2.10.1. Name¶
Shop undefined Flagstone Ashland Retaining Wall Block (Common: 4-in x 11-in; Actual: 4-in x 11.2-in) in the Retaining Wall Block department at Lowe's.com. Add charm to a backyard or garden with the flagstone retaining wall block, a do-it-yourself retaining wall product that offers a natural flagstone appearance.
Download Transmit 4.4.10 for Mac OS. Transmit offers a comprehensive FTP client for Mac OS X users. To transmit the documents of several corporations from the Client Manager, proceed as follows: Select the corporations for which you want to transmit documents. Tip: To display only corporations that have T2, CO-17 or AT1 returns with an 'Eligible' EFILE value status, use the 'EFILE Eligible' filter. In addition, if one of the returns selected.
CEC_RECEIVE, CEC_TRANSMIT - Receive or transmit a CEC message
2.10.2. Synopsis¶
- int
ioctl
(int fd, CEC_RECEIVE, struct cec_msg *argp)¶
- int
ioctl
(int fd, CEC_TRANSMIT, struct cec_msg *argp)¶
2.10.3. Arguments¶
![Transmit Transmit](https://image.pushauction.com/350/350/87d29c9f-51e8-451a-a090-0daf836c8616/c4b4b23b-f2a2-bbc4-0f3f-711e7837493b.jpg)
fd
- File descriptor returned by
open()
. argp
- Pointer to struct cec_msg.
2.10.4. Description¶
Transmit 4
To receive a CEC message the application has to fill in the
timeout
field of struct cec_msg
and pass it toioctl CEC_RECEIVE.If the file descriptor is in non-blocking mode and there are no receivedmessages pending, then it will return -1 and set errno to the EAGAIN
error code. If the file descriptor is in blocking mode and timeout
is non-zero and no message arrived within timeout
milliseconds, thenit will return -1 and set errno to the ETIMEDOUT
error code.A received message can be:
- a message received from another CEC device (the
sequence
field willbe 0). - the result of an earlier non-blocking transmit (the
sequence
field willbe non-zero).
To send a CEC message the application has to fill in the struct:c:type:` cec_msg` and pass it to ioctl CEC_TRANSMIT.The ioctl CEC_TRANSMIT is only available if
CEC_CAP_TRANSMIT
is set. If there is no more room in the transmitqueue, then it will return -1 and set errno to the EBUSY
error code.The transmit queue has enough room for 18 messages (about 1 second worthof 2-byte messages). Note that the CEC kernel framework will also replyto core messages (see :ref:cec-core-processing), so it is not a goodidea to fully fill up the transmit queue.Transmit 4 4 11 Esv
If the file descriptor is in non-blocking mode then the transmit willreturn 0 and the result of the transmit will be available viaioctl CEC_RECEIVE once the transmit has finished(including waiting for a reply, if requested).
The
sequence
field is filled in for every transmit and this can bechecked against the received messages to find the corresponding transmitresult.cec_msg
¶
__u64 | tx_ts | Timestamp in ns of when the last byte of the message was transmitted.The timestamp has been taken from the CLOCK_MONOTONIC clock. To accessthe same clock from userspace use clock_gettime() . |
__u64 | rx_ts | Timestamp in ns of when the last byte of the message was received.The timestamp has been taken from the CLOCK_MONOTONIC clock. To accessthe same clock from userspace use clock_gettime() . |
__u32 | len | The length of the message. For ioctl CEC_TRANSMIT this is filled inby the application. The driver will fill this in forioctl CEC_RECEIVE. For ioctl CEC_TRANSMIT it will befilled in by the driver with the length of the reply message if reply was set. |
__u32 | timeout | The timeout in milliseconds. This is the time the device will waitfor a message to be received before timing out. If it is set to 0,then it will wait indefinitely when it is called by ioctl CEC_RECEIVE.If it is 0 and it is called by ioctl CEC_TRANSMIT,then it will be replaced by 1000 if the reply is non-zero orignored if reply is 0. |
__u32 | sequence | A non-zero sequence number is automatically assigned by the CEC frameworkfor all transmitted messages. It is used by the CEC framework when it queuesthe transmit result (when transmit was called in non-blocking mode). Thisallows the application to associate the received message with the originaltransmit. |
__u32 | flags | Flags. See Flags for struct cec_msg for a list of available flags. |
__u8 | tx_status | The status bits of the transmitted message. SeeCEC Transmit Status for the possible status values. It is 0 ifthis messages was received, not transmitted. |
__u8 | msg[16] | The message payload. For ioctl CEC_TRANSMIT this is filled in by theapplication. The driver will fill this in for ioctl CEC_RECEIVE.For ioctl CEC_TRANSMIT it will be filled in by the driver withthe payload of the reply message if timeout was set. |
__u8 | reply | Wait until this message is replied. If reply is 0 and