CN111897758A - MCU master-slave application control optical sensor device with two modes - Google Patents
MCU master-slave application control optical sensor device with two modes Download PDFInfo
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- CN111897758A CN111897758A CN201910366378.6A CN201910366378A CN111897758A CN 111897758 A CN111897758 A CN 111897758A CN 201910366378 A CN201910366378 A CN 201910366378A CN 111897758 A CN111897758 A CN 111897758A
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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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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/76—Architectures of general purpose stored program computers
- G06F15/78—Architectures of general purpose stored program computers comprising a single central processing unit
- G06F15/7839—Architectures of general purpose stored program computers comprising a single central processing unit with memory
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/22—Microcontrol or microprogram arrangements
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Abstract
A kind of MCU master slave application with two modes controls the optical sensor device, imbed the small-scale Microcontroller (MCU) in the optical sensor chip, merge the dual CPU framework of the original master slave dual mode into the single CPU framework to operate, and design according to the original circuit foot, therefore can be compatible with the design mode of the old circuit. The invention can make the optical sensor directly controlled by the microcontroller by a single CPU framework, and can reset from an internal integrated circuit (I2C I/F) bus to an internal non-volatile memory through the configuration of a random access memory, so that the operation mode of the optical sensor is switched from a slave machine device to a host machine device, an interrupt pin is closed, and then the operation mode is converted into a GPIO pin. Therefore, the single CPU provided by the invention has simple structure, easy use and effectively reduced cost.
Description
Technical Field
The present invention relates to an optical sensor device with two modes of MCU master-slave application control, and more particularly, to an optical sensor operation mode, and more particularly, to an optical sensor device in which a Micro Controller Unit (MCU) is embedded in an optical sensor chip and an optical sensor is controlled by the MCU.
Background
Light sensors (Light sensors) are sensors that use Light sensitive elements to convert Light signals into telecommunication signals. The optical sensor generally comprises a set of light projector and light receiver, wherein the light projector focuses light through a lens, transmits the light to the lens of the light receiver, and then transmits the light to the receiving sensor. The sensor converts the received light signal into a telecommunication signal, which can be further used for various switching and control actions. In other words, the basic principle of the optical sensor is to use the light between the light projector and the light receiver to change the obtained signal, so as to accomplish various kinds of automation control. The optical sensor is used to replace the contact detection method such as limit switch, and any sensor that performs detection without contacting the detection object is generally called proximity sensor. The principle is to convert the movement information or the existence information of the detection object into an electrical signal.
Up to now, the light sensor operation mode is still enabled/disabled by the microcontroller; that is, its operation always needs to be woken up by the microcontroller, and thus the overall major cost is expensive. As shown in fig. 3, the master/slave architecture uses dual CPUs to control the slave optical sensors via Inter-Integrated Circuit (I2C) protocol. This prior art has a CPU 31 of the host 3 and a microcontroller 41 of the slave 4, where the CPU 31 of the host 3 is the CPU for controlling the internal photosensor 32, and the microcontroller 41 of the slave 4 is the CPU for controlling the external configuration adjustment, thereby forming a dual-CPU control mode. However, the conventional configuration adjustment of the microcontroller 41 is not used to control the light sensor 32, but uses the cpu 31 of the host 3 to control the light sensor 32.
In view of the problems of the prior art, it is necessary to develop a less expensive sensor structure to save object list (BOM).
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned problems encountered in the prior art, and providing an MCU master-slave application control optical sensor device having two modes, in which a small-sized microcontroller is embedded in an optical sensor chip, and the original master-slave dual-mode dual-CPU architecture is merged into a single-CPU architecture for operation, and is designed according to the original circuit pin, so that the device is compatible with the old circuit design mode.
