Board

esp32

Device Description

esp32

Hardware Configuration

not have

Version

v2.0.1

IDE Name

Arduino IDE

Operating System

windows10

Flash frequency

80

PSRAM enabled

no

Upload speed

921600

Description

I want to change the I2C clock, but I find that if the frequency exceeds 100K, the IIC frequency will not change to the size I set. For example, if I set 400K, it can only reach about 350K. Is there any way to optimize it?

Sketch

#include "Wire.h"

void setup() {
  Serial.begin(115200);
  Wire.begin(SDA,SCL,(uint32_t)409600);
}

void loop() {
  byte error, address;
  int nDevices = 0;

  Serial.println("Scanning for I2C devices ...");
  for(address = 0x01; address < 0x7f; address++){
    Wire.beginTransmission(address);
    error = Wire.endTransmission();
  }
}

Debug Message

not have

Other Steps to Reproduce

not have

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.