CN103051736B - A kind of processing method of control information and I2C bus apparatus - Google Patents

Abstract

The embodiment of the present invention discloses a method for processing control information and an I2C bus device, wherein the method includes: the I2C bus device obtains the device address carried in the control information from the control information sent by the I2C bus master on the I2C bus, and the I2C bus device includes: There are two device addresses: the first device address and the second device address; if the device address carried by the control information is the same as the first device address, the I2C bus device configures the I/O port of the touch key control chip as input control, so that The touch button control chip collects and controls the input data according to the control information; if the device address carried by the control information is the same as the address of the second device, the I2C bus device configures the I/O port of the touch button control chip as output control, so that the touch button The control chip controls and operates the driven device connected to the touch button control chip according to the control information.

Description

A processing method of control information and I2C bus device

technical field

The invention relates to the technical field of touch sensing, in particular to a method for processing control information and an I2C bus device.

Background technique

In the current touch key control chip, the touch key control chip will have a dedicated input and output (I/O, Input/Output) port address to process its own input and output information. The output control usually performed by the touch key control chip includes : Directly drive light-emitting diode (LED, Light EmittingDiode) lamps, fans, relays, etc. for switch control, and the input control usually performed by the touch key control chip includes: keyboard input, timer/sensor and other detection input.

In the prior art, the product equipment using the touch button control chip needs to use its own I/O port when realizing switch control or detecting input, that is to say, the product equipment cannot use the I/O port for switch control. For detection input, the switch control cannot be performed when using the I/O port for detection input. However, in some practical applications, the product equipment needs to control the input and output at the same time. For example, the product equipment using the touch button control chip needs to scan the sensor and start the LED light at the same time.

In the prior art, in order to be able to control input and output at the same time, the usual method is to add more I/O ports in the product equipment, so that multiple I/O ports can perform input control or output control respectively. There is another method It is to install two touch button control chips in the product equipment, and use different touch button control chips for input control or output control respectively. Since it is necessary to add I/O ports or touch button control chips in the product equipment, the existing technology uses These two methods will greatly increase the price and cost of product design. How to use the same touch button control chip to realize input and output control without adding I/O ports, that is, how to realize it without increasing the price and cost of product equipment? It has become a difficult problem to discuss in the industry that the product equipment can perform both switch control and detection input.

Contents of the invention

The embodiment of the present invention provides a method for processing control information and an I2C bus device, which are used to realize input and output control through the same group of I/O ports of a touch button control chip.

In order to solve the above technical problems, embodiments of the present invention provide the following technical solutions:

In a first aspect, an embodiment of the present invention provides a method for processing control information, including:

The internal integrated circuit I2C bus device obtains the device address carried by the control information from the control information sent by the I2C bus master on the I2C bus, and the I2C bus device includes two device addresses: a first device address and a second device address ;

If the device address carried in the control information is the same as the first device address, the I2C bus device configures the input and output I/O ports of the touch key control chip as input control, so that the touch key control chip The above control information is used to collect and control the input data;

If the device address carried in the control information is the same as the second device address, the I2C bus device configures the I/O port of the touch key control chip as output control, so that the touch key control chip The control information is used to control and operate the driven device connected to the touch key control chip.

In the second aspect, the embodiment of the present invention also provides an I2C bus device, including:

The address obtaining unit is used to obtain the device address carried by the control information from the control information sent by the I2C bus master on the I2C bus, and the I2C bus device includes two device addresses: a first device address and a second device address ;

The first configuration unit is configured to configure the input and output I/O ports of the touch key control chip as input control when the device address carried in the control information is the same as the first device address, so that the touch key control The chip performs collection and control of input data according to the control information;

The second configuration unit is configured to configure the I/O port of the touch key control chip as output control when the device address carried in the control information is the same as the second device address, so that the touch key control chip The chip controls and operates the driven device connected to the touch key control chip according to the control information.

