TWI461922B - System and method for master/slaver full duplex serial transmission - Google Patents

Description

Master-slave full-duplex sequence transmission system and master-slave full-duplex sequence transmission method

The invention relates to a master-slave full-duplex sequence transmission method and a master-slave full-duplex sequence transmission system.

Please refer to FIG. 1 , which is a schematic diagram showing a conventional master-slave full-duplex sequence transmission system. The conventional master-slave full-duplex sequence transmission system 1 includes a master-slave-in/out-slot row 11, a master-slave-outlet busbar 12, a master device 13, and slave devices 14(1) to 14(N), where N is a positive integer. . The master device 13 transmits the data packet from the inbound and outbound bank 11 to the slave devices 14(1) to 14(N) via the master and out, and receives the slave devices 14(1) to 14(N) through the master in and out of the bus bar 12 The data packet sent out.

Please refer to FIG. 2, FIG. 3 and FIG. 4 at the same time. FIG. 2 is a schematic diagram showing that the first data packet is sent by the main control device, and FIG. 3 is a second data packet sent by the main control device. The schematic diagram of the fourth figure shows a schematic diagram of sending the third data packet to the main control device. For convenience of explanation, FIGS. 2 to 4 are illustrated by taking N equal to 3. As shown in Fig. 2, the main control unit 13 sends the first data to the slave devices 14(1) to 14(3) via the master/outlet from the bus bar 11, and the first data includes the data packets A1 to A3. As shown in Fig. 3, the master device 13 sends the second data to the slave devices 14(1) to 14(3) via the master/slave input/sending bank 11, and the second data includes the data packets B1 to B3. As shown in FIG. 4, the main control device 13 receives the data packets A1 to A3 from the output bus 12 via the main input, and sends the third data to the slave devices 14(1) to 14 via the main output from the incoming bus bar 11 ( 3) The third data includes data packets C1 to C3.

Please refer to FIG. 2 and FIG. 5 at the same time. FIG. 5 is a schematic diagram showing the transmission and reception of data packets by the main control device. The main control device 13 sequentially sends out the data packets A1 to A3, the data packets B1 to B3, the data packets C1 to C3, and the data packets D1 to D3 through the main inbound and outbound bus bars 11, and sequentially enters and exits the secondary and outgoing streams. Row 12 receives data packets A1 to A3, data packets B1 to B3, data packets C1 to C3, and data packets D1 to D3.

It can be seen that in the traditional master-slave full-duplex sequence transmission system, the master device dominates the data transmission and reception of the slave device. The master device can receive the data packet responded by the slave device by continuously sending the data packet to the slave device.

The invention relates to a master-slave full-duplex sequence transmission method and a master-slave full-duplex sequence transmission system.

According to the present invention, a master-slave full-duplex sequence transmission method is proposed. The master-slave full-duplex sequence transmission method is used for a master-slave full-duplex sequence transmission system, and the master-slave full-duplex sequence transmission system includes a master-slave-in-sink-in stream, a master-in-out-out-slave stream, a slave device, and Master control unit. The master-slave full-duplex sequence transmission method includes: the master device polls the slave device to generate a sort record; the master device broadcasts the sort record through the master-slave slave bus; the slave device records the sort record; the slave device monitors the master-in and out-out The packet transmission status on the bus; and the slave device successively transmits the data packet to the main control device according to the packet transmission status and the sorting record.

According to the present invention, a master-slave full-duplex sequence transmission system is proposed. The master-slave full-duplex sequence transmission system includes a master-slave-in-sink-and-slave stream, a master-in-slave-slave stream, a slave device, and a master device. Each slave device includes a unidirectional buffer and a bidirectional buffer. The unidirectional buffer is coupled to the main slave slave bus, and the bidirectional buffer is coupled to the master slave slave bus. The master device polls the slave device to generate a sort record, and broadcasts the sort record through the master-slave slave bus, the slave device records the sort record, and each slave device monitors the packet transfer status of the master-in-out-out-side bus bar via the bidirectional buffer. And continuously transmitting the data packet to the main control device according to the packet transmission status and the sorting record.