A secondary objective of the present invention is to provide a single CPU architecture, which can directly control the optical sensor by the microcontroller, and through the configuration of the random access memory, the optical sensor can be reset from the internal integrated circuit bus to the internal non-volatile memory, so that the operation mode of the optical sensor is switched from the slave device to the host device, the interrupt pin is closed, and then the interrupt pin is switched to the GPIO pin, thereby the single CPU architecture has the advantages of simple architecture, easy use, and effectively reduced cost.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: an optical sensor device with two modes of MCU master-slave application control, comprising: a light sensor area provided with a plurality of light sensors; an Analog Front End (AFE) circuit electrically connected to the optical sensor region for performing photoelectric conversion and Analog trimming on parameters of the optical sensors; a microcontroller electrically connected to the analog front-end circuit, the microcontroller being a software State machine (State machine) having a first memory and an I/O communication interface, respectively, and storing a program of the software State machine by the first memory; an ARB (ARB) electrically connected to the microcontroller for receiving the micro instructions associated with the respective memories, for selecting and processing the sequence of the micro instructions according to an Arbitration procedure, and for enabling a processed micro instruction to establish access to the memory portion and address specified by the micro instruction; a second memory electrically connected to the memory arbiter for storing a function (Functional) photo sensor control setting value; an inter-integrated circuit (I2C I/F) bus electrically connected to the memory arbiter, the inter-integrated circuit bus being a communication interface for connecting to an external device, the inter-integrated circuit bus having a register, all operation settings being stored in the second memory and the register; a third memory, which is built with a Trim (Trim) value for the microcontroller to control the analog front-end circuit to Trim the AFE Trim parameter data of the optical sensors; a fourth memory configured as a Single bit unit memory, and configured to set data recorded in a Single bit form by the operations, so as to determine to perform a slave mode or a Single chip mode; and a memory interface circuit electrically connected to the memory arbiter, the third memory and the fourth memory, for generating a memory channel address based on the micro-command processed by the memory arbiter to access the third memory and the fourth memory; forming a light sensor chip by the above-mentioned component, reading the third memory and the fourth memory continuously and storing them in the second memory, the microcontroller will obtain the read data from the third memory and the fourth memory and check the Single bit state, when the Single bit state is 0, the read data from the fourth memory can not replace the set value controlled by the Functional light sensor in the second memory, making the operation mode of the light sensor chip enter the slave mode to become the slave end, the I/O communication interface will be used as INT interface, and the external device connected with the internal integrated circuit bus becomes the host end, waiting for the actuation command of the external device through the internal integrated circuit bus to control the light sensors; when the Single bit state is 1, the read data from the fourth memory can replace the set value controlled by the Functional optical sensor in the second memory, so that the operation mode of the optical sensor chip enters a Single chip mode, the second memory is arranged to reset from the internal integrated circuit bus to the third memory and the fourth memory, the optical sensors are controlled by the microcontroller, and the I/O communication interface is switched from an INT interface of a slave mode to a GPIO interface.
In the above embodiments of the present invention, the Light sensors are an Ambient Light Sensor (ALS) and a Proximity Sensor (PS).
In the above embodiments of the present invention, the first Memory is a Read-Only Memory (ROM), the second Memory is a Random Access Memory (RAM), the third Memory is a Trim non-volatile Memory (Trim non-volatile Memory), and the fourth Memory is a SetUp non-volatile Memory (SetUp non-volatile Memory).
In the above embodiments of the present invention, the setting value is the photo sensor calibration and control register setting.
In the above embodiment of the present invention, each of the photosensor chips is a default slave mode at a test before Factory (FT) stage, the Trim value recorded after FT exists in the third memory is only corrected (Calibration) for the photosensors, and if the Single bit of the fourth memory is not recorded and the state is 0, the readout data from the fourth memory cannot replace the set value controlled by the Functional photosensor in the second memory to enter the slave mode when the computer is turned on; when the end user writes the Single bit to make the state 1, when the computer is started, the read data from the fourth memory can replace the set value controlled by the Functional optical sensor in the second memory to enter the Single chip mode, and the second memory is set to reset from the internal integrated circuit bus to the third memory and the fourth memory.
In the above embodiment of the present invention, the user can verify the optimal setting value controlled by the optical sensor in the slave mode, and then write the setting value through the internal integrated circuit bus, so as to write the Single bit to make the state 1.
In the above embodiments of the present invention, the INT interface is switched to a GPIO interface and can be reset to output an OBJ status bit.
In the above embodiments of the present invention, the inter-integrated circuit bus includes an SDA/SCL interface, which is no longer used when in single chip mode and needs to be connected to VDD.
In the above embodiments of the present invention, the internal integrated circuit bus includes a SEL interface, which is released to be used or removed as a GPIO interface when the single chip mode is performed.
Drawings
FIG. 1 is a schematic diagram of the device architecture of the present invention.
FIG. 2 is a schematic flow diagram of the operation of the apparatus of the present invention.
Fig. 3 is a schematic diagram of a known host controlling a slave light sensor mode through an I2C protocol.
Reference numbers refer to:
Light sensor area 11
Analog front-end circuit 12
Read only memory 131
I/O communication interface 132
Inter-integrated circuit bus 16
SDA/SCL interface 162
Trim non-volatile memory 17
Setup non-volatile memory 18
Memory interface circuit 19
External device 2
Steps s 11-s 22
Host 3
Slave machine 4
A microcontroller 41.
