SLAAEK9 February   2025 MSPM0C1103 , MSPM0C1103-Q1 , MSPM0C1104 , MSPM0C1104-Q1 , MSPM0C1105 , MSPM0C1106 , MSPM0G1105 , MSPM0G1106 , MSPM0G1107 , MSPM0G1505 , MSPM0G1506 , MSPM0G1507 , MSPM0G1518 , MSPM0G1519 , MSPM0G3105 , MSPM0G3105-Q1 , MSPM0G3106 , MSPM0G3106-Q1 , MSPM0G3107 , MSPM0G3107-Q1 , MSPM0G3505 , MSPM0G3505-Q1 , MSPM0G3506 , MSPM0G3506-Q1 , MSPM0G3507 , MSPM0G3507-Q1 , MSPM0G3518 , MSPM0G3518-Q1 , MSPM0G3519 , MSPM0G3519-Q1 , MSPM0H3216 , MSPM0L1105 , MSPM0L1106 , MSPM0L1117 , MSPM0L1227 , MSPM0L1227-Q1 , MSPM0L1228 , MSPM0L1228-Q1 , MSPM0L1303 , MSPM0L1304 , MSPM0L1304-Q1 , MSPM0L1305 , MSPM0L1305-Q1 , MSPM0L1306 , MSPM0L1306-Q1 , MSPM0L1343 , MSPM0L1344 , MSPM0L1345 , MSPM0L1346 , MSPM0L2227 , MSPM0L2228 , MSPM0L2228-Q1

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Introduction
  5. 2How MSPM0 Support LIN Function
    1. 2.1 Clock
    2. 2.2 LIN Hardware
    3. 2.3 LIN Demo Code in SDK
      1. 2.3.1 LIN Commander
      2. 2.3.2 LIN Responder
  6. 3LIN Communication Realization
    1. 3.1 Hardware Connection
    2. 3.2 Test Results
      1. 3.2.1 Commander
      2. 3.2.2 Responder
  7. 4Summary
  8. 5References

3.2.1 Commander

In this case, MCU serves as commander, and PC with CAN/LIN analysis serves as responder. Baud rate is 19200.

When selecting the Button1 to make MCU send 0x39(PID), the results are shown in Figure 3-2. As shown from Figure 3-2, the host computer can successfully receive the data sent by the MCU, which can also be confirmed from the waveform diagram (Figure 3-3).

MCU as Commander Transmitting Data Results Figure 3-2 MCU as Commander Transmitting Data Results
MCU as Commander Transmitting Data Waveform Figure 3-3 MCU as Commander Transmitting Data Waveform

When press the button2 to make MCU send 0x08(PID), the responder can send data to MCU. As shown from Figure 3-4, the responder transmit 0x11,0x22,0x33 and 0x44 and MCU succeeds to receive this data. But in this case, the check mode in PC is normal, so the checksum can not match the MCU and then the callback function can not work. However, the receive data can still be stored in the array.

MCU as Commander Receiving Data Results Figure 3-4 MCU as Commander Receiving Data Results
MCU as Commander Receiving Data Waveform Figure 3-5 MCU as Commander Receiving Data Waveform
gCommanderRXBuffer Results Figure 3-6 gCommanderRXBuffer Results