CN106354597B - A kind of interface circuit and method for supporting SWP and 7816 interfaces while debugging - Google Patents
A kind of interface circuit and method for supporting SWP and 7816 interfaces while debugging Download PDFInfo
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- CN106354597B CN106354597B CN201610754121.4A CN201610754121A CN106354597B CN 106354597 B CN106354597 B CN 106354597B CN 201610754121 A CN201610754121 A CN 201610754121A CN 106354597 B CN106354597 B CN 106354597B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/261—Functional testing by simulating additional hardware, e.g. fault simulation
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/2205—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested
- G06F11/221—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing using arrangements specific to the hardware being tested to test buses, lines or interfaces, e.g. stuck-at or open line faults
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/273—Tester hardware, i.e. output processing circuits
- G06F11/2733—Test interface between tester and unit under test
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/362—Software debugging
- G06F11/3648—Software debugging using additional hardware
- G06F11/3652—Software debugging using additional hardware in-circuit-emulation [ICE] arrangements
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/362—Software debugging
- G06F11/3648—Software debugging using additional hardware
- G06F11/3656—Software debugging using additional hardware using a specific debug interface
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3664—Environments for testing or debugging software
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/36—Preventing errors by testing or debugging software
- G06F11/3668—Software testing
- G06F11/3696—Methods or tools to render software testable
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Abstract
The invention discloses a kind of interface circuits and method for supporting SWP and 7816 interfaces while debugging, are related to the debugging of chip multiplex roles and testing field.The present invention realizes an interface circuit with signal handoff functionality, including 3 modules and 4 external interfaces:Signal switching module, power reset processing module, power reset generation module and interface 1, interface 2, interface 3, interface 4;An emulator or chip with 7816 interfaces are connected by the interface circuit, is used for state response, test command is sent by 7816 interface equipments, the SWP interface routines of another emulator or chip is tested using SWP interface equipments.The present invention utilizes mobile phone or other SWP interface equipments, and the test of functional test, especially stability, compatibility is carried out for chip SWP interfaces, can greatly promote testing efficiency.
Description
Technical field
The interface circuit and method debugged simultaneously the present invention relates to a kind of SWP and 7816 interfaces, it is more to be mainly used in chip
Interface debugging and testing field.
Background technology
For support SWP interfaces intelligent card chip, a main application field be as SIM card in NFC mobile phone
Support non-switched news.Test for chip SWP interfaces, especially compatibility test, using mobile phone as test equipment at
Most effective method.Mobile phone can send 7816 inquiry status commands during SWP interface communications, if 7816 interfaces are unresponsive
It just carries out lower electricity and re-powers, test is caused to be interrupted.Usually SWP interface testings are needed in tested program i.e. using mobile phone
There are SWP interface testing programs, increases the program of 7816 interface power-up initializings and 7816 inquiry status command responses again, ensure
SWP interfaces work normally.For only including the double nip chip of 7816 interfaces and SWP interfaces, it can not be passed through in test process
In interface send test command.
Test for chip SWP interfaces, it would be desirable to have 7816 interfaces by chip and send test command, complete to core
The test of piece SWP interfaces.To realize this testing requirement, the present invention proposes a kind of to support connecing for SWP and 7816 interfaces while debugging
Mouth circuit and method are supported to send test command by the card reader of 7816 interfaces, the SWP interfaces of mobile phone are utilized to complete core
Piece SWP interface functions are tested.
Invention content
Technical problem solved by the invention is how to design a kind of interface for supporting SWP and 7816 interfaces while debugging
Circuit is realized and receives and dispatches test command by 7816 interfaces, SWP interface routines are debugged and tested.
The chip that 1/ chip 1 of emulator is realized in the present invention includes 7816 interfaces and a SWP interface, passes through one
Interface circuit with signal handoff functionality, and increase by 2/ chip 2 of emulator, test command is sent using 7816 interface equipments,
The SWP interface routines of 1/ chip 1 of emulator are debugged and tested using SWP interface equipments.
