Unable to read data on arduino serial monitor

MAVLink
13

Okay, this is my full code. I am trying to send the request command so that I can read the IMU values (without changing the mode).

#include <mavlink.h>

void setup() {
  Serial.begin(57600);
  Serial1.begin(57600);
}

void loop() {

mavlink_message_t message;
uint8_t msgReceived = false;
mavlink_status_t status;


uint8_t buf[MAVLINK_MAX_PACKET_LEN];
mavlink_msg_command_long_pack(1, 241, &message, 1, 1, MAV_CMD_SET_MESSAGE_INTERVAL, 1, 105, 0, 0, 0, 0, 0, 0);
uint16_t len = mavlink_msg_to_send_buffer(buf, &message);
Serial1.write(buf, len);

if (Serial1.available() > 0) {
    uint8_t result = Serial1.read();

    msgReceived = mavlink_parse_char(MAVLINK_COMM_1, result, &message, &status);

    if (msgReceived) {
      switch (message.msgid) {
        case MAVLINK_MSG_ID_HEARTBEAT:
          {
            mavlink_heartbeat_t hb;
            mavlink_msg_heartbeat_decode(&message, &hb);
            Serial.print("\n");
            Serial.println("Heartbeat Message");
            Serial.print("Msgid: ");  Serial.println(message.msgid);
            Serial.print("Type: ");  Serial.println(hb.type);
            Serial.print("Autopilot type: ");  Serial.println(hb.autopilot);
            Serial.print("System mode: ");  Serial.println(hb.base_mode);
            Serial.print("Custom mode: ");  Serial.println(hb.custom_mode);
            Serial.print("System status: ");  Serial.println(hb.system_status);
            Serial.print("Mavlink version: "); Serial.println(hb.mavlink_version);
            delay(1000);
          }
        case MAVLINK_MSG_ID_HIGHRES_IMU:
          {
            mavlink_highres_imu_t highres;
            mavlink_msg_highres_imu_decode(&message, &highres);

            Serial.print("HiRes IMU Msgid: ");  Serial.println(message.msgid);
            Serial.print("Xacc: "); Serial.println(highres.xacc);
            Serial.print("Yacc: "); Serial.println(highres.yacc);
            Serial.print("Zacc: "); Serial.println(highres.zacc);
            Serial.print("Xgyro: "); Serial.println(highres.xgyro);
            Serial.print("Ygyro: "); Serial.println(highres.ygyro);
            Serial.print("Zgyro: "); Serial.println(highres.zgyro);
            Serial.print("Xmag: "); Serial.println(highres.xmag);
            Serial.print("Ymag: "); Serial.println(highres.ymag);
            Serial.print("Zmag: "); Serial.println(highres.zmag);
            Serial.print("Absolute Pressure: "); Serial.println(highres.abs_pressure);
            Serial.print("Diff Pressure: "); Serial.println(highres.diff_pressure);
            Serial.print("Pressure Alt : "); Serial.println(highres.pressure_alt);
            Serial.print("Temperature : "); Serial.println(highres.temperature);
            Serial.print("\n");
            delay(1000);
          }
        default :
          {
            Serial.println(message.msgid);
          }

      }//switch
    }//if msg
  }//if serial 1
}//loop

However, I cannot get the HIGHRES_IMU message ID to go through the switch case even after sending the command. The switch case goes straight to default and prints some inconsistent message IDs like #77 and #30.