CN102446138B - A Calibration Method of MAP Data in Single Chip Microcomputer System - Google Patents

Abstract

The invention relates to a method for calibrating the MAP data of a single chip system, comprising the following steps of: 1) setting a plurality of areas in the internal memory of a single chip; 2) storing the original data of all MAPs in the internal memory of the single chip; 3) storing the initial address and the occupied space size of each MAP in the internal memory of the single chip; 4) storing the index sequence number of each MAP in the internal memory of the single chip; 5) at the initialization of the system, building and initializing an MAP pointer array; 6) in the online calibration process, copying the MAP which is calibrated now into an RAM (Random-Access Memory) in the single chip from the FLASH in the single chip, and modifying the corresponding data in the RAM; and 7) obtaining the initial address of the present storage space of the MAP by searching for the corresponding MAP pointer, thereby performing table look-up interpolation operation on the data in the internal memory area which is started with the initial address and has a corresponding space size. With the method provided in the invention, the complexity degree and manufacturing cost of the single chip system can be reduced.

Description

A Calibration Method of MAP Data in Single Chip Microcomputer System

technical field

The invention relates to a MAP data calibration method, in particular to a MAP data calibration method used in a small-capacity RAM single-chip computer system.

Background technique

In the field of automotive electronics, most embedded systems use single-chip microcomputers as the control core. Due to the complexity of the control system and the diversity of objects, there are a large number of parameters in the single-chip microcomputer system that cannot be determined during the system design, and need to be determined through matching calibration after the system development is completed. And this kind of matching calibration often uses the calibration tool software on the PC to establish a connection with the single-chip system through a bus-based protocol, and transmits the operations on the calibration tool software to the single-chip microcomputer, and the single-chip microcomputer completes the corresponding operation. On the FLASH in the single-chip microcomputer, these parameters that need to be calibrated are saved, that is, the initial value of the MAP; the operation of the calibration tool software is received through the bus-based protocol, and the data of the MAP is updated; because the value in the FLASH can only be obtained through the FLASH programming software. Update, and when running the FLASH programming software, it is generally impossible to execute the program to read the FLASH at the same time. It is necessary to stop the normal program operation and enter the special FLASH programming module. Therefore, this method cannot support the online calibration of MAP; for this problem, The commonly used solution at present is to copy the MAP data from the FLASH in the MCU to the RAM in the MCU. During online calibration, the MAP data in the RAM is modified. Through the data query function, the modified result of the MAP data is detected. . However, this method also has defects: because the RAM capacity in the single-chip microcomputer is often small, and there are many MAPs that need to be calibrated in some embedded systems, such as the engine control system ESP, the gearbox control system ABS and the vehicle dynamics control system TCS, etc., often cannot copy all MAP data from the FLASH in the single-chip microcomputer to the RAM in the single-chip microcomputer. At present, there are two commonly used solutions to this problem: one is to expand the RAM outside the microcontroller for calibration, which requires the address bus and data bus to be drawn out on the pins of the microcontroller, which takes up a lot of pin resources and will cause The electromagnetic compatibility of the system deteriorates, which increases the system cost; the second is to divide all the calibrated MAP into blocks through block calibration, and only copy the MAP data of one area to the RAM in the single-chip microcomputer for one calibration, so only one area can be calibrated at a time This method has great limitations. It is impossible to determine in advance how many MAPs need to be modified for one calibration. When MAP is partitioned, it is impossible to choose a division method suitable for the entire calibration stage, and it needs to be divided between multiple calibration pages. Switch back and forth between, and for this kind of online switching, the previous calibration work will be lost.

Contents of the invention

In view of the above problems, the purpose of the present invention is to provide a single-chip system MAP data calibration method that can better support the online calibration of the single-chip system, especially the small-capacity RAM single-chip system.