Detailed Description
Please refer to fig. 1 and fig. 2, which are a schematic diagram of a device architecture and a schematic diagram of an operation flow of the device according to the present invention, respectively. As shown in the figure: the invention relates to an MCU master-slave application control optical sensor device with two modes, which comprises an optical sensor region 11, an Analog Front End (AFE) 12, a Microcontroller (MCU) 13, a Memory Arbiter (ARB) 14, a Random Access Memory (RAM) 15, an internal integrated circuit (I2C I/F) bus 16, a Trim non-volatile Memory (Trim non-volatile Memory) 17, a Trim non-volatile Memory (Trim non-volatile Memory) 18 and a Memory interface circuit 19.
The Light Sensor area 11 mentioned above is provided with a plurality of Light sensors (Light sensors) 111, 112, including an Ambient Light Sensor (ALS) and a Proximity Sensor (PS).
The analog front end circuit 12 is electrically connected to the optical sensors 111 and 112 in the optical sensor area 11 for performing photoelectric conversion and analog modification on parameters of the optical sensors 111 and 112.
The microcontroller 13 is electrically connected to the analog front-end circuit 12, the microcontroller 13 is a software state machine (statechip), and has a Read-Only Memory (ROM) 131 and an I/O communication interface 132, respectively, and the ROM 131 stores programs of the software state machine.
The memory arbiter 14 is electrically connected to the microcontroller 13 for receiving the micro instructions associated with the respective memories and for selecting and processing the micro instructions according to an arbitration procedure, so that a processed micro instruction establishes access to the memory portion and address specified by the micro instruction.
The ram 15 is electrically connected to the memory arbiter 14, and stores a function (Functional) photosensor control setting, which is a photosensor calibration and control register setting.
The inter-integrated circuit bus 16 is electrically connected to the memory arbiter 14, the inter-integrated circuit bus 16 is a communication interface for connecting to an external device 2, the inter-integrated circuit bus 16 has a register 161, and all operation settings are stored in the random access memory 15 and the register 161. The inter-integrated circuit bus includes an SDA/SCL interface 162 and an SEL interface 163.
The Trim nonvolatile memory 17 has a Trim (Trim) value built therein for the micro-controller 13 to control the analog front end circuit 12 to Trim the AFE Trim parameter data of the optical sensors 111, 112.
The SetUp nonvolatile memory 18 is configured as a Single bit cell memory, and data recorded in a Single bit form is set by the operations to determine whether to perform the slave mode or the Single chip mode.
The memory interface circuit 19 is electrically connected to the memory arbiter 14, the Trim non-volatile memory 17, and the SetUp non-volatile memory 18, and is configured to generate a memory channel address based on the micro instruction processed by the memory arbiter 14 to access the Trim non-volatile memory 17 and the SetUp non-volatile memory 18; a photosensor chip 1 is formed by the above-described constituent elements. Thus, the structure disclosed above constitutes a new MCU master-slave application control optical sensor with two modes.
When the method is used, each photosensor chip 1 in the test (FT) stage before factory shipment is a default slave mode, the Trim nonvolatile memory 17 corrects (Calibration) the Trim value written after FT only for the photosensors 111 and 112, and if the Single bit of the SetUp nonvolatile memory 18 is not written and the state is 0, the read data from the SetUp nonvolatile memory 18 cannot replace the setting value controlled by the Functional photosensor in the random access memory 15 and enter the slave mode when the computer is turned on. Finally, the user writes the Single bit to make the state 1, and when the computer is started, the read data from the SetUp non-volatile memory 18 can replace the set value controlled by the Functional optical sensor in the random access memory 15 to enter the Single chip mode, and the I/O communication interface 132 switches the INT interface of the slave mode to the GPIO interface, which can be reset to output the OBJ state bit. Also, the SDA/SCL interface 162 of the inter-IC bus 16 is no longer used, requiring a connection to VDD 3.3V, and the SEL interface 163 may also be released for GPIO interface use or removal. In addition, the user can verify the optimal setting value controlled by the optical sensor in the random access memory 15 by the slave mode, and then write the setting value through the internal integrated circuit bus 16 to write the Single bit to 1, so that the state is 1.
The following examples are given by way of illustration only to understand the details and the content of the present invention, and are not intended to limit the scope of the present invention.
