SPI Class Reference

Create a SPI master connected to the specified pins.

Pin Options: (5, 6, 7) or (11, 12, 13)

mosi or miso can be specfied as NC if not used

Parameters:

mosi	SPI Master Out, Slave In pin
miso	SPI Master In, Slave Out pin
sclk	SPI Clock pin
name	(optional) A string to identify the object

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).

Definition at line 143 of file Base.h.

Configure the data transmission format.

Parameters:

bits	Number of bits per SPI frame (4 - 16)
mode	Clock polarity and phase mode (0 - 3)

 mode | POL PHA 
 -----+--------     
   0  |  0   0 
   1  |  0   1
   2  |  1   0 
   3  |  1   1

Reimplemented in SPIHalfDuplex.

Set the spi bus clock frequency.

Parameters:

hz	SCLK frequency in hz (default = 1MHz)

Reimplemented in SPIHalfDuplex.

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.

Lookup and return the object that has the given name.

Parameters:

name	the name to lookup.
len	the length of name.

Returns the name of the object.

Returns:

The name of the object, or NULL if it has no name.

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.

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.

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.

Write to the SPI Slave and return the response.

Parameters:

value

Data to be sent to the SPI slave

Returns:

Response from the SPI slave

Reimplemented in SPIHalfDuplex.