forked from Elron_dev/elbear_arduino_bsp
klassents
47c01383e6
- добавлена библиотека softwareSerial. Скорость работы до 57600 включительно и на отправку, и на прием. - в bootloader добавлена проверка контрольной суммы - добавлен файл wiringLL.h, в котором собраны некоторые макросы. Этими макросами заменены функции в местах, чувствительных к длительности выполнения кода. - общие функции обработки прерываний перенесены в ram память для увеличения скорости выполнения. Так же в память ram перенесены функции обработки прерываний модулей WInterrupt (прерывания от gpio), модуля tone, модуля softwareSerial - добавлен файл-заглушка util/delay.h, необходимый для некоторых библиотек
100 lines
2.6 KiB
C++
100 lines
2.6 KiB
C++
/*
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Software serial multiple serial test
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Receives from the two software serial ports,
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sends to the hardware serial port.
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In order to listen on a software port, you call port.listen().
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When using two software serial ports, you have to switch ports
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by listen()ing on each one in turn. Pick a logical time to switch
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ports, like the end of an expected transmission, or when the
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buffer is empty. This example switches ports when there is nothing
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more to read from a port
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The circuit:
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Two devices which communicate serially are needed.
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* First serial device's TX attached to digital pin 2(RX), RX to pin 6(TX)
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* Second serial device's TX attached to digital pin 8(RX), RX to pin 10(TX)
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Note:
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Not all pins on the Elbear Ace-Uno support interrupts,
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so only the following can be used for RX:
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2, 3, 4, 5, 8, 9
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*/
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#include <SoftwareSerial.h>
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// software serial #1: RX = digital pin 2, TX = digital pin 6
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SoftwareSerial portOne(2, 6);
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// software serial #2: RX = digital pin 8, TX = digital pin 10
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SoftwareSerial portTwo(8, 10);
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// active port is changed by user button pressing
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volatile bool isPortOneActive = true;
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void btn_pressed_callback(void)
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{
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// change active port
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if (isPortOneActive)
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{
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portTwo.listen();
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Serial.println("Port two is listening");
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isPortOneActive = false;
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}
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else
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{
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portOne.listen();
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Serial.println("Port one is listening");
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isPortOneActive = true;
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}
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}
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void setup()
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{
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// Open serial communications and wait for port to open
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Serial.begin(115200);
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while (!Serial) {
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; // wait for serial port to connect. Needed for native USB port only
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}
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// attach interrupt to user button
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attachInterrupt(digitalPinToInterrupt(BTN_BUILTIN), btn_pressed_callback, FALLING);
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// Start each software serial port
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portOne.begin(57600);
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portTwo.begin(57600);
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// First listen to port one
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portOne.listen();
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isPortOneActive = true;
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Serial.println("Port one is listening");
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}
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void loop()
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{
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// check data from port one
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if (portOne.available())
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{
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Serial.println("Data from port one:");
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// while there is data coming in, read it
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// and send to the hardware serial port
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while (portOne.available() > 0)
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Serial.write((char)portOne.read());
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// blank line to separate data from the two ports
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Serial.println();
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}
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// check data from port two
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if (portTwo.available())
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{
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Serial.println("Data from port two:");
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// while there is data coming in, read it
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// and send to the hardware serial port
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while (portTwo.available() > 0)
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Serial.write((char)portTwo.read());
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// blank line to separate data from the two ports
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Serial.println();
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}
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}
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