Fork of the official mbed C/C SDK provides the software platform and libraries to build your applications. The fork has the documentation converted to Doxygen format
Fork of mbed by
AnalogOut Class Reference
An analog output, used for setting the voltage on a pin. More...
#include <AnalogOut.h>
Inherits mbed::Base.
Public Member Functions | |
AnalogOut (PinName pin, const char *name=NULL) | |
Create an AnalogOut connected to the specified pin. | |
void | write (float value) |
Set the output voltage, specified as a percentage (float) | |
void | write_u16 (unsigned short value) |
Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF]. | |
float | read () |
Return the current output voltage setting, measured as a percentage (float) | |
AnalogOut & | operator= (float percent) |
An operator shorthand for write() | |
operator float () | |
An operator shorthand for read() | |
virtual struct rpc_method * | get_rpc_methods () |
Returns a pointer to an array describing the rpc methods supported by this object, terminated by either RPC_METHOD_END or RPC_METHOD_SUPER(Superclass). | |
void | register_object (const char *name) |
Registers this object with the given name, so that it can be looked up with lookup. | |
const char * | name () |
Returns the name of the object. | |
virtual bool | rpc (const char *method, const char *arguments, char *result) |
Call the given method with the given arguments, and write the result into the string pointed to by result. | |
Static Public Member Functions | |
static bool | rpc (const char *name, const char *method, const char *arguments, char *result) |
Use the lookup function to lookup an object and, if successful, call its rpc method. | |
static Base * | lookup (const char *name, unsigned int len) |
Lookup and return the object that has the given name. | |
template<class C > | |
static void | add_rpc_class () |
Add the class to the list of classes which can have static methods called via rpc (the static methods which can be called are defined by that class' get_rpc_class() static method). |
Detailed Description
An analog output, used for setting the voltage on a pin.
Example:
// 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; } } }
Definition at line 39 of file AnalogOut.h.
Constructor & Destructor Documentation
AnalogOut | ( | PinName | pin, |
const char * | name = NULL |
||
) |
Member Function Documentation
static void add_rpc_class | ( | ) | [static, inherited] |
virtual struct rpc_method* get_rpc_methods | ( | ) | [read, virtual] |
Returns a pointer to an array describing the rpc methods supported by this object, terminated by either RPC_METHOD_END or RPC_METHOD_SUPER(Superclass).
Example
class Example : public Base { int foo(int a, int b) { return a + b; } virtual const struct rpc_method *get_rpc_methods() { static const rpc_method rpc_methods[] = { { "foo", generic_caller<int, Example, int, int, &Example::foo> }, RPC_METHOD_SUPER(Base) }; return rpc_methods; } };
Reimplemented from Base.
static Base* lookup | ( | const char * | name, |
unsigned int | len | ||
) | [static, inherited] |
Lookup and return the object that has the given name.
- Parameters:
-
name the name to lookup. len the length of name.
const char* name | ( | ) | [inherited] |
Returns the name of the object.
- Returns:
- The name of the object, or NULL if it has no name.
operator float | ( | ) |
An operator shorthand for read()
float read | ( | ) |
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().
void register_object | ( | const char * | name ) | [inherited] |
Registers this object with the given name, so that it can be looked up with lookup.
If this object has already been registered, then this just changes the name.
- Parameters:
-
name The name to give the object. If NULL we do nothing.
static bool rpc | ( | const char * | name, |
const char * | method, | ||
const char * | arguments, | ||
char * | result | ||
) | [static, inherited] |
Use the lookup function to lookup an object and, if successful, call its rpc method.
- Returns:
- false if name does not correspond to an object, otherwise the return value of the call to the object's rpc method.
virtual bool rpc | ( | const char * | method, |
const char * | arguments, | ||
char * | result | ||
) | [virtual, inherited] |
Call the given method with the given arguments, and write the result into the string pointed to by result.
The default implementation calls rpc_methods to determine the supported methods.
- Parameters:
-
method The name of the method to call. arguments A list of arguments separated by spaces. result A pointer to a string to write the result into. May be NULL, in which case nothing is written.
- Returns:
- true if method corresponds to a valid rpc method, or false otherwise.
void write | ( | float | value ) |
Set the output voltage, specified as a percentage (float)
- Parameters:
-
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_u16 | ( | unsigned short | value ) |
Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF].
- Parameters:
-
value 16-bit unsigned short representing the output voltage, normalised to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v)
Generated on Tue Jul 12 2022 20:01:58 by 1.7.2