Ameba Arduino: [RTL8722CSM] [RTL8722DM] [RTL8722DM MINI] Timer - Using the Single-Use GTimer


  • AmebaD [RTL8722DM / RTL8722CSM / RTL8722DM MINI] x 1


In this example, we use five single-use GTimer, and carry user data in eac timer.
Open the example “File” -> “Examples” -> “AmebaGTimer” -> “TimerOneshot”. Compile and upload to Ameba, and press reset.
Then you can see the 5 timers print out log to the serial monitor in series.

Code Reference

The first argument of begin() is the Timer ID (0~4). The second argument is the value of the timer (in microseconds). In the example, we fill in 1000000us = 1s. The third argument specifies the function to call when the time is up. The fourth argument is to set whether this timer is a periodic timer, we use “false” here to begin a single-use timer. The fifth argument is the user data, we give 0 here to represent that this is timer 0.

GTimer.begin(0, 1 * 1000 * 1000, myhandler, false, 0);

Next, we set up the second timer, which has timer value 2 seconds, and user data 1. And other timers are set similarly.

GTimer.begin(1, 2 * 1000 * 1000, myhandler, false, 1);

In myhandler function, we print the user data to serial monitor. Since the five timers are separately set to count for 1, 2, 3, 4, 5 seconds, from 1 second to 5 second, the user data of each timer are printed on the serial monitor in order. After 5 second, no log will be printed.

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