In order to better understand the above and other aspects of the present invention, the preferred embodiments are described below, and in conjunction with the drawings, the detailed description is as follows:

The following embodiments disclose a master-slave full-duplex sequence transmission method and a master-slave full-duplex sequence transmission system. The master-slave full-duplex sequence transmission method is used for a master-slave full-duplex sequence transmission system, and the master-slave full-duplex sequence transmission system includes a master-slave-in-sink-in stream, a master-in-out-out-slave stream, a slave device, and Master control unit. The master-slave full-duplex sequence transmission method includes: polling the slave device to generate a sort record; broadcasting the sort record through the master-slave-in-stream bus; the slave device records the sort record; the slave device monitors the packet transmission of the master-in-out-out-side bus Status; and the slave device successively transmits the data packet to the master device according to the packet transmission status and the sort record.

The master-slave full-duplex sequence transmission system includes a master-slave-in-sink-and-slave stream, a master-in-slave-slave stream, a slave device, and a master device. Each slave device includes a unidirectional buffer and a bidirectional buffer. The unidirectional buffer is coupled to the main slave slave bus, and the bidirectional buffer is coupled to the master slave slave bus. The master device polls the slave device to generate a sort record, and broadcasts the sort record through the master-slave slave bus, the slave device records the sort record, and each slave device monitors the packet transfer status of the master-in-out-out-side bus bar via the bidirectional buffer. And continuously transmitting the data packet to the main control device according to the packet transmission status and the sorting record.

Please refer to FIG. 6 , FIG. 7 , FIG. 8 and FIG. 9 simultaneously. FIG. 6 is a schematic diagram showing a master-slave full-duplex sequence transmission system according to an embodiment, and FIG. 7 is a diagram showing a slave. A schematic diagram of the device, FIG. 8 is a flow chart showing a method for transmitting a master-slave full-duplex sequence, and FIG. 9 is a schematic diagram showing a packet format of a master-slave full-duplex sequence transmission system. The master-slave full-duplex sequence transmission system 6 includes a master-slave-in/out-slot-slot 61, a master-slave-outlet busbar 62, a master device 63, and slave devices 64(1)-64(N), where N is a positive integer. The slave devices 64(1) to 64(N) are ordered from the beginning to the end of the sort. Each of the slave devices 64(1) to 64(N) includes a drive circuit 71 and a control circuit 72, and the control circuit 72 controls the drive circuit 71. The drive circuit 71 further includes a transmission interface 711, a unidirectional buffer 712, and a bidirectional buffer 713. The unidirectional buffer 712 is coupled to the main ejector slave bus 61, and the bidirectional buffer 713 is coupled to the master NAND slave bus 62. The slave devices 64(1) to 64(N) can monitor the packet transfer state of the master-in/out-out bus bar 62 via the bidirectional buffer 713.

The packet format of the master-slave full-duplex sequence transmission system 6 includes a address field 91, a packet class field 92, a data/command code field 93, and an error check code field 94. The address field 91 is used to record the destination address of the packet, and the packet category field 92 is used to record the type of the packet, such as a data packet or a command packet. The data/command code field 93 is used to record the data of the data packet or the command code of the command packet. The command code, for example, indicates that the command packet is used to initialize the slave device, initiate the sort record, or note the slave device at the end of the sort. The error check code field 94 is used to record an error check code, such as a Cyclic Redundancy Check (CRC) code.

