*/
int mask() {
return _nc_mask;
}
#ifdef MBED_OPERATORS
/** A shorthand for write()
*/
BusInOut& operator= (int v);
BusInOut& operator= (BusInOut& rhs);
/** Access to particular bit in random-iterator fashion
*/
DigitalInOut& operator[] (int index);
/** A shorthand for read()
*/
operator int();
#endif
protected:
DigitalInOut* _pin[16];
/** Mask of bus's NC pins
* If bit[n] is set to 1 - pin is connected
* if bit[n] is cleared - pin is not connected (NC)
*/
int _nc_mask;
/* disallow copy constructor and assignment operators */
private:
BusInOut(const BusInOut&);
BusInOut & operator = (const BusInOut&);
};
} // namespace mbed
#endif

101
api/BusOut.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_BUSOUT_H
#define MBED_BUSOUT_H
#include "DigitalOut.h"
namespace mbed {
/** A digital output bus, used for setting the state of a collection of pins
*/
class BusOut {
public:
/** Create an BusOut, connected to the specified pins
*
* @param p<n> DigitalOut pin to connect to bus bit <n> (p5-p30, NC)
*
* @note
* It is only required to specify as many pin variables as is required
* for the bus; the rest will default to NC (not connected)
*/
BusOut(PinName p0, PinName p1 = NC, PinName p2 = NC, PinName p3 = NC,
PinName p4 = NC, PinName p5 = NC, PinName p6 = NC, PinName p7 = NC,
PinName p8 = NC, PinName p9 = NC, PinName p10 = NC, PinName p11 = NC,
PinName p12 = NC, PinName p13 = NC, PinName p14 = NC, PinName p15 = NC);
BusOut(PinName pins[16]);
virtual ~BusOut();
/** Write the value to the output bus
*
* @param value An integer specifying a bit to write for every corresponding DigitalOut pin
*/
void write(int value);
/** Read the value currently output on the bus
*
* @returns
* An integer with each bit corresponding to associated DigitalOut pin setting
*/
int read();
/** Binary mask of bus pins connected to actual pins (not NC pins)
* If bus pin is in NC state make corresponding bit will be cleared (set to 0), else bit will be set to 1
*
* @returns
* Binary mask of connected pins
*/
int mask() {
return _nc_mask;
}
#ifdef MBED_OPERATORS
/** A shorthand for write()
*/
BusOut& operator= (int v);
BusOut& operator= (BusOut& rhs);
/** Access to particular bit in random-iterator fashion
*/
DigitalOut& operator[] (int index);
/** A shorthand for read()
*/
operator int();
#endif
protected:
DigitalOut* _pin[16];
/** Mask of bus's NC pins
* If bit[n] is set to 1 - pin is connected
* if bit[n] is cleared - pin is not connected (NC)
*/
int _nc_mask;
/* disallow copy constructor and assignment operators */
private:
BusOut(const BusOut&);
BusOut & operator = (const BusOut&);
};
} // namespace mbed
#endif

243
api/CAN.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_CAN_H
#define MBED_CAN_H
#include "platform.h"
#if DEVICE_CAN
#include "can_api.h"
#include "can_helper.h"
#include "FunctionPointer.h"
namespace mbed {
/** CANMessage class
*/
class CANMessage : public CAN_Message {
public:
/** Creates empty CAN message.
*/
CANMessage() : CAN_Message() {
len = 8;
type = CANData;
format = CANStandard;
id = 0;
memset(data, 0, 8);
}
/** Creates CAN message with specific content.
*/
CANMessage(int _id, const char *_data, char _len = 8, CANType _type = CANData, CANFormat _format = CANStandard) {
len = _len & 0xF;
type = _type;
format = _format;
id = _id;
memcpy(data, _data, _len);
}
/** Creates CAN remote message.
*/
CANMessage(int _id, CANFormat _format = CANStandard) {
len = 0;
type = CANRemote;
format = _format;
id = _id;
memset(data, 0, 8);
}
};
/** A can bus client, used for communicating with can devices
*/
class CAN {
public:
/** Creates an CAN interface connected to specific pins.
