WO2012079301A1

WO2012079301A1 - Method and device for upgrading touch screen firmware of mobile terminal

Info

Publication number: WO2012079301A1
Application number: PCT/CN2011/070973
Authority: WO
Inventors: 魏兰英; 徐可; 杨新力; 李伟; 潘英
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-12-17
Filing date: 2011-02-14
Publication date: 2012-06-21
Also published as: CN102033770B; CN102033770A

Abstract

A method and device for upgrading the touch screen firmware of a mobile terminal are provided. The method includes: reading the touch screen firmware version information which is stored in the user space of the system into the kernel space of the system; according to the read firmware version information, upgrading the touch screen firmware by simulating an upgrade protocol through the General Purpose I/O (GPIO) ports of the touch screen. The present invention, simulates the upgrade protocol through multiplexing the GPIO ports of the clock pin (SCL) and the data pin (SDA) which are used for the I2C communication and on the hardware connector of the touch screen, thus implementing the automatic upgrade of the touch screen firmware on the mobile terminal, reducing the workload of upgrade, raising the upgrade speed, and facilitating the use.

Description

The present invention relates to the field of communications, and in particular to a touch extension firmware upgrade method and apparatus for a mobile terminal. BACKGROUND With the universal application of smart phones, touch screens play an increasingly important role, especially capacitive touch screens, which will lead the main touch screen market in the future due to their long life, finger touch, and ease of use. And it is possible to completely replace the resistive touch screen. However, the capacitive touch screen is a new thing, the technology is not perfect, the firmware version is often updated, sometimes it needs to solve some bugs (such as linear drift, random data, local failure, etc.), compatibility issues, or need manufacturers to provide more Updated features, which all require upgrading the firmware of the touch screen. The prior art is to upgrade the touch screen firmware by using a special tool. The upgrade method has the following problems: If the touch screen of the mobile terminal needs to be upgraded after being mass-produced, the touch screen needs to be removed, and a special tool is used. Upgrade, in this case, it will be very laborious and easy to damage the touch screen. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a method and apparatus for upgrading a touch screen firmware of a mobile terminal, so as to at least solve the problem that the touch screen firmware upgrade workload is large and the touch screen is easily damaged. According to an aspect of the present invention, a method for upgrading a touch screen firmware of a mobile terminal is provided, including: reading firmware version information of a touch screen stored in a user space of the system into a kernel space of the system; Firmware version information, through the touch screen GPIO (General Purpose I/O) port to simulate the upgrade protocol for touch screen firmware upgrade. Preferably, the firmware version information of the touch screen stored in the user space of the system is read into the kernel space of the system, including: reading the firmware version information stored in the file system of the user space into the proc interface in the kernel driver. In the cache of kernel space. Preferably, the GPIO port is a clock pin SCL (I2C Serial Clock) for I2C (Inter Integrated Circuit) communication and a data pin SDA (I2C Serial Data, string) on the hardware connector of the touch screen. Line data). Preferably, according to the firmware version information read in, before the touch extension firmware upgrade is simulated by the universal input/output port GPIO of the touch screen, the method includes: turning off the touch screen for interrupt of I2C communication, and connecting the SCL and SDA pins Configured as a normal GPIO pin. Preferably, according to the firmware version information read in, the upgrade protocol is simulated by the universal input/output port GPIO of the touch screen, and the touch display firmware is upgraded, including: the touch screen chip that needs to be upgraded is in the upgrade mode, and the touch screen chip ID is checked whether the ID is satisfied. Upgrade requirement; if yes, erase the original firmware version information in the touch screen chip; burn the firmware version information read into the kernel space into the touch screen chip. Preferably, after the firmware version information read into the kernel space is burned into the touch screen chip, the method further includes: verifying whether the checksum of the firmware version information burned into the touch screen chip is correct, and if yes, setting an upgrade success flag. Preferably, before the touch screen chip that needs to be upgraded is in the upgrade mode, and the touch screen chip ID is checked to meet the upgrade requirement, the method includes: initializing a lock for ensuring that the upgrade process is not interrupted, and opening the lock protection. According to another aspect of the present invention, a touch screen firmware upgrading apparatus for a mobile terminal is provided, comprising: a reading module configured to read firmware version information