The master-slave full-duplex sequence transmission method can be applied to the aforementioned master-slave full-duplex sequence transmission system 6, and includes at least steps 81 to 85. As shown in step 81, the master device 63 polls the slave devices 64(1)-64(N) to generate a sort record. The master device 63 sequentially issues command packets for initialization to poll the slave devices 64(1) to 64(N), so that step 81 can be regarded as the master device 63 initializing the slave devices 64(1)-64. (N). Further, the master device 63 polls the slave devices 64(1) to 64(N) to record the number and position of the slave devices 64(1) to 64(N), and the master device 63 is based on the slave device 64 (1). The number of ~64(N) and location plan the order of transmission between the slave devices 64(1)-64(N) to generate a sort record. In addition, the master device 63 is more capable of notating the slave device 64(N) at the end of the sorting. As shown in step 82, the master device 63 broadcasts the sorted record via the master-out slave-in bus bar 61. As shown in step 83, the slave devices 64(1) to 64(N) record the sort record. As shown in step 84, slave devices 64(1)-64(N) listen to the packet transfer status of the master-in/out-out busbar 62. As shown in step 85, the slave devices 64(1) to 64(N) successively transmit the data packet to the master device 63 based on the packet transfer status and the sort record.

For example, when the master device 63 broadcasts a command packet for starting a scheduled recording via the master-out slave bus 61, the slave device 64 (i+1) sorted as i+1 monitors the master-in and out-out. After the packet transmission status on the bus 62 is completed and the data packet of the slave device 64(i) sorted as i is completed, the data packet is successively transmitted. Where i is a positive integer less than N. The sorting first slave device 64(1) monitors the packet transfer status of the master incoming and outgoing slave bus 62 and transmits the data packet after the slave device 64(N) transmits the data packet. When the i-th slave device does not transmit the packet to the master device 63 within a waiting time, the sort record of the i-th slave device is removed, and the i+1th slave device successively transmits the data packet.

Please refer to FIG. 10 to FIG. 13 at the same time. FIG. 10 is a schematic diagram showing that the first command packet for initializing is sent to the main control device, and FIG. 11 is the second one for the main control device. Schematic diagram of the initializing the command packet, FIG. 12 is a schematic diagram showing the third command packet for initializing the device to be initialized, and FIG. 13 is a diagram showing the fourth to 32th of the main control device for initializing. Schematic diagram of the command packet. For convenience of explanation, the slave devices in the following diagrams are described by taking the slave devices 64(1) to 64(3) as an example, but the number of slave devices can be flexibly adjusted according to their actual use. As shown in Fig. 10, the master device 63 broadcasts the command packet E1 for initialization via the master-out slave bus 61. The slave device 64(1) transmits the command packet E1 to the master device 63 via the master inbound and outbound busbars 62 after receiving the command packet E1 from the incoming bus bar 61 via the master. The master device 63 receives the order R1 of the slave device 64(1) after receiving the command packet E1 transmitted by the slave device 64(1), and adds the sort R1 to the sort record R, at which time the sort record R = [R1].

Next, as shown in Fig. 11, the master device 63 broadcasts the command packet E2 for initialization via the master-out slave bus 61. The slave device 64(2) transmits the command packet E2 to the master device 63 via the master inbound and outbound busbars 62 after receiving the command packet E2 from the incoming bus bar 61 via the master. The master device 63 receives the sequence R2 of the slave device 64(2) after receiving the command packet E2 transmitted by the slave device 64(2), and adds the sort R2 to the sort record R, at which time the sort record R=[R1 R2] .

Next, as shown in Fig. 12, the master device 63 broadcasts the command packet E3 for initialization via the master-out slave bus 61. The slave device 64(3) transmits the command packet E3 to the master device 63 via the master inbound and outbound busbars 62 after receiving the command packet E3 from the incoming bus bar 61 via the master. After receiving the command packet E3 transmitted by the slave device 64(3), the master device 63 generates the sequence R3 of the slave device 64(3) and adds it to the sort record R. At this time, the sort record R=[R1 R2 R3] .

Then, as shown in Fig. 13, the master device 63 sequentially broadcasts the command packets E4 to E32 for initialization via the master-out slave bus 61. Since the master-slave full-duplex sequence transmission system shown in FIG. 13 does not have the slave device receiving the command packets E4 to E32, the master device 63 does not receive the command packet responded by the slave device within a preset time. After E4 to E32, the slave device 64(3) is noted as the end of sorting, and the sorting is ended to generate the sort record R, at which time the sort record R = [R1 R2 R3].

