There was a bug with 512k stm32f4. I wrote to openocd, they fixed it. Use git version. Works for me.What compiler do you use for stm32f4? I just built summon, think we need it in ports. Failed to build recent mainline gcc.08.11.2013, 02:56, "Andreas Fritiofson" <andreas.fritiof...@gmail.com>:,,On Thu, Nov 7, 2013 at 9:39 PM, Greg Hutchins <ghutch...@gmail.com> wrote:From: Greg Hutchins [mailto:ghutch...@gmail.com]
Sent: Thursday, October 24, 2013 2:22 PM
To: Greg DAVIS
Cc: seton.kas...@hitemengineering.com
Subject: openocd.0.7.0 issue with stm32f407vet6
Works with the stm32f407vgt6 (1Mbyte flash part), fails with the smt32f407vet6 (512Kbyte flash part).
Following are the screen dumps and the file where I think the error is logged. The confusing part is the
Device id should be 0x413 for both parts, so I am not sure how the 0x411 code was executed.
But I don't see an error in the second screenshot, only an informational message that the erratum was detected. Or is it simply crashing? Then it's not related to the "error" message, see further down.Geez that's a lot of unrelated code, you could have cut out the important part. :P
if ((*device_id & 0xfff) == 0x411) {
/* read CPUID reg to check core type */
retval = target_read_u32(target, 0xE000ED00, &cpuid);
if (retval != ERROR_OK)
return retval;
/* check for cortex_m4 */
if (((cpuid >> 4) & 0xFFF) == 0xC24) {
*device_id &= ~((0xFFFF << 16) | 0xfff);
*device_id |= (0x1000 << 16) | 0x413;
LOG_INFO("stm32f4x errata detected - fixing incorrect MCU_IDCODE"); // ß here is the error that is printed out!!!!
}
}
return retval;
}
Since you end up at the highlighted line, the 512k variant obviously suffers from the erratum mentioned. I.e. it's a F40x that is mislabeled with id 0x411, even though we know it's not a F20x because it has a Cortex-M4.Anyhoo, this is not related to your issue which instead is caused by a bug in the calculation of the number of sectors for parts < 1024K. It was fixed after 0.7.0, in commit 9f1616d2b5ea./Andreas------------------------------------------------------------------------------
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