Hi jcsbanks, exactly. For the simple case (node disconnected) the controller will enter passive error state and keep transmitting the frame without incrementing tx error counter until the frame gets acked by a node. In other cases, on a massively disturbed bus, bus-off will be reached. Anyway, a fra...

Hi Timons, first of all, bus off condition should not be reached under normal circumstances. It might be caused by some hardware issue, like invalid bus termination, or you might have multiple nodes trying to arbitrate the bus using the same message id at a time. I'd recommend to look at the SJA1000...

Hi f.h-f.s., hard to say, but for me your issue seems related to the load rather than to the relais coil, as it works fine without the load. I'd try to set up the erroneous configuration, then switch the load by shortening the relais switch using a short wire directly on the pcb and see if you get e...

ahgrrr, this was caused by myself editing an unsued source file in combination with ignoring the SJA1000 data sheet, sorry. The acceptance filters in fact work nicely as expected. I simply missed, that the SJA1000 needs to be in reset mode to give access to the filter registers. To change filter set...

sure, setting up filtering within the isr works, but in my case the SJA1000 filters would well match my needs.
And reducing interrupts is always desirable...

Has anyone used the acceptance filters? For me, whatever i write to MODULE_CAN->MBX_CTRL.ACC.CODE[] and MODULE_CAN->MBX_CTRL.ACC.MASK[] seems to have no effect at all. All messages get through, even if i set the mask registers all to 0 directly in can.c, where they are initialized to 0xff (dont care...

executing ESP_LOGI( TAG, "Initializing NVS..") esp_err_t err = nvs_flash_init(); if (err == ESP_ERR_NVS_NO_FREE_PAGES) { // NVS partition was truncated and needs to be erased // Retry nvs_flash_init ESP_ERROR_CHECK(nvs_flash_erase()); err = nvs_flash_init(); } ESP_ERROR_CHECK(err); ESP_LOGI( TAG, "N...

Hi Angus,

Out of curiosity, were you flashing a SPIFFS partition the first (failed) time as well?

well, it was there. As I did not erase the flash, there was a somewhat unclear situation. The SPIFFS contains configuration data, the app never writes to it by now.

Best
Markus

Finally the following procedure worked well: #!/bin/bash echo erase.... make erase_flash if (( $? > 0 )) ; then echo erase flash failed exit fi echo spiffs.... python /home/esp32/esp/esp-idf/components/esptool_py/esptool/esptool.py --chip esp32 --port /dev/ttyUSB0 --baud 115200 write_flash -z 0xb000...

Hi Angus Thanks for commenting, I really appreciate your help. The board in use is self made. Around a ESP-WROOM-32 module there is a power supply for a wider supply voltage range, an I2C port expander, level IO, RS232, CAN, sd-card support among others. Regarding reset, boot, flashing: The circuitr...