To achieve the above object, the present invention takes the following technical solutions: a single-chip microcomputer system MAP data calibration method is characterized in that: it comprises the following steps:

1) Set up several areas in the single-chip memory, including the following steps:

① Set a memory area according to the total amount of data in the MAP as the calibration FLASH;

② Set a memory area according to the size of the MAP data that can be calibrated at one time, as the calibration RAM;

③ Set a memory area according to the number of MAPs as the information FLASH;

④ Set a memory area according to the total amount of data in the MAP as the index FLASH;

2) save the original data of all MAPs in the calibration FLASH area that is set by step 1);

3) Obtain the starting address and the occupied space size of each MAP stored in the calibration FLASH through the existing tool software, and store it in the information FLASH area set by step 1);

4) Obtain the index sequence number of the MAP stored in each byte in the calibration FLASH area by existing tool software, and store it in the index FLASH area set by step 1);

5) When the system is initialized, a MAP pointer array is established and initialized, including the following steps:

① In the MAP management module, set a pointer array, the subscript of the array element is the index number of the MAP, the number of the array elements is the same as the number of the MAP, and the array element is a pointer, pointing to the starting point of the storage space of the MAP in the memory origin address;

②When the system is initialized, according to the number of MAPs, the starting address of each MAP in the calibration FLASH is sequentially obtained from the information FLASH, and then each MAP pointer in step ① points to the starting address of each MAP in the calibration FLASH. origin address;

If you need to modify the MAP data, go to step 6);

If you need to query the MAP data, go to step 7);

6) During the online calibration process, copy the MAP being calibrated from the FLASH in the microcontroller to the RAM in the microcontroller, and modify the corresponding data in the RAM, including the following steps:

① After the calibration tool software on the PC is connected to the single-chip microcomputer system, modify a data in a MAP in the calibration tool software. At this time, the calibration tool software calculates the address offset of the data point relative to the starting address of the MAP, Then according to the starting address of the MAP in the calibration FLASH, further determine the address of the data point stored in the calibration FLASH, and the calibration tool software sends the address and the modified data to the single-chip microcomputer;

② According to the address sent by the calibration tool software in step ①, the single-chip microcomputer queries the MAP index number stored in the corresponding address in the index FLASH, and then according to the index number, accesses the element with the index number in the structure array in the information FLASH , and then obtain the starting address and occupied space of the MAP in the calibrated FLASH;

③ According to the MAP index serial number obtained in step ②, the MCU queries the corresponding MAP pointer to obtain the address currently pointed to by the MAP pointer:

If the address is in the calibrated FLASH, go to step ④;

If the address is located in the calibration RAM, go to step ⑤;

④According to the starting address and occupied space obtained in step ②, the microcontroller will be located in the calibrated FLASH starting with the starting address, and all the data in the corresponding space size will be copied to the blank area of the calibrated RAM; record the current calibrated RAM area The size of the space used; then modify the pointer of the MAP to point to the starting address of the MAP storage space in the marked RAM area, and enter step 5;

⑤The storage address of the data point to be modified in the calibration FLASH is known, and the single-chip microcomputer obtains the address of the data point in the calibration RAM according to the start address of the MAP where the data point is located in the calibration FLASH and the start address in the calibration RAM. Store the address, modify the data in the address to the updated data;

7) Knowing the starting address and occupied space of the MAP in FLASH, by querying the corresponding MAP pointer, the starting address of the current storage space of the MAP is obtained, so as to start with the starting address, the memory of the corresponding space size The data in the area is used for table lookup and interpolation operations, including the following steps:

①The single-chip microcomputer passes the starting address of MAP in the calibrated FLASH as a parameter to the look-up table interpolation function;

② The table look-up interpolation function queries the MAP index serial number stored in the corresponding address in the index FLASH according to the starting address obtained by step ①;

3. the single-chip microcomputer queries the corresponding MAP pointer according to the MAP index serial number obtained by step 2., and obtains the starting address of the current storage space of the MAP;

④ Based on the starting address obtained in step ③, perform a lookup table interpolation operation on the data in the memory area of the corresponding space size, and end.

