Digilent 410-216P-KIT - Manual (Page 10)

chipKIT Basic I/O Shield Reference Manual
www.digilentinc.com page 10 of 15
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PIC32 Hardware Initialization
The following function initializes the PIC32 hardware for talking to the display. It initializes the SPI
controller and sets the control pins to be outputs.
/* ------------------------------------------------------------ */
/*** OledHostInit
**
**
Parameters:
** none
**
**
Return Value:
** none
**
**
Errors:
** none
**
**
Description:
** Perform PIC32 device initialization to prepare for use
** of the OLED display.
** This example is hard coded for the chipKIT Uno32 and
** SPI2.
*/
void
OledHostInit()
{
unsigned int tcfg;
/* Initialize SPI port 2.
*/
SPI2CON = 0;
SPI2BRG = 15; //8Mhz, with 80Mhz PB clock
SPI2STATbits.SPIROV = 0;
SPI2CONbits.CKP = 1;
SPI2CONbits.MSTEN = 1;
SPI2CONbits.ON = 1;
/* Make pins RF4, RF5, and RF6 be outputs.
*/
PORTSetBits(IOPORT_F, bitVddCtrl|bitVbatCtrl|bitDataCmd);
PORTSetPinsDigitalOut(prtDataCmd, bitDataCmd); //Data/Command# select
PORTSetPinsDigitalOut(prtVddCtrl, bitVddCtrl); //VDD power control (1=off)
PORTSetPinsDigitalOut(prtVbatCtrl, bitVbatCtrl); //VBAT power control (1=off)
/* Make the RG9 pin be an output. On the Basic I/O Shield, this pin
** is tied to reset.
*/
PORTSetBits(prtReset, bitReset);
PORTSetPinsDigitalOut(prtReset, bitReset);
}