8-bit Microcontrollers中的主题 Problem with usb device JS16 https://community.nxp.com/t5/8-bit-Microcontrollers/Problem-with-usb-device-JS16/m-p/190861#M14623 <HTML><HEAD></HEAD><BODY><P>Hi everybody, I'm relatively new in the USB Module of Freescale, so i have a little problem. Modifying the usb_descriptor.c of the USB stack for an HID keyboard working on JS16, in order to work as a USB RAW Device, I've managed to connect it to the PC with an interface in Labview. First I only send a 8-bit long string with a 1 sec interval from microcontroller to PC. I checked it during a long time and all was fine. Then I conected an STH75 (temperature and humidity sensor) to the microcontroller to make a register in Labview.&nbsp; First the PC didnt recognize the usb device. Then I noticed that plugging the sensor after the device was recognized by the PC worked very well. I was getting tempearture and humidity every second during 3 hours when suddenly the connection got lost. The PC didnt recongnize my device and I have to unplug it and plug it again. I dont know why is this happening. I think it could be a problem related to the max miliampere configuration. Someone who could help me i'd be very pleased. Thanks. &nbsp;</P></BODY></HTML> Thu, 23 Aug 2012 05:05:50 GMT alextovman 2012-08-23T05:05:50Z Problem with usb device JS16 https://community.nxp.com/t5/8-bit-Microcontrollers/Problem-with-usb-device-JS16/m-p/190861#M14623 <HTML><HEAD></HEAD><BODY><P>Hi everybody, I'm relatively new in the USB Module of Freescale, so i have a little problem. Modifying the usb_descriptor.c of the USB stack for an HID keyboard working on JS16, in order to work as a USB RAW Device, I've managed to connect it to the PC with an interface in Labview. First I only send a 8-bit long string with a 1 sec interval from microcontroller to PC. I checked it during a long time and all was fine. Then I conected an STH75 (temperature and humidity sensor) to the microcontroller to make a register in Labview.&nbsp; First the PC didnt recognize the usb device. Then I noticed that plugging the sensor after the device was recognized by the PC worked very well. I was getting tempearture and humidity every second during 3 hours when suddenly the connection got lost. The PC didnt recongnize my device and I have to unplug it and plug it again. I dont know why is this happening. I think it could be a problem related to the max miliampere configuration. Someone who could help me i'd be very pleased. Thanks. &nbsp;</P></BODY></HTML> Thu, 23 Aug 2012 05:05:50 GMT https://community.nxp.com/t5/8-bit-Microcontrollers/Problem-with-usb-device-JS16/m-p/190861#M14623 alextovman 2012-08-23T05:05:50Z