I while ago I was talking about issues with my SDCard, and I've just had a friend have some similar issues. Both these issues were fixed with setting the max frequency to 15MHz config set sdcard maxfreq.khz 15000 This does end up making things a bit slower, but at least it works. The reported max of my card is 25Mhz. I'm concerned that the default is misbehaving. Is this a software issue? or is it a hardware issue? //.ichael
I think the actual max speed of the SPI host is 20 MHz, I never got anything higher to work. 20 MHz is my current config and works fine with all SD cards I tested. Joshua Jung reported an issue with SD cards, that was resolved by a hardware replacement (I assume he meant replacing the module): https://github.com/openvehicles/Open-Vehicle-Monitoring-System-3/issues/1107 So there may be a hardware issue with some modules. Regards, Michael Am 23.03.25 um 04:52 schrieb Michael Geddes via OvmsDev:
I while ago I was talking about issues with my SDCard, and I've just had a friend have some similar issues. Both these issues were fixed with setting the max frequency to 15MHz config set sdcard maxfreq.khz 15000
This does end up making things a bit slower, but at least it works. The reported max of my card is 25Mhz. I'm concerned that the default is misbehaving. Is this a software issue? or is it a hardware issue?
//.ichael
_______________________________________________ OvmsDev mailing list OvmsDev@lists.openvehicles.com http://lists.openvehicles.com/mailman/listinfo/ovmsdev
-- Michael Balzer * Am Rahmen 5 * D-58313 Herdecke Fon 02330 9104094 * Handy 0176 20698926
Anything since mid 2018 should be fine to go at the higher SD card speed. Before then there were hardware problems. Attached is announcement back then. The design will limit SD CARD speed, as we have very few free GPIOs and had to keep the interface as simple as possible. Regards, Mark.
On 23 Mar 2025, at 11:52 AM, Michael Geddes via OvmsDev <ovmsdev@lists.openvehicles.com> wrote:
I while ago I was talking about issues with my SDCard, and I've just had a friend have some similar issues. Both these issues were fixed with setting the max frequency to 15MHz config set sdcard maxfreq.khz 15000
This does end up making things a bit slower, but at least it works. The reported max of my card is 25Mhz. I'm concerned that the default is misbehaving. Is this a software issue? or is it a hardware issue?
//.ichael _______________________________________________ OvmsDev mailing list OvmsDev@lists.openvehicles.com http://lists.openvehicles.com/mailman/listinfo/ovmsdev
participants (3)
-
Mark Webb-Johnson -
Michael Balzer -
Michael Geddes