Flexray Interrupts

Sindhu,

It looks like your question is regarding the names in the HalCoGen VIM tabs.

These don't match exactly with the TRM / Datasheet names so I can understand the difficulty you are having.

You can match up the channel # between HalCoGen and the table 5.15.3 Interrupt Request Assignments of the device datasheet -- for example "FlexRay high" HalCoGen name defaults to channel 18. In Table 5.15.3 this channel 18 is called "Flexray level 0 interrupt".

In theory you could match these names up to the names in the flexray chapter of SPNU563 but I don't have any luck with this. So we'll need to research this further.

Hi Sindhu,

As Seely said, the HalCoGen uses HighLevel (or LowLevel) in the ISR name for the Level 0 interrupt (level 1 interrupt) defined in the datasheet. In Datasheet VIM request tables, there are 5 interrupt channels for FlexRay.

• 18 -- FlexRay level 0 interrupt
• 32 -- FlexRay level 1 interrupt
• 48 -- FlexRay TU Transfer Status interrupt
• 58 -- FlexRay TU Error interrupt
• 52 -- FlexRay T0C interrupt
• 62 -- FlexRay T1C interrupt

The FTU (FlexRay Transfer Unit) has an internal intelligent state-machine to transfer data between the Input and Output Buffer Interfaces of the FlexRay core module and the system memory of the microcontroller without CPU interaction. It operates in a similar manner to a DMA module. The FTU transfer interrupts are enabled by writing 1 to TSMIES and TCCIES registers, and FTU error interrupts are enabled by writing 1 to TEIRES register. The status flags are in TSMO, TCCO, and TEIF.

RTI module in Hercules MCU provides a mechanism to sync the OS to the flexray communication cycle. RTI counter block 0 can be clocked in addition by either the flexray macrotick (NTU0) or the flexray start of cycle (NTU1).

Regards,

QJ

Thanks Seely and QJ ! The Answers are of great help.