*
* @param rd read from transmitter
* @param td transmit to transmitter
*
* Example:
* @code
* #include "mbed.h"
*
* Ticker ticker;
* DigitalOut led1(LED1);
* DigitalOut led2(LED2);
* CAN can1(p9, p10);
* CAN can2(p30, p29);
*
* char counter = 0;
*
* void send() {
* if(can1.write(CANMessage(1337, &counter, 1))) {
* printf("Message sent: %d\n", counter);
* counter++;
* }
* led1 = !led1;
* }
*
* int main() {
* ticker.attach(&send, 1);
* CANMessage msg;
* while(1) {
* if(can2.read(msg)) {
* printf("Message received: %d\n\n", msg.data[0]);
* led2 = !led2;
* }
* wait(0.2);
* }
* }
* @endcode
*/
CAN(PinName rd, PinName td);
virtual ~CAN();
/** Set the frequency of the CAN interface
*
* @param hz The bus frequency in hertz
*
* @returns
* 1 if successful,
* 0 otherwise
*/
int frequency(int hz);
/** Write a CANMessage to the bus.
*
* @param msg The CANMessage to write.
*
* @returns
* 0 if write failed,
* 1 if write was successful
*/
int write(CANMessage msg);
/** Read a CANMessage from the bus.
*
* @param msg A CANMessage to read to.
* @param handle message filter handle (0 for any message)
*
* @returns
* 0 if no message arrived,
* 1 if message arrived
*/
int read(CANMessage &msg, int handle = 0);
/** Reset CAN interface.
*
* To use after error overflow.
*/
void reset();
/** Puts or removes the CAN interface into silent monitoring mode
*
* @param silent boolean indicating whether to go into silent mode or not
*/
void monitor(bool silent);
enum Mode {
Reset = 0,
Normal,
Silent,
LocalTest,
GlobalTest,
SilentTest
};
/** Change CAN operation to the specified mode
*
* @param mode The new operation mode (CAN::Normal, CAN::Silent, CAN::LocalTest, CAN::GlobalTest, CAN::SilentTest)
*
* @returns
* 0 if mode change failed or unsupported,
* 1 if mode change was successful
*/
int mode(Mode mode);
/** Filter out incomming messages
*
* @param id the id to filter on
* @param mask the mask applied to the id
* @param format format to filter on (Default CANAny)
* @param handle message filter handle (Optional)
*
* @returns
* 0 if filter change failed or unsupported,
* new filter handle if successful
*/
int filter(unsigned int id, unsigned int mask, CANFormat format = CANAny, int handle = 0);
/** Returns number of read errors to detect read overflow errors.
*/
unsigned char rderror();
/** Returns number of write errors to detect write overflow errors.
*/
unsigned char tderror();
enum IrqType {
RxIrq = 0,
TxIrq,
EwIrq,
DoIrq,
WuIrq,
EpIrq,
AlIrq,
BeIrq,
IdIrq
};
/** Attach a function to call whenever a CAN frame received interrupt is
* generated.
*
* @param fptr A pointer to a void function, or 0 to set as none
* @param event Which CAN interrupt to attach the member function to (CAN::RxIrq for message received, CAN::TxIrq for transmitted or aborted, CAN::EwIrq for error warning, CAN::DoIrq for data overrun, CAN::WuIrq for wake-up, CAN::EpIrq for error passive, CAN::AlIrq for arbitration lost, CAN::BeIrq for bus error)
*/
void attach(void (*fptr)(void), IrqType type=RxIrq);
/** Attach a member function to call whenever a CAN frame received interrupt
* is generated.