It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

In the embodiment of the present invention, the I2C bus device includes two device addresses: the first device address and the second device address. If the control information sent by the I2C bus master carries the first device address, the I2C bus device will touch the button to control the chip. The I/O port is configured as input control, so that the touch button control chip performs the collection and control of input data according to the control information. If the control information sent by the I2C bus master carries the second device address, the I2C bus device will touch the I/O of the button control chip. The O port is configured as output control, so that the touch button control chip can control the driven device according to the control information. After configuring two device addresses for the I2C bus device, you can control the same group of I/O ports of the chip through a touch button To realize input control and output control, there is no need to add I/O ports, and no need to add touch key control chips, which will not increase the price and cost of product design.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that need to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings.

FIG. 1 is a schematic flow block diagram of a method for processing control information provided by an embodiment of the present invention;

Fig. 2 is the frame structure schematic diagram of the I2C writing data agreement packet that the embodiment of the present invention provides;

3 is a schematic diagram of the frame structure of the I2C read data protocol packet provided by the embodiment of the present invention;

FIG. 4 is a schematic diagram of an implementation architecture of a method for processing control information provided by an embodiment of the present invention;

FIG. 5 is a schematic flowchart of an implementation process of a method for processing control information provided by an embodiment of the present invention;

FIG. 6 is a schematic diagram of the composition and structure of an I2C bus device provided by an embodiment of the present invention.

Detailed ways

The embodiment of the present invention provides a method for processing control information and an I2C bus device, which are used to realize input and output control through the same group of I/O ports of a touch button control chip.

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

The method for processing control information provided by the embodiment of the present invention, as shown in FIG. 1 , includes the following steps:

101. The inter-integrated circuit (I2C, Inter-Integrated Circuit) bus device obtains the device address carried in the control information from the control information sent by the I2C bus master on the I2C bus. Among them, the I2C bus device includes two device addresses: the first device address and second device address.

An I2C bus device provided in the embodiment of the present invention is configured with two device addresses, which are respectively named as the first device address and the second device address. That is to say, in the embodiment of the present invention, an I2C bus device has two different device addresses, which is substantially different from an I2C bus device commonly used in the prior art with only one device address, not just an increase in the number of device addresses, but a change in the number of I2C bus devices actual function.

The I2C bus host acts as the host (English full name is Host), and sends control information through the I2C bus. The control information carries the address of the device to which the control information needs to be transmitted. The device address is also the address of the destination device. The I2C bus host is controlling The information carries different device addresses to indicate the I2C bus device that the control information needs to be transmitted to. The I2C bus device is used as a slave (English full name is device). For example, the I2C bus master sends data in order to obtain keyboard input The control information a carries the device address a in the control information a to indicate that the control information a needs to be received and processed by the device whose address is the device address a. If the I2C bus master sends the control information b to close the relay, then If the control information b carries the device address b, it means that the control information b needs to be received and processed by the device whose address is the device address b. In the embodiment of the present invention, if it is assumed that the I2C bus device has the device address a and the device address b at the same time, no matter the control information a or the control information b sent by the I2C bus master can be received by the I2C bus device, because the I2C bus device Have device address a and device address b at the same time.

It should be noted that, in the embodiment of the present invention, the control information sent by the I2C bus master through the I2C bus is an I2C data protocol packet. The control information sent by the host can be an I2C write data protocol packet, and the control information can also be an I2C read data protocol packet. For example, the I2C bus host needs to touch the button to control the chip to obtain the scan data of the sensor (English full name is sensor), then The control information that the I2C bus host needs to issue is the I2C read data protocol packet. If the I2C bus host needs to touch the button to control the chip to drive the light-emitting diode (LED, Light Emitting Diode) to light up, the control information that the I2C bus host needs to issue It is the I2C write data protocol packet.

