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Is there a way to trigger download boot mode by software?
Posted: Sat Apr 15, 2023 2:03 pm
by fanhuanji
The only way to switch to download mode I've found was to pull some pin physically during power up.
Is there a method to trigger download mode by app?
Re: Is there a way to trigger download boot mode by software?
Posted: Mon Apr 17, 2023 1:42 am
by ESP_Sprite
On which chip? The ESP32 doesn't have this, later chips (S2/S3, C series) sometimes do.
Re: Is there a way to trigger download boot mode by software?
Posted: Fri Apr 21, 2023 2:40 pm
by fanhuanji
ESP_Sprite wrote: ↑Mon Apr 17, 2023 1:42 am
On which chip? The ESP32 doesn't have this, later chips (S2/S3, C series) sometimes do.
On ESP32 S3 and C3.
Thanks for reply. Could you give some example please?
Some code snippet will help a lot.
Re: Is there a way to trigger download boot mode by software?
Posted: Sat Apr 22, 2023 3:32 am
by ESP_Sprite
You can try:
Code: Select all
REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT);
esp_restart();
(Note you probably need to include some headers to make that work, I'll leave that to you.)
Re: Is there a way to trigger download boot mode by software?
Posted: Sat Apr 22, 2023 8:18 am
by fanhuanji
ESP_Sprite wrote: ↑Sat Apr 22, 2023 3:32 am
You can try:
Code: Select all
REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT);
esp_restart();
(Note you probably need to include some headers to make that work, I'll leave that to you.)
Thanks. It works linke a charm.
Code: Select all
#include "esp_system.h"
#include "soc/rtc_cntl_reg.h"
/**
* @brief Software triggering download mode for ESP32 S3
*
*/
void GoToDownloadMode(void)
{
REG_WRITE(RTC_CNTL_OPTION1_REG, RTC_CNTL_FORCE_DOWNLOAD_BOOT);
esp_restart();
}