In the above step 3), the starting address and occupied space of each MAP stored in the calibrated FLASH are obtained through the existing MAP storage analysis software.

In the above step 4), the index sequence number of the MAP stored in each byte in the calibration FLASH area is obtained through the existing MAP storage analysis software.

In the above step 4), in the index FLASH, each byte stores an index sequence number.

In the above step 4), when the number of MAPs is greater than 255, an index sequence number is stored in every two bytes in the index FLASH.

Above-mentioned step 3) in, adopt structure array to save the initial address of each MAP and the occupied space size; The structure includes two members: the space occupied by the MAP and the starting address of the MAP in the calibrated FLASH.

The present invention has the following advantages due to the adoption of the above technical scheme: 1, because the present invention only copies the MAP data that needs to be calibrated into the RAM in real time online, thereby occupying less RAM space and solving the problem of a large number of small-capacity RAM single-chip microcomputer system calibrations data problem. 2. Since the present invention can calibrate all MAP data that needs to be calibrated online, it solves the existing problem that all MAPs cannot be calibrated at one time due to block calibration or insufficient RAM space. By adopting the invention, the complexity and manufacturing cost of the single-chip microcomputer system can be reduced.

Description of drawings

Fig. 1 is a schematic diagram of the division of the memory area of the single-chip microcomputer of the present invention;

Fig. 2 is the schematic diagram of the MAP pointer when the present invention is initialized;

Fig. 3 is a schematic diagram of the MAP pointer in the online calibration of the present invention.

Detailed ways

As shown in Figure 1, the inventive method comprises the following steps:

1) Set several areas in the single-chip memory;

2) Preserve the original data of all MAPs in the single-chip memory;

3) Save the starting address and the occupied space size of each MAP in the single-chip memory;

4) store the index sequence number of each MAP in the single-chip microcomputer memory;

5) When the system is initialized, a MAP pointer array is established and initialized;

6) During the online calibration process, copy the MAP being calibrated from the FLASH in the microcontroller to the RAM in the microcontroller, and modify the corresponding data in the RAM;

7) Knowing the starting address and occupied space of the MAP in FLASH, by querying the corresponding MAP pointer, the starting address of the current storage space of the MAP is obtained, so as to start with the starting address, the memory of the corresponding space size The data in the area is used for table lookup and interpolation operations.

The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

1) Set up several areas in the single-chip memory, including the following steps:

① Set a memory area according to the total amount of MAP data, as a calibration FLASH, used to save all MAP data.

In the embodiment of the present invention, as shown in FIG. 1 , the 128K space starting from the address 0x140000 in the memory of the single-chip microcomputer is set as the calibrated FLASH.

② According to the amount of MAP data that can be calibrated at one time, set up a memory area as a calibration RAM, which is used to save the latest MAP data updated during the online calibration process.

In the embodiment of the present invention, as shown in FIG. 1 , the 64K space starting from the address 0x400000 in the memory of the single-chip microcomputer is set as the calibration RAM.

③A memory area is set according to the number of MAPs as the information FLASH, which is used to save the starting address of each MAP in the calibration FLASH and the space occupied by the MAP.

In the embodiment of the present invention, as shown in FIG. 1 , the 8K space starting from the memory address 0x100000 of the single-chip microcomputer is set as the information FLASH.

④ According to the size of the total amount of data in the MAP, a memory area is set as the index FLASH, which is used to save the index number of the MAP stored in the corresponding address of the calibrated FLASH.

In the embodiment of the present invention, as shown in FIG. 1 , the 128K space starting from the address 0x160000 in the memory of the single-chip microcomputer is set as the index FLASH.

2) Save the original data of all MAPs in the single-chip memory, specifically:

Save the original data of all MAPs in the calibration FLASH area set by step 1).

