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| author | Bernhard Roth <br@pwrnet.de> | 2011-08-24 09:48:23 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-24 15:27:59 -0700 |
| commit | 83cac9f3b45ba8e99c5305be42c67f1c83adf0aa (patch) | |
| tree | b9b5ec2373ec4e113535cdbe50a09e601fa32ee9 /Documentation/serial/serial-rs485.txt | |
| parent | 019dc9ea8d528eb3640bbba604e1e5a2f6994b1f (diff) | |
| download | lwn-83cac9f3b45ba8e99c5305be42c67f1c83adf0aa.tar.gz lwn-83cac9f3b45ba8e99c5305be42c67f1c83adf0aa.zip | |
atmel_serial: RS485: receiving enabled when sending data
By default the atmel_serial driver in RS485 mode disables receiving data until
all data in the send buffer has been sent. This flag allows to receive data
even whilst sending data.
Signed-off-by: Bernhard Roth <br@pwrnet.de>
Signed-off-by: Claudio Scordino <claudio@evidence.eu.com>
Acked-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'Documentation/serial/serial-rs485.txt')
| -rw-r--r-- | Documentation/serial/serial-rs485.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/serial/serial-rs485.txt b/Documentation/serial/serial-rs485.txt index a4932387bbfb..c8878f821d1e 100644 --- a/Documentation/serial/serial-rs485.txt +++ b/Documentation/serial/serial-rs485.txt @@ -104,6 +104,9 @@ rs485conf.flags |= SER_RS485_RTS_AFTER_SEND; rs485conf.delay_rts_after_send = ...; + /* Set this flag if you want to receive data even whilst sending data */ + rs485conf.flags |= SER_RS485_RX_DURING_TX; + if (ioctl (fd, TIOCSRS485, &rs485conf) < 0) { /* Error handling. See errno. */ } |