MCAN_RXF1S

MCAN Receive FIFO 1 Status

  0xB4 32 Read-only 0x00000000  

MCAN Receive FIFO 1 Status

Bit  31 30 29 28 27 26 25 24  
  DMS[1:0]         RF1L F1F  
Access  R R         R R  
Reset  0 0         0 0  
Bit  23 22 21 20 19 18 17 16  
      F1PI[5:0]  
Access      R R R R R R  
Reset      0 0 0 0 0 0  
Bit  15 14 13 12 11 10 9 8  
      F1GI[5:0]  
Access      R R R R R R  
Reset      0 0 0 0 0 0  
Bit  7 6 5 4 3 2 1 0  
    F1FL[6:0]  
Access    R R R R R R R  
Reset    0 0 0 0 0 0 0  

Bits 6:0 – F1FL[6:0]: Receive FIFO 1 Fill Level

Receive FIFO 1 Fill Level

Number of elements stored in Receive FIFO 1, range 0 to 64.

Bits 13:8 – F1GI[5:0]: Receive FIFO 1 Get Index

Receive FIFO 1 Get Index

Receive FIFO 1 read index pointer, range 0 to 63.

Bits 21:16 – F1PI[5:0]: Receive FIFO 1 Put Index

Receive FIFO 1 Put Index

Receive FIFO 1 write index pointer, range 0 to 63.

Bit 24 – F1F: Receive FIFO 1 Full

Receive FIFO 1 Full

ValueDescription
0

Receive FIFO 1 not full.

1

Receive FIFO 1 full.

Bit 25 – RF1L: Receive FIFO 1 Message Lost

Receive FIFO 1 Message Lost

This bit is a copy of interrupt flag IR.RF1L. When IR.RF1L is reset, this bit is also reset.

Overwriting the oldest message when MCAN_RXF1C.F1OM = ‘1’ will not set this flag.

ValueDescription
0

No Receive FIFO 1 message lost.

1

Receive FIFO 1 message lost, also set after write attempt to Receive FIFO 1 of size zero.

Bits 31:30 – DMS[1:0]: Debug Message Status

Debug Message Status

ValueNameDescription
0 IDLE

Idle state, wait for reception of debug messages, DMA request is cleared.

1 MSG_A

Debug message A received.

2 MSG_AB

Debug messages A, B received.

3 MSG_ABC

Debug messages A, B, C received, DMA request is set.