The interface circuit includes:Signal switching module, power reset processing module, power reset generation module totally 3
Module and interface 1, interface 2, interface 3, interface 4 totally 4 external interfaces.
Each component function declaration is as follows:
Signal switching module, including switch 1, switch 2, switch 3 totally 3 switching switching circuits, for realizing interface signal
Interconnection, 1/ chip 1 of emulator is connected with SWP interface equipments or 7816 interface equipments, by 2/ chip 2 of emulator and SWP
Interface equipment is connected;
Power reset processing module according to the power supply VCC_7816 of 7816 interface equipments output and resets RST_7816 letters
Number, it generates hot reset signal and is connect to the 7816 of 1/ chip 1 of emulator when 1/ chip 1 of emulator is connect with 7816 interface equipments
Mouth carries out hot reset operation;
Power reset generation module, out-put supply VCC_kit2 and reset RST_ki2 signals, for 2/ chip of emulator
2 7816 interfaces are powered on, lower electricity and reset operate.The module is independent circuit in interface circuit, by interface circuit
It is connected with 2/ chip 2 of emulator, interface circuit provides power supply VCC_kit2 after the power is turned on, for 2/ chip 2 of emulator, and makes RST_
Ki2 generates primary reset, later mono- direct power supplies of VCC_kit2, and RST_ki2 is that high level is completed to reset operation always, until interface
It is electric under circuit.If 2/ chip 2 of emulator is emulator, need first to power on emulator, then interface circuit is powered on;If imitative
2/ chip 2 of true device is real chip, and interface circuit provides power supply VCC_kit2 and powers for real chip after the power is turned on.
Interface 1, including 7816 interfaces and SWP interfaces, for connecting SWP interface equipments, 7816 interfaces include VCC_swp,
CLK_swp, RST_swp, IO_swp signal, SWP interfaces include SWIO_swp signals;
Interface 2, including 7816 interfaces and SWP interfaces, GPIO interface, for connecting 1/ chip of emulator, 1,7816 interface packet
Containing VCC_kit1, CLK_kit1, RST_kit1, IO_kit1 signal, SWP interfaces include SWIO_kit1 signals, GPIO interface packet
Signal containing GPIO_kit1;
Interface 3, including 7816 interfaces, for connecting 7816 interface equipments, including signal:CLK_7816、IO_7816、
VCC_7816、RST_7816;
Interface 4, including 7816 interfaces, for connecting 2/ chip 2 of emulator, including signal:CLK_kit2、IO_kit2、
VCC_kit2、RST_kit2;
Each component connection relation is as follows:
The VCC_swp of interface 1 and the VCC_kit1 of interface 2 are connected directly, the SWIO_ of the SWIO_swp and interface 2 of interface 1
Kit1 is connected directly;
Signal switching module is connected with CLK_swp, RST_swp, IO_swp of interface 1, with the CLK_kit1 of interface 2,
RST_kit1, IO_kit1, GPIO_kit1 are connected, and are connected with CLK_7816, IO_7816 of interface 3, the CLK_ with interface 4
Kit2, IO_kit2 are connected, and are connected with the hot reset signal of power reset processing module output;
Power reset processing module connect outer, the also VCC_ with interface 3 by hot reset signal with signal switching module
7816, RST_7816 is connected;
Power reset generation module is connected with VCC_kit2, RST_kit2 of interface 4.
The peripheral interface of interface circuit of the present invention connects 2 interface equipments and 2 emulator/chips, including:SWP
Interface equipment, 7816 interface equipments, 1/ chip 1 of emulator, 2/ chip 2 of emulator;
SWP interface equipments, the equipment of the SWP interface routines for 1/ chip 1 of tester simulator, including a SWP interface
With 7816 interfaces, SWP interface equipments send status inquiry command in receiving and dispatching SWP data procedures, by 7816 interfaces, when
When the command response error that 7816 interfaces receive, stop the data interaction of SWP interfaces;Generally use supports SWP interface communications
Mobile phone or other terminal devices are used to test as SWP interface equipments.
