Syntax:
byte_variable = ST7920GLCDReadByte
Explanation:
This function return the word value (16 bits) of the GLCD display for the current XY position.
This is called by the GLCD common routines.
See the data sheet for more information.
Example usage:
SET GLCD_RS OFF
ST7920WriteByte( SysCalcPositionY )
ST7920WriteByte( SysCalcPositionX )
' read data
GLCDDataTempWord = ST7920GLCDReadByte ' <<< the ST7920GLCDReadByte instruction
GLCDDataTempWord = ST7920GLCDReadByte
GLCDDataTempWord = (GLCDDataTempWord*256) + ST7920GLCDReadByteKey line: GLCDDataTempWord = ST7920GLCDReadByte — reads one byte from the display’s DDRAM at the position set by the two ST7920WriteByte calls above; a full word is assembled by calling it twice and combining the results, as shown on the final line.
See Also:
- GLCD Overview — category overview
- ST7920WriteByte — positioning the read/write address before reading
- ST7920gReaddata — reading a full word in a single call
