MPC5744p S32DS LINBUS master slave example

[akovacevic]

Hello everyone,

Could someone help me with information about whether there is an MPC5744p LINBUS Master/Slave example for S32 Design Studio?

Thank you!

[PetrS]

Hi,

there are LIN master and slave examples within S32DS, so you can refer to it.

BR, Petr

[akovacevic]

What is the best approach here to use the SDK and LIN bus? I tried generating a LIN message with linflexd_uart, but generating that break and wakeup isn't possible. Should I use TX as a digital output?

[PetrS]

Hi,

as far as I know there's no LIN support in the SDK and there are no plans to add it.

BR, Petr

[akovacevic]

My idea is to stay in the SDK environment, which is now, in your opinion, the best way to enable LIN hardware? Or is there maybe a way to create software via PIT and GPIO?

[PetrS]

Hi,

you can stay with SDK and LINFlex module, but you need to write code/driver yourself, for example reusing available baremetal code. 

BR, Petr

[akovacevic]

here is a way that works and simulates a wakeup signal

#define SYNC 0x55

#define WAKEUP = 0x00;

   ....

    LINFLEXD_UART_DRV_SetBaudRate(INST_LINFLEXD_UART1,4800);

    LINFLEXD_UART_DRV_SendDataBlocking(INST_LINFLEXD_UART1, &WAKEUP, 1,100);

    LINFLEXD_UART_DRV_SetBaudRate(INST_LINFLEXD_UART1,9600);

    masterMessage.sync = SYNC;

    masterMessage.id = PID;

    masterMessage.data[0] = 0x00;

    masterMessage.data[1] = 0x00;

    masterMessage.chksum = linbus_calculate_checksum(masterMessage.data,2);

[akovacevic]

Thank you for quick replay, is it possible to integrate a part of the example (initialization and sending a LIN message) with, let's say, a FreeRTOS example from the SDK package without any major issues?