I don’t think Espressif will help once the module has been put in a device/board. They’ve probably just direct you back to the supplier. Anyway, let’s just confirm we don’t have another issue causing this (either corrupt firmware, or power issues): Please power the device either from a powered USB hub, or from 12V. Best to also disconnect the modem board if you can. Then: Please try to erase the chip, then re-flash from the standard firmware here: $ make erase_flash http://api.openvehicles.com/firmware/ota/v3.1/main/20180321.bootloader.bin <http://api.openvehicles.com/firmware/ota/v3.1/main/20180321.bootloader.bin> http://api.openvehicles.com/firmware/ota/v3.1/main/20180321.partitions.bin <http://api.openvehicles.com/firmware/ota/v3.1/main/20180321.partitions.bin> http://api.openvehicles.com/firmware/ota/v3.1/main/3.1.008.ovms3.bin <http://api.openvehicles.com/firmware/ota/v3.1/main/3.1.008.ovms3.bin> … --flash_mode dio --flash_freq 40m --flash_size detect 0x1000 <BOOTLOADER> 0x10000 <BIN> 0x8000 <PARTITIONS> Reboot without a SD card in the slot and show me the output. Also, please give the output of: $ ~/esp/esp-idf/components/esptool_py/esptool/espefuse.py … summary $ ~/esp/esp-idf/components/esptool_py/esptool/espefuse.py … dump Regards, Mark.
On 8 Aug 2018, at 2:05 PM, Henrik Scheel <henrik.scheel@spjeldager.dk> wrote:
My OVMS v3.1 module is failing to boot due to e-fuse CRC error.
I am trying to open a support ticket at https://www.espressif.com/en/company/contact-extra/technical-inquiries-hardw... <https://www.espressif.com/en/company/contact-extra/technical-inquiries-hardware>.
First I had to confirm that I had done 76 advanced checks, ensuring that the hardware design is correct.
Then I have to fill in a form, requesting information like: Name Work email Job Position Country Company Website Project Name Customer Product Part Number Design Version Espressif Product SDK Version And PCB layout
So I guess I am using the wrong form.
How do I contact Espressif regarding the e-fuse problem?
Best regards, Henrik --
Venlig hilsen / best regards Henrik R. Scheel
Spjeldager Consult ApS Spjeldager 9 DK-2630 Taastrup CVR: 34491399 T: +45 2720 9828 http://www.spjeldager.dk/ <http://www.spjeldager.dk/>
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