Datasheet

chipKIT™ Basic I/O Shield™ Reference Manual
Copyright Digilent, Inc. All rights reserved.
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Page 12 of 13
** none
**
** Errors:
** none
**
** Description:
** Update the OLED display with the contents of the memory buffer
*/
void
OledUpdate()
{
int ipag;
int icol;
BYTE * pb;
pb = rgbOledBmp;
for (ipag = 0; ipag < cpagOledMax; ipag++) {
PORTClearBits(prtDataCmd, bitDataCmd);
/* Set the page address
*/
Spi2PutByte(0x22); //Set page command
Spi2PutByte(ipag); //page number
/* Start at the left column
*/
Spi2PutByte(0x00); //set low nybble of column
Spi2PutByte(0x10); //set high nybble of column
PORTSetBits(prtDataCmd, bitDataCmd);
/* Copy this memory page of display data.
*/
OledPutBuffer(ccolOledMax, pb);
pb += ccolOledMax;
}
}
Low-Level SPI Functions
The following functions are used to write data to the display panel using the SPI controller.
/* ------------------------------------------------------------ */
/*** OledPutBuffer
**
** Parameters:
** cb - number of bytes to send/receive
** rgbTx - pointer to the buffer to send
**
** Return Value:
** none
**
** Errors:
** none
**
** Description:
** Send the bytes specified in rgbTx to the slave.
*/