From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Lewin A.R.W. Edwards" To: Fernando Nasser Cc: insight@sourceware.cygnus.com Subject: Re: Angel not present Date: Tue, 20 Mar 2001 06:51:00 -0000 Message-id: <4.3.2.7.2.20010320094109.02a3f8f0@mail.larwe.com> References: <2253171AF143D21185A60000F8FA748B02DA4BF5@pluto.combitech.se> <3AB769D3.51BBEEC7@redhat.com> X-SW-Source: 2001-q1/msg00343.html Hi Fernando, >1) A bug in the ARM AEB board (used to sell at $150 -- now discontinued) >where the board disrespected the documented protocol and the client code I am informed that this is a long-standing bug in Angel. I am personally experiencing great fragility with the Atmel AT91EB40 board, so I know it's not limited to the firmware in the AEB. The Atmel kit seems to include Angel sources (haven't looked closely), so I guess I could try to fix it, but (see below) why bother... >2) Old versions of Cygwin had a problem with the serial port. The I have observed this problem with Cygwin 1.1.8, which is the currently downloadable version. It can be alleviated a _little_ by disabling FIFOs on the host-side's serial port. However the debugging link is still very, very fragile, especially in Win9x. Everything I have been told by other ARMers indicates that this is due to bugs in Angel. In fact, I haven't heard anyone with a positive word to say about Angel; Atmel FAEs, other embedded engineers... So once I get some spare time I will port gdb stubs to the EB40 (someone has already done an unsupported port to the AT91EB01 and the boards are almost identical). >3) GDB 5.0 (now very old) also had problems in ARM support. If I am not >mistaken, the higher speeds were missing from the Target Selection >dialog. We are having to recommend a recent GDB snapshot for whoever is >debugging ARM (specially with Angel) until GDB 5.1 is out. I'll have to try that; I am currently using 5.0. === Lewin A.R.W. Edwards (Embedded Engineer) Work: http://www.digi-frame.com/ Personal: http://www.zws.com/ and http://www.larwe.com/ "Und setzet ihr nicht das Leben ein, Nie wird euch das Leben gewonnen sein."