In order to describe in detail the I2C write data protocol packet and the I2C read data protocol packet, please refer to Figure 2 and Figure 3, wherein Figure 2 is a schematic diagram of the frame structure of the I2C write data protocol packet provided by the embodiment of the present invention, and Figure 3 is an implementation of the present invention For the frame structure diagram of the I2C read data protocol packet provided by the example, please refer to the symbol description of the I2C write data protocol packet and the I2C read data protocol packet in Table 1 below:

Table 1 is a specific symbolic description of the data protocol packets shown in Fig. 2 and Fig. 3

serial number Transmission unit illustrate 1 S start bit 2 SLA+W Device address plus write bit (bit) 3 MemAddres Device storage address 4 A confirmation signal 5 P stop bit 6 SLA+R Device address plus read bit (bit) 7 Data transfer data

It should be noted that the format of the I2C write data protocol packet is shown in Figure 2. The I2C write data protocol packet sent by the master to the slave starts from the "S" bit, and "SLA" in "SLA+W" means The device address carried in the I2C write data protocol packet is SLA, where "W" indicates that it is used to write data, "MemAddres" indicates the storage address of the device where the written data needs to be stored, and "A" indicates the address of the data The receiver sends an acknowledgment signal for the data segment to the sender of the data. Data0 to Data n indicate the content of the transmitted data. "P" means the stop bit, and "P" corresponds to the start bit. Figure 3 shows the format of the I2C read data protocol packet. The I2C read data protocol packet sent by the master to the slave starts from the "S" bit, and "SLA+W" in which "SLA" indicates that the I2C read data protocol The device address carried in the package is SLA, where "W" indicates that it is used to write data, "MemAddres" indicates the storage address of the device where the written data needs to be stored, and "A" indicates that the receiver of the data sends the data "P" means the stop bit, "P" corresponds to the start bit, "SLA+R" in which "SLA" means that the device address carried in the I2C read data protocol packet is SLA, Among them, "R" indicates that it is used to read data, Data0 to Data n indicate the content of the transmitted data, and "P" corresponds to the start bit.

It should be noted that, through the description of step 101, the I2C bus device obtains the device address carried in the control information from the control information, and then the I2C bus device compares the device address carried in the control information with the device address of the I2C bus device itself. relationship, if the device address carried in the control information is the same as the first device address, perform step 102, and if the device address carried in the control information is the same as the second device address, perform step 103. It should be noted that, in the embodiment of the present invention, the control information carrying the first device address indicates that the I2C bus host needs to control the touch button control chip to input and collect data, and if the control information carries the second device address, it indicates that the I2C bus host needs to control The touch button control chip controls and operates the driven device. In the embodiment of the present invention, the I2C bus host is connected to the I2C bus device through the I2C bus, and the I2C bus device is connected to the touch button control chip through a set of I/O ports. In the embodiment of the invention, the I2C bus device can realize input control and output control through the same group of I/O ports of the touch button control chip, and the detailed implementation process is explained one by one in step 102 and step 103, which is different from the needs in the prior art. Compared with two I/O ports or two touch button control chips, the price and cost of product design can be reduced, and in the embodiment of the present invention, the input control and output control can be controlled by the same group of I/O chips of a touch button Ports are time-division multiplexed, saving touch key control chip and I/O port resources, and saving resource costs.

102. If the device address carried in the control information is the same as the first device address, the I2C bus device configures the input/output (I/O, Input/Output) port of the touch button control chip as input control, so that the touch button control chip according to the control information to control the collection of input data.

In the embodiment of the present invention, the I2C bus device obtains the device address carried in the control information through step 101. If the I2C bus device finds that the device address carried in the control information is the first device address, that is, the I2C bus device discovers the device address carried in the control information. The device address is the same as the first device address, and the I2C bus device configures the I/O port of the touch key control chip as input control, then when the I/O port of the touch key control chip is configured as input control, the touch key control chip is Acquisition control of input data can be performed based on the control information.

It should be noted that, in the embodiment of the present invention, for the I2C bus device, configuring the I/O port of the touch button control chip as input control, as one of the possible implementation methods, may specifically include:

A1. The I2C bus device configures the I/O port of the touch button control chip to collect the data input by the keyboard, so that the touch button control chip feeds back the data input by the keyboard to the I2C bus device;

Or, A2, the I2C bus device configures the I/O port of the touch button control chip to detect the data input by the timer, so that the touch button control chip feeds back the data of the timer to the I2C bus device;

Or, A3, the I2C bus device configures the I/O port of the touch button control chip to detect the data scanned by the sensor (sensor), so that the touch button control chip feeds back the data scanned by the sensor to the I2C bus device

For step A1, the control information carrying the first device address instructs the touch button control chip to collect keyboard input data, and after the I2C bus device receives the control information, it configures the I/O port of the touch button control chip to collect keyboard input data, then when the I/O port is configured to collect the data input by the keyboard, the touch key control chip can collect the data input by the keyboard of the peripheral connection device, and then feed back to the I2C bus device through the I/O port touch key control chip collected data.

