fs23 Lin mode swith question

gumu — Wed, 13 Nov 2024 12:13:48 GMT

Hello,

We encountered a question while debugging the FS LIN functionality. Specifically, we found that in debug mode, we cannot set the LINTRCV_FS23_TRCVMODE_OFF mode using the LinTrcv_fs23_SetMode() function.

The code snippet is as follows:

Std_ReturnType LinTrcv_fs23_SetMode(uint8 u8LinNetwork, LinTrcv_fs23_TrcvModeType eOpMode) { uint16 u16RegData = 0U; Std_ReturnType eStatus; LinTrcv_fs23_TrcvModeType eNewHwOpMode = LINTRCV_FS23_TRCVMODE_INVALID; /* Read M_LIN register. */ eStatus = Sbc_fs23_ReadRegister(SBC_FS23_M_LIN_ADDR, &u16RegData); if ((Std_ReturnType)E_OK == eStatus) { /* Set new register value. */ u16RegData &= ~(SBC_FS23_M_LIN_MODE_MASK | SBC_FS23_M_LIN_SLOPE_MASK| SBC_FS23_M_LIN_FS_DIS_MASK); if(TRUE == xG_drivers[u8LinNetwork].bLinSlowSlope) { u16RegData |= SBC_FS23_M_LIN_SLOPE_SLOW; } if(FALSE == xG_drivers[u8LinNetwork].bLinFailsafeDisable) { u16RegData |= SBC_FS23_M_LIN_FS_DIS_KEEP; } u16RegData |= ((uint16)eOpMode << SBC_FS23_M_LIN_MODE_SHIFT); eStatus = Sbc_fs23_WriteRegister(SBC_FS23_M_LIN_ADDR, u16RegData); .... /*Check the real hardware state*/ eStatus |= LinTrcv_fs23_GetMode(u8LinNetwork, &eNewHwOpMode); if((eNewHwOpMode == eOpMode) && ((Std_ReturnType)E_OK == eStatus)) { eStatus = (Std_ReturnType)E_OK; } else { eStatus = (Std_ReturnType)E_NOT_OK; } } return eStatus; }

The eOpMode is LINTRCV_FS23_TRCVMODE_OFF, the eNewHwOpMode is LINTRCV_FS23_TRCVMODE_NORMAL.

The manual states that in debug mode, LIN defaults to active mode. Is this behavior normal?

Thanks!

Re: fs23 Lin mode swith question

TomasVaverka — Wed, 13 Nov 2024 13:25:58 GMT

Hi Quang (@quangvuanh),

Could you please help with this question from Anhui Zhitu Technology China?

Thanks & BRs, Tomas

Re: fs23 Lin mode swith question

quangvuanh — Thu, 14 Nov 2024 09:54:30 GMT

Hi, I have to check with hardware team. Can you please let me know what version of FS23 that you have? Or what is the part number?

Re: fs23 Lin mode swith question

quangvuanh — Thu, 14 Nov 2024 10:07:23 GMT

Hi @gumu , I got confirmation from hardware team that it's a normal behaviour. In debug mode, the transceiver mode is forced ACTIVE. So even if you try and change the LIN_MODE field to OFFLINE (OFF, 2b00) then the transceiver stays in active mode.

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