CN110908861A - External multi-signal-source monitoring processing method based on DSP - Google Patents
External multi-signal-source monitoring processing method based on DSP Download PDFInfo
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- CN110908861A CN110908861A CN201911047314.6A CN201911047314A CN110908861A CN 110908861 A CN110908861 A CN 110908861A CN 201911047314 A CN201911047314 A CN 201911047314A CN 110908861 A CN110908861 A CN 110908861A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/30—Monitoring
- G06F11/3003—Monitoring arrangements specially adapted to the computing system or computing system component being monitored
- G06F11/3027—Monitoring arrangements specially adapted to the computing system or computing system component being monitored where the computing system component is a bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The invention discloses an external multi-signal-source monitoring processing method based on a DSP (digital signal processor), which comprises a main control DSP chip and a serial port expansion chip connected with the main control DSP chip; the method comprises the following steps: 1) after the main control DSP chip is powered on, carrying out power-on RESET on a RESET pin of the serial port extension chip; 2) initializing four channels of the serial port expansion chip through a bus controller; 3) setting corresponding baud rates and FIFO (first in first out) trigger depths for four channels of the serial port expansion chip according to actual requirements and enabling receiving; 4) the main control DSP chip monitors and inquires level change of a XINT1 pin in a main program, if the level changes from high to low, a corresponding register in the serial port expansion chip is inquired through a bus controller, a trigger source of an external signal source is found, and data of a corresponding channel is received and processed; 5) and the rest two paths of data are received and processed through the original two serial communication interfaces. The present invention provides the master control chip with the capability of receiving and processing up to 6 external serial data sources simultaneously.
Description
Technical Field
The invention relates to digital signal processing, in particular to an external multi-signal-source monitoring processing method based on a DSP.
Background
The X-type electronic program controller has up to 6 external data sources and is a serial interface of RS 422A. At present, the main control chip JDSP320F2812 has only two serial controllers (SCIA and SCIB), and the multiplexing condition of the two serial ports has reached the limit. At the same time, the X-type electronic program controller can only receive two paths of data at the same time for monitoring and processing. The shortage of serial port resources brings great challenges to the data receiving and processing capacity, self-detection, maintenance and product testability coverage rate improvement of the program controller.
The capability of simultaneously receiving and processing data sources of the product becomes a short board for continuously improving the testability and the health management capability of the X-type rocket ejection seat. There is a strong need to solve the simultaneous receiving and processing capability of up to 6 external serial data sources, and to achieve data packet loss prevention and timely response.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide an external multi-signal-source monitoring processing method based on DSP, aiming at the defects in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a DSP-based external multi-signal-source monitoring processing method comprises a main control DSP chip and a serial port expansion chip connected with the main control DSP chip;
the method comprises the following steps:
1) after the master control DSP chip is powered on, a RESET pin of the serial port extension chip is powered on and RESET through a GPIOA12 port;
2) initializing four channels RXA, RXB, RXC and RXD of the serial port expansion chip through a bus controller;
3) setting corresponding baud rates and FIFO (first in first out) trigger depths for four channels of the serial port expansion chip according to actual requirements and enabling receiving;
4) after the initialization of the serial port expansion chip is finished, the main control DSP chip monitors and inquires the level change of an XINT1 pin in a main program, if the level changes from high to low, a corresponding register in the serial port expansion chip is inquired through a bus controller, a trigger source of an external signal source is found, and data of a corresponding channel is received and processed;
5) the remaining two paths of data pass through two serial communication interfaces of the DSP2812 itself: the SCIA and SCIB perform receive processing.
According to the scheme, the main control DSP chip is a DSP2812 chip, and the serial port expansion chip is a JXR16C854 chip.