For step A2 and step A3, the control information carrying the first device address indicates that the touch button control chip detects the timer or the data input by the sensor, then after the I2C bus device receives the control information, it will touch the I/O of the button control chip The port is configured to detect the data input by the timer or sensor. When the I/O port is configured to detect the data input by the timer or sensor, the touch key control chip can detect and scan the timer or sensor, and then pass the I/O port The touch button control chip feeds back the detected data to the I2C bus device.

It should be noted that, in the embodiment of the present invention, in step 102, the I2C bus device configures the input and output I/O ports of the touch button control chip as input control, and then may further include the following steps:

B1. The I2C bus device receives the input control data transmitted by the touch button control chip;

B2. The I2C bus device uses the first device address to send the input control data to the I2C bus master.

For step B1, after the I/O port is configured as input control in step 102, the touch button control chip performs the collection and control of input data according to the control information carrying the first device address, and the touch button control chip collects the data of input control After that, the I2C bus device can receive the input control data through the I/O port connected between the touch button control chip and the I2C bus device, because the I2C bus device in step 102 is based on the control information carrying the first device address And configure the I/O port of the touch button control chip as input control, in step B2, the I2C bus device uses the first device address to send the data of the input control to the I2C bus master, so that the I2C bus master needs to receive the control information sent. received feedback.

It should be noted that, in the embodiment of the present invention, in step 102, the I2C bus device configures the input and output I/O ports of the touch button control chip as input control, and then may further include the following steps:

If the input control configuration for the I/O port fails, the I2C bus device feeds back the first error message to the I2C bus master.

That is to say, if the configuration fails, the I2C bus device feeds back the first error message to the I2C bus master, telling the I2C bus master that the configuration fails. At this time, the I2C bus master can repeatedly report to the I2C bus after receiving the first error message The bus device resends the control information.

103. If the device address carried in the control information is the same as the address of the second device, the I2C bus device configures the I/O port of the touch key control chip as output control, so that the touch key control chip is connected to the touch key control chip according to the control information The driven equipment performs control operations.

In the embodiment of the present invention, the I2C bus device obtains the device address carried in the control information through step 101. If the I2C bus device finds that the device address carried in the control information is the second device address, that is, the I2C bus device discovers the device address carried in the control information. The device address is the same as the second device address, and the I2C bus device configures the I/O port of the touch key control chip as output control, then when the I/O port of the touch key control chip is configured as output control, the touch key control chip will be The driven device connected to the touch key control chip can be controlled and operated according to the control information, wherein the driven device refers to a device connected to the touch key control chip and needs to be driven by the touch key control chip, for example A device that needs to be controlled by the touch button to issue instructions and then be turned on or off.

It should be noted that, in the embodiment of the present invention, for the I2C bus device, configuring the I/O port of the touch button control chip as output control, as one of the possible implementation methods, may specifically include:

The I2C bus device configures the I/O ports of the touch button control chip as general-purpose programmable input and output (GPIO, General-Purpose IO ports), where GPIO is used to drive the switches of LED lights, fans, and relays, so that the touch button control The chip turns on or off the LED lights, fans, and relays according to the control information.

It should be noted that there are external devices or circuits with simple structures in the embedded system. Some of these devices or circuits need to touch the key control chip to provide control means. Such devices or circuits only require one bit to be controlled. Control, that is, as long as there are two states of on/off, such as on and off of the LED light, on and off of the fan, etc., only need to touch the button to control the chip to output two control commands, which can be called driven equipment. For the control of these devices and circuits, it is not suitable to use traditional serial ports or parallel ports. A general programmable IO interface, called GPIO for short, can be set on the touch key control chip.

