Search found 51 matches

by chrismerck
Tue Nov 26, 2019 10:44 pm
Forum: Hardware
Topic: External RAM failed memory test
Replies: 3
Views: 213

External RAM failed memory test

Is there a known hardware issue with WROVER modules having intermittent "External RAM failed memory test"? We've seen a few dozen units with this problem that prevents boot after a few days of operation, so unfortunately we did not catch in post-production test: E (1547) spiram: SPI SRAM memory test...
by chrismerck
Thu Nov 07, 2019 7:08 pm
Forum: ESP32 IDF
Topic: Add User Data to Coredump
Replies: 0
Views: 122

Add User Data to Coredump

Is it possible to add user data to the coredump written to flash, or otherwise add a C hook at time of crash? Why: When coredumps are uploaded from the field, we need to know the exact version number & buildtime so we can look up the corresponding ELF. The version of the firmware performing the core...
by chrismerck
Thu Oct 31, 2019 10:08 pm
Forum: ESP32 IDF
Topic: Receiving more than 64 RMT Items
Replies: 0
Views: 326

Receiving more than 64 RMT Items

@esp_sprite quick question: When receiving from RMT using rmt_get_ringbuf_handle, how can we receive more than 64 rmt items? I try allocating a *lot* of memory for the ring buffer (enough for 1000 items): rmt_driver_install(rle->rmt_config.channel, 8000, 0); But if I transmit more than 64 items, I a...
by chrismerck
Mon Oct 21, 2019 6:12 pm
Forum: Hardware
Topic: ESP32 co-existence with 3rd party 802.15.4/BLE/Zigbee chipset?
Replies: 3
Views: 3148

Re: ESP32 co-existence with 3rd party 802.15.4/BLE/Zigbee chipset?

As far as we know the ESP8266 has built-in HW register for the co-existence GPIO. But for the ESP32 variants there is no information regarding this radio system co-existence feature. This is mandatory when dealing with FCC and the other radio regulations. Did you ever get an answer here, Rivers? I'...
by chrismerck
Thu Sep 05, 2019 5:49 pm
Forum: General Discussion
Topic: RTOS running on one core only
Replies: 32
Views: 4835

Re: RTOS running on one core only

temporarily enable interrupts again on core 1 At which time you introduce potential delays into the code executing on core 1. The code sniplet you posted in your original message seems to suggest that you disable and enable interrupts with each iteration of your busywait loop on core 1. Our require...
by chrismerck
Thu Sep 05, 2019 4:16 pm
Forum: General Discussion
Topic: RTOS running on one core only
Replies: 32
Views: 4835

Re: RTOS running on one core only

only for brief moments Thanks for the quick reply! The minimum duration of those brief moments is dictated by the design of ESP-IDF. I'm not sure what Espressif's design latency is, but empirical testing on our end makes it seem greater than our requirement of <12uS, because we are missing deadline...
by chrismerck
Thu Sep 05, 2019 12:32 pm
Forum: General Discussion
Topic: RTOS running on one core only
Replies: 32
Views: 4835

Re: RTOS running on one core only

Hey AP, in fact, we have run into a similar issue here. If you read in the ESP-IDF version of FreeRTOS code, you will see conditional compilation in many places like this: #if !CONFIG_FREERTOS_UNICORE You will often see while loops used to spinlock waiting for the other core to release some resource...
by chrismerck
Thu Aug 22, 2019 2:00 pm
Forum: ESP32 IDF
Topic: [SOLVED] bootloop using v3.2 bootloader with v3.3-rc app
Replies: 4
Views: 371

Re: bootloop using v3.2 bootloader with v3.3-rc app

Thanks Angus! So, was my mistake to use the tag v3.3-rc rather than the latest on the branch.

WiFive: see the beta forum post here: https://forum.bondhome.io/t/bond-v2-platform/466 The units with serials starting ZZ are ESP32-based.
by chrismerck
Wed Aug 21, 2019 7:40 pm
Forum: ESP32 IDF
Topic: [SOLVED] bootloop using v3.2 bootloader with v3.3-rc app
Replies: 4
Views: 371

[SOLVED] bootloop using v3.2 bootloader with v3.3-rc app

We get a crash in the v3.1 (or v3.2) bootloader when attempting to jump to the v3.3-rc application. Note that if I upgrade the bootloader to v3.3-rc, it works fine. Is there any known incompatibility here? I can try reproducing with a minimal example if that helps. Rebooting... I (29) boot: ESP-IDF ...
by chrismerck
Tue Aug 20, 2019 6:47 pm
Forum: ESP32 IDF
Topic: [SOLVED] Google WiFi Compatibility
Replies: 2
Views: 507

Re: Google WiFi Compatibility

Good news! IDF v3.3-rc *seems* to fix the issue. It is hard to tell, as this is an intermittent issue, but my trials so far are very promising.

Thank you Espressif for the incredible work in maintaining ESP-IDF. It's mindblowing how well you support this platform...

Go to advanced search