7816 interface equipments send the test command of SWP interfaces for the program to be measured into 1/ chip 1 of emulator, and
Receive the data of program response to be measured;The card reader of 7816 interface of generally use is as 7816 interface equipments for testing.
1/ chip 1 of emulator, for debugging or testing SWP interface routines, 1/ chip 1 of emulator realizes that chip only includes one
A SWP interfaces and 7816 interfaces, SWP interfaces are interface to be measured, 7816 interfaces of interface 3 be used for 7816 interface equipments into
Row communication realizes that 7816 interface equipments test the SWP interfaces of 1/ chip 1 of emulator, and 1/ chip 1 of emulator refers to having
The emulator or real chip of the emulation chip function of 7816 interfaces and SWP interfaces;
2/ chip 2 of emulator, the status inquiry command for the 7816 interfaces transmission to SWP interface equipments carry out response,
Ensure SWP interface equipments normal work, 2/ chip 2 of emulator refers to the emulation chip for having the function of 7816 interfaces and SWP interfaces
Emulator or real chip.
Interface circuit of the present invention, support survey SWP interface routines using the emulator of emulation chip function
Examination can also be supported to being surveyed simultaneous with the SWP interface routines of real chip of 7816 interfaces, GPIO interface, SWP interfaces
Examination.
The program to be measured of 1/ chip 1 of emulator operation controls GPIO_kit1 signals, simultaneously to switch 1, switch 2, switch 3
Switch over operation, realize power-up initializing, 7816 interfaces of 1 interface of interface, 2 interface, 3 interface 4,1 interface 2 of interface SWP connect
The communication function of mouth, operating procedure are as follows:
Step 1, interface circuit is connected and is powered on 1/ chip 1 of emulator, 2/ chip 2 of emulator, if emulation
1/ chip 1 of device and 2/ chip 2 of emulator are emulator, need first to power on emulator, then interface circuit is powered on, emulator 1/
Chip 1 and 2/ chip 2 of emulator are real chip, and interface circuit provides power supply and powers for real chip after the power is turned on;Emulator 1/
After the power is turned on, the program to be measured in 1/ chip 1 of emulator controls GPIO_kit1 to chip 1, makes 1 He of interface by signal switching module
Interface 2 is connected to induction signal;
Step 2, SWP interface equipments are connected, by program to be measured in 1/ chip 1 of emulator complete interface 2 SWP interfaces and
The initialization of 7816 interfaces of interface 2, program to be measured control GPIO_kit1, make interface 1 7816 interfaces and interface 4 7816
Interface is connected to induction signal, and 7816 interfaces for making interface 3 are connected to induction signal with 7816 interfaces of interface 2;
Step 3,7816 interface equipments are connected, 7816 interface equipments send SWP test commands to 1/ chip 1 of emulator, imitate
1/ chip 1 of true device and SWP interface equipments carry out SWP data communications, and SWP interface equipments connect by the 7816 of 1 interface 4 of interface simultaneously
Mouth sends status inquiry command to 2/ chip 2 of emulator, and 2/ chip of emulator, 2 normal response ensures 1/ chip of emulator, 1 He
SWP data between SWP interface equipments normally interact;Different SWP test commands are sent, until 1/ chip 1 of emulator is all
The test of SWP interface functions is completed.
Description of the drawings
Fig. 1 is the interface circuit structure figure for supporting SWP and 7816 interfaces while debugging.
Fig. 2 is SWP and 7816 interfaces while the operational flowchart of debugging.
Specific implementation mode
Interface circuit of the present invention and method are described in detail below in conjunction with the accompanying drawings.
As shown in Figure 1, interface circuit includes 3 modules and 4 external interfaces:3 modules include signal switching module, electricity
Source reset processing module, power reset generation module, 4 interfaces include interface 1, interface 2, interface 3, interface 4.Signal switches mould
Block carries out the switching of signal under the control of the GPIO_kit1 signals of interface 2, realizes the interconnection between each interface of power-up initializing,
And interconnection when SWP interface normal communications between interface.