It should be noted that, in the embodiment of the present invention, in step 103, the I2C bus device configures the input and output I/O ports of the touch button control chip as output control, and then the following steps may be included:

C1, the I2C bus device receives the output control data transmitted by the touch button control chip;

C2. The I2C bus device uses the second device address to send the output control data to the I2C bus master.

For step C1, after the I/O port is configured as output control in step 103, the touch button control chip performs the collection and control of output data according to the control information carrying the second device address, and the touch button control chip collects the output control data Afterwards, the I2C bus device can read the data of the output control through the I/O port connected between the touch button control chip and the I2C bus device, because the I2C bus device is based on the control of the second device address in step 103 information and configure the I/O port of the touch button control chip as output control, in step C2, the I2C bus device uses the second device address to send the output control data to the I2C bus master, so as to realize the need for the I2C bus master to send control information Feedback received.

It should be noted that, in the embodiment of the present invention, in step 103, the I2C bus device configures the input and output I/O ports of the touch button control chip as output control, and then the following steps may be included:

If the output control configuration for the I/O port fails, the I2C bus device feeds back a second error message to the I2C bus master.

That is to say, if the configuration fails, the I2C bus device feeds back the second error message to the I2C bus master, telling the I2C bus master that the configuration fails. At this time, the I2C bus master can repeatedly report to the I2C bus after receiving the second error message The bus device resends the control information.

It should be noted that, through the description of step 101, the I2C bus device obtains the device address carried in the control information from the control information, and then the I2C bus device compares the device address carried in the control information with the device address of the I2C bus device itself. relationship, the embodiment of the present invention may also include the following steps:

If the device address carried in the control information is neither the first device address nor the second device address, the I2C bus device discards the control information.

That is to say, in this embodiment of the present invention, if the device address carried in the control is the same as the first device address, step 102 is executed; if the device address carried in the control information is the same as the second device address, step 103 is executed, except for step 102 In implementations other than 103, the I2C bus device will discard the control information sent by the I2C bus master without any processing.

In the embodiment of the present invention, the I2C bus device includes two device addresses: the first device address and the second device address. If the control information sent by the I2C bus master carries the first device address, the I2C bus device will touch the button to control the chip. The I/O port is configured as input control, so that the touch button control chip performs the collection and control of input data according to the control information. If the control information sent by the I2C bus master carries the second device address, the I2C bus device will touch the I/O of the button control chip. The O port is configured as output control, so that the touch button control chip can control the driven device according to the control information. After configuring two device addresses for the I2C bus device, you can control the same group of I/O ports of the chip through a touch button To realize input control and output control, there is no need to add I/O ports, and no need to add touch key control chips, which will not increase the price and cost of product design.

The above embodiments have introduced the processing method of the control information provided by the embodiment of the present invention. Next, the processing method of the control information will be described in detail in an actual application scenario. Please refer to FIG. 4 , which shows the control information provided by the embodiment of the present invention. A schematic diagram of the implementation architecture of the processing method, assuming that the I2C bus device provided by the embodiment of the present invention includes two device addresses 22 and 23 respectively, the main implementation architecture includes the following steps:

1), the I2C bus master sends control information, if the device address carried by the control information is 22, then the I2C bus device performs step 2), if the device address carried by the control information is 23, then executes 3), if none, the I2C bus device will The control information is discarded without any processing;

2) The I2C bus device configures the I/O of the touch button control chip to be used by the Sensor. If the configuration is successful, perform step 4). If the configuration fails, an error message will be fed back to the I2C bus host;

3) The I2C bus device configures the same group of I/O of the touch button control chip as GPIO. If the configuration is successful, perform step 5). If the configuration fails, an error message will be fed back to the I2C bus host;

4) The touch button control chip collects the Sensor data of the touch button, encapsulates the Sensor data into an I2C protocol packet according to the device address 22 of the I2C bus device, and transmits it to the I2C bus device, and then the I2C bus device sends it to the I2C bus host;

5) The touch button control chip configures the GPIO to light up the LED light according to the control information received by the I2C bus device, and the button control chip encapsulates the GPIO configuration data into an I2C protocol packet and transmits it to the I2C bus device according to the device address 23 of the I2C bus device , and then sent by the I2C bus device to the I2C bus master.