of a touch screen stored in a user space of the system into a kernel space of the system; The upgrade module is set to simulate the upgrade protocol for the touch screen firmware upgrade through the touch screen's universal input/output port GPIO according to the firmware version information read. Preferably, the upgrade module includes: a check submodule, configured to enable the touch screen chip to be upgraded to be in an upgrade mode, and check whether the touch screen chip ID meets an upgrade requirement; the erase submodule is set to wipe the original firmware version information in the touch screen chip In addition, the sub-module is programmed to burn firmware version information read into the kernel space into the touch screen chip. Preferably, the upgrade module further includes: a verification submodule, configured to verify whether the checksum of the firmware version information burned into the touch screen chip is correct, and if yes, setting an upgrade success flag. In the present invention, the upgrade protocol is simulated by multiplexing the clock pin SCL of the hardware connector of the touch screen and the GPIO port of the data pin SDA, so that the automatic upgrade of the touch screen firmware can be implemented on the mobile terminal, thereby reducing the upgrade workload. The upgrade is fast and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, 1 is a flow chart of a touch screen firmware upgrade method according to an embodiment of the present invention; FIG. 2 is a block diagram of a touch screen firmware upgrade apparatus according to an embodiment of the present invention; FIG. 3 is a touch screen firmware upgrade apparatus module according to an embodiment of the present invention; FIG. 4 is a schematic diagram of firmware upgrade of a touch screen according to an embodiment of the present invention; and FIG. 5 is a flowchart of firmware upgrade of a touch screen according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. 1 is a flowchart of a method for upgrading a touch screen firmware according to an embodiment of the present invention. As shown in FIG. 1, the method includes the following steps: Step S102: reading firmware version information of a touch screen stored in a user space of the system into the system. Kernel space; Step S104, emulating the upgrade protocol by multiplexing the clock pin SCL of the hardware connector of the touch screen and the GPIO port of the data pin SDA according to the firmware version information read in. In this embodiment, the upgrade protocol is simulated by multiplexing the clock pin SCL of the hardware connector of the touch screen and the GPIO port of the data pin SDA, so that the automatic upgrade of the touch screen firmware can be implemented on the mobile terminal, thereby reducing the upgrade workload. , the upgrade speed is fast and easy to use. Wherein, in step S102, the firmware version of the touch screen is placed in the file system of the user space, and the firmware version information is read into the kernel space through the proc interface. If the touch screen firmware is not required to be used after the touch screen firmware upgrade is completed, the touch screen driver cannot be uninstalled during the upgrade. In the above method, the upgrade is implemented by using the proc interface in the kernel, and the proc interface is placed in the driver of the touch screen, that is, the firmware of the touch screen is upgraded in the kernel driver, so that the touch screen can be used normally without restarting the switch after the upgrade is completed. . The general capacitive touch screen is I2C communication. The interface of the touch screen hardware connector generally has five GPIO pins, which are: GND (ground;), SCL (clock), SDA (data), VDD (supply voltage), and INT (interrupt) pin. The firmware upgrade in step S104 is mainly implemented by simulating the upgrade protocol through two gpio ports of SCL and SDA. The data pin SDA and the clock pin SCL require a pull-up resistor during I2C communication on the hardware, and the two pins require a pull-down resistor when the touch screen is in the firmware upgrade mode. In this embodiment, the following method can be implemented: The clock pin changes from a high level to a level to achieve a data pin, and the data pin is changed from an input mode to an output low mode, and is delayed. For a period of time, when the data pin is detected to be low, the touch screen chip enters the upgrade mode, and then the data pin is changed from the output low mode to the input mode, thereby solving the problem that the pull-down resistor is required. In step S104, before using the two gpio ports SCL and SDA to simulate the upgrade protocol, the touch screen interrupt should be turned off to ensure that the interrupt of the touch screen does not work temporarily. If the touch screen interrupt is active, I2C communication will be performed, and the I2C communication will be used. Go to the two gpio pins of SCL and SDA to affect the upgrade; then multiplex the two gpio ports of I2C communication and configure them into two common gpio pins, so that these two pins will not perform I2C communication temporarily. It is. The upgrade process of step S104 mainly includes: locking protection to ensure that the upgrade process is not interrupted, and the lock mechanism is used to solve the synchronization problem faced when multiple processes concurrently access the same file. Check the firmware so that the touch screen chip is in upgrade mode, check whether the chip ID (identification) that needs to be upgraded meets the requirements, and meet the requirements to upgrade. Wipe flash (flash) to erase the original touch screen firmware version. Write flash to burn the new firmware version read from user space into flash. Verify that the checksum of the newly programmed firmware version is correct. If it is correct, the upgrade is successful. Set the upgrade success flag, otherwise set the upgrade failure flag. If the upgrade fails, the upgrade will be repeated, so iterate three times. Unlock the lock after the upgrade is successful. 