First Cortex-M3 MCUs available
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From: Stephen Pelc on 30 Mar 2006 19:31 On Thu, 30 Mar 2006 22:41:33 +1200, Jim Granville <no.spam(a)designtools.co.nz> wrote: > Also, can anyone from Luminary explain why the ARM documents that were >on their web site are now removed ? A person from ARM said "because they are preliminary". Urk! There seem to be times when "upper" layers at ARM don't listen to the people at the coalface. The same was also true before the introduction of commodity ARM7 parts. I suspect that ARM, as opposed to Luminary, are chasing very high volume *core* design ins at this stage. I wish Luminary well. Stephen -- Stephen Pelc, stephenXXX(a)mpeforth.com MicroProcessor Engineering Ltd - More Real, Less Time 133 Hill Lane, Southampton SO15 5AF, England tel: +44 (0)23 8063 1441, fax: +44 (0)23 8033 9691 web: http://www.mpeforth.com - free VFX Forth downloads
From: Eric on 30 Mar 2006 21:37 How do we interface gdb to the cortex-m3? I understand existing Wigglers don't work. Does anyone sell Wiggers that do work with it?
From: dominic.rath on 31 Mar 2006 04:32 Eric wrote: > How do we interface gdb to the cortex-m3? I understand existing > Wigglers don't work. Does anyone sell Wiggers that do work with it? The Cortex-M3 has two debug interfaces - a traditional 4-wire JTAG interface (TCK, TMS, TDI and TDO), and a single-wire debug (SWD) interface. Someone at the Luminary forum reported that they successfully used a standard Wiggler with the 4-wire interface. The SWD on the other hand might be too much for a simple device like a Wiggler to handle. To use GDB, you'd need something that translates e.g. the GDB remote protocol into the low-level JTAG signals. There's a RDI-GDB stub available for some of the commercial debuggers, maybe you could use one of these. Regards, Dominic
From: Richard on 31 Mar 2006 06:35 <dominic.rath(a)gmail.com> wrote in message news:1143797541.796119.42150(a)u72g2000cwu.googlegroups.com... > Eric wrote: >> How do we interface gdb to the cortex-m3? I understand existing >> Wigglers don't work. Does anyone sell Wiggers that do work with it? > > The Cortex-M3 has two debug interfaces - a traditional 4-wire JTAG > interface (TCK, TMS, TDI and TDO), and a single-wire debug (SWD) > interface. Someone at the Luminary forum reported that they > successfully used a standard Wiggler with the 4-wire interface. > The SWD on the other hand might be too much for a simple device like a > Wiggler to handle. > > To use GDB, you'd need something that translates e.g. the GDB remote > protocol into the low-level JTAG signals. There's a RDI-GDB stub > available for some of the commercial debuggers, maybe you could use one > of these. I think the CodeSourcery/Luminary Micro setup allows GDB to talk directly to the dev kit over a USB interface. No need for a wiggler for that particular setup. Regards, Richard. http://www.FreeRTOS.org *Now for ARM CORTEX M3*
From: Eric on 1 Apr 2006 00:20
Dominic, Do you think your OpenOCD will work with these chips? Do you think the Cortex-M3 4-wire JTAG interface is compatible with older ARM7TDMI JTAG interfaces? I hope we can get Olimex or someone else to make low cost dev boards. I'd really like to play with these devices. Eric |