DFPlayer Pro command delay

J-M-L · March 28, 2024, 2:03pm

the function awaits an ACK from the module

DFRobot/DFRobot_DF1201S/blob/9c756dc62a95807c20897020c3c7fe5fa6fec440/src/DFRobot_DF1201S.cpp#L250-L262


      
          bool DFRobot_DF1201S::playFileNum(int16_t num)
          {
             if (curFunction != MUSIC) return false;
             sPacket_t cmd;
             cmd = pack("PLAYNUM", String(num));
             writeATCommand(cmd.str, cmd.length);
             pauseFlag = 1;
             if (readAck() == "OK\r\n") {
                return true;
             } else {
                return false;
             }
          }

may be this ACK takes time when a song is playing

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DFPlayer Pro command delay

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