STM8S datasheet(409/467 Pages) STMICROELECTRONICS

409 / 467 page

DocID14587 Rev 14

409/467

RM0016

Controller area network (beCAN)

427

23.11.9

CAN error status register (CAN_ESR)

Address offset: See Table 71.

Reset value: 0000 0000 (00h)

654

3210

Reserved

LEC[2:0]

Reserved

BOFF

EPVF

EWGF

rrrr

Bit 7

Reserved.

Bit 6:4 LEC[2:0] Last error code

This field holds a code which indicates the type of the last error detected on the CAN bus. If a

message has been transferred (reception or transmission) without error, this field will be cleared to

‘0’. The code 7 is unused and may be written by the CPU to check for update.

000: No Error

001: Stuff Error

010: Form Error

011: Acknowledgment Error

100: Bit recessive Error

101: Bit dominant Error

110: CRC Error

111: Set by software

Bit 3

Reserved.

Bit 2 BOFF Bus-off flag

This bit is set by hardware when it enters the bus-off state. The bus-off state is entered on

CAN_TECR overrun, TEC greater than 255, refer to Section 23.6.5 on page 396.

Bit 1 EPVF Error passive flag

This bit is set by hardware when the Error Passive limit has been reached (Receive Error Counter or

Transmit Error Counter greater than 127).

Bit 0 EWGF Error warning flag

This bit is set by hardware when the warning limit has been reached. Receive Error Counter or

Transmit Error Counter greater than 96.

STM8S 데이터시트(PDF) 409 Page - STMicroelectronics

STM8S 데이터시트(HTML) 409 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

데이터시트 다운로드

링크 URL