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STA5 SmartLink command guidance

STA5 SmartLink command guidance

Agenda

Requirement

  • Platform: STA5

  • The version can be found in sml_def.h, please follow the latest version.

  • Please import below files to your project, they’re under SmartLink build folder:

export
  ├── include
  │   ├── libunixsocket.h
  │   ├── sml_def.h  
  │   └── sml_data_format.h  
  └── libsocket.so

APIs

  • To connect:
ret = sfd = create_unix_stream_socket(TMP_SOCKET_SML, 0);
if (ret < 0) {
    perror(0);
    exit(1);
}
  • Send message:
ret = write(sfd, &send_data, sizeof(send_data));
if (ret < 0) {
    perror(0);
    goto ERR_EXIT;
}
  • Receive message:
ret = bytes = read(sfd, buf, MAX_MESSAGE_READ);
if (ret < 0) {
    perror(0);
    exit(1);
}

SmartLink data format

Data member Date type Data length Description
version unsigned char 1 byte Set to SML_MAJOR_VERSION.
mode unsigned char 1 byte Refer to type REQ_MODE.
AppType unsigned char 1 byte Refer to type APP_TYPE.
state unsigned char 1 byte Refer to type SML_STATE_CODE.
AppClientID unsigned int 4 bytes Client ID.
srcAppName unsigned char[128] 128 bytes Source application name in string.
dstAppName unsigned char[128] 128 bytes Destination application name in string.
cmd unsigned int 4 bytes Refer to type SML_COMMAND.
len unsigned int 4 bytes Total length of message in bytes.

SmartLink data base structure

Data member Date type Data length Description
index int 4 bytes
DeviceName[32] char 32 bytes Phone Name.
usbSerialNumber[32] char 32 bytes USB serial number.
btMacAddress[32] char 32 bytes Bluetooth MAC address.
SupportedAPP int 4 bytess Refer to APP_TYPE.

Command

Subscribe

  • From APPs - Client
  • To subscribe the service from SmartLink. Send below message to SmartLink.
Data member Value
version SML_MAJOR_VERSION
mode E_DELEGATE
AppType Refer to type APP_TYPE.
state E_STATE_OK
AppClientID Client ID.
srcAppName Source application name in string.
dstAppName "SML"
cmd E_REQ_SUBSCRIBE
len Total length of message in bytes(288).
  • From SmartLink: No return message.

On Top Notification

  • From APPs - Client
  • Notify SmartLink when APP is on Projection mode. Send below message to SmartLink.
Data member Value
version SML_MAJOR_VERSION
mode E_DELEGATE
AppType Refer to type APP_TYPE.
state E_STATE_OK
AppClientID Client ID.
srcAppName Source application name in string.
dstAppName "SML"
cmd E_REQ_I_AM_TOP
len Total length of message in bytes(288).
  • From SmartLink: No return message.

On Top Notification for Android Auto

  • From AA - Client
  • Notify SmartLink when APP is on Projection mode. Send below message to SmartLink.
Data member Value
version SML_MAJOR_VERSION
mode E_DELEGATE
AppType Refer to type APP_TYPE.
state E_STATE_OK
AppClientID Client ID.
srcAppName "AA"
dstAppName "SML"
cmd E_REQ_I_AM_TOP
len Total length of message in bytes(288+64).
---Outside of 288 bytes---
UsbSerialNumber[32] 32 bytes, the USB serial number of MD.
BtMacAddress[32] 32 bytes, the BT MAC address of MD.
  • From SmartLink: No return message.

Get Up

  • From SmartLink - Server
  • Notify APP to enter Projection mode.
Data member Value
version SML_MAJOR_VERSION
mode E_DELEGATE
AppType Refer to type APP_TYPE.
state E_STATE_OK
AppClientID Client ID.
srcAppName "SML"
dstAppName Received Application name.
cmd E_GET_UP
len Total length of message in bytes(288).