On Sat, 30 May 2009, Peter Denison wrote: > On Sat, 30 May 2009, Magnus Lundin wrote: > >> It looks like you are using jtag_khz 0, this means adaptive clocking with >> the RTCK signal. This work for LPC3148 that has a RTCK signal, but as far as >> I can find there is no RTCK singal on the TMS470R1A256. >> >> For testing interface problem I would suggest, always start with a slow jtag >> clock, like jtag_khz 30 or 100. If this works try to increase it. > > Many thanks! Somehow in my testing (probably to try to replicate XC's > config) I had put jtag_rclk in my .cfg file. > > I've replaced it with jtag_khz 30, and I can at least initialise now. > Sorry for the misdirection. > > So, summary: r1932, J-Link V6, XScale IXP422 target. Initialisation works.
Only it doesn't reliably! This adapter is driving me up the wall. The first time after power-up, the adapter fails on the first EMU_CMD_HW_JTAG3 if it's 7 bits (0x7F) long, and works if it's 8 bits (0xFF) long. By failure, I mean that the adapter simply fails to respond to the command, and the USB layer times out. However, after it has worked once, any size bit sequences work. I suppose I could put in a "first time" flag so that the first (RESET -> RESET) transition is always 8 bits. Thoughts? J-Link ARM V6 compiled Mar 3 2008 18:04:42 _______________________________________________ Openocd-development mailing list [email protected] https://lists.berlios.de/mailman/listinfo/openocd-development
