Analogwrite to RGB LED on Nano ESP32 does not turn off completely #10534
Description
Board
Arduino Nano ESP32
Device Description
Arduino Nano ESP32
Hardware Configuration
No
Version
latest development Release Candidate (RC-X)
IDE Name
Arduino IDE 1.0 and 2.0
Operating System
Windows 11
Flash frequency
NA
PSRAM enabled
yes
Upload speed
NB Arduino settings in board
Description
The RGB LED keeps on faintly when it should be off when writing 512 to the analog port of the LED_RED, LED_GREEN or LED_BLUE
When writing 513 the LED colour turns off.
So there is an one bit discrepantie
Sketch
int Toggle=0;
void setup() {}
void loop()
{
UpdateStatusLEDs(Toggle);
Toggle = 1 - Toggle;
delay (1000);
}
//-------------------------------------------- //
// COMMON Update routine for the status LEDs
//--------------------------------------------
void UpdateStatusLEDs(int Toggle)
{
if(Toggle)
{
SetStatusLED(Toggle * random(100), Toggle * random(100), Toggle * random(100));
analogWrite(48, Toggle * 50);
}
else
{
SetStatusLED(0,0,0);
analogWrite(48, 0); // on Nano ESP32 Turn the LED off
}
}
//--------------------------------------------
// COMMON Control the RGB LED on the Nano ESP32
// Analog range 0 - 512. 0 is LED On max intensity
// 512 is LED off. Therefore the value is subtracted from 512
//--------------------------------------------
void SetStatusLED(int Red, int Green, int Blue)
{
analogWrite(LED_RED, 512 - Red); // !Red (not Red) because 1 or HIGH is LED off
analogWrite(LED_GREEN, 513 - Green);
analogWrite(LED_BLUE, 513 - Blue);
}Debug Message
none
Other Steps to Reproduce
With the Arduino Nano ESP32 core 2.0.18 the RGB turns off completely.
When using core 3.0.5 up to the latest core 3.1.0 RC2 this occurs.
I have checked existing issues, online documentation and the Troubleshooting Guide
- I confirm I have checked existing issues, online documentation and Troubleshooting guide.