Power up initialization process includes following 2 operations:
Operation one:When power-up initializing, interface 1 is connected with interface 2, CLK_swp connection CLK_kit1, RST_swp connections
RST_kit1, IO_swp connect IO_kit1, after SWP interface equipments are connected to interface 1, are completed between 1/ chip 1 of emulator
The initialization of 7816 and SWP interfaces;
Operation two:Power reset generation module is that 2/ chip 2 of emulator powers and generates reset operation, later emulator 2/
The order of 2 energy 7816 interface of normal response of chip.
SWP interface normal communications include following 2 operations:
Operation one:After completing power-up initializing, 7816 interfaces of interface 1 are connected with interface 4, CLK_swp connections CLK_
Kit2, IO_swp connect IO_kit2, the status inquiry command that SWP interface equipments are sent by 7816 interfaces, 2/ chip of emulator
2 being capable of normal response;
Operation two:After completing power-up initializing, 7816 interfaces of interface 3 are connected with interface 2, CLK_7816 connections CLK_
Kit1, IO_7816 connect IO_kit1, and after 7816 interface equipments are connected to interface 3,7816 are carried out between 1/ chip 1 of emulator
Interface initialization, 7816 interface equipments control VCC_7816 and RST_7816 signals and send cold reset or hot reset, by electricity
Source reset processing module generates hot reset, and hot reset operation, later 7816 interface equipments and emulation are carried out to 1/ chip 1 of emulator
The data transmission of 7816 test commands is carried out between 1/ chip 1 of device.
As shown in Fig. 2, the operational flowchart that SWP and 7816 interfaces are debugged simultaneously.It is connect with interface equipment according to interface suitable
Sequence is divided into 3 steps:
Step 1, interface circuit is connected with 1/ chip 1 of emulator, 2/ chip 2 of emulator, and is powered on, emulator 1/
Program in chip 1 controls GPIO_kit1, and interface 1 is made to be connected with interface 2, into 7816 interface states, power reset production
Raw module is powered on to 7816 interfaces of 2/ chip 2 of emulator, and the program in 2/ chip 2 of emulator brings into operation into 7816 interfaces
Reception state;
Step 2, SWP interface equipments are connected, SWP interface equipments are completed with 1/ chip 1 of emulator by 7816 interfaces initial
Change connection, SWP interfaces, 7816 interfaces of 1/ chip 1 of SWP interface equipments and emulator can carry out data transmit-receive behaviour at this time
Make.After the completion of 1/ chip of emulator, 1 Program detects initialization, control GPIO_kit1 makes 7816 interfaces and interface of interface 1
4 are connected, and 7816 interfaces of interface 3 is made to be connected with interface 2, after realizing initialization, the SWP interfaces and emulator of SWP interface equipments
1/ chip 1 communicates, and 7816 interfaces and 2/ chip 2 of emulator of SWP interface equipments communicate, 7816 interface equipments and 1/ core of emulator
Piece 1 communicates.
Step 3,7816 interface equipments are connected, 7816 interface equipments send SWP by 7816 interfaces to 1/ chip 1 of emulator
After 1/ chip 1 of emulator receives order, data interaction is carried out with the SWP interfaces of SWP interface equipments for test command.SWP interfaces are set
When standby SWP interface communications, status inquiry command is sent to 2/ chip 2 of emulator by 7816 interfaces, 2/ chip 2 of emulator is received
To after status inquiry command, status information is correctly responded and returns, SWP interface equipments receive the response of 2/ chip 2 of emulator, after
It is continuous to carry out SWP interface data communications with 1/ chip 1 of emulator.The SWP interfaces of SWP interface equipments are carried out with 1/ chip 1 of emulator
SWP data interactions, 7816 interfaces and 2/ chip 2 of emulator of SWP interface equipments carry out 7816 data interactions, primary until completing
SWP data communications, 1/ chip 1 of emulator complete a SWP interface communication after to 7816 interface equipments send test command into
A SWP test command is completed in row response, and 7816 interface equipments send different SWP to 1/ chip 1 of emulator and test life later
It enables, until 1/ chip of emulator, 1 all SWP interface functions tests are completed.