As shown in fig. 2, the operation mode of the smart sensor with the optical sensor chip 1 of the present invention is as step s11, by continuously reading Trim nonvolatile memory 17 and SetUp nonvolatile memory 18 and storing them into the random access memory 15 as steps s12 and s13, the microcontroller 13 will obtain the read data from Trim nonvolatile memory 17 and SetUp nonvolatile memory 18 and check the Single bit state as step s14, when the Single bit state is 0, the read data from SetUp nonvolatile memory 18 cannot replace the set value controlled by the Functional optical sensor in the random access memory 15, the operation mode of the optical sensor chip 1 is entered into the slave mode as step s15 to become the slave, the I/O communication interface 132 will be used as the INT interface, the external device 2 connected to the internal integrated circuit bus 16 will become the host, and the internal integrated circuit bus 16 waits for the actuation command of the external device 2 to control the optical sensor chips as step s15, so as to control the optical sensor chips And (e) devices 111, 112. In step s16, the host configures the random access memory 15, and then boots up according to the host command in step s17, and listens for the host command in step s 18. When the Single bit state is 1, the operation mode of the optical sensor chip 1 is entered into the Single chip mode (step s 19), the operation mode of the optical sensor is switched from the slave device to the host device, the read data from the SetUp nonvolatile memory 18 can replace the setting value of the Functional optical sensor control in the random access memory 15, so that the optical sensor can load the exclusive control setting (step s 20), after the smart sensor is restarted, the optical sensor chip 1 automatically starts the setting of the random access memory 15 and permanently executes the steps s21 and s22, resets the internal integrated circuit bus 16 to the Trim nonvolatile memory 17 and the SetUp nonvolatile memory 18, controls the optical sensors 111 and 112 by the microcontroller 3, closes the interrupt pin, and switches the I/O communication interface 132 from the INT interface of the slave mode to the GPIO interface.
The invention embeds the micro-controller into the optical sensor chip, combines the original dual-CPU framework of master-slave dual-mode into the single-CPU framework for operation, and designs according to the original circuit pin position, thus being compatible with the design mode of the old circuit. The invention can make the optical sensor directly controlled by the microcontroller by a single CPU framework, and can reset to the internal non-volatile memory from the internal integrated circuit bus through the configuration of the optical sensor control buffer, so that the operation mode of the optical sensor is switched from the slave machine device to the host machine device, the interrupt pin is closed, and then the optical sensor is converted into the GPIO pin. Therefore, the single CPU provided by the invention has simple structure, easy use and effectively reduced cost.
In summary, the present invention provides an optical sensor device controlled by MCU master/slave application with two modes, can effectively overcome various defects of the prior art, embeds a small microcontroller into an optical sensor chip, combines the original master-slave dual-mode dual-CPU architecture into a single-CPU architecture for operation, and is designed according to the original circuit pins, so that the single CPU architecture can make the optical sensor directly controlled by the microcontroller, through the configuration of the optical sensor control buffer, the operation mode of the optical sensor can be switched from the slave machine equipment to the host machine equipment from the internal integrated circuit bus reset to the internal non-volatile memory, thereby the proposed device has the advantages of simple structure, easy operation, and effectively reduced cost, further, the present invention can be made more advanced, more practical, and more suitable for the needs of users, and the requirements of the patent application are met, so as to provide patent application according to law.
However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby. Therefore, all the equivalent changes and modifications made according to the claims and the content of the specification of the present invention should be covered by the scope of the present invention.
Claims (9)
1. An MCU master-slave application control optical sensor device with two modes, characterized in that it comprises:
a photosensor region provided with a plurality of photosensors;
the analog front-end circuit is electrically connected with the optical sensor area and used for carrying out photoelectric conversion and analog modification on parameters of the optical sensors;
the microcontroller is a software state machine, is respectively provided with a first memory and an I/O communication interface, and stores a program of the software state machine by the first memory;
a memory arbiter electrically connected to the microcontroller for receiving the micro-instructions associated with the respective memories, and for selecting and processing the micro-instructions according to an arbitration procedure, so that a processed micro-instruction establishes access to the memory portion and address specified by the micro-instruction;
the second memory is electrically connected with the memory arbiter and stores a function type light sensor control set value;
an internal integrated circuit bus electrically connected with the memory arbiter, wherein the internal integrated circuit bus is a communication interface for connecting an external device, the internal integrated circuit bus is provided with a buffer, and all operation settings can be stored in the second memory and the buffer;
a third memory, which is provided with a trimming value and is used as the AFE trimming parameter data of the optical sensors for the microcontroller to control the analog front-end circuit to trim;
a fourth memory configured as a unit cell memory and set to record data of a Single bit form by the operations to determine to perform a slave mode or a Single chip mode; and
a memory interface circuit electrically connected to the memory arbiter, the third memory and the fourth memory for generating a memory channel address based on the micro-command processed by the memory arbiter to access the third memory and the fourth memory;
forming a light sensor chip by the above-mentioned components, reading the third memory and the fourth memory continuously and storing them in the second memory, the microcontroller will obtain the read data from the third memory and the fourth memory and check the Single bit state, when the Single bit state is 0, the read data from the fourth memory can not replace the set value controlled by the Functional light sensor in the second memory, making the operation mode of the light sensor chip enter the slave mode to become the slave end, the I/O communication interface will be used as INT interface, and the external device connected with the internal integrated circuit bus becomes the host end, waiting for the actuation command of the external device through the internal integrated circuit bus to control the light sensors; when the Single bit state is 1, the read data from the fourth memory can replace the set value controlled by the Functional optical sensor in the second memory, so that the operation mode of the optical sensor chip enters a Single chip mode, the second memory is arranged to reset from the internal integrated circuit bus to the third memory and the fourth memory, the optical sensors are controlled by the microcontroller, and the I/O communication interface is switched from an INT interface of a slave mode to a GPIO interface.
