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

2.3.1 LIN Commander

The main function of LIN commander demo code is to send different command in LIN protocol frame. As the two bottoms are pressed, PID 0x39 and 0x08 are sent desperately. One is to light LED of responder and the other one is to receive data from responder.

Figure 2-1 shows the flow process of LIN commander demo code.

Flow Process of LIN Commander Demo Code Figure 2-1 Flow Process of LIN Commander Demo Code

To initialize the hardware, TI System Configuration Tool (SysConfig) is used to generate configuration code of UART, such as UART clock, pin configuration and so on. In this demo code, we choose 19200 Baud Rate, following the LIN specs regulation.

Table 2-3 shows a summary for the LIN commander project, which includes the main used definitions and functions.

Table 2-3 LIN Commander Project Main Content
Name Task Description Location
LIN_TABLE_INDEX_PID_xx definition The PID of each frame lin_command.c
LIN_MESSAGE_NOT_FOUND definition 0xFF. UART LIN value for the message not found lin_config.h
LIN_SYNC_BYTE definition 0x55. UART LIN value for the sync byte lin_config.h
LIN_BREAK_LENGTH definition 0x08. UART LIN break length to 1ms lin_config.h
SYSCFG_DL_init() function Initialize the peripherals, generated by Sysconfig ti_msp_dl_config.c
DL_UART_enableLINSendBreak(UART_Regs *uart) function Enable send break. when enabled, a low level is continually output on the TXD signal after completing transmission of the current character dl_uart.c
DL_UART_disableLINSendBreak(UART_Regs *uart) function Disable send break dl_uart.c
LIN_Commander_transmitMessage(UART_Regs *uart, uint8_t tableIndex, uint8_t *buffer, LIN_table_record_t *messageTable) function LIN transmits message lin_config.c
LIN_processMessage_Rx() function Process as message received Lin_commander.c