Please refer to FIG. 14 , FIG. 15 , FIG. 16 , FIG. 17 , FIG. 18 , FIG. 19 , and FIG. 20 simultaneously . FIG. 14 is a schematic diagram showing broadcast sequencing records of the main control device, FIG. The drawing is a schematic diagram of the slave device recording the sorting record, the 16th drawing is a schematic diagram of the slave device 64(1), and the 17th is the schematic diagram of the slave device 64(1) transmitting the data packet, the 18th The figure shows a schematic diagram of the data packet being transmitted by the slave device 64(2), the figure 19 is a schematic diagram of the data packet being transmitted by the slave device 64(3), and the figure 20 is a slave device 64(1) The slave device 64(3) then transmits a schematic diagram of the data packet. As shown in Fig. 14, the master device 63 broadcasts the sort record R via the master-out slave-in bus bar 61. As shown in Fig. 15, the slave devices 64(1) to 64(3) record the sort record R = [R1 R2 R3] via the master-out slave input/output bus 61.

As shown in Fig. 16, the master control unit 63 broadcasts a command packet F1 for starting schedule recording via the master-out slave-in bus bar 61. As shown in Fig. 17, the slave devices 64(1) to 64(3) start the schedule record H1 after receiving the command packet F1 via the master-out slave-in bus bar 61. At this time, the schedule record H1 points to the sort R1. The sorting first slave device 64(1) transmits the data packet G1 to the master device 63 via the master inbound and outbound busbars 62 after receiving the command packet F1 from the incoming busbar 61 via the master. As shown in Fig. 18, the slave devices 64(1) to 64(3) monitor the packet transfer state of the master-in/out slave bus 62. When the data packet of the first slave device 64(1) is sorted, the schedule record H1 points to the sort R2. The slave device 64 (2) sorted to 2 successively transmits the data packet G2 according to the sort R2. As shown in Fig. 19, the slave devices 64(1) to 64(3) monitor the packet transfer state of the master-in/out-out bus bar 62. When the data packet of the slave device 64(2) sorted to 2 is completed, the schedule record H1 points to the sort R3. The slave device 64(3) at the end of the sorting succeeds in transmitting the data packet G3 according to the sort R3. As shown in Fig. 20, the slave devices 64(1) to 64(3) monitor the packet transfer state of the master-in/out slave bus 62. When the data packet of the slave device 64(3) at the end of the sorting is completed, the schedule record H1 points to the sort R1. The sorting first slave device 64(1) successively transmits the data packet G1 according to the sort R3.

Please refer to FIG. 21 and FIG. 22 at the same time. FIG. 21 is a schematic diagram showing a slave device transmitting a packet according to a sorting record, and FIG. 22 is a schematic diagram showing a packet transmitted by the master device. The slave devices 64(1) to 64(3) need not be continuously triggered by the master device 63, but the slave devices 64(1) to 64(3) record R=[R1 R2 R3] according to the order recorded by itself. The data packets G1 to G3 are continuously transmitted. As a result, the burden of the master entry and exit bus 62 can be saved. Further, since the slave devices 64(1) to 64(3) are not required to be constantly triggered by the master device 63, the master device 63 can perform data transfer or schedule management from the bus bar 62 through the master entry. For example, when the slave device 64(1) does not transmit the packet to the master device 63 within a waiting time, the master device 63 removes the sort record R1 of the slave device 64(1) and issues a schedule management. The command packet K1 is sent to the master-slave slave bus 61. The slave devices 64(1)-64(3) learn from the command packet K1 that the slave device 64(1) has failed and removes the sort record R1 of the slave device 64(1). The schedule record H1 is directed to the sort R2, and the slave device 64(2) successively transmits the data packet.