*
* @param tptr pointer to the object to call the member function on
* @param mptr pointer to the member function to be called
* @param event Which CAN interrupt to attach the member function to (CAN::RxIrq for message received, TxIrq for transmitted or aborted, EwIrq for error warning, DoIrq for data overrun, WuIrq for wake-up, EpIrq for error passive, AlIrq for arbitration lost, BeIrq for bus error)
*/
template<typename T>
void attach(T* tptr, void (T::*mptr)(void), IrqType type=RxIrq) {
if((mptr != NULL) && (tptr != NULL)) {
_irq[type].attach(tptr, mptr);
can_irq_set(&_can, (CanIrqType)type, 1);
}
else {
can_irq_set(&_can, (CanIrqType)type, 0);
}
}
static void _irq_handler(uint32_t id, CanIrqType type);
protected:
can_t _can;
FunctionPointer _irq[9];
};
} // namespace mbed
#endif
#endif // MBED_CAN_H

202
api/CThunk.h
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/* General C++ Object Thunking class
*
* - allows direct callbacks to non-static C++ class functions
* - keeps track for the corresponding class instance
* - supports an optional context parameter for the called function
* - ideally suited for class object receiving interrupts (NVIC_SetVector)
*
* Copyright (c) 2014-2015 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __CTHUNK_H__
#define __CTHUNK_H__
#define CTHUNK_ADDRESS 1
#if defined(__CORTEX_M3) || defined(__CORTEX_M4) || defined(__thumb2__)
#define CTHUNK_VARIABLES volatile uint32_t code[1]
/**
* CTHUNK disassembly for Cortex-M3/M4 (thumb2):
* * ldm.w pc,{r0,r1,r2,pc}
*
* This instruction loads the arguments for the static thunking function to r0-r2, and
* branches to that function by loading its address into PC.
*
* This is safe for both regular calling and interrupt calling, since it only touches scratch registers
* which should be saved by the caller, and are automatically saved as part of the IRQ context switch.
*/
#define CTHUNK_ASSIGMENT m_thunk.code[0] = 0x8007E89F
#elif defined(__CORTEX_M0PLUS) || defined(__CORTEX_M0)
/*
* CTHUNK disassembly for Cortex M0 (thumb):
* * push {r0,r1,r2,r3,r4,lr} save touched registers and return address
* * movs r4,#4 set up address to load arguments from (immediately following this code block) (1)
* * add r4,pc set up address to load arguments from (immediately following this code block) (2)
* * ldm r4!,{r0,r1,r2,r3} load arguments for static thunk function
* * blx r3 call static thunk function
* * pop {r0,r1,r2,r3,r4,pc} restore scratch registers and return from function
*/
#define CTHUNK_VARIABLES volatile uint32_t code[3]
#define CTHUNK_ASSIGMENT do { \
m_thunk.code[0] = 0x2404B51F; \
m_thunk.code[1] = 0xCC0F447C; \
m_thunk.code[2] = 0xBD1F4798; \
} while (0)
#else
#error "Target is not currently suported."
#endif
/* IRQ/Exception compatible thunk entry function */
typedef void (*CThunkEntry)(void);
template<class T>
class CThunk
{
public:
typedef void (T::*CCallbackSimple)(void);
typedef void (T::*CCallback)(void* context);
inline CThunk(T *instance)
{
init(instance, NULL, NULL);
}
inline CThunk(T *instance, CCallback callback)
{
init(instance, callback, NULL);
}
~CThunk() {
}
inline CThunk(T *instance, CCallbackSimple callback)
{
init(instance, (CCallback)callback, NULL);
}
inline CThunk(T &instance, CCallback callback)
{
init(instance, callback, NULL);
}
inline CThunk(T &instance, CCallbackSimple callback)
{
init(instance, (CCallback)callback, NULL);
}
inline CThunk(T &instance, CCallback callback, void* context)
{
init(instance, callback, context);
}
inline void callback(CCallback callback)
{
m_callback = callback;
}
inline void callback(CCallbackSimple callback)
{
m_callback = (CCallback)callback;
}
inline void context(void* context)
{
m_thunk.context = (uint32_t)context;
}
inline void context(uint32_t context)
{
m_thunk.context = context;
}
inline uint32_t entry(void)
{
return (((uint32_t)&m_thunk)|CTHUNK_ADDRESS);
}
/* get thunk entry point for connecting rhunk to an IRQ table */
inline operator CThunkEntry(void)
{
return (CThunkEntry)entry();
}
/* get thunk entry point for connecting rhunk to an IRQ table */