According to the scheme, the connection between the main control DSP chip and the serial port expansion chip is as follows:
pins D0 to D7 of the master control DSP chip are correspondingly connected with pins D0 to D7 of the serial port expansion chip respectively;
a GPIOA12 port of the master control DSP chip is connected with a RESET pin of the serial port expansion chip;
an INTA pin and an INTB pin of the serial port expansion chip are input of a first OR gate, an INTC pin and an INTD pin of the serial port expansion chip are input of a second OR gate, output of the first OR gate and output of the second OR gate are input of a third OR gate, and output of the third OR gate is connected with XINT1 of the main control DSP chip;
the RD of the main control DSP chip is connected with the IOR # of the serial port expansion chip;
the WE of the main control DSP chip is connected with the IOW # of the serial port expansion chip;
pins A0 to A2 of the master control DSP chip are correspondingly connected with pins A0 to A2 of the serial port expansion chip respectively;
the A3 pin of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of the first NAND gate is connected with the CSC #, of the serial port expansion chip;
the A4 pin of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of a second NAND gate is connected with the CSD # of the serial port expansion chip;
the A5 pin of the main control DSP chip and the CS0 after NOT gate are used as the input of a first NAND gate, and the output of a third NAND gate is connected with the CSA # of the serial port expansion chip;
the pin A6 of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of a fourth NAND gate is connected with the CSB # of the serial port expansion chip.
According to the scheme, the main control DSP chip and the serial port expansion chip are communicated with an external data source through the 422 conversion chip.
The invention has the following beneficial effects: the invention solves the problem that two serial port main control chips have the capability of receiving and processing up to 6 external serial data sources simultaneously by the connection of the expansion chips, and realizes no packet loss and timely response of data.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A DSP-based external multi-signal-source monitoring processing method comprises a main control DSP chip and a serial port expansion chip connected with the main control DSP chip;
as shown in fig. 1, the connection between the master DSP2812 chip and the JXR16C854 chip is as follows:
pins D0 to D7 of the master control DSP chip are correspondingly connected with pins D0 to D7 of the serial port expansion chip respectively;
a GPIOA12 port of the master control DSP chip is connected with a RESET pin of the serial port expansion chip;
an INTA pin and an INTB pin of the serial port expansion chip are input of a first OR gate, an INTC pin and an INTD pin of the serial port expansion chip are input of a second OR gate, output of the first OR gate and output of the second OR gate are input of a third OR gate, and output of the third OR gate is connected with XINT1 of the main control DSP chip;
the RD of the main control DSP chip is connected with the IOR # of the serial port expansion chip;
the WE of the main control DSP chip is connected with the IOW # of the serial port expansion chip;
pins A0 to A2 of the master control DSP chip are correspondingly connected with pins A0 to A2 of the serial port expansion chip respectively;
the A3 pin of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of the first NAND gate is connected with the CSC #, of the serial port expansion chip;
the A4 pin of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of a second NAND gate is connected with the CSD # of the serial port expansion chip;
the A5 pin of the main control DSP chip and the CS0 after NOT gate are used as the input of a first NAND gate, and the output of a third NAND gate is connected with the CSA # of the serial port expansion chip;
the pin A6 of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of a fourth NAND gate is connected with the CSB # of the serial port expansion chip.
The multi-signal-source monitoring processing method comprises the following steps:
1) after the master control DSP chip is powered on, a RESET pin of the serial port extension chip is powered on and RESET through a GPIOA12 port;
2) initializing four channels RXA, RXB, RXC and RXD of the serial port expansion chip through a bus controller;
3) setting corresponding baud rates and FIFO (first in first out) trigger depths for four channels of the serial port expansion chip according to actual requirements and enabling receiving;
4) after the JXR16C854 is initialized, the DSP2812 monitors and inquires the level change of an XINT1 pin in a main program, if the level changes from high to low, a corresponding register in the JXR16C854 is inquired through a bus controller, a trigger source of an external signal source is found, and data of a corresponding channel is received and processed;
5) the remaining two paths of data pass through two serial communication interfaces of the DSP2812 itself: the SCIA and SCIB perform receive processing.
