sergiotarxz/nuttx
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Update some comments

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This commit is contained in:
Gregory Nutt 2016-01-18 16:27:46 -06:00
parent da33ec6b2e
commit e73ccd6638
1 changed files with 60 additions and 56 deletions
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54
include/nuttx/can.h
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@ -208,17 +208,18 @@
/* CAN Error Indications ************************************************************/
#ifdef CONFIG_CAN_ERRORS
/* Bit settings in the ch_error field of the CAN error message */
/* Bit settings in the ch_id field of the CAN error message (when ch_error is set) */
# define CAN_ERROR_TXTIMEOUT (1 << 0) /* TX timeout */
# define CAN_ERROR_LOSTARB (1 << 1) /* Lost arbitration (See CAN_ERROR0_* definitions) */
# define CAN_ERROR_CONTROLLER (1 << 2) /* Controller error (See CAN_ERROR1_* definitions) */
# define CAN_ERROR_PROTOCOL (1 << 3) /* Protocol error (see CAN_ERROR1_* and CAN_ERROR3_* definitions) */
# define CAN_ERROR_TRANSCEIVER (1 << 4) /* Transceiver error (See CAN_ERROR4_* definitions) */
# define CAN_ERROR_NOACK (1 << 5) /* No ACK received on transmission */
# define CAN_ERROR_BUSOFF (1 << 6) /* Bus off */
# define CAN_ERROR_BUSERROR (1 << 7) /* Bus error */
# define CAN_ERROR_RESTARTED (1 << 8) /* Controller restarted */
# define CAN_ERROR_TXTIMEOUT (1 << 0) /* Bit 0: TX timeout */
# define CAN_ERROR_LOSTARB (1 << 1) /* Bit 1: Lost arbitration (See CAN_ERROR0_* definitions) */
# define CAN_ERROR_CONTROLLER (1 << 2) /* Bit 2: Controller error (See CAN_ERROR1_* definitions) */
# define CAN_ERROR_PROTOCOL (1 << 3) /* Bit 3: Protocol error (see CAN_ERROR1_* and CAN_ERROR3_* definitions) */
# define CAN_ERROR_TRANSCEIVER (1 << 4) /* Bit 4: Transceiver error (See CAN_ERROR4_* definitions) */
# define CAN_ERROR_NOACK (1 << 5) /* Bit 5: No ACK received on transmission */
# define CAN_ERROR_BUSOFF (1 << 6) /* Bit 6: Bus off */
# define CAN_ERROR_BUSERROR (1 << 7) /* Bit 7: Bus error */
# define CAN_ERROR_RESTARTED (1 << 8) /* Bit 8: Controller restarted */
/* Bits 9-10: Available */
/* The remaining definitions described the error report payload that follows the
* CAN header.
@ -234,24 +235,25 @@
/* Data[1]: Error status of CAN-controller */
# define CAN_ERROR1_UNSPEC 0x00 /* Unspecified error */
# define CAN_ERROR1_RXOVERFLOW (1 << 0) /* RX buffer overflow */
# define CAN_ERROR1_TXOVERFLOW (1 << 1) /* TX buffer overflow */
# define CAN_ERROR1_RXWARNING (1 << 2) /* Reached warning level for RX errors */
# define CAN_ERROR1_TXWARNING (1 << 3) /* Reached warning level for TX errors */
# define CAN_ERROR1_RXPASSIVE (1 << 4) /* Reached passive level for RX errors */
# define CAN_ERROR1_TXPASSIVE (1 << 5) /* Reached passive level for TX errors */
# define CAN_ERROR1_RXOVERFLOW (1 << 0) /* Bit 0: RX buffer overflow */
# define CAN_ERROR1_TXOVERFLOW (1 << 1) /* Bit 1: TX buffer overflow */
# define CAN_ERROR1_RXWARNING (1 << 2) /* Bit 2: Reached warning level for RX errors */
# define CAN_ERROR1_TXWARNING (1 << 3) /* Bit 3: Reached warning level for TX errors */
# define CAN_ERROR1_RXPASSIVE (1 << 4) /* Bit 4: Reached passive level for RX errors */
# define CAN_ERROR1_TXPASSIVE (1 << 5) /* Bit 5: Reached passive level for TX errors */
/* Bits 6-7: Available */
/* Data[2]: Error in CAN protocol. This provides the type of the error. */
# define CAN_ERROR2_UNSPEC 0x00 /* Unspecified error */
# define CAN_ERROR2_BIT (1 << 0) /* Single bit error */
# define CAN_ERROR2_FORM (1 << 1) /* Frame format error */
# define CAN_ERROR2_STUFF (1 << 2) /* Bit stuffing error */
# define CAN_ERROR2_BIT0 (1 << 3) /* Unable to send dominant bit */
# define CAN_ERROR2_BIT1 (1 << 4) /* Unable to send recessive bit */
# define CAN_ERROR2_OVERLOAD (1 << 5) /* Bus overload */
# define CAN_ERROR2_ACTIVE (1 << 6) /* Active error announcement */
# define CAN_ERROR2_TX (1 << 7) /* Error occured on transmission */
# define CAN_ERROR2_BIT (1 << 0) /* Bit 0: Single bit error */
# define CAN_ERROR2_FORM (1 << 1) /* Bit 1: Frame format error */
# define CAN_ERROR2_STUFF (1 << 2) /* Bit 2: Bit stuffing error */
# define CAN_ERROR2_BIT0 (1 << 3) /* Bit 3: Unable to send dominant bit */
# define CAN_ERROR2_BIT1 (1 << 4) /* Bit 4: Unable to send recessive bit */
# define CAN_ERROR2_OVERLOAD (1 << 5) /* Bit 5: Bus overload */
# define CAN_ERROR2_ACTIVE (1 << 6) /* Bit 6: Active error announcement */
# define CAN_ERROR2_TX (1 << 7) /* Bit 7: Error occured on transmission */
/* Data[3]: Error in CAN protocol. This provides the loation of the error. */
@ -276,15 +278,17 @@
# define CAN_ERROR3_EOF 0x12 /* End of frame */
# define CAN_ERROR3_INTERM 0x13 /* Intermission */
/* error status of CAN-transceiver / data[4] */
/* Data[4]: Error status of CAN-transceiver */
# define CAN_ERROR4_UNSPEC 0x00
# define CANH_ERROR4_MASK 0x0f /* Bits 0-3: CANH */
# define CANH_ERROR4_NOWIRE 0x01
# define CANH_ERROR4_SHORT2BAT 0x02
# define CANH_ERROR4_SHORT2VCC 0x03
# define CANH_ERROR4_SHORT2GND 0x04
# define CANL_ERROR4_MASK 0xf0 /* Bits 0-3: CANL */
# define CANL_ERROR4_NOWIRE 0x10
# define CANL_ERROR4_SHORT2BAT 0x20
# define CANL_ERROR4_SHORT2VCC 0x30