CN2924611Y - Multifunctional debugging-programmer based on ISP mode - Google Patents

Abstract

The utility model provides an ISP-based multifunction debugging programming device which comprises a circuit board and a parallel port socket arranged on the circuit board, a goal-connecting socket and a CPLD. The utility model is characterized in that the utility model also comprises a memory card, a key board, and a LCD display module, a power module, a USB to serial interface, a level-converting circuit, a goal-driven and a protection circuit and a SCM. The CPLD is connected with the USB to serial interface, on one hand, and connected with the parallel port socket through the level-converting circuit and the goal-connecting socket through the goal-driven and the protection circuit on the other hand. While being connected with the key board, the LCD display module and the memory card, the SCM is also connected with the CPLD to receive signals from the USB to serial interface, the parallel port socket and the goal-connecting socket. The power module supplies the working voltages to all the components mentioned above. The utility model has the advantages of rational design, simple structure, small volume, easy carriage and can support the SCM, the programmable devices and the embedded processors. The utility model can be used at offices, on fields or trips conveniently.

Description

Multi-functional debugging, programmable device based on the ISP mode

Technical field

It is a kind of based on the multi-functional debugging of ISP mode and the device of programming that the utility model belongs to.

Background technology

ISP (In-System Programming) is meant at system programmable that blank device on the circuit board can be programmed and writes final user's code, and do not need from circuit board to take off device, and the device of having programmed also can be wiped or programming again with the ISP mode.The single-chip microcomputer of present support ISP mode, programming device, the debugger of flush bonding processor and programmable device be disunity all, the exploitation that generally all is a kind of device all needs to overlap independently debugger and programmable device, the debugging of dissimilar devices and programmer can not be general, and most programmable devices or do not support the offline programming function, or do not support offline programming (the same final user's code of can only programming when referring to offline programming of a plurality of final user's codes, if will programme different final user's codes, then all need on the computing machine to download again could programme at every turn), and final user's code to the operating personnel that programme without any secrecy provision.

Summary of the invention

To be solved in the utility model is exactly the existing problem of device of above-mentioned existing support ISP mode, and a kind of multi-functional debugging and programmable device based on the ISP mode is provided.

The utility model comprises circuit board and is installed in parallel port socket, target gang socket and CPLD on the circuit board, it is characterized in that also comprising that storage card, keyboard, LCD display module, power module, USB change serial interface, level shifting circuit, target drives and holding circuit and single-chip microcomputer, CPLD one side and USB change serial interface and join, be connected with the parallel port socket by level shifting circuit respectively on the other hand, be connected with target gang socket by target drives, holding circuit; Single-chip microcomputer with keyboard with when LCD display module and storage card link to each other, the signal that joins and change serial interface, parallel port socket and target gang socket from USB with CPLD also to receive; Power module provides operating voltage for aforementioned each parts.

Above-mentioned keyboard and LCD display module and storage card also can join by CPLD and single-chip microcomputer.

Above-mentioned USB changes serial interface and can replace with serial interface.

The utility model is reasonable in design, and is simple in structure, processing ease, volume is little, and is easy to carry, not only supports the debugging of multiple single-chip microcomputer, programming device, flush bonding processor, with the offline programming of a plurality of target programs, also be supported on the storage card encryption function to final user's code.This device has overcome common debugger and programmable device disunity, programmable device are not supported the offline programming function of a plurality of final user's codes and final user's code does not have encipherment protection to the operating personnel of programming deficiency; both can use, make things convenient for field condition again or the use of going on business in laboratory office.

Description of drawings

Fig. 1 is the synoptic diagram of the utility model inside;

Fig. 2 is the electrical schematic diagram of the utility model power module (10);

Fig. 3 is the electrical schematic diagram of the utility model target drives, holding circuit (6) and target gang socket (7);

TJP1 among Fig. 3 is target gang socket (7).

Embodiment

Referring to Fig. 1, USB is housed on circuit board (12) changes serial interface (or serial interface) (2), parallel port socket (4), target gang socket (7), level shifting circuit (3), CPLD (5), target drives, holding circuit (6), single-chip microcomputer (11), storage card (1), keyboard (9), LCD display module (8), power module (10).Single-chip microcomputer (11), CPLD (5) and storage card (1) have been formed core of the present utility model; keyboard (9) and LCD display module (8) are the man-machine conversation parts of device; level shifting circuit (3), target drives, holding circuit (6) are the interface protective circuits of device; USB changes serial interface (or serial interface) (2), parallel port socket (4) is device and Computer Communications Interface part; target gang socket (7) is device and objective chip communication interface part, and power module (10) is responsible for the required voltage of each several part.Keyboard (9) is connected with single-chip microcomputer (11) with LCD display module (8) is independent separately; single-chip microcomputer (11) is connected with other various pieces by CPLD (5); parallel port socket (4) is connected with CPLD (5) by level shifting circuit (3); CPLD (5) is connected with target gang socket (7) by target drives, holding circuit (6), and USB changes serial interface (or serial interface) (2) and links to each other with CPLD with storage card (1) is all independent.

