Search found 3011 matches

by WiFive
Mon Jan 25, 2021 5:38 pm
Forum: Hardware
Topic: The notorious "flash read err, 1000" - with a twist
Replies: 6
Views: 114

Re: The notorious "flash read err, 1000" - with a twist

What if you use a jumper to ground on reset instead of the button?
by WiFive
Sun Jan 24, 2021 10:24 pm
Forum: ESP-IDF
Topic: Questions in 2. stage bootloader code
Replies: 13
Views: 535

Re: Questions in 2. stage bootloader code

Flash, it is external and it is only connected by SPI. Two ways to access it, both over SPI. Either the cache/mmu will do the SPI transaction in the background or you will do it using API calls like esp_partiton. Flash cache and mmu have limitations due to design/silicon implementation. You just hav...
by WiFive
Sun Jan 24, 2021 10:14 pm
Forum: General Discussion
Topic: ESP32-S2 replacing Pico D4 - ESP NOW support, RTC and deep sleep
Replies: 3
Views: 304

Re: ESP32-S2 replacing Pico D4 - ESP NOW support, RTC and deep sleep

[*] Is ESP NOW already supported? Should be [*] Is an external crystal / oscillator needed in the hardware design or does the chip have an integrated one like the Pico D4? Yes, needed [*] The datasheet mentions a deep sleep current (RTC timer + RTC memory) of 25uA. Is this really the case? The Pico ...
by WiFive
Sun Jan 24, 2021 5:13 pm
Forum: General Discussion
Topic: query the WIFI IP in IDF
Replies: 2
Views: 71

Re: query the WIFI IP in IDF

TCPIP_ADAPTER_IF_AP != TCPIP_ADAPTER_IF_STA
by WiFive
Sun Jan 24, 2021 4:56 pm
Forum: Hardware
Topic: Powering ESP32 module directly
Replies: 3
Views: 106

Re: Powering ESP32 module directly

https://docs.espressif.com/projects/esp ... index.html

Hardware design guidelines and reference schematics are available
by WiFive
Sat Jan 23, 2021 4:24 pm
Forum: ESP-IDF
Topic: Questions in 2. stage bootloader code
Replies: 13
Views: 535

Re: Questions in 2. stage bootloader code

Technical Reference Manual 1.3.3 External Memory 26.3.2.2 External Memory https://docs.espressif.com/projects/esp-idf/en/latest/esp32/hw-reference/index.html Access all 16MB of the Flash, is this possible or are there limitations because of the 11.5MB You cannot access it all at once by memory mappi...
by WiFive
Thu Jan 21, 2021 10:33 pm
Forum: ESP-IDF
Topic: Software constantly reset after flash encyption. Factors for bootloader size?
Replies: 2
Views: 103

Re: Software constantly reset after flash encyption. Factors for bootloader size?

If your bootloader has no logging it is hard to say where the reset happens. It looks like the bootloader is correctly loaded from flash and executed. Does your app have logging so you at least know it happens before the app runs?
by WiFive
Thu Jan 21, 2021 10:25 pm
Forum: General Discussion
Topic: Small ESP32 Modul ( all include in new ESP32-PICO )
Replies: 147
Views: 69306

Re: Small ESP32 Modul ( all include in new ESP32-PICO )

ifranzki wrote:
Sat Jan 02, 2021 4:18 pm

in your PSRAM wiring in https://www.esp32.com/viewtopic.php?f=2 ... 100#p33336 is there a reason why you did not use FCLK (i.e. IO6) for SCLK, but IO10? As I read the doc, SPI-Flash and SPRAM shares the CLK line, so IO6....
Old psram chips could not share clock line
by WiFive
Wed Jan 20, 2021 4:47 pm
Forum: ESP-IDF
Topic: idf.py erase_flash doesn't work
Replies: 8
Views: 304

Re: idf.py erase_flash doesn't work

The Chip Erase (CE) command is executed, only if the Block Protect (BP2, BP1, and BP0) bits are 0 and CMP=0 or the Block Protect
(BP2, BP1, and BP0) bits are 1 and CMP=1.

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