It should be noted that at the same time, according to the address 23 of the I2C bus device, the step of encapsulating the GPIO configuration data into an I2C protocol packet and sending it to the I2C bus device is not mandatory, only when the I2C bus master needs to know the current GPIO configuration status. The I2C protocol package needs to be fed back.

After describing the overall implementation architecture of the method for processing control information, please refer to FIG. 5 , which is a schematic flow diagram showing the implementation flow of the method for processing control information provided by the embodiment of the present invention. It is assumed that the I2C bus device provided by the embodiment of the present invention includes The two device addresses are 22 and 23 respectively, and the implementation method of the system includes the following steps:

501. The I2C bus host sends control information, and then executes step 502;

502. The I2C bus device judges the device address carried in the control information. If it is 22, the I2C bus device executes step 503. If the device address carried in the control information is 23, executes 504. If not, the I2C bus device executes 505;

Discard the control information without any processing;

503. The I2C bus device configures the I/O of the touch button control chip to be used by the Sensor, and then executes step 505;

504. The I2C bus device configures the same group of I/O of the touch button control chip as GPIO, and then executes step 509;

505. The I2C bus device judges whether the I/O of the configuration touch button control chip is used as a Sensor successfully. If the configuration is successful, step 506 is performed, and if the configuration fails, step 507 is performed;

506. The touch button control chip collects the Sensor data of the touch button, and then executes step 508;

507. The I2C bus device feeds back error prompt information to the I2C bus master;

508. The touch button control chip encapsulates the Sensor data into an I2C protocol packet according to the device address 22 of the I2C bus device and transmits it to the I2C bus device, and then the I2C bus device sends it to the I2C bus host.

509. The I2C bus device judges whether it is successful to configure the I/O of the touch button control chip as GPIO. If the configuration is successful, execute step 510, and if the configuration fails, execute step 511;

510. The touch button control chip configures the GPIO to light up the LED light according to the control information received by the I2C bus device, and then executes step 512;

511. The I2C bus device feeds back error prompt information to the I2C bus master;

512. The touch button control chip encapsulates the GPIO configuration data into an I2C protocol packet according to the device address 23 of the I2C bus device and transmits it to the I2C bus device, and then the I2C bus device sends it to the I2C bus host.

The above embodiments have introduced the processing method of the control information provided by the embodiment of the present invention, and then introduce the I2C bus device using the processing method of the control information. In practical applications, the I2C bus device provided by the embodiment of the present invention can be specifically set in The touch button control chip can also be deployed in the form of an independent device, interacting with the touch button control chip, and processing control information through software or hardware integration. In the embodiments of the present invention, devices corresponding to the methods introduced in the above-mentioned method embodiments will be introduced. For specific execution methods of each unit, please refer to the above-mentioned method embodiments. Only the content of relevant units will be described here, and the specific description is as follows.

The I2C bus device provided by the embodiment of the present invention, as shown in FIG. 6, the I2C bus device 800 includes:

The address acquisition unit 801 is configured to acquire the device address carried in the control information from the control information sent by the I2C bus master on the I2C bus, and the I2C bus device includes two device addresses: a first device address and a second device address address;

The first configuration unit 802 is configured to configure the input and output I/O ports of the touch key control chip as input control when the device address carried in the control information is the same as the first device address, so that the touch key The control chip performs collection and control of input data according to the control information;

The second configuration unit 803 is configured to configure the I/O port of the touch key control chip as output control when the device address carried in the control information is the same as the second device address, so that the touch key The control chip controls and operates the driven device connected to the touch key control chip according to the control information.

It should be noted that, for the I2C bus device provided in the embodiment of the present invention, as one of the implementable ways, the I2C bus device may also include (not shown in FIG. 6 ):

The first receiving unit is used to receive the data transmitted by the touch button control chip and transmit the input control;

A first sending unit, configured to use the first device address to send the input control data to the I2C bus master.

It should be noted that, for the I2C bus device provided in the embodiment of the present invention, as another implementable manner, the I2C bus device may also include (not shown in FIG. 6 ):

The second receiving unit is used to receive the data of the output control transmitted by the touch button control chip;

a second sending unit, configured to use the second device address to send the output control data to the I2C bus master.