thetimeout is 0, then don’t wait for a reply but return aftertransmitting the message. Ignored by ioctl CEC_RECEIVE.The case where reply is 0 (this is the opcode for the Feature Abortmessage) and timeout is non-zero is specifically allowed to make itpossible to send a message and wait up to timeout milliseconds for aFeature Abort reply. In this case rx_status will either be setto CEC_RX_STATUS_TIMEOUT orCEC_RX_STATUS_FEATURE_ABORT.If the transmitter message is CEC_MSG_INITIATE_ARC then the reply values CEC_MSG_REPORT_ARC_INITIATED and CEC_MSG_REPORT_ARC_TERMINATED are processed differently: either value will match both possible replies.The reason is that the CEC_MSG_INITIATE_ARC message is the only CECmessage that has two possible replies other than Feature Abort. Thereply Aweeraser 3 7. field will be updated with the actual reply so that it issynchronized with the contents of the received message. |
__u8 | rx_status | The status bits of the received message. SeeCEC Receive Status for the possible status values. It is 0 ifthis message was transmitted, not received, unless this is thereply to a transmitted message. In that case both rx_status and tx_status are set. |
__u8 | tx_status | The status bits of the transmitted message. SeeCEC Transmit Status for the possible status values. It is 0 ifthis messages was received, not transmitted. |
__u8 | tx_arb_lost_cnt | A counter of the number of transmit attempts that resulted in theArbitration Lost error. This is only set if the hardware supportsthis, otherwise it is always 0. This counter is only valid if theCEC_TX_STATUS_ARB_LOST status bit is set. |
__u8 | tx_nack_cnt | A counter of the number of transmit attempts that resulted in theNot Acknowledged error. This is only set if the hardware supportsthis, otherwise it is always 0. This counter is only valid if theCEC_TX_STATUS_NACK status bit is set. |
__u8 | tx_low_drive_cnt | A counter of the number of transmit attempts that resulted in theArbitration Lost error. This is only set if the hardware supportsthis, otherwise it is always 0. This counter is only valid if theCEC_TX_STATUS_LOW_DRIVE status bit is set. |
__u8 | tx_error_cnt | A counter of the number of transmit errors other than ArbitrationLost or Not Acknowledged. This is only set if the hardwaresupports this, otherwise it is always 0. This counter is onlyvalid if the CEC_TX_STATUS_ERROR status bit is set. |
CEC_MSG_FL_REPLY_TO_FOLLOWERS | 1 | If a CEC transmit expects a reply, then by default that reply is only sent tothe filehandle that called ioctl CEC_TRANSMIT. If thisflag is set, then the reply is also sent to all followers, if any. If thefilehandle that called ioctl CEC_TRANSMIT is also afollower, then that filehandle will receive the reply twice: once as theresult of the ioctl CEC_TRANSMIT, and once viaioctl CEC_RECEIVE. |
CEC_TX_STATUS_OK | 0x01 | The message was transmitted successfully. This is mutuallyexclusive with CEC_TX_STATUS_MAX_RETRIES. Other bits can stillbe set if earlier attempts met with failure before the transmitwas eventually successful. |
CEC_TX_STATUS_ARB_LOST | 0x02 | CEC line arbitration was lost. |
CEC_TX_STATUS_NACK | 0x04 | Message was not acknowledged. |
CEC_TX_STATUS_LOW_DRIVE | 0x08 | Low drive was detected on the CEC bus. This indicates that afollower detected an error on the bus and requests aretransmission. |
CEC_TX_STATUS_ERROR | 0x10 | Some error occurred. This is used for any errors that do not fitthe previous two, either because the hardware could not tell whicherror occurred, or because the hardware tested for otherconditions besides those two. |
CEC_TX_STATUS_MAX_RETRIES | 0x20 | The transmit failed after one or more retries. This status bit ismutually exclusive with CEC_TX_STATUS_OK. Other bits can stillbe set to explain which failures were seen. |
![Transmit 4 4 11 Transmit 4 4 11](https://i2.wp.com/macsources.com/wp-content/uploads/2014/05/featured-Transmit.png?fit=640%2C480&ssl=1)
CEC_RX_STATUS_OK | 0x01 | The message was received successfully. |
CEC_RX_STATUS_TIMEOUT | 0x02 | The reply to an earlier transmitted message timed out. |
CEC_RX_STATUS_FEATURE_ABORT | 0x04 | The message was received successfully but the reply was CEC_MSG_FEATURE_ABORT . This status is only set if this messagewas the reply to an earlier transmitted message. |
2.10.5. Return Value¶
On success 0 is returned, on error -1 and the
errno
variable is setappropriately. The generic error codes are described at theGeneric Error Codes chapter.So, you have files you need to manage on servers. Maybe you’re a developer. Maybe you’re a system administrator. Maybe you’re a contractor or freelancer. But you need to connect to a thing, and upload, download, or tweak the files on that thing.
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