What is the meaning of startup text on ESP32

[jack.fury413]

Hi guys, I'm wondering what the startup text means ? For example:

Code: Select all

rst:0x10 (RTCWDT_RTC_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0x00
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0008,len:8
load:0x3fff0010,len:160
load:0x40078000,len:10632
load:0x40080000,len:252
entry 0x40080034

Thanks

[WiFive]

Reset reason code, boot mode (strapping pins)
Read spi config from efuse and flash image header
Copy 2nd stage bootloader to ram and run it

[jack.fury413]

Thanks but what is this line meaning ?

Code: Select all

mode:DIO clock:div 1

And is there any document about this.

[WiFive]

I think it means the SPI flash is set to DIO mode and clocked at 80mhz. This is only until the second stage bootloader takes over.

No docs about ROM bootloader really. What are you trying to figure out?

[jack.fury413]

Thanks, seems like you get the point.
I'm trying to get the information about hardware configuration: system clock, operating mode (power saving) and reset reason (catching watchdog if any).
So if there is any place or somehow that I can get to know them, please show me.

[kolban]

Howdy,
There is a good load of information found here:

http://esp-idf.readthedocs.io/en/latest/

and also the Technical Reference Manual contains lot of good information at the lowest possible levels ... see:

http://espressif.com/sites/default/file ... ual_en.pdf

[pranav]

What Kolban has suggested is the best resource for all available APIs. However if it is the reset reasons that you need, there is an example code written for arduino-esp32 linked here.

Hope it helps you

[jack.fury413]

Sorry that I was out for a while.
Thanks guys, I'm gonna check out the link, now I'm busy with the SD card issue but I think I'm gonna open another thread for it.