ESP32-S3 LEDC glitch
Posted: Tue Sep 24, 2024 11:37 pm
Hi,
I'm experiencing an issue with the ledc module.
When the pwm is set to 0% or 100%, and the processor accesses the flash memory/spiram memory, which is 1.8V in my case, a random glitch of 10us appears on the oscilloscope.
It is normal that glitch ?
NOTE:
* LEDC 10Khz frequency config, 12 bits resolution.
* I am using GPIO48 on ESP32-S3-DEVKITC-1_V1, so the output voltage is 1,8V pwm signal.
* In the devkit there is an RGB LED connected to this pin too, i believe that this RGB LED is not generating this glitch because the signal is connected to its input rgb led pin.
* ESP32-S3-WROOM-2-N32R8V
* esp-idf v5.3.1
Thanks.
I'm experiencing an issue with the ledc module.
When the pwm is set to 0% or 100%, and the processor accesses the flash memory/spiram memory, which is 1.8V in my case, a random glitch of 10us appears on the oscilloscope.
It is normal that glitch ?
NOTE:
* LEDC 10Khz frequency config, 12 bits resolution.
* I am using GPIO48 on ESP32-S3-DEVKITC-1_V1, so the output voltage is 1,8V pwm signal.
* In the devkit there is an RGB LED connected to this pin too, i believe that this RGB LED is not generating this glitch because the signal is connected to its input rgb led pin.
* ESP32-S3-WROOM-2-N32R8V
* esp-idf v5.3.1
Thanks.