3) Preserving the starting address and the size of the occupied space of each MAP in the single-chip memory, including the following steps:

① Obtain the starting address and occupied space of each MAP stored in the calibrated FLASH through existing tool software, such as MAP storage analysis software;

② Save the starting address and occupied space of each MAP in the calibrated FLASH in the information FLASH area set by step 1).

Among them, a structure array can be used to record the starting address and occupied space of each MAP; the subscript of the array element is the index number of the MAP, the number of array elements is the same as the number of MAP, and the array elements are structures. It includes two members: the space occupied by the MAP and the starting address of the MAP in the calibrated FLASH.

In the above structure, a 16-bit variable can be used to record the space occupied by the MAP, and a 32-bit variable can be used to record the starting address of the MAP in the calibrated FLASH.

Suppose in the embodiment of the present invention, there are 6 MAPs in the calibration FLASH, the first MAP (MAP0) is stored in the range of 0x140000～0x1400FF, the second MAP (MAP1) is stored in the range of 0x140100～0x1401FF, and the third MAP is stored in the range of 0x140100～0x1401FF One MAP (MAP2) is stored in the range of 0x140200～0x1402FF, the fourth MAP (MAP3) is stored in the range of 0x140300～0x1403FF, the fifth MAP (MAP4) is stored in the range of 0x140400～0x1404FF, the sixth MAP (MAP5) is stored in the range of 0x140500～0x1405FF, and the MAP serial numbers corresponding to these 6 MAPs are 0, 1, 2, 3, 4 and 5 respectively, so: the structure array in the information FLASH correspondingly includes six array elements , the array element 0 is {0x100, 0x140000} (indicating that the size of MAP0 is 0x100, and the starting address is 0x140000), the array element 1 is {0x100, 0x140100}, the array element 2 is {0x100, 0x140200}, and the array element 3 is { 0x100, 0x140300}, array element 4 is {0x100, 0x140400}, array element 5 is {0x100, 0x140500}.

4) saving the index sequence number of each MAP in the single-chip microcomputer memory, comprising the following steps:

①Use the existing tool software, such as MAP storage analysis software, to obtain the index number of the MAP stored in each byte in the calibration FLASH area (starting from 0);

②In the index FLASH area set by step 1), store the index sequence number of the MAP stored in the corresponding address of the calibration FLASH in units of bytes.

Among them, if the number of MAPs is greater than 255, an index sequence number can be stored in every two bytes in the index FLASH.

In the embodiment of the present invention, all stored in 0x160000～0x1600FF are 0, stored in 0x1600100～0x1601FF are all 1, stored in 0x1600200～0x1602FF are all 2, stored in 0x1600300～0x1603FF are all 3, 0x1600400～0x1604FF All 4 are stored in 0x1600500~0x1605FF, and 5 are stored in 0x1600500~0x1605FF.

5) When the system is initialized, a MAP pointer array is established and initialized, including the following steps:

① In the MAP management module, set a pointer array, the subscript of the array element is the index number of the MAP, the number of the array elements is the same as the number of the MAP, and the array element is a pointer, pointing to the starting point of the storage space of the MAP in the memory The start address is used to indicate that the MAP is stored in the memory area starting with the start address;

②When the system is initialized, according to the number of MAPs, the starting address of each MAP in the calibration FLASH is sequentially obtained from the information FLASH, and then each MAP pointer in step ① points to the starting address of each MAP in the calibration FLASH. origin address;

If you need to modify the MAP data, go to step 6);

If the MAP data needs to be queried, go to step 7).

In the embodiment of the present invention, as shown in Figure 2, after the system is initialized, the addresses pointed to by the MAP pointers are successively: the MAP0 pointer points to 0x140000, the MAP1 pointer points to 0x140100, the MAP2 pointer points to 0x140200, the MAP3 pointer points to 0x140300, and the MAP4 pointer points to 0x140400, The MAP5 pointer points to 0x140500.

