Can't get the signal using the LIN stack

guofeng — Mon, 08 Jan 2018 09:21:07 GMT

Hi,

I am using the FSL_LIN_2.x_STACK_Package_4.5.9 in S12VR64 MCU.

I test the examples (\FSL_LIN_2.x_STACK_Package_4.5.9\Examples\VR64_MagniV), and I change the code as following:

***************************************************************************************************************

// these code could be found in the VR64_Master_LIN21 project
   for(;;) {
        // if (l_flg_tst_LI0_Motor1Temp_flag()){
        // /* Clear this flag... */
        // l_flg_clr_LI0_Motor1Temp_flag();
        // /* Store temperature data */
        // Motor1_temp = l_u8_rd_LI0_Motor1Temp();
        // /* The application will change Motor selection in case
           // the temperature is greater than maximum value to release motor power */
        // if (MOTOR1_OVER_TEMP<Motor1_temp) {
          // /* Request stop motor by power off */
           // l_u8_wr_LI0_Motor1Selection(MOTOR_SELECTION_STOP);
        // } else if ((MOTOR1_MAX_TEMP<Motor1_temp)&(MOTOR1_OVER_TEMP > Motor1_temp)){
          // /* Request to reduce motor speed */
          // l_u8_wr_LI0_Motor1Selection(MOTOR_SELECTION_DECREASE);
        // } else {
          // /* Request to increase motor speed if user request */
          // l_u8_wr_LI0_Motor1Selection(MOTOR_SELECTION_INCREASE);
        // }
      //}
    Motor1_temp = l_u8_rd_LI0_Motor1Temp();

    if (Motor1_temp>MOTOR1_MAX_TEMP)
    {
      flag = 0;
    }
    else if (Motor1_temp<MOTOR1_MIN_TEMP)
    {
      flag = 1;
    }

    if(flag)
    {
      l_u8_wr_LI0_Motor1Selection(MOTOR_SELECTION_INCREASE);
    }
    else
    {
      l_u8_wr_LI0_Motor1Selection(MOTOR_SELECTION_DECREASE);
    }
}

******************************************************************************************************************

//then, in the VR64_slave_LIN21 project, the "l_flg_tst_LI0_Motor1Selection_flag()" is always false.

    for(;;) {
        /* Check if temp signal is updated */
      if (l_flg_tst_LI0_Motor1Selection_flag()){
          /* Clear this flag... */
          l_flg_clr_LI0_Motor1Selection_flag();
          /* Store selection data */
          Motor1_Selection = l_u8_rd_LI0_Motor1Selection();
          /* The application will change Motor selection in case
           the temperature is greater than maximum value to release motor power
           This will be transfered by sporadic frame type in LIN bus */
         l_u8_wr_LI0_Motor1Temp(Motor1_temp);
         /* Check if power off motor due to high temperature */
         if (Motor1_Selection == MOTOR_SELECTION_STOP) {
         /*---------- add code here to stop motor ------------*/

}

**************************************************************************************************************************

I didn't change the configuration in projects

Re: Can't get the signal using the LIN stack

danielmartynek — Tue, 09 Jan 2018 12:56:13 GMT

Hi,

I'm unable to debug your code right now.

If I were you I would modify the the code step by step and check LIN bus communication.

Regards,

Daniel

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