In conclusion, the present invention has been disclosed in the above preferred embodiments, and is not intended to limit the present invention. A person skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims.

1. . . Traditional master-slave full-duplex sequence transmission system

6. . . Master-slave full-duplex sequence transmission system according to an embodiment

11, 61. . . Main out of the bus

12, 62. . . Master in from the bus

13, 63. . . Master control unit

14(1)~14(N), 64(1)~64(N). . . Slave device

71. . . Drive circuit

72. . . Control circuit

81～85. . . step

91. . . Address field

92. . . Packet category field

93. . . Data/command code field

94. . . Error check code field

711. . . Transmission interface

712. . . One-way buffer

713. . . Bidirectional buffer

A1～A3, B1～B3, C1～C3, D1～D3, G1～G3. . . Data packet

E1 ~ E32, F1, K1. . . Command packet

R1 ~ R3. . . Sort

H1. . . Schedule record

Figure 1 is a schematic diagram showing a transmission system in accordance with a conventional master-slave full-duplex sequence.

Figure 2 is a schematic diagram showing the transmission of the first data packet by the master control device.

Figure 3 is a schematic diagram showing the transmission of the second data packet by the main control device.

Figure 4 is a schematic diagram showing the sending of the third data packet to the main control device.

Figure 5 is a schematic diagram showing the transmission and reception of data packets by the main control device.

Figure 6 is a schematic diagram showing a master-slave full-duplex sequence transmission system in accordance with an embodiment.

Figure 7 is a schematic diagram showing a slave device.

Figure 8 is a flow chart showing a method for transmitting a master-slave full-duplex sequence.

Figure 9 is a schematic diagram showing the packet format of the master-slave full-duplex sequence transmission system.

Figure 10 is a schematic diagram showing the first command packet for initializing the device for initialization.

Figure 11 is a schematic diagram showing the second command block for initializing the device to be initialized.

Figure 12 is a schematic diagram showing the sending of a third command packet for initialization by the master control device.

Figure 13 is a schematic diagram showing the transmission of the fourth to 32 command packets for initialization by the master control device.

Figure 14 is a schematic diagram showing the broadcast sequencing record of the main control device.

Figure 15 is a schematic diagram showing the sorting record recorded by the slave device.

Figure 16 is a schematic diagram showing the activation of slave device 64(1).

Figure 17 is a schematic diagram showing the transmission of data packets by slave device 64(1).

Figure 18 is a schematic diagram showing the transmission of data packets by slave device 64(2).

Figure 19 is a schematic diagram showing the transmission of a data packet by the slave device 64(3).

Figure 20 is a schematic diagram showing the slave device 64(1) successively transmitting data packets after the slave device 64(3).

Figure 21 is a schematic diagram showing the slave device transmitting a packet according to the sorting record.

Figure 22 is a schematic diagram showing the transmission of a packet by the main control device.

81～85. . . step

Claims (19)