inline operator uint32_t(void)
{
return entry();
}
/* simple test function */
inline void call(void)
{
(((CThunkEntry)(entry()))());
}
private:
T* m_instance;
volatile CCallback m_callback;
// TODO: this needs proper fix, to refactor toolchain header file and all its use
// PACKED there is not defined properly for IAR
#if defined (__ICCARM__)
typedef __packed struct
{
CTHUNK_VARIABLES;
volatile uint32_t instance;
volatile uint32_t context;
volatile uint32_t callback;
volatile uint32_t trampoline;
} CThunkTrampoline;
#else
typedef struct
{
CTHUNK_VARIABLES;
volatile uint32_t instance;
volatile uint32_t context;
volatile uint32_t callback;
volatile uint32_t trampoline;
} __attribute__((__packed__)) CThunkTrampoline;
#endif
static void trampoline(T* instance, void* context, CCallback* callback)
{
if(instance && *callback) {
(static_cast<T*>(instance)->**callback)(context);
}
}
volatile CThunkTrampoline m_thunk;
inline void init(T *instance, CCallback callback, void* context)
{
/* remember callback - need to add this level of redirection
as pointer size for member functions differs between platforms */
m_callback = callback;
/* populate thunking trampoline */
CTHUNK_ASSIGMENT;
m_thunk.context = (uint32_t)context;
m_thunk.instance = (uint32_t)instance;
m_thunk.callback = (uint32_t)&m_callback;
m_thunk.trampoline = (uint32_t)&trampoline;
__ISB();
__DSB();
}
};
#endif/*__CTHUNK_H__*/

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api/CallChain.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_CALLCHAIN_H
#define MBED_CALLCHAIN_H
#include "FunctionPointer.h"
#include <string.h>
namespace mbed {
/** Group one or more functions in an instance of a CallChain, then call them in
* sequence using CallChain::call(). Used mostly by the interrupt chaining code,
* but can be used for other purposes.
*
* Example:
* @code
* #include "mbed.h"
*
* CallChain chain;
*
* void first(void) {
* printf("'first' function.\n");
* }
*
* void second(void) {
* printf("'second' function.\n");
* }
*
* class Test {
* public:
* void f(void) {
* printf("A::f (class member).\n");
* }
* };
*
* int main() {
* Test test;
*
* chain.add(second);
* chain.add_front(first);
* chain.add(&test, &Test::f);
* chain.call();
* }
* @endcode
*/
typedef FunctionPointer* pFunctionPointer_t;
class CallChain {
public:
/** Create an empty chain
*
* @param size (optional) Initial size of the chain
*/
CallChain(int size = 4);
virtual ~CallChain();
/** Add a function at the end of the chain
*
* @param function A pointer to a void function
*
* @returns
* The function object created for 'function'
*/
pFunctionPointer_t add(void (*function)(void));
/** Add a function at the end of the chain
*
* @param tptr pointer to the object to call the member function on
* @param mptr pointer to the member function to be called
*
* @returns
* The function object created for 'tptr' and 'mptr'
*/
template<typename T>
pFunctionPointer_t add(T *tptr, void (T::*mptr)(void)) {
return common_add(new FunctionPointer(tptr, mptr));
}
/** Add a function at the beginning of the chain
*
* @param function A pointer to a void function
*
* @returns
* The function object created for 'function'
*/
pFunctionPointer_t add_front(void (*function)(void));
/** Add a function at the beginning of the chain
*
* @param tptr pointer to the object to call the member function on
* @param mptr pointer to the member function to be called
*
* @returns
* The function object created for 'tptr' and 'mptr'
*/
template<typename T>
pFunctionPointer_t add_front(T *tptr, void (T::*mptr)(void)) {
return common_add_front(new FunctionPointer(tptr, mptr));
}
/** Get the number of functions in the chain
*/
int size() const;
/** Get a function object from the chain
*
* @param i function object index
*
* @returns
* The function object at position 'i' in the chain
*/
pFunctionPointer_t get(int i) const;
/** Look for a function object in the call chain
*
* @param f the function object to search
*
* @returns
* The index of the function object if found, -1 otherwise.