6) During the online calibration process, copy the MAP being calibrated from the FLASH in the microcontroller to the RAM in the microcontroller, and modify the corresponding data in the RAM, including the following steps:

① After the calibration tool software on the PC is connected to the single-chip microcomputer system, modify a data in a MAP in the calibration tool software. At this time, the calibration tool software calculates the address offset of the data point relative to the starting address of the MAP, Then according to the starting address of the MAP in the calibration FLASH, further determine the storage address of the data point in the calibration FLASH, and the calibration tool software sends the address and the modified data to the single-chip microcomputer;

In the embodiment of the present invention, assuming that a data point in MAP2 is modified, the calibration tool software calculates that the address offset of this point relative to the MAP start address is 0x10, because MAP2 is stored in the memory starting at address 0x140200 in the calibration FLASH area, and the modified data is 0x66, then the calibration tool software sends 0x140210 and 0x66 to the microcontroller;

② According to the address sent by the calibration tool software in step ①, the single-chip microcomputer queries the MAP index number stored in the corresponding address in the index FLASH, and then according to the index number, accesses the element with the index number in the structure array in the information FLASH , and then get the starting address and occupied space of the MAP in the calibrated FLASH;

In the embodiment of the present invention, according to the received address 0x140210, the single-chip microcomputer queries the MAP index serial number stored in the index FLASH address 0x160210, and the index serial number is 2. According to the index serial number, the subscript in the structure array in the access information FLASH is 2 elements, and then get the starting address 0x140200 of MAP2 in the calibrated FLASH, occupying a space size of 0x100;

③ According to the MAP index serial number obtained in step ②, the MCU queries the corresponding MAP pointer to obtain the address currently pointed to by the MAP pointer:

If the address is in the calibrated FLASH, go to step ④;

If the address is located in the calibration RAM, go to step ⑤;

④According to the starting address and occupied space obtained in step ②, the MCU will start with the starting address in the calibrated FLASH, and copy all the data in the corresponding space size to the blank area of the calibrated RAM; use an integer 32-bit variable to record the size of the space used in the currently calibrated RAM area; then modify the pointer of the MAP to point to the initial address of the MAP storage space in the calibrated RAM area, and enter step ⑤;

⑤The storage address of the data point to be modified in the calibration FLASH is known, and the single-chip microcomputer obtains the address of the data point in the calibration RAM according to the start address of the MAP where the data point is located in the calibration FLASH and the start address in the calibration RAM. Store the address, and modify the data in the address to the updated data.

In the embodiment of the present invention, the pointer of the current MAP2 points to the address 0x140200, which is located in the calibrated FLASH, and the single-chip microcomputer copies all the data of 0x100 bytes in the calibrated FLASH address 0x140200～0x1402FF to the area of the calibrated RAM address 0x400000～0x4001FF; Set an integer 32-bit variable with a value of 0x100, indicating that the space of 0x100 bytes has been used in the calibration RAM area; then modify the MAP2 pointer to make it point to 0x400000 (as shown in Figure 3); it is known that it needs to be modified The storage address of the data point in the calibration FLASH is 0x140210, and the single-chip microcomputer obtains the storage of the data point to be modified in the calibration RAM according to the starting address 0x140200 of the MAP where the point is located in the calibration FLASH and the starting address 0x400000 in the calibration RAM address 0x400010, and then modify the data stored in address 0x400010 to 0x66. If after the above calibration is completed, another data point in MAP2 is modified in the calibration tool software, assuming that the storage address of the data point to be modified this time in the calibration FLASH is 0x140220, and the modified data is 0x55, then the calibration tool The software sends 0x140220 and 0x55 to the single-chip microcomputer; the single-chip microcomputer queries the MAP index number stored in the address 0x160220 in the index FLASH according to the received address 0x140220, and the index number is 2. The element marked as 2, and then get the starting address of MAP2 in the calibrated FLASH 0x140200, and the occupied space size is 0x100; query the MAP2 pointer, since the pointer has pointed to the address 0x400000, which is located in the calibrated RAM, it indicates that all the MAP has been set before The data is copied from the calibrated FLASH to the calibrated RAM, so there is no need to copy the original data this time; it is known that the storage address of the data point that needs to be modified is 0x140220 in the calibrated FLASH. Start address 0x140200 and start address 0x400000 in the calibration RAM, get the storage address 0x400020 of the data point to be modified in the calibration RAM, and then modify the data stored in the address 0x400020 to 0x55.