A master-slave full-duplex sequence transmission method is used for a master-slave full-duplex sequence transmission system, and the master-slave full-duplex sequence transmission system includes a master-slave-in-sink-and-slave stream, a master-slave-slave stream, and a master-slave-slave stream a master-slave full-duplex sequence transmission method, the master-slave device polling the slave devices to generate a sort record; the master device passes the master-slave input The bus bar broadcasts the sort record; the slave devices record the sort record; the slave devices monitor a packet transfer status of the master incoming and outgoing bus bar; and the slave devices connect according to the packet transfer status and the sort record The data packet is transmitted to the main control device. The master-slave full-duplex sequence transmission method of claim 1, wherein the polling step further comprises: the master device polling the slave devices to record the number and location of the slave devices; And the master device plans a transmission sequence between the slave devices according to the number and location of the slave devices to generate the sort record. The master-slave full-duplex sequence transmission method according to claim 1, wherein the polling step is that the master device sequentially sends a plurality of command packets for initializing to poll the slave devices. The master-slave full-duplex sequence transmission method according to claim 1, wherein the sorting record generating step further comprises: annotating the slave device at the end of the sorting. Master-slave full-duplex sequence as described in claim 1 The transmission method further includes: the master control device broadcasts a command packet for starting a scheduled recording via the master-slave slave bus. The master-slave full-duplex sequence transmission method according to claim 1, wherein the slave devices comprise an i-th slave device ordered as i and an i+1th slave device ranked as i+1 And the device, the i+1th slave device monitors the packet transmission status, and subsequently transmits the data packet after the transmission data packet of the i-th slave device is completed; wherein i is a positive integer. The master-slave full-duplex sequence transmission method according to claim 6, wherein when the i-th slave device does not transmit a packet to the master device within a waiting time, the i-th slave device is sorted. The record is removed, and the i+1th slave device successively transmits the data packet. The master-slave full-duplex sequence transmission method according to claim 1, wherein the slave devices comprise a first slave device of a sorting head and an Nth slave device of a sorting end, the first one After the slave device monitors the packet transmission status and after the transmission data packet of the Nth slave device is completed, the data packet is successively transmitted according to the sequence record; wherein N is a positive integer. The method for transmitting a master-slave full-duplex sequence according to claim 1, wherein the packet format of the master-slave full-duplex sequence transmission system includes an address field, a packet format field, and a data/ Command code field and an error check code field. The master-slave full-duplex sequence transmission method of claim 1, wherein each of the slave devices includes a bidirectional buffer coupled to the master inbound and outbound busbars, each of the slaves The device listens to the packet transmission status via the bidirectional buffer. A master-slave full-duplex sequence transmission system includes: a master-slave-in-sink-and-slave stream; a master-slave-slave-slave stream; a plurality of slave devices, each of the slave devices including: a one-way buffer coupled to the slave a master-slave-in-stream bus; and a bidirectional buffer coupled to the master-slave-out-slave stream; and a master device for polling the slave devices to generate a plurality of sort records, and the master-slave The inbound bus bar broadcasts the sorting record, the slave devices record the sorting record, and each of the slave devices monitors a packet transmission state of the master inbound and outbound bus bar via the bidirectional buffer, and according to the packet transmission state and The sorting record successively transmits the data packet to the master device. The master-slave full-duplex sequence transmission system of claim 11, wherein the master device polls the slave devices to record the number and location of the slave devices, and according to the number of the slave devices And the location plans the order of transmission between the slave devices to generate the sort record. The master-slave full-duplex sequence transmission system of claim 11, wherein the master device sequentially issues a plurality of command packets for initializing to poll the slave devices. The master-slave full-duplex sequence transmission system of claim 11, wherein the master device further notes the slave device at the end of the sorting. The master-slave full-duplex sequence transmission system of claim 11, wherein the master device broadcasts a command packet for starting a scheduled recording via the master-slave slave bus. The master-slave full-duplex sequence transmission system of claim 11, wherein the slave devices comprise an i-th slave device ordered as i and an i+1th slave device ranked as i+1 And the device, the i+1th slave device monitors the packet transmission status, and subsequently transmits the data packet after the transmission data packet of the i-th slave device is completed; wherein i is a positive integer. The master-slave full-duplex sequence transmission system of claim 16, wherein the ith slave device sorts the i-th slave device when the i-th slave device does not transmit the packet to the master device within a waiting time The record is removed, and the i+1th slave device successively transmits the data packet. The master-slave full-duplex sequence transmission system of claim 11, wherein the slave devices comprise a first slave device of a sorting head and an Nth slave device of a sorting end, the first one After the slave device monitors the packet transmission status and after the transmission data packet of the Nth slave device is completed, the data packet is successively transmitted according to the sequence record; wherein N is a positive integer. The master-slave full-duplex sequence transmission system according to claim 11, wherein the packet format of the master-slave full-duplex sequence transmission system includes an address field, a packet format field, and a data/ Command code field and an error check code field.