Claims (4)
1. a kind of interface circuit for supporting SWP and 7816 interfaces while debugging, it is characterised in that 1/ chip 1 of emulator includes one
7816 interfaces and a SWP interface by an interface circuit with signal handoff functionality, and increase by 2/ chip 2 of emulator,
Test command is sent using 7816 interface equipments, the SWP interface routines of 1/ chip 1 of emulator are carried out using SWP interface equipments
Debugging and test, wherein interface circuit includes:Signal switching module, power reset processing module, power reset generation module are total
Totally 4 external interfaces, each component function declaration are as follows for 3 modules and interface 1, interface 2, interface 3, interface 4:
Signal switching module includes switch 1, switch 2, switch 3 totally 3 switching switching circuits, for realizing the mutual of interface signal
Even, 1/ chip 1 of emulator is connected with SWP interface equipments or 7816 interface equipments, by 2/ chip 2 of emulator and SWP interfaces
Equipment is connected;
The power supply VCC_7816 and reset RST_7816 signals that power reset processing module is exported according to 7816 interface equipments, generate
Hot reset signal carries out 7816 interfaces of 1/ chip 1 of emulator when 1/ chip 1 of emulator is connect with 7816 interface equipments
Hot reset operates;
Power reset generation module out-put supply VCC_kit2 and reset RST_ki2 signals, for 2/ chip 2 of emulator
7816 interfaces are powered on, lower electricity and reset operate;
Interface 1 includes 7816 interfaces and SWP interfaces, and for connecting SWP interface equipments, 7816 interfaces include VCC_swp, CLK_
Swp, RST_swp, IO_swp signal, SWP interfaces include SWIO_swp signals;
Interface 2 includes 7816 interfaces, SWP interfaces, GPIO interface, includes VCC_ for connecting 1/ chip of emulator, 1,7816 interface
Kit1, CLK_kit1, RST_kit1, IO_kit1 signal, SWP interfaces include GPIO_ comprising SWIO_kit1 signals, GPIO interface
Kit1 signals;
Interface 3 includes 7816 interfaces, for connecting 7816 interface equipments, including signal:CLK_7816、IO_7816、VCC_
7816、RST_7816;
Interface 4 includes 7816 interfaces, for connecting 2/ chip 2 of emulator, including signal:CLK_kit2、IO_kit2、VCC_
kit2、RST_kit2;
Each component connection relation is as follows:
The VCC_swp of interface 1 and the VCC_kit1 of interface 2 are connected directly, the SWIO_kit1 of the SWIO_swp and interface 2 of interface 1
It is connected directly;
Signal switching module is connected with CLK_swp, RST_swp, IO_swp of interface 1, CLK_kit1, RST_ with interface 2
Kit1, IO_kit1, GPIO_kit1 are connected, and are connected with CLK_7816, IO_7816 of interface 3, with the CLK_kit2 of interface 4,
IO_kit2 is connected, and is connected with the hot reset signal of power reset processing module output;
Power reset processing module is connected with VCC_7816, RST_7816 of interface 3;
Power reset generation module is connected with VCC_kit2, RST_kit2 of interface 4.