7) Knowing the starting address and occupied space of the MAP in FLASH, by querying the corresponding MAP pointer, the starting address of the current storage space of the MAP is obtained, so as to start with the starting address, the memory of the corresponding space size The data in the area is used for table lookup and interpolation operations, including the following steps:

①The single-chip microcomputer passes the starting address of MAP in the calibrated FLASH as a parameter to the look-up table interpolation function;

② The table look-up interpolation function queries the MAP index serial number stored in the corresponding address in the index FLASH according to the starting address obtained by step ①;

3. the single-chip microcomputer queries the corresponding MAP pointer according to the MAP index serial number obtained by step 2., and obtains the starting address of the current storage space of the MAP;

④ Based on the starting address obtained in step ③, perform a lookup table interpolation operation on the data in the memory area of the corresponding space size, and end.

In the embodiment of the present invention, if the look-up table interpolation operation is performed on MAP2, the starting address 0x140200 and the occupied space size of MAP2 in FLASH are known to be 0x100. Table lookup interpolation function, according to the start address, the lookup table interpolation function queries the MAP index serial number stored in the address 0x160200 in the index FLASH, and obtains the serial number as 2, thus knowing that MAP2 needs to be operated, and querying the MAP2 pointer , it is obtained that the MAP is currently located in the memory area starting from address 0x400000, and the table look-up interpolation operation is performed on the MAP data in the memory area starting from address 0x400000 and having a size of 0x100. If the table lookup interpolation operation is performed on MAP1, the starting address of MAP1 in FLASH is 0x140100 and the occupied space size is 0x100. The table interpolation function queries the MAP index number stored in 0x140100 in the index FLASH according to the start address, and obtains that the index number is 1, thus knowing that the operation needs to be performed is MAP1, querying the MAP1 pointer, and obtaining that the MAP is currently located at In the memory area starting with address 0x140100, perform a table look-up interpolation operation on the MAP data in the memory area with address 0x140100 and size 0x100.

The above-described embodiments are only used to illustrate the present invention, and the specific implementation manners of each step etc. all can be changed to some extent, and all equivalent transformations and improvements carried out on the basis of the technical solutions of the present invention should not be excluded from the scope of the present invention. outside the scope of protection.

Claims (5)

