topic TWR-SENSOR OSBDM problem in OSBDM and TBDML https://community.nxp.com/t5/OSBDM-and-TBDML/TWR-SENSOR-OSBDM-problem/m-p/408364#M3089 <HTML><HEAD></HEAD><BODY><P>Hi everyone,</P><P></P><P>I'd like to ask for a help with onboard OSBDM in TWR-SENSOR module. I'm using Codewarrior 10.6, it automatically updates OSBDM firmware to the latest version. However TWR-SENSOR is unable to work with this latest version, target MCU is not powered. It seems that the problem is caused by wrong polarity of VTRG_EN signal, it should be active high in correct OSBDM implementation but TWR-SENSOR is wired in such a way that it is active low. Please see TWR-SENSOR schematic (SCH-26439, rev C) around transistor Q1 and some working board for comparison, for example TWR-S08MM128 (SCH-26136, rev D) around U2, described difference is evident here. Please, can someone from FSL confirm this errata? If yes, is there a software fix, that is latest OSBDM firmware with active low VTRG_EN polarity? If the software fix is not available, is there any recommended hardware workaround?</P><P></P><P>Thank you.</P><P></P><P>Best regards,</P><P>Martin</P><P></P><P></P></BODY></HTML> Sun, 18 Oct 2015 20:59:05 GMT mst_ 2015-10-18T20:59:05Z TWR-SENSOR OSBDM problem https://community.nxp.com/t5/OSBDM-and-TBDML/TWR-SENSOR-OSBDM-problem/m-p/408364#M3089 <HTML><HEAD></HEAD><BODY><P>Hi everyone,</P><P></P><P>I'd like to ask for a help with onboard OSBDM in TWR-SENSOR module. I'm using Codewarrior 10.6, it automatically updates OSBDM firmware to the latest version. However TWR-SENSOR is unable to work with this latest version, target MCU is not powered. It seems that the problem is caused by wrong polarity of VTRG_EN signal, it should be active high in correct OSBDM implementation but TWR-SENSOR is wired in such a way that it is active low. Please see TWR-SENSOR schematic (SCH-26439, rev C) around transistor Q1 and some working board for comparison, for example TWR-S08MM128 (SCH-26136, rev D) around U2, described difference is evident here. Please, can someone from FSL confirm this errata? If yes, is there a software fix, that is latest OSBDM firmware with active low VTRG_EN polarity? If the software fix is not available, is there any recommended hardware workaround?</P><P></P><P>Thank you.</P><P></P><P>Best regards,</P><P>Martin</P><P></P><P></P></BODY></HTML> Sun, 18 Oct 2015 20:59:05 GMT https://community.nxp.com/t5/OSBDM-and-TBDML/TWR-SENSOR-OSBDM-problem/m-p/408364#M3089 mst_ 2015-10-18T20:59:05Z