diff options
Diffstat (limited to 'readme.rst')
| -rw-r--r-- | readme.rst | 16 |
1 files changed, 15 insertions, 1 deletions
@@ -26,7 +26,7 @@ This driver is an effort to turn abundant ELM327 based OBD interfaces into full-fledged (as far as possible) CAN interfaces. Since the ELM327 was never meant to be a stand-alone CAN controller, -the driver has to switch between its modes asa quickly as possible in +the driver has to switch between its modes as quickly as possible in order to approximate full-duplex operation. As such, elmcan is a best-effort driver. However, this is more than @@ -308,9 +308,23 @@ Rationale behind the chosen configuration +A note on CAN bus termination +------------------------------ + +Your adapter may have resistors soldered in which are meant to terminate +the bus. This is correct when it is plugged into a OBD-II socket, but +not helpful when trying to tap into the middle of an existing CAN bus. + +If communications don't work with the adapter connected, check for the +termination resistors on its PCB and try removing them. + + + To Do list for future development ---------------------------------- - DMA capable rx/tx buffers + (is this relevant for this driver?) - flushing of ``tx_work`` is too late in ``ldisc_close()`` + (is this still the case?) |