The two paths of data interfaces of the main control DSP chip and the serial port expansion chip are communicated with an external data source through a 422 conversion chip.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (4)
1. A DSP-based external multi-signal-source monitoring processing method comprises a main control DSP chip and a serial port expansion chip connected with the main control DSP chip; it is characterized in that the preparation method is characterized in that,
the method comprises the following steps:
1) after the master control DSP chip is powered on, a RESET pin of the serial port extension chip is powered on and RESET through a GPIOA12 port;
2) initializing four channels RXA, RXB, RXC and RXD of the serial port expansion chip through a bus controller;
3) setting corresponding baud rates and FIFO (first in first out) trigger depths for four channels of the serial port expansion chip according to actual requirements and enabling receiving;
4) after the initialization of the serial port expansion chip is finished, the main control DSP chip monitors and inquires the level change of an XINT1 pin in a main program, if the level changes from high to low, a corresponding register in the serial port expansion chip is inquired through a bus controller, a trigger source of an external signal source is found, and data of a corresponding channel is received and processed;
5) the remaining two paths of data pass through two serial communication interfaces of the main control DSP chip: the SCIA and SCIB perform receive processing.
2. The DSP-based external multi-signal-source monitoring processing method according to claim 1, wherein the master DSP chip is a DSP2812 chip, and the serial port expansion chip is a JXR16C854 chip.
3. The external multi-signal-source monitoring processing method based on the DSP according to claim 2, wherein the connection between the main control DSP chip and the serial port expansion chip is as follows:
pins D0 to D7 of the master control DSP chip are correspondingly connected with pins D0 to D7 of the serial port expansion chip respectively;
a GPIOA12 port of the master control DSP chip is connected with a RESET pin of the serial port expansion chip;
an INTA pin and an INTB pin of the serial port expansion chip are input of a first OR gate, an INTC pin and an INTD pin of the serial port expansion chip are input of a second OR gate, output of the first OR gate and output of the second OR gate are input of a third OR gate, and output of the third OR gate is connected with XINT1 of the main control DSP chip;
the RD of the main control DSP chip is connected with the IOR # of the serial port expansion chip;
the WE of the main control DSP chip is connected with the IOW # of the serial port expansion chip;
pins A0 to A2 of the master control DSP chip are correspondingly connected with pins A0 to A2 of the serial port expansion chip respectively;
the A3 pin of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of the first NAND gate is connected with the CSC #, of the serial port expansion chip;
the A4 pin of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of a second NAND gate is connected with the CSD # of the serial port expansion chip;
the A5 pin of the main control DSP chip and the CS0 after NOT gate are used as the input of a first NAND gate, and the output of a third NAND gate is connected with the CSA # of the serial port expansion chip;
the pin A6 of the main control DSP chip and the CS0 after the NOT gate are used as the input of a first NAND gate, and the output of a fourth NAND gate is connected with the CSB # of the serial port expansion chip.
4. The external multi-signal-source monitoring processing method based on the DSP according to claim 1, wherein the main control DSP chip and the serial port expansion chip are both in communication with an external data source through a 422 conversion chip.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060095616A1 (en) * | 1998-08-06 | 2006-05-04 | Ahern Frank W | Computing module with serial data conectivity |
| CN107291647A (en) * | 2017-05-19 | 2017-10-24 | 中国科学院长春光学精密机械与物理研究所 | The method that DSP reads receiving channel data in extended serial port |
| CN109656850A (en) * | 2018-11-13 | 2019-04-19 | 河北汉光重工有限责任公司 | The DSP serial communication circuit extended using single CPLD |
-
2019
- 2019-10-30 CN CN201911047314.6A patent/CN110908861A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060095616A1 (en) * | 1998-08-06 | 2006-05-04 | Ahern Frank W | Computing module with serial data conectivity |
| CN107291647A (en) * | 2017-05-19 | 2017-10-24 | 中国科学院长春光学精密机械与物理研究所 | The method that DSP reads receiving channel data in extended serial port |
| CN109656850A (en) * | 2018-11-13 | 2019-04-19 | 河北汉光重工有限责任公司 | The DSP serial communication circuit extended using single CPLD |
Non-Patent Citations (1)
| Title |
|---|
| 梅培智等: "基于TL16C754B的TMS320F2812异步串行通信扩展" * |
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