2 is a block diagram of a touch screen firmware upgrading apparatus according to an embodiment of the present invention. As shown in FIG. 2, the reading module 10 and the upgrading module 20 are included. The read-in module 10 is configured to read the firmware version information of the touch screen stored in the user space of the system into the kernel space of the system; and the upgrade module 20 is configured to use the universal version of the touch screen according to the firmware version information read in. The input/output port GPIO is used to simulate the upgrade protocol for touch screen firmware upgrades. In this embodiment, the upgrade protocol is simulated by multiplexing the clock pin SCL of the hardware connector of the touch screen and the GPIO port of the data pin SDA, so that the automatic upgrade of the touch extension firmware can be implemented on the mobile terminal, thereby reducing the upgrade work. Quantity, upgrade speed, easy to use. In the above apparatus, as shown in FIG. 3, the upgrade module 20 includes an inspection sub-module 202, an erase sub-module 204 burn-in sub-module 206, and a school-risk sub-module 208. The check sub-module 202 is configured to enable the touch screen chip that needs to be upgraded to be in an upgrade mode, and check whether the touch screen chip ID meets the upgrade requirement. The erasing sub-module 204 is configured to erase the original firmware version information in the touch screen chip. The burning sub-module 206 is configured to burn firmware version information read into the kernel space into the touch screen chip. The verification sub-module 208 is configured to verify whether the checksum of the firmware version information burned into the touch screen chip is correct, and if yes, set an upgrade success flag. FIG. 4 is a schematic diagram of the firmware upgrade of the touch screen according to the embodiment of the present invention. As shown in FIG. 4, the Linux system is divided into two parts: user space and kernel space. The core software of the kernel space is independent of the common application and runs at a higher level. At the privilege level, they reside on the protected memory space and have all the permissions to access the hardware device; in contrast, the application runs in user space, and applications running in user space can only see what they are allowed to use. Part of the system resources, and can not use certain system functions, nor directly access kernel space and hardware devices, and other specific usage restrictions. Putting user space and kernel space under this asymmetric access mechanism has good security, can effectively resist the snooping of malicious users, and can also prevent the infringement of poor quality user programs, thus making the system run more stable and reliable. In this embodiment, the touch screen firmware version is placed in the file system of the user space, and the upgrade program is placed in the touch display driver of the kernel space, and the interaction between the user space and the kernel space is performed through the proc interface. Put the firmware version of the touch screen in the file system of the user space, read the firmware version information into the kernel space through the proc interface, send the upgrade command in the user space, and the proc interface receives the upgrade command, and the upgrade starts. In this embodiment, the user module, the kernel driver module, and the upgrade module are mainly included. The user module is used to save the new touch screen firmware, send an upgrade command, check whether the upgrade is successful, and resend the upgrade command if it fails. The upgrade module is mainly implemented according to the upgrade protocol. It mainly implements the following functions: (1) Check the firmware, make the touch screen chip in upgrade mode, check whether the chip ID that needs to be upgraded meets the requirements, and meet the requirements to upgrade. (2) Wipe the flash and erase the original touch screen firmware version. (3) Flashing the flash and burning the new firmware version read from the user space into the flash. (4) Verify that the checksum of the newly programmed firmware version is correct. If it is correct, the upgrade is successful. Set the upgrade success flag, otherwise set the upgrade failure flag. If the upgrade fails, the upgrade will be repeated, so iterate three times. The kernel driver module is mainly the driver of the touch screen. The proc interface is added in the driver, and the touch screen is upgraded in the proc interface. The Proc interface is mainly to ensure three aspects of work:

