topic About MPC8248 USB hardware interrupt in ColdFire/68K Microcontrollers and Processors https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MPC8248-USB-hardware-interrupt/m-p/139031#M2123 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><SPAN>We use the MPC8248 usb controller as a usb host. But I don't know what are the pre-conditions for the usb hardware interrupt to occur.</SPAN><BR /><SPAN>Firstly,I clear the SIPNR_L[USB] and set the the SIMR_L[USB].And I set he MSR[EE].</SPAN><BR /><BR /><SPAN>Secondly,I set some needed bits(for example,IDLE,RESET,SOF,TXB,TXE1)in USBMR.</SPAN><BR /><BR /><SPAN>Althrough at this time, I haven't registered the ISR with the interruper vector(0b00_1011).</SPAN><BR /><BR /><SPAN>When the borad brings up,and the above conditions are also meet, I think that,if a usb flash disk is inserted to the board, the system should set the SIPNR_L[USB] automatically. Am I true?</SPAN><BR /><BR /><SPAN>If I'm wrong,the software should do something else to let the system set the SIPNR_L[USB].Could you tell me ?</SPAN><BR /><BR /><SPAN>Thanks!</SPAN></BODY></HTML> Tue, 05 Dec 2006 18:09:05 GMT AndrewChou 2006-12-05T18:09:05Z About MPC8248 USB hardware interrupt https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MPC8248-USB-hardware-interrupt/m-p/139031#M2123 <HTML><HEAD></HEAD><BODY><SPAN>Hi,</SPAN><BR /><SPAN>We use the MPC8248 usb controller as a usb host. But I don't know what are the pre-conditions for the usb hardware interrupt to occur.</SPAN><BR /><SPAN>Firstly,I clear the SIPNR_L[USB] and set the the SIMR_L[USB].And I set he MSR[EE].</SPAN><BR /><BR /><SPAN>Secondly,I set some needed bits(for example,IDLE,RESET,SOF,TXB,TXE1)in USBMR.</SPAN><BR /><BR /><SPAN>Althrough at this time, I haven't registered the ISR with the interruper vector(0b00_1011).</SPAN><BR /><BR /><SPAN>When the borad brings up,and the above conditions are also meet, I think that,if a usb flash disk is inserted to the board, the system should set the SIPNR_L[USB] automatically. Am I true?</SPAN><BR /><BR /><SPAN>If I'm wrong,the software should do something else to let the system set the SIPNR_L[USB].Could you tell me ?</SPAN><BR /><BR /><SPAN>Thanks!</SPAN></BODY></HTML> Tue, 05 Dec 2006 18:09:05 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MPC8248-USB-hardware-interrupt/m-p/139031#M2123 AndrewChou 2006-12-05T18:09:05Z Re: About MPC8248 USB hardware interrupt https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MPC8248-USB-hardware-interrupt/m-p/139032#M2124 <HTML><HEAD></HEAD><BODY>Hi Andrew<BR /><BR />I think you may have posted your question in the wrong place.<BR /><BR />This is a discussion forum about the ColdFire microprocessor range. Your question relates to a PowerPC processor, so you may not find anyone here that can help you.</BODY></HTML> Tue, 05 Dec 2006 18:27:51 GMT https://community.nxp.com/t5/ColdFire-68K-Microcontrollers/About-MPC8248-USB-hardware-interrupt/m-p/139032#M2124 SimonMarsden_de 2006-12-05T18:27:51Z