Mercurial > nand-ecoscentric
changeset 3343:edcc78939bd0
* include/canio.h: Added structure cyg_can_err_count_info for reading
CAN hardware error counter values from CAN hardware.
* doc/can.sgml: Documented new CAN config key
CYG_IO_GET_CONFIG_ERR_COUNTERS.
| author | sergeig |
|---|---|
| date | Wed, 28 Aug 2013 16:28:10 +0000 |
| parents | 1e90246544b4 |
| children | 1053b0d2490c |
| files | packages/io/can/current/ChangeLog packages/io/can/current/doc/can.sgml packages/io/can/current/include/canio.h |
| diffstat | 3 files changed, 38 insertions(+), 0 deletions(-) [+] |
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--- a/packages/io/can/current/ChangeLog +++ b/packages/io/can/current/ChangeLog @@ -1,3 +1,10 @@ +2013-06-24 Uwe Kindler <uwe_kindler@web.de> + + * include/canio.h: Added structure cyg_can_err_count_info for reading + CAN hardware error counter values from CAN hardware. + * doc/can.sgml: Documented new CAN config key + CYG_IO_GET_CONFIG_ERR_COUNTERS. + 2013-05-06 Uwe Kindler <uwe_kindler@web.de> * doc/can.sgml: Documented return code -ENOSPC for cyg_io_set_config()
--- a/packages/io/can/current/doc/can.sgml +++ b/packages/io/can/current/doc/can.sgml @@ -664,6 +664,7 @@ CYG_IO_GET_CONFIG_CAN_MSGBUF_INFO CYG_IO_GET_CONFIG_CAN_TIMEOUT CYG_IO_GET_CONFIG_CAN_HDI CYG_IO_GET_CONFIG_CAN_STATE +CYG_IO_GET_CONFIG_CAN_ERR_COUNTERS </PROGRAMLISTING> </SECTION><!-- can-cyg-io-get-config --> @@ -1009,6 +1010,26 @@ present state of the CAN controller. Pos </PARA> </SECTION> <!-- can-read-hw-state --> +<SECTION> +<TITLE>Reading CAN hardware error counters</TITLE> + +<PROGRAMLISTING> +typedef struct cyg_can_err_count_info_st +{ + cyg_uint8 rx_err_count; + cyg_uint8 tx_err_count; +} cyg_can_err_count_info; +</PROGRAMLISTING> + +<PARA> +Each CAN node maintains two error counters: the Transmit Error Counter (TEC) +and the Receive Error Counter (REC). There are several rules governing how +these counters are incremented and/or decremented. +<varname>CYG_IO_GET_CONFIG_CAN_ERR_COUNTERS</varname> retrieves the present +value of both error counters (TEC and REC). +</PARA> +</SECTION> <!-- can-read-err-counters --> + <SECTION> <TITLE>Changing mode of CAN hardware</TITLE>
--- a/packages/io/can/current/include/canio.h +++ b/packages/io/can/current/include/canio.h @@ -283,6 +283,16 @@ typedef struct cyg_can_timeout_info_st // +// For reading error counter values from CAN controller +// +typedef struct cyg_can_err_count_info_st +{ + cyg_uint8 rx_err_count; + cyg_uint8 tx_err_count; +} cyg_can_err_count_info; + + +// // this data type defines a handle to a message buffer or message box // of the CAN hardware device //