EthercatDevice_DmpHID.lcmWrite()

[EthercatDevice_DmpHID_Generic]

描述

Print one character to the LCM screen of the EtherCAT slave device.

衍生類別：

語法

int lcmWrite(char c);

參數

• [in] char c
  The character to be printed on the LCM screen.

回傳值

Return the number of characters printed to the LCM screen. If the return value is smaller than 0, it means an 錯誤代碼.

備註

This function must be called after a successful execution of EthercatMaster::begin(). This function is non-blocking and can be called within the Cyclic Callback.

範例

#include "Ethercat.h"

EthercatMaster master;
EthercatDevice_QECR11HU9S slave;

void CyclicCallback() {
  slave.update();
}

void setup() {
  master.begin();
  slave.attach(0, master);
  master.attachCyclicCallback(CyclicCallback);
  master.start();

  slave.lcmWrite('H');
  slave.lcmWrite('e');
  slave.lcmWrite('l');
  slave.lcmWrite('l');
  slave.lcmWrite('o');
  slave.lcmWrite('!');
}

void loop() {
  // ...
}

Please see EthercatDevice_DmpHID_Generic 類別 for more QEC HID slave instructions and API usage.