Search found 4110 matches

by ESP_Sprite
Mon Nov 23, 2020 1:29 am
Forum: ESP32 Arduino
Topic: Game ROM on SD card
Replies: 17
Views: 741

Re: Game ROM on SD card

Radu79: Serialization can also mean that you have game logic as an interconnected set of structs and objects in memory and need to 'flatten' it to store it in e.g. a file. I imagine that's the way nezvers used the word. Nezvers: You can't execute code in a practical sense from anywhere other than fl...
by ESP_Sprite
Mon Nov 23, 2020 1:18 am
Forum: General Discussion
Topic: Fastest way to transfer data
Replies: 4
Views: 173

Re: Fastest way to transfer data

WiFi would certainly be the fastest way to do that. As an alternative to that, SDIO is also pretty fast, but a lot harder to implement with a PC, so I'd go for WiFi.
by ESP_Sprite
Mon Nov 23, 2020 1:14 am
Forum: General Discussion
Topic: After how long do i expect the module to wear out?
Replies: 5
Views: 251

Re: After how long do i expect the module to wear out?

As long as you use them within spec (e.g. not putting 5V on an IO line directly) the chips should last forever. The flash does have a limited lifespan, but unless you write to it extensively it should have a practical lifetime of decades. Perhaps it's indeed a component in your power supply that has...
by ESP_Sprite
Sat Nov 21, 2020 3:36 pm
Forum: Hardware
Topic: DRV8825 Stepper Motor Timer and Clock
Replies: 3
Views: 383

Re: DRV8825 Stepper Motor Timer and Clock

Good point. Moved to hardware.
by ESP_Sprite
Sat Nov 21, 2020 3:30 pm
Forum: ESP-IDF
Topic: Esp32 flash memory explorer
Replies: 2
Views: 331

Re: Esp32 flash memory explorer

Esptool.py (included in the esp-idf as a submodule) can dump the flash of an attached ESP32. If it contains a filesystem, you'd have to find a way to get the files from there yourself, though.
by ESP_Sprite
Fri Nov 20, 2020 7:39 am
Forum: ESP-IDF
Topic: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?
Replies: 5
Views: 602

Re: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?

Technically, the flash in an ESP32 module is an 'external IC' as in the flash is not on the die itself, so in that aspect it's more-or-less the same as you're used to. The difference is that the ESP32 has some advanced caching that transparently can allow memory access to the chip, so it's not advis...
by ESP_Sprite
Fri Nov 20, 2020 6:06 am
Forum: ESP-IDF
Topic: standalone manufacturing
Replies: 2
Views: 356

Re: standalone manufacturing

You probably want to use esptool.py directly if you want to flash binaries. You can run 'idf.py build' on a machine with the sources installed to get an idea of the command line you'd want to use.
by ESP_Sprite
Thu Nov 19, 2020 9:21 am
Forum: ESP32 Arduino
Topic: Connecting relay module to heltec esp32 v2
Replies: 2
Views: 141

Re: Connecting relay module to heltec esp32 v2

> When i connect the vcc of the relay to 3.3v then the relay is not turned on and neither the red led or tge green led is turned on.

Well, there's your likely problem. The ESP32 only can output up to 3.3V on its GPIOs, and presumably your relay needs 5V minimum.
by ESP_Sprite
Thu Nov 19, 2020 1:46 am
Forum: ESP-IDF
Topic: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?
Replies: 5
Views: 602

Re: Can I write directly to flash/partition without fatfs/wear lvl etc drivers?

From what I recall, FatFS is only robust to power fails in some configurations. The docs should have more information about this. It's possible to directly access partitions. You can use the SPI flash api to either do that or write to the entire flash. (Just in case: do make sure you're aware of NOR...
by ESP_Sprite
Wed Nov 18, 2020 1:55 am
Forum: Hardware
Topic: ESP32-S2 flashing with built in USB
Replies: 3
Views: 305

Re: ESP32-S2 flashing with built in USB

Note that you may still want to have a boot/reset button (or other method, like a header) on your board, as the DTR/RTS implementation is in software: the USB driver emulates a CDC-ACM serial port and looks at the 'virtual' DTR/RTS lines on that to reset the chip into download mode. If the software ...

Go to advanced search