HM-10：可能有些AT指令没有实现？

Question

我正在开发一个项目，其中 PIC dsPIC33 通过串行端口连接到 HM-10 设备。我向设备发送 AT 命令，但似乎某些 AT 命令未在 HM-10 固件中实现。详细：

AT+RESET - > OK+RESET       : it works
AT+RENEW  -> OK+RENEW       : it works
AT+NAME?  -> OK+NAME:HMSoft : it works
AT+VER?   -> no answer      : it doesn't work
AT+VERS   -> no answer      : it doesn't work
AT+NAMEaa -> no answer      : it doesn't work

你遇到过类似的问题吗？非常感谢您的帮助与合作亲切的问候

Answer 1

看看datasheet。没有 AT+VER? 或 AT+VERS 命令。他们是 AT+VERR? 和 AT+VERS?。

我用 HC-06 做了一些测试，有些命令需要 CR，有些则不需要。也许这也是你的问题？

我在 Arduino 草图中使用此代码为 HC-06 设置 BT 设备名称：

// Enter AT command mode
if (enterATCommandMode() == true)
{
    // Set the name. As we don't have an end-of-line mark, we need to wait until the
    // timeout is reached and hope for the best. We also check whether the reply starts
    // with "OK", so have at least some indication things worked.
    hc06.print("AT+NAME" + userInput);
    String reply = hc06.readString();
    if (reply.equals(""))
    {
      Serial.println(F("HC-06 didn't reply in time!"));
    }
    else
    {
      if (reply.length() < 2 || !reply.substring(0,2).equalsIgnoreCase(F("OK")))
        Serial.println("Unexpected answer ('" + reply + "') to AT+NAME command!");
      else  
        Serial.println(F("Name was set successfully."));
    }
}


bool enterATCommandMode()
{
  // This buffer receives at most 2 characters as the reply (plus terminating [=10=])
  char atReplyBuffer[] = { '[=10=]', '[=10=]', '[=10=]' };

  // Send AT command and receive answer
  hc06.print(F("AT"));
  int bytesRead = hc06.readBytesUntil('[=10=]', atReplyBuffer, 2);
  String reply = String(atReplyBuffer);

  // Timed out or answer wasn't OK? Error.
  if (bytesRead != 2 || !reply.equalsIgnoreCase(F("OK")))
  {
    if (reply.equals(""))
      Serial.println(F("HC-06 didn't reply in time!"));
    else
      Serial.println("Unexpected reply ('" + reply + "') to AT command");

    return false;
  }

  // Success
  return true;
}

Answer 2

发送命令必须没有任何停顿！（我想）。如果我用下面的代码：（假设send8char *x）是写串口的函数）

send("AT+NAME");
send("myName"); // id doesn't work

char name[20];     
strcpy(name,"AT+NAME");
strcat(name,"myName");
send(name); // if works!!

HM-10：可能有些AT指令没有实现？

HM-10: maybe some AT commands are not implemented?

at-command

dspic

hm-10