The best way is use an expander that has a built in led driver Thanks for your reply! Do you have any suggestion? I found this one http://www.ti.com/lit/an/snva287a/snva287a.pdf. but I think it is overkill (16 IOs). I am looking for at max 4 IOs only single one of them should have PWM ability.

WiFive wrote: ↑

Sat Dec 07, 2019 1:57 am

The best way is use an expander that has a built in led driver

Thanks for your reply! Do you have any suggestion?

Hi, I have I2C GPIO expander. I used to generate PWM using ledc_channel_config , ledc_set_duty and ledc_update_duty at one of the original GPIOs of the ESP32. Is it possible to use those function to generate PWM at GPIO in the expander? If not, what s the best way to do this manually? I tried to sta...

Hi,

Is there a way to control the sound volume while playing mp3 file from SD card using ESP-ADF?

P.S. I am using hte original ESP32 Wrover module not a board like ESP32-LyraT.

Thanks!

Hi,

Are there any drawbacks for setting CPU frequency to 240 MHz other than the power consumption? For example, heating?

Thanks!

/** * @brief Configuration arguments for esp_vfs_fat_sdmmc_mount and esp_vfs_fat_spiflash_mount functions */ typedef struct { /** * If FAT partition can not be mounted, and this parameter is true, * create partition table and format the filesystem. */ bool format_if_mount_failed; int max_files; ///...

Hi,

Is it possible to format an SD card as FAT32 at runtime using ESP-IDF ?

Thanks!

Thank you very much! Your reply is very helpful

Hi, I am using pregenerated key without secure boot. I managed to do everything correctly as it was explained in the tutorial. Now, I want to create a script to flash the whole firmware(including bootloader and everything). I managed to do so except small problem: After burning the pregenerated key ...

Hi,
Is their a developer kit with more than 4MB flash?
Thanks!