ESP32 Forum

Posted: **Thu Mar 24, 2022 8:22 pm**

I use an esp32 wroom module for my project, however when connecting my board to power or when I upload my firmware it needs to be manually reset to start the program, the message on power-on is

Code: [Select all] [Expand/Collapse]

 rst:0x1 (POWERON_RESET),boot:0x2 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_FEO_V2)) waiting for download 

GeSHi © Codebox Plus Extension

my strapping pins state as follow
pin 0,2 ,12,15 as float
pin 4,5 connect to can transceiver as RX,TX
any tips really appreciated

Posted: **Fri Mar 25, 2022 7:34 am**

The design guides recommend a 1uF capacitor between the enable pin and ground to introduce a short delay between power up and boot, which can cause this issue.

ESP32 Forum

boot:0x2 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_FEO_V2)) waiting for download

boot:0x2 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_FEO_V2)) waiting for download

Re: boot:0x2 (DOWNLOAD_BOOT(UART0/UART1/SDIO_REI_FEO_V2)) waiting for download