*/
int find(pFunctionPointer_t f) const;
/** Clear the call chain (remove all functions in the chain).
*/
void clear();
/** Remove a function object from the chain
*
* @arg f the function object to remove
*
* @returns
* true if the function object was found and removed, false otherwise.
*/
bool remove(pFunctionPointer_t f);
/** Call all the functions in the chain in sequence
*/
void call();
#ifdef MBED_OPERATORS
void operator ()(void) {
call();
}
pFunctionPointer_t operator [](int i) const {
return get(i);
}
#endif
private:
void _check_size();
pFunctionPointer_t common_add(pFunctionPointer_t pf);
pFunctionPointer_t common_add_front(pFunctionPointer_t pf);
pFunctionPointer_t* _chain;
int _size;
int _elements;
/* disallow copy constructor and assignment operators */
private:
CallChain(const CallChain&);
CallChain & operator = (const CallChain&);
};
} // namespace mbed
#endif

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api/CircularBuffer.h
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/* mbed Microcontroller Library
* Copyright (c) 2015 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_CIRCULARBUFFER_H
#define MBED_CIRCULARBUFFER_H
namespace mbed {
/** Templated Circular buffer class
*/
template<typename T, uint32_t BufferSize, typename CounterType = uint32_t>
class CircularBuffer {
public:
CircularBuffer() : _head(0), _tail(0), _full(false) {
}
~CircularBuffer() {
}
/** Push the transaction to the buffer. This overwrites the buffer if it's
* full
*
* @param data Data to be pushed to the buffer
*/
void push(const T& data) {
if (full()) {
_tail++;
_tail %= BufferSize;
}
_pool[_head++] = data;
_head %= BufferSize;
if (_head == _tail) {
_full = true;
}
}
/** Pop the transaction from the buffer
*
* @param data Data to be pushed to the buffer
* @return True if the buffer is not empty and data contains a transaction, false otherwise
*/
bool pop(T& data) {
if (!empty()) {
data = _pool[_tail++];
_tail %= BufferSize;
_full = false;
return true;
}
return false;
}
/** Check if the buffer is empty
*
* @return True if the buffer is empty, false if not
*/
bool empty() {
return (_head == _tail) && !_full;
}
/** Check if the buffer is full
*
* @return True if the buffer is full, false if not
*/
bool full() {
return _full;
}
/** Reset the buffer
*
*/
void reset() {
_head = 0;
_tail = 0;
_full = false;
}
private:
T _pool[BufferSize];
volatile CounterType _head;
volatile CounterType _tail;
volatile bool _full;
};
}
#endif

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api/DigitalIn.h
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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef MBED_DIGITALIN_H
#define MBED_DIGITALIN_H
#include "platform.h"
#include "gpio_api.h"
namespace mbed {
/** A digital input, used for reading the state of a pin
*
* Example:
* @code
* // Flash an LED while a DigitalIn is true
*
* #include "mbed.h"
*
* DigitalIn enable(p5);
* DigitalOut led(LED1);
*
* int main() {
* while(1) {
* if(enable) {
* led = !led;
* }
* wait(0.25);
* }
* }
* @endcode
*/
class DigitalIn {
public:
/** Create a DigitalIn connected to the specified pin
*
* @param pin DigitalIn pin to connect to
*/
DigitalIn(PinName pin) : gpio() {
gpio_init_in(&gpio, pin);
}
/** Create a DigitalIn connected to the specified pin
*
* @param pin DigitalIn pin to connect to
* @param mode the initial mode of the pin
*/
DigitalIn(PinName pin, PinMode mode) : gpio() {
gpio_init_in_ex(&gpio, pin, mode);
}
/** Read the input, represented as 0 or 1 (int)
*
* @returns
* An integer representing the state of the input pin,
* 0 for logical 0, 1 for logical 1
*/
int read() {
return gpio_read(&gpio);