It can be realized that the I2C bus device can also include (not shown in Figure 6):

A discarding unit, configured to discard the control information if the device address carried in the control information is neither the first device address nor the second device address.

In addition, it should be noted that, for the first configuration unit provided in the embodiment of the present invention, as another achievable way, the first configuration unit can specifically be used to configure the I/O port of the touch key control chip to collect The data input by the keyboard, so that the touch key control chip feeds back the data input by the keyboard to the I2C bus device; the I2C bus device configures the I/O port of the touch key control chip to detect the data input by the timer so that the touch button control chip feeds back the data of the timer to the I2C bus device; or, the I2C bus device configures the I/O port of the touch button control chip to detect the data scanned by the sensor sensor, The touch button control chip feeds back the data scanned by the sensor to the I2C bus device.

In addition, it should be noted that, for the second configuration unit provided in the embodiment of the present invention, as another achievable way, the second configuration unit can specifically be used to configure the I/O port of the touch key control chip It is a general-purpose programmable input and output GPIO, and the GPIO is used to drive the switches of light-emitting diodes, LED lights, fans, and relays, so that the touch key control chip can turn on or off the LED lights, fans, and relays according to the control information operate.

It should be noted that, for the I2C bus device provided in the embodiment of the present invention, as another implementable manner, the I2C bus device may also include (not shown in FIG. 6 ):

a first feedback unit, configured to feed back first error prompt information to the I2C bus master when the first configuration unit fails to configure input control for the I/O port;

The second feedback unit is configured to feed back second error prompt information to the I2C bus master when the second configuration unit fails to configure the output control for the I/O port.

It should be noted that the information interaction and execution process between the modules/units of the above-mentioned device are based on the same idea as the method embodiment of the present invention, and the technical effect it brings is the same as that of the method embodiment of the present invention. The specific content can be Refer to the descriptions in the foregoing method embodiments of the present invention, and details are not repeated here.

In the embodiment of the present invention, the I2C bus device includes two device addresses: the first device address and the second device address. If the control information sent by the I2C bus master carries the first device address, the first configuration unit will touch the button to control the chip The I/O port of the I2C bus is configured as input control, so that the touch key control chip can collect and control the input data according to the control information. If the control information sent by the I2C bus master carries the second device address, the second configuration unit will touch the key control chip. The I/O port is configured as output control, so that the touch button control chip can control the driven device according to the control information. After configuring two device addresses for the I2C bus device, you can control the same group of I/O of the chip through a touch button. The O port realizes input control and output control, without adding I/O ports, and without adding a touch button control chip, and will not increase the price and cost of product design.

Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the above-mentioned storage The medium can be read-only memory, magnetic or optical disk, etc.

The method for processing control information provided by the present invention and the I2C bus device have been introduced in detail above. For those of ordinary skill in the art, according to the idea of the embodiment of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.

Claims (14)