1. a single-chip system MAP data calibration method is characterized in that: it may further comprise the steps: 1) Set up several areas in the microcontroller memory, including the following steps: ① Set a memory area according to the total amount of data in the MAP as the calibration FLASH; ② Set a memory area according to the size of the MAP data that can be calibrated at one time, as the calibration RAM; ③ Set a memory area according to the number of MAPs as the information FLASH; ④ Set a memory area according to the total amount of data in the MAP as the index FLASH; 2) Save the original data of all MAPs in the calibrated FLASH area set by step 1); 3) Obtain the starting address and occupied space of each MAP stored in the calibration FLASH through the existing MAP storage analysis software, and save them in the information FLASH area set by step 1); 4) Obtain the index number of the MAP stored in each byte in the calibration FLASH area through the existing MAP storage analysis software, and save it in the index FLASH area set by step 1); 5) When the system is initialized, create and initialize a MAP pointer array, including the following steps: ① In the MAP management module, set a pointer array, the subscript of the array element is the index number of the MAP, the number of the array elements is the same as the number of the MAP, and the array element is a pointer, pointing to the starting point of the storage space of the MAP in the memory origin address; ②When the system is initialized, according to the number of MAPs, the starting address of each MAP in the calibration FLASH is sequentially obtained from the information FLASH, and then each MAP pointer in step ① points to the starting address of each MAP in the calibration FLASH. origin address; If you need to modify the MAP data, go to step 6); If you need to query the MAP data, go to step 7); 6) During the online calibration process, copy the MAP being calibrated from the FLASH in the microcontroller to the RAM in the microcontroller, and modify the corresponding data in the RAM, including the following steps: ① After the calibration tool software on the PC is connected to the single-chip microcomputer system, modify a data in a MAP in the calibration tool software. At this time, the calibration tool software calculates the address offset of the data point relative to the starting address of the MAP, Then according to the starting address of the MAP in the calibration FLASH, further determine the address of the data point stored in the calibration FLASH, and the calibration tool software sends the address and the modified data to the single-chip microcomputer; ② According to the address sent by the calibration tool software in step ①, the single-chip microcomputer queries the MAP index number stored in the corresponding address in the index FLASH, and then according to the index number, accesses the element with the index number in the structure array in the information FLASH , and then get the starting address and occupied space of the MAP in the calibrated FLASH; ③ According to the MAP index serial number obtained in step ②, the MCU queries the corresponding MAP pointer to obtain the address currently pointed to by the MAP pointer: If the address is in the calibrated FLASH, go to step ④; If the address is located in the calibration RAM, go to step ⑤; ④According to the starting address and occupied space obtained in step ②, the microcontroller will be located in the calibrated FLASH starting with the starting address, and all the data in the corresponding space size will be copied to the blank area of the calibrated RAM; record the current calibrated RAM area The size of the space used; then modify the pointer of the MAP to point to the starting address of the MAP storage space in the marked RAM area, and enter step 5; ⑤The storage address of the data point to be modified in the calibration FLASH is known, and the single-chip microcomputer obtains the address of the data point in the calibration RAM according to the start address of the MAP where the data point is located in the calibration FLASH and the start address in the calibration RAM. Store the address, modify the data in the address to the updated data; 7) Knowing the starting address and space occupied by the MAP in FLASH, by querying the corresponding MAP pointer, the starting address of the current storage space of the MAP is obtained, so as to start with the starting address, the memory of the corresponding space size The data in the area is used for table lookup and interpolation operations, including the following steps: ①The single-chip microcomputer passes the starting address of MAP in the calibrated FLASH as a parameter to the look-up table interpolation function; ② The table look-up interpolation function queries the MAP index serial number stored in the corresponding address in the index FLASH according to the starting address obtained by step ①; 3. the single-chip microcomputer queries the corresponding MAP pointer according to the MAP index serial number obtained by step 2., and obtains the starting address of the current storage space of the MAP; ④ Based on the starting address obtained in step ③, perform a lookup table interpolation operation on the data in the memory area of the corresponding space size, and end. 2. A single-chip microcomputer system MAP data calibration method according to claim 1, characterized in that: in the step 4), in the index FLASH, each byte stores an index number. 3. A single-chip system MAP data calibration method as claimed in claim 1, characterized in that: in said step 4), when the number of MAPs is greater than 255, an index is stored every two bytes in the index FLASH serial number. 4. A single-chip system MAP data calibration method as claimed in claim 2, characterized in that: in said step 4), when the number of MAPs is greater than 255, an index is stored every two bytes in the index FLASH serial number. 5. A single-chip system MAP data calibration method as claimed in any one of claims 1 or 2 or 3 or 4, characterized in that: in the step 3), a structure array is used to store the starting address of each MAP and the size of the occupied space; the subscript of the array element is the index number of the MAP, the number of the array elements is the same as the number of the MAP, and the array element is a structure, including two members: the size of the MAP occupied space and the MAP within the calibrated FLASH The starting address of .

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