Single-chip microcomputer (11) adopts MSP430F161X as main control chip; primary control program is housed in it in advance; by this programmed control other parts except that power module (10), because primary control program not within protection domain of the present utility model, therefore itself is not described in detail this program.CPLD (5) adopts EPM7128 to play logic switching effect, storage card (1) adopts the SD card both can directly duplicate a large amount of final user's codes from computing machine by card reader, also can duplicate final user's code by special software from computing machine, but utilize its encryption function protection final user code simultaneously by this multi-functional debugging and programmable device; Single-chip microcomputer (11) reading and writing memory card (1) is realized by the logic function module of selecting CPLD (5) to connect storage card (1).Single-chip microcomputer (11), CPLD (5) and storage card (1) have been formed the core of total system jointly, the system voltage of use+3.3v (being the VCC among Fig. 2).Level shifting circuit (3) uses General Logic chip 74HC14, uses+3.3v system voltage, with the parallel port logic voltage of+5v convert to system's use+the 3.3v system voltage, prevent from that CPLD (5) from directly receiving on the parallel port socket (4) to be burnt out easily.The principle of target drives, holding circuit (6) is seen Fig. 3, the function that TU6 and TU7 electrify and flat turn and change and protect, its supply voltage according to the operating voltage of objective chip at+2.5v to variable between the+3.3v, can either protect the objective chip safe handling like this, the logic voltage of multi-functional debugging and programmable device and objective chip is more mated; TU5 and related device thereof are followed the tracks of the operating voltage of objective chip, wherein TU5A and related device thereof are multi-functional debugging and programmable device internal standard voltage generation circuit, produce pulse-width signal by PWMVO, do driving voltage through following by TU5A and TQ1 after the filtering, and whether send into AD through after the dividing potential drop, it is correct to follow the tracks of driving voltage; Whether TU1 controlling and driving voltage is to the objective chip output voltage; The voltage of objective chip feeds back by TR6, by TDP1 and TDP2 with the voltage clamp that feeds back at+2.5v to the+3.3v, follow the operating voltage of back by TU5B and TQ2 as TU6 and TU7; TU2, TU3, TU4 be when the single-chip microcomputer of certain model is encrypted to objective chip special pin output HIGH voltage, whether TU4 control high voltage is exported, and can check by sending into AD after TR12, the TR13 dividing potential drop whether high voltage correct.Keyboard (9) is used for selecting corresponding work mode to single-chip microcomputer (11) input control information by single-chip microcomputer (11).LCD display module (8) needs+5v power supply is used to show relevant information under single-chip microcomputer (11) control.Power module (10) for multi-functional debugging and programmable device provide the required various voltages of work (+6.5v ,+5v ,+3.3v (being VCC) and+2.5v).USB changes serial interface (or serial interface) (2) and adopts USB to change serial mode (using CP2102 as conversion chip), and hardware is easy to connect like this.

Claims (3)

1, a kind of multi-functional debugging based on the ISP mode, programmable device, comprise circuit board and be installed in parallel port socket on the circuit board, target gang socket and CPLD, it is characterized in that also comprising storage card (1), keyboard (9), LCD display module (8), power module (10), USB changes serial interface (2), level shifting circuit (3), target drives and holding circuit (6) and single-chip microcomputer (11), CPLD (5) one side and USB change serial interface (2) and join, be connected with parallel port socket (4) by level shifting circuit (3) respectively on the other hand, pass through target drives, holding circuit (6) is connected with target gang socket (7); Single-chip microcomputer (11) with keyboard (9) with when LCD display module (8) and storage card (1) link to each other, the signal that joins and change serial interface (2), parallel port socket (4) and target gang socket (7) from USB with CPLD (5) also to receive; Power module (10) provides operating voltage for aforementioned each parts.

2, multi-functional debugging, programmable device based on the ISP mode as claimed in claim 1 is characterized in that all joining by CPLD (5) and single-chip microcomputer (11) with keyboard (9) and LCD display module (8) and storage card (1).

3, multi-functional debugging, programmable device based on the ISP mode as claimed in claim 1 or 2 is characterized in that replacing USB with serial interface changes serial interface (2).

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