LIN bus and EUSART

[Fabri]

Hi Everybody,

I'm writing a code for LIN bus master mode.

As reported in datasheet of PIC16F690 there is a possibiliti to send a break sequence automatically setting TXEN and SENDB bits in TXSTA register.

is this mode supported by CCS ?

Shall I change the TXSTA bit manually in second time ?

Have you got any suggest about ?

Thanks for help,

[ploana]

Hi

you will need EUSART only for slave mode.
If you use the CCS Comiler and you use #rs232() you will have bi problems by changing the pins manually.
For master Mode by LIN-Bus:
putc(0x0F) with UART-speed of 20000kBit/s 250µs-5ms(Wake up)

delay_ms(130) wait 100-150ms

and then you can begin with your Header frame:
//sync Break
set_uart_speed( 13000 );
putc(0x00);

//sync Field
set_uart_speed( 19200 );
putc(0x55);

then you can send your protected identifier with putc( ... ); ...

[Fabri]

Hi ploana,

At the moment project with LIN BUS stopped.

Thanks for help anyway.

Regards,
Fabri