PIC32, need to clear SW interrupt bit in CAUSE register
PIC32, need to clear SW interrupt bit in CAUSE register

git-svn-id: 67fffcbec83b6fc1571abdbea1cb58cbf23a6151@4218 7fd9a85b-ad96-42d3-883c-3090e2eb8679

PX4/Firmware,acfloria/Firmware,darknight-007/Firmware,mcgill-robotics/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,krbeverx/Firmware,Aerotenna/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,krbeverx/Firmware,acfloria/Firmware,PX4/Firmware,mcgill-robotics/Firmware,darknight-007/Firmware,PX4/Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,dagar/Firmware,PX4/Firmware,darknight-007/Firmware,krbeverx/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,acfloria/Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware,jlecoeur/Firmware,krbeverx/Firmware,krbeverx/Firmware,dagar/Firmware,mje-nz/PX4-Firmware,acfloria/Firmware,Aerotenna/Firmware,darknight-007/Firmware,dagar/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,jlecoeur/Firmware,PX4/Firmware,acfloria/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,jlecoeur/Firmware,darknight-007/Firmware,jlecoeur/Firmware,dagar/Firmware,Aerotenna/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,dagar/Firmware,dagar/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,jlecoeur/Firmware