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DFR0654 Datasheet(PDF) 37 Page - DFROBOT |
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DFR0654 Datasheet(HTML) 37 Page - DFROBOT |
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37 / 122 page  2023/10/12 11:00 FireBeetle_Board_ESP32_E_SKU_DFR0654-DFRobot https://wiki.dfrobot.com/FireBeetle_Board_ESP32_E_SKU_DFR0654 37/122 9.4 Serial Port Preparation: FireBeetle 2 ESP32-E (https://www.dfrobot.com/product-2195.html) (SKU: DFR0654) ×1 Function Description: We have learned how to light up the LED through the IO port before. In this lesson, we'll learn about the principle of serial communication. FireBeetle 2 ESP32-E development board has two hardware serial ports, and both of them are remappable. UART0, also Serial in Arduino, is used for USB. Serial Name Arduino TX RX UART0 Serial pin1 pin3 UART2 Serial2 pin17 pin16 Sample Code: Program function: the UART serial prints timing data once per second. Result: void setup() { Serial.begin(115200); //Initialize the serial port and set the baud rate to 115200 } void loop() { static unsigned long i = 0; //Static variables(local variables), initialized only once Serial.println(i++); //serial prints i++ delay(1000); } |
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