38 lines
654 B
Arduino
38 lines
654 B
Arduino
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#include "Wire.h"
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#define I2C_DEV_ADDR 0x55
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uint32_t i = 0;
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void onRequest(){
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Wire.print(i++);
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Wire.print(" Packets.");
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Serial.println("onRequest");
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}
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void onReceive(int len){
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Serial.printf("onReceive[%d]: ", len);
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while(Wire.available()){
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Serial.write(Wire.read());
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}
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Serial.println();
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}
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void setup() {
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Serial.begin(115200);
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Serial.setDebugOutput(true);
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Wire.onReceive(onReceive);
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Wire.onRequest(onRequest);
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Wire.begin((uint8_t)I2C_DEV_ADDR);
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#if CONFIG_IDF_TARGET_ESP32
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char message[64];
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snprintf(message, 64, "%u Packets.", i++);
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Wire.slaveWrite((uint8_t *)message, strlen(message));
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#endif
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}
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void loop() {
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}
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