Search found 2826 matches

by WiFive
Fri Dec 13, 2019 6:55 am
Forum: ESP32 IDF
Topic: Suggest rewriting some of the ESP-IDF UART doc
Replies: 1
Views: 52

Re: Suggest rewriting some of the ESP-IDF UART doc

Data is copied out of hardware fifo into ringbuffer when ringbuffer is full (threshold) or when frame ends (rx line idle).
by WiFive
Wed Dec 11, 2019 12:42 pm
Forum: General Discussion
Topic: How to use timer of esp32?
Replies: 4
Views: 200

Re: How to use timer of esp32?

Smarter to use rmt peripheral
by WiFive
Tue Dec 10, 2019 12:07 pm
Forum: General Discussion
Topic: CAN frame corruption following FATFS write to FLASH
Replies: 4
Views: 162

Re: CAN frame corruption following FATFS write to FLASH

The only things that run during flash write are IRAM interrupts. So the buffer will have to be big enough to hold all the data received during the flash write. Maybe you want to make sure the can interrupt is on a different core from the flash write. Using can hw filters could help. Or custom can is...
by WiFive
Sat Dec 07, 2019 1:57 am
Forum: ESP32 IDF
Topic: PWM Generating at expanded GPIO
Replies: 3
Views: 176

Re: PWM Generating at expanded GPIO

The best way is use an expander that has a built in led driver
by WiFive
Thu Dec 05, 2019 12:35 pm
Forum: Hardware
Topic: ESP32 BLE 2018 V 2019 boards problem
Replies: 1
Views: 104

Re: ESP32 BLE 2018 V 2019 boards problem

If the binary is the same and you fully erased the flash then it could be a hardware rf problem. There was a report of a bad capacitor issue on this forum but I don't think there was any official statement about it.
by WiFive
Thu Dec 05, 2019 7:03 am
Forum: ESP32 IDF
Topic: 32-character long WiFi SSID Support
Replies: 1
Views: 86

Re: 32-character long WiFi SSID Support

It should be either 32 characters long OR NULL-terminated, but I haven't tried.

https://github.com/espressif/esp-idf/issues/3762
by WiFive
Thu Dec 05, 2019 6:54 am
Forum: General Discussion
Topic: power save in esp32 with running can bus
Replies: 5
Views: 277

Re: power save in esp32 with running can bus

If you use an external can controller maybe you can use light sleep, otherwise probably not much.
by WiFive
Thu Dec 05, 2019 6:45 am
Forum: General Discussion
Topic: How to increase SPIRAM speed?
Replies: 1
Views: 117

Re: How to increase SPIRAM speed?

80mhz is the max
by WiFive
Tue Dec 03, 2019 7:25 am
Forum: ESP32 IDF
Topic: Question about the IDF compatibility issue with Zephyr project
Replies: 9
Views: 403

Re: Question about the IDF compatibility issue with Zephyr project

I think esp32 is still barely supported on zephyr. Only uart,gpio,i2c are listed, no networking. I'm not sure exactly how that relates to successful build with binary issues but...

Go to advanced search