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There is a great, very basic tutorial on reading from serial and printing to serial using printf() on SparkFun. I don't think I'm allowed to post their code here, so here is direct link to tutorial: I don't think I'm allowed to post their code here, so here is direct link to tutorial. WinAVR, AVR Studio atau AVR GCC secara default, linker option-nya di-set standard yaitu tanpa floating point conversion. Jadi kita ingin mengirim string dengan basic integer number, maka gunakan minimized version. Maka gunakan linker option sebagai berikut. Author: Robert-Maarten Schuurman Date:. Software: AVR-GCC 3.3. Target: Any AVR device with a single UART and the registers named like. There's also included a printf() function dedicated for the serial. Connection, you can use this function like the normal printf().

You have two issues here: The first is that you are using the Arduino core library and failed to initialize it. This is done automatically if you rely on the core's supplied main(), i. Remove Restrictions Tool Free Download Crack Internet on this page. e. You stick with the setup()/ loop() style of coding. If you write your own main(), you should start by calling init() to initialize the core.

Edit: In this particular instance, you could get away by just enabling interrupts with sei(). But I consider it good practice to initialize the core if you are ever going to use it. The second issue is the abrupt termination of main: Serial.print() and println() do not really print to the serial port. Instead, they put the characters to be printed in the output buffer, and let an interrupt take care of actually sending them through the UART. Your program ends with return 0; This will stop it. It will stop the whole program, including interrupt-driven tasks. So you will see whatever characters did make it to the UART, and nothing more.

If you instead end the program with and endless loop for (;;); it should work as expected.