2. The two-mode MCU master-slave application controlled light sensor device of claim 1, wherein the light sensor is an ambient light sensor and a proximity sensor.
3. The device of claim 1, wherein the first memory is a read-only memory, the second memory is a random access memory, the third memory is a Trim non-volatile memory, and the fourth memory is a SetUp non-volatile memory.
4. The device of claim 1, wherein the setting is a photosensor calibration and control register setting.
5. The device of claim 1, wherein each of the photosensor chips is in a default slave mode at a pre-factory testing stage, the Trim value written after FT exists in the third memory is only corrected for the photosensors, and if a Single bit in the fourth memory is not written and the state is 0, the readout data from the fourth memory cannot replace a setting value controlled by a Functional photosensor in the second memory and enter the slave mode when the device is powered on; when the end user writes the Single bit to make the state 1, when the computer is started, the read data from the fourth memory can replace the set value controlled by the Functional optical sensor in the second memory to enter the Single chip mode, and the second memory is set to reset from the internal integrated circuit bus to the third memory and the fourth memory.
6. The device of claim 5, wherein the user verifies the optimal set value of the photosensor control with the slave mode, and writes the set value into the Single bit by the internal integrated circuit bus, so that the state of the Single bit is 1.
7. The two-mode MCU master-slave application controlled light sensor device of claim 1, wherein said INT interface is switched to a GPIO interface that can be reset to output an OBJ status bit.
8. The two-mode MCU master-slave application controlled light sensor device of claim 1, wherein said inter-integrated circuit bus comprises an SDA/SCL interface that will not be used when in single-chip mode, requiring a connection to VDD.
9. The two-mode MCU master-slave application controlled light sensor device of claim 1, wherein the internal integrated circuit bus comprises a SEL interface that is released for GPIO interface use or removal when in single chip mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910366378.6A CN111897758A (en) | 2019-05-05 | 2019-05-05 | MCU master-slave application control optical sensor device with two modes |
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| CN201910366378.6A CN111897758A (en) | 2019-05-05 | 2019-05-05 | MCU master-slave application control optical sensor device with two modes |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080040598A1 (en) * | 1999-08-04 | 2008-02-14 | Super Talent Electronics Inc. | Flash micro-controller with shadow boot-loader SRAM for dual-device booting of micro-controller and host |
| US20080256352A1 (en) * | 2000-01-06 | 2008-10-16 | Super Talent Electronics, Inc. | Methods and systems of booting of an intelligent non-volatile memory microcontroller from various sources |
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2019
- 2019-05-05 CN CN201910366378.6A patent/CN111897758A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080040598A1 (en) * | 1999-08-04 | 2008-02-14 | Super Talent Electronics Inc. | Flash micro-controller with shadow boot-loader SRAM for dual-device booting of micro-controller and host |
| US20080256352A1 (en) * | 2000-01-06 | 2008-10-16 | Super Talent Electronics, Inc. | Methods and systems of booting of an intelligent non-volatile memory microcontroller from various sources |
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Effective date of registration: 20201231 Address after: 8th floor, 233-2 Baoqiao Road, Xindian District, Xinbei City, Taiwan, China Applicant after: DYNA IMAGE Corp. Applicant after: LITE-ON SEMICONDUCTOR CORPORATION Address before: 10F, No.205, section 3, Beixin Road, Xindian District, Xinbei City, Taiwan, China Applicant before: DYNA IMAGE Corp. |
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Application publication date: 20201106 |