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❌ Limited buffer size, blocking, minimal error recovery.
void loop() // Send register address to read (e.g., 0x00) Wire.beginTransmission(0x68); // MPU6050 address Wire.write(0x00); Wire.endTransmission(false); // Send restart
// Request 2 bytes from slave Wire.requestFrom(0x68, 2);
void loop()
#include <Wire.h> int x = 42; void setup() Wire.begin(0x08); // Join bus as slave at address 0x08 Wire.onRequest(sendData); // Call function when master requests