byte MAX3421E::IntHandler()
{
byte HIRQ;
byte HIRQ_sendback = 0x00;
HIRQ = regRd( rHIRQ ); //determine interrupt source
//if( HIRQ & bmFRAMEIRQ ) { //->1ms SOF interrupt handler
// HIRQ_sendback |= bmFRAMEIRQ;
//}//end FRAMEIRQ handling
if( HIRQ & bmCONDETIRQ ) {
busprobe();
HIRQ_sendback |= bmCONDETIRQ;
}
/* End HIRQ interrupts handling, clear serviced IRQs */
regWr( rHIRQ, HIRQ_sendback );
return( HIRQ_sendback );
}
/* MAX3421E initialization after power-on */
void MAX3421E::powerOn()
{
/* Configure full-duplex SPI, interrupt pulse */
regWr( rPINCTL,( bmFDUPSPI + bmINTLEVEL + bmGPXB )); //Full-duplex SPI, level interrupt, GPX
if( reset() == false ) { //stop/start the oscillator
Serial.println("Error: OSCOKIRQ failed to assert");
}
/* configure host operation */
regWr( rMODE, bmDPPULLDN|bmDMPULLDN|bmHOST|bmSEPIRQ ); // set pull-downs, Host, Separate GPIN IRQ on GPX
regWr( rHIEN, bmCONDETIE|bmFRAMEIE ); //connection detection
/* check if device is connected */
regWr( rHCTL,bmSAMPLEBUS ); // sample USB bus
while(!(regRd( rHCTL ) & bmSAMPLEBUS )); //wait for sample operation to finish
busprobe(); //check if anything is connected
regWr( rHIRQ, bmCONDETIRQ ); //clear connection detect interrupt
regWr( rCPUCTL, 0x01 ); //enable interrupt pin
}
/* MAX3421E initialization after power-on */
void MAX3421E::powerOn()
{
/* Configure full-duplex SPI, interrupt pulse */
regWr( rPINCTL,( bmFDUPSPI + bmINTLEVEL + bmGPXB )); //Full-duplex SPI, level interrupt, GPX
if( reset() == false ) { //stop/start the oscillator
Serial.println("Error: OSCOKIRQ failed to assert");
}
// /* configure power switch */
// vbusPwr( OFF ); //turn Vbus power off
// regWr( rGPINIEN, bmGPINIEN7 ); //enable interrupt on GPIN7 (power switch overload flag)
// if( vbusPwr( ON ) == false ) {
// Serial.println("Error: Vbus overload");
// }
/* configure host operation */
regWr( rMODE, bmDPPULLDN|bmDMPULLDN|bmHOST|bmSEPIRQ ); // set pull-downs, Host, Separate GPIN IRQ on GPX
regWr( rHIEN, bmCONDETIE|bmFRAMEIE ); //connection detection
regWr(rHCTL,bmSAMPLEBUS); // update the JSTATUS and KSTATUS bits
busprobe(); //check if anything is connected
regWr( rHIRQ, bmCONDETIRQ ); //clear connection detect interrupt
regWr( rCPUCTL, 0x01 ); //enable interrupt pin
}