1. A method for processing control information, comprising: The internal integrated circuit I2C bus device obtains the device address carried by the control information from the control information sent by the I2C bus master on the I2C bus, and the I2C bus device includes two device addresses: a first device address and a second device address ; If the device address carried in the control information is the same as the first device address, the I2C bus device configures the input and output I/O ports of the touch key control chip as input control, so that the touch key control chip The above control information is used to collect and control the input data; If the device address carried in the control information is the same as the second device address, the I2C bus device configures the I/O port of the touch key control chip as output control, so that the touch key control chip The control information is used to control and operate the driven device connected to the touch key control chip. 2. The method according to claim 1, wherein the I2C bus device configures the input and output I/O ports of the touch button control chip as input control, and then also includes: The I2C bus device receives the input control data transmitted by the touch button control chip; The I2C bus device uses the first device address to send the input-controlled data to the I2C bus master. 3. The method according to claim 1, wherein the I2C bus device configures the I/O port of the touch button control chip as output control, and then also includes: The I2C bus device receives the output control data transmitted by the touch button control chip; The I2C bus device uses the second device address to send the output control data to the I2C bus master. 4. The method according to claim 1, wherein the method further comprises: If the device address carried in the control information is neither the first device address nor the second device address, the I2C bus device discards the control information. 5. The method according to claim 1, wherein the I2C bus device configures the I/O port of the touch button control chip as input control, including: The I2C bus device configures the I/O port of the touch button control chip to collect data input by the keyboard, so that the touch button control chip feeds back the data input by the keyboard to the I2C bus device; Or, the I2C bus device configures the I/O port of the touch button control chip to detect the data input by the timer, so that the touch button control chip feeds back the data of the timer to the I2C bus device; Or, the I2C bus device configures the I/O port of the touch button control chip to detect the data scanned by the sensor sensor, so that the touch button control chip feeds back the data scanned by the sensor to the I2C bus device. 6. The method according to claim 1, wherein the I2C bus device configures the I/O port of the touch button control chip as output control, including: The I2C bus device configures the I/O port of the touch button control chip as a general-purpose programmable input and output GPIO, and the GPIO is used to drive the switch of a light-emitting diode LED lamp, a fan, and a relay, so that the touch button controls The chip turns on or off the LED lights, fans, and relays according to the control information. 7. The method of claim 1, wherein, The I2C bus device configures the input and output I/O ports of the touch button control chip as input control, and then also includes: if the I2C bus device fails to configure the input control for the I/O port, the I2C bus device sends the I2C bus host Feedback the first error message; The I2C bus device configures the I/O port of the touch button control chip as output control, and then further includes: if the I2C bus device fails to configure the output control for the I/O port, the I2C bus device sends the I2C bus host Feedback the second error message. 8. An internal integrated circuit I2C bus device, characterized in that, comprising: The address obtaining unit is used to obtain the device address carried by the control information from the control information sent by the I2C bus master on the I2C bus, and the I2C bus device includes two device addresses: a first device address and a second device address ; The first configuration unit is configured to configure the input and output I/O ports of the touch key control chip as input control when the device address carried in the control information is the same as the first device address, so that the touch key control The chip performs collection and control of input data according to the control information; The second configuration unit is configured to configure the I/O port of the touch key control chip as output control when the device address carried in the control information is the same as the second device address, so that the touch key control chip The chip controls and operates the driven device connected to the touch key control chip according to the control information. 9. I2C bus equipment according to claim 8, is characterized in that, described I2C bus equipment also comprises: a first receiving unit, configured to receive the input control data transmitted by the touch key control chip; A first sending unit, configured to use the first device address to send the input control data to the I2C bus master. 10. I2C bus equipment according to claim 8, is characterized in that, described I2C bus equipment also comprises: a second receiving unit, configured to receive the output control data transmitted by the touch button control chip; a second sending unit, configured to use the second device address to send the output control data to the I2C bus master. 11. I2C bus equipment according to claim 8, is characterized in that, described I2C bus equipment also comprises: A discarding unit, configured to discard the control information if the device address carried in the control information is neither the first device address nor the second device address. 12. The I2C bus device according to claim 8, wherein the first configuration unit is specifically configured to configure the I/O port of the touch key control chip to collect data input by the keyboard, so that the touch key The control chip feeds back the data input by the keyboard to the I2C bus device; or, the first configuration unit configures the I/O port of the touch key control chip to detect the data input by the timer, so that the touch key control The chip feeds back the data of the timer to the I2C bus device; or, the first configuration unit configures the I/O port of the touch key control chip to detect the data scanned by the sensor sensor, so that the touch key control The chip feeds back the data scanned by the sensor to the I2C bus device. 13. The I2C bus device according to claim 8, wherein the second configuration unit is specifically configured to configure the I/O port of the touch key control chip as a general programmable input and output GPIO, and the GPIO It is used to drive switches of light-emitting diodes (LED lights, fans, and relays), so that the touch key control chip can turn on or off the LED lights, fans, and relays according to the control information. 14. The I2C bus device according to claim 8, wherein the I2C bus device further comprises: a first feedback unit, configured to feed back first error prompt information to the I2C bus master when the first configuration unit fails to configure input control for the I/O port; The second feedback unit is configured to feed back second error prompt information to the I2C bus master when the second configuration unit fails to configure the output control for the I/O port.