External Functions Set

Enumerations
enum	lcdgraph_datatype_e { LCDGRAPH_DATA, LCDGRAPH_COMMAND }
	Data type. More...
Functions
lcdgraph_result_e	_lcdgraph_SendData (lcdgraph_datatype_e data_type, unsigned char *buffer, unsigned char buf_length)
	h/w level communication with LCD

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Enumeration Type Documentation

enum lcdgraph_datatype_e

Data type.

Describes type of data passed to external function

Enumerator:

LCDGRAPH_DATA	Passed data is raw data
LCDGRAPH_COMMAND	Passed data is a command for LCD

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Function Documentation

lcdgraph_result_e _lcdgraph_SendData	(	lcdgraph_datatype_e	data_type,
		unsigned char *	buffer,
		unsigned char	buf_length
	)

h/w level communication with LCD

Should be defined in user code. Takes care of transmitting data to the lcd. Must take care of all timings and other h/w stuff. May be called with no delays so should be blocking.

Parameters:

	data_type	Type of data passed to the lcd. Some data type may require special treatment during transmission (such as additional pin set or cleared)
	buffer	pointer to buffer (of type unsigned char *) with data to be transmitted
	buf_length	number of bytes stored in buffer to be transmitted

Return values:

	LCDGRAPH_OK	if all is ok
	LCDGRAPH_TRANSMIT_FAIL	if h/w error occured