Search found 50 matches
- Mon Apr 09, 2018 7:46 pm
- Forum: General Discussion
- Topic: Flash write speed
- Replies: 1
- Views: 5135
Flash write speed
Hello, We recently switched the SPI flash chip on our product. We went from Winbond (W25Q32JV) to Macronix (MX25R3235F). For some reason flash write speeds decreased by a factor of 3. This includes both flashing and formatting SPIFFS speeds. With winbond we were able to flash fw or format spiffs in ...
- Mon Jan 29, 2018 2:45 pm
- Forum: General Discussion
- Topic: RF Certifications Test Suite
- Replies: 1
- Views: 3350
RF Certifications Test Suite
Hi,
Is there a test suite for doing RF certifications? We need to do FCC, UL, and CE. Is there firmware that will cycle through all channels, data rates, etc.?
Thanks,
Konstantin
Is there a test suite for doing RF certifications? We need to do FCC, UL, and CE. Is there firmware that will cycle through all channels, data rates, etc.?
Thanks,
Konstantin
- Thu Jan 25, 2018 3:45 pm
- Forum: ESP-IDF
- Topic: esptool fatal error
- Replies: 3
- Views: 4887
Re: esptool fatal error
ESP_Angus, thanks for help. Updating esp tool to 2.2.1 fixed the issue.
- Wed Jan 24, 2018 10:35 pm
- Forum: ESP-IDF
- Topic: esptool fatal error
- Replies: 3
- Views: 4887
esptool fatal error
Something was recently changed in ESP-IDF and now I can no longer program at 1500000 baud. The max it will do is 115200. Anything higher than that and I get: A fatal error occurred: Invalid head of packet Any ideas what could be causing this? Nothing changed but the esp-idf was updated. 1500000 baud...
- Thu Jan 11, 2018 3:07 pm
- Forum: Hardware
- Topic: What are Main Crystal requirements?
- Replies: 3
- Views: 7620
Re: What are Main Crystal requirements?
Current data sheet and hardware design guide for ESP32 only mentions the frequency of the main crystal. Are there stability and accuracy requirements? We currently use 10ppm, but 40-50ppm are cheaper. Are those an option?
- Mon Nov 06, 2017 6:26 pm
- Forum: General Discussion
- Topic: Pre-programming flash at manufacturing
- Replies: 4
- Views: 9323
Re: Pre-programming flash at manufacturing
What's the easiest way to combine the 3 separate bin files into one single bin?
- Fri Oct 20, 2017 2:25 pm
- Forum: General Discussion
- Topic: NVS and wear leveling
- Replies: 2
- Views: 6741
NVS and wear leveling
Does NVS use wear leveling? If not, any plans to support it?
In our use case, we update a value in NVS every few mins and would hit 100,000 in about a year.
In our use case, we update a value in NVS every few mins and would hit 100,000 in about a year.
- Sun Oct 01, 2017 6:34 pm
- Forum: Hardware
- Topic: ADC input impedance
- Replies: 6
- Views: 19257
ADC input impedance
Does anyone know... what is the input impedance of the ADC? Also, what are the resistor values of the attenuator pad?
- Mon Aug 21, 2017 8:56 pm
- Forum: Hardware
- Topic: WiFi power spikes
- Replies: 4
- Views: 8077
WiFi power spikes
We have a custom ESP32 board and we're seeing periodic current spikes (thin blue lines on attached image) to about 400mA. This seems to be related to WiFi operation as it doesn't happen if WiFi is off. They are very short so we suspect it's just an artifact of WiFi radio turning on. Has anyone exper...
- Fri Jul 28, 2017 11:38 pm
- Forum: General Discussion
- Topic: Unexpected TG1WDT_SYS_RESET in deep sleep
- Replies: 3
- Views: 5649
Re: Unexpected TG1WDT_SYS_RESET in deep sleep
It happens within a couple of seconds. I don't know if the chip actually makes it to sleep before it resets.WiFive wrote:So this happens right away, the int watchdog resets the chip before it makes it to deep sleep?