Le 18/07/2012 10:50, Andreas Fritiofson a écrit : > On Wed, Jul 18, 2012 at 2:47 PM, Andreas Färber<[email protected]> wrote: >> Hello, >> >> Am 18.07.2012 01:22, schrieb Michel Catudal: >>> Le 17/07/2012 07:23, Marek Szczypta a écrit : >>>> I'm very interested in running openOCD Debugger with NEC V850 . Please >>>> tell me is it somebody willing to make this implementation ( of course not >>>> for free :) ) >>> I would if I had documentation on their debugging protocol. Do you have any >>> info on Minicube 2? I haven't found anything on it except programs to run >>> it under windows. >> See my WIP repository https://github.com/afaerber/v850j >> >> They use a rather well documented, sane serial protocol - unfortunately >> I had a logic error in my try-out tool (review what it does before >> attempting to run it!) that set the security bits wrong, screwing my >> V850ES/Jx3-L stick, so that only RL78 support is still being worked on. >> >> The information I collected from public PDF documents on renesas.eu; I >> can check which ones if you want. > That is the flash protocol used by the ROM monitor. It's not usable > for debugging. The debug interface is a JTAG-like interface using > other pins. That protocol documentation is not publicly available and > is unlikely to be disclosed. The only option is reverse engineering. I > had plans on giving it a try, but never got around to it. And since > then we've stopped using the V850 for new projects due to cost, > performance and lousy support from NEC. > > /Andreas > I have given up a while ago on NEC. I did get very good support at work when I was looking for a new part for a new design. With Renesas the support is non existant in my area. It doesn't really matter, we picked the AVR32 UC3C that is fully ppap and we get support from Atmel. What was very good in the past about NEC is that they would support the automotive industry for a long time with a ppap part. Not all manufacturer are that good about it. If you read the freescale specs they always say that they can discontinue a part at any time. NEC never did that. If you were a good customer, even if a part was no longer valid for new designs you could still order what you had in production for years after the official discontinuation date. When a part is obsolete with Freescale good luck finding parts at an affordable price. I do not know if Renesas has changed those practices though. Their dropping of the good support NEC had is a bad sign of things to come.
You might want to look at the AVR32 or PIC32, two very good alternative to NEC. The AVR32 U3C family can run at +5V or 3.3V. The PIC32 doesn't run at +5V and is not ppap. For hobbies the PIC32 is probably a better choice than the AVR32 because of the lower cost compared to the AVR32. The AVR32 has very good prices for quantities but in low quantity it will never beat the PIC32. The AVR32 does have hardware float though so the higher price might be OK if hardware float is necessary for you. Michel -- For OS/2 and Linux Software visit http://home.comcast.net/~mcatudal ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ OpenOCD-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/openocd-devel