2. a kind of interface circuit for supporting SWP and 7816 interfaces while debugging according to claim 1, it is characterised in that institute
Periphery 2 interface equipments of connection and 2 emulator/chips of interface circuit are stated, including:SWP interface equipments, 7816 interfaces are set
Standby, 1/ chip 1 of emulator, 2/ chip 2 of emulator;
SWP interface equipments, the equipment of the SWP interface routines for 1/ chip 1 of tester simulator, including a SWP interface and one
A 7816 interface, SWP interface equipments send status inquiry command in receiving and dispatching SWP data procedures, by 7816 interfaces, when 7816
When the command response error that interface receives, stop the data interaction of SWP interfaces;
7816 interface equipments, the test command of SWP interfaces is sent for the program to be measured into 1/ chip 1 of emulator, and is received
The data of program response to be measured;
1/ chip 1 of emulator, for debugging or testing SWP interface routines, the SWP interfaces of 1/ chip 1 of emulator are interface to be measured,
7816 interfaces of interface 3 realize 7816 interface equipments to 1/ chip 1 of emulator for being communicated with 7816 interface equipments
SWP interfaces are tested, and 1/ chip 1 of emulator refers to the emulator of the emulation chip function with 7816 interfaces and SWP interfaces
Or real chip;
2/ chip 2 of emulator, the status inquiry command for the 7816 interfaces transmission to SWP interface equipments carry out response, ensure
SWP interface equipments work normally, and 2/ chip 2 of emulator refers to the imitative of the emulation chip function with 7816 interfaces and SWP interfaces
True device or real chip.
3. a kind of interface circuit for supporting SWP and 7816 interfaces while debugging according to claim 1, it is characterised in that branch
Hold and SWP interface routines tested using the emulator of emulation chip function, can also support to simultaneous with 7816 interfaces,
GPIO interface, SWP interfaces the SWP interface routines of real chip tested.
4. a kind of method for supporting SWP and 7816 interfaces while debugging is applied to interface circuit described in claim 1, special
Sign is the control GPIO_kit1 signals of the program to be measured in 1/ chip 1 of emulator, is carried out at the same time to switch 1, switch 2, switch 3
Handover operation realizes the SWP interfaces of power-up initializing, 7816 interfaces of 1 interface of interface, 2 interface, 3 interface 4,1 interface 2 of interface
Communication function, operating procedure are as follows:
Step 1, interface circuit is connected and is powered on 1/ chip 1 of emulator, 2/ chip 2 of emulator, if emulator 1/
Chip 1 and 2/ chip 2 of emulator are emulator, need first to power on emulator, then interface circuit is powered on, 1/ chip of emulator
1 and 2/ chip 2 of emulator be real chip, interface circuit provide after the power is turned on power supply be real chip power supply;1/ chip 1 of emulator
After the power is turned on, program to be measured controls GPIO_kit1, so that interface 1 is connected to induction signal with interface 2 by signal switching module;
Step 2, SWP interface equipments are connected, the SWP interfaces and interface of interface 2 are completed by program to be measured in 1/ chip 1 of emulator
The initialization of 2 7816 interfaces, program to be measured control GPIO_kit1, make 7816 interfaces of interface 1 and 7816 interfaces of interface 4
It is connected to induction signal, 7816 interfaces for making interface 3 are connected to induction signal with 7816 interfaces of interface 2;
Step 3,7816 interface equipments are connected, 7816 interface equipments send SWP test commands, emulator to 1/ chip 1 of emulator
1/ chip 1 and SWP interface equipments carry out SWP data communications, SWP interface equipments simultaneously by 7816 interfaces of 1 interface 4 of interface to
2/ chip 2 of emulator sends status inquiry command, and 2/ chip of emulator, 2 normal response ensures that 1/ chip 1 of emulator and SWP connect
SWP data between jaws equipment normally interact;Different SWP test commands are sent, until 1/ chip of emulator, 1 all SWP connect
Mouth functional test is completed.
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CN107528571B (en) * | 2017-09-07 | 2021-01-26 | 成都航天通信设备有限责任公司 | FPGA simulator switching device and method |
CN107819528A (en) * | 2017-09-28 | 2018-03-20 | 四川九州电子科技股份有限公司 | A kind of test circuit for supporting a variety of WiFi modules |
CN115174431B (en) * | 2022-06-30 | 2023-09-05 | 无锡融卡科技有限公司 | Simple SWP full duplex logic signal acquisition device and method |
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