(1) Reuse the two gpio ports of the SCL and SDA of the touch screen connector to suspend the I2C communication, and work according to the normal gpio analog touch screen firmware upgrade protocol.

(2) Upgrade the module and upgrade according to the touch screen firmware upgrade protocol.

(3) After the touch screen firmware upgrade is completed, the touch screen of the switch is not required to be used normally. Turn off the touch screen interrupt before the upgrade, suspend the I2C communication work, restore the I2C communication after the upgrade, open the interrupt, and the touch screen is normally used. The user module and the kernel driver module are two modules. The proc interface is placed in the kernel driver module, which is a channel for contacting the user module and the kernel driver module. The proc interface implements communication between the user module and the kernel driver module. At the same time, the upgrade module is located inside the proc interface. When the proc interface receives the upgrade command sent by the user module, the upgrade module starts the real firmware upgrade. FIG. 5 is a flowchart of upgrading a touch screen firmware according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps: Step 4: S502, the user sends an upgrade command, and the upgrade starts. Step S504, so some preparatory work for the upgrade, the interrupt is turned off, and the SCL and SDA pins of the I2C are multiplexed to simulate the upgrade protocol. Step S506, initializing a new lock, and unlocking the lock to ensure that the upgrade process is not interrupted. Step S508, reading the latest touch display firmware version of the user space into the kernel space through the proc interface, and storing it in the local buff (cache) for upgrading. In step S510, the hardware information is checked, the touch screen chip is in the upgrade mode, and the chip ID is checked whether the upgrade requirement is met. Step S512, wiping the flash, erasing the original firmware; step S514, programming the flash, writing the latest firmware stored in the local buf to the flash; step S516, verifying, calculating the information of the information read from the flash Check and compare the checksum of the firmware information stored in the buff. If the upgrade is successful, set the upgrade success flag. If it fails, set the upgrade failure flag, the user resends the upgrade command, and the upgrade restarts. Step S518, the lock protection is turned off, and the lock is cancelled. Step S520, the touch screen is powered off, not the power-off of the mobile terminal, restoring the SCL and SDA gpio port configuration of the I2C, enabling the I2C communication, opening the interrupt, and ensuring that the touch display can be used normally. At this point, the entire upgrade process is complete. In the above embodiment of the present invention, the firmware of the touch screen firmware can be upgraded to the latest version at any time by the automatic upgrade of the capacitive touch screen firmware of the mobile terminal, thereby solving the problems of bugs, compatibility, incomplete functions and the like of the original firmware version, and the upgrade process is not Depending on the special upgrade tool, the upgrade process is fast, reliable and easy to use. In addition, the touch screen firmware version is placed in the software version of the mobile terminal, and the version can be updated along with the update of the mobile terminal software version; if the upgrade fails, It can be upgraded cyclically to better ensure the success of the capacitive touch screen upgrade firmware. Obviously, those skilled in the art will appreciate that the various modules or steps of the present invention described above can be implemented with a general purpose computing device, which can be centralized on a single computing device, or distributed. Alternatively, on a network of computing devices, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, The steps shown or described may be performed in an order different than that herein, or they may be separately fabricated into individual integrated circuit modules, or a plurality of the modules or steps may be implemented as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for upgrading a touch screen firmware of a mobile terminal, comprising:

Reading the touch screen firmware version information stored in the user space of the system into the kernel space of the system;

According to the firmware version information read in, through the universal input / output port of the touch screen

GPIO to simulate the upgrade protocol for touch screen firmware upgrades.

2. The method according to claim 1, wherein the touch screen firmware version information stored in the user space of the system is read into the kernel space of the system, including:

The firmware version information stored in the file system of the user space is read into the cache of the kernel space by the proc interface in the kernel driver.

3. The method according to claim 1, wherein the GPIO port is a clock pin SCL and a data pin SDA for internal integrated circuit I2C communication on a hardware connector of the touch screen.

4. The method according to claim 3, wherein, before the touch screen firmware upgrade is simulated by the universal input/output port GPIO of the touch screen according to the read firmware version information, the method comprises:

The touch screen is turned off for interrupting I2C communication, and the SCL and SDA pipes are configured as ordinary GPIO pipes *p.

The method according to claim 1, wherein the upgrade protocol is simulated by the universal input/output port GPIO of the touch screen according to the read firmware version information, including:

The touch screen chip that needs to be upgraded is in an upgrade mode, and it is checked whether the touch screen chip ID meets an upgrade requirement;

If yes, erasing the original firmware version information in the touch screen chip; burning the firmware version information read into the kernel space into the touch screen chip.

The method of claim 5, wherein after the firmware version information read into the kernel space is burned into the touch screen chip, the method further includes: Verify that the checksum of the firmware version information burned into the touch screen chip is correct, and if so, set the upgrade success flag.

The method according to claim 6, wherein, before the touch screen chip that needs to be upgraded is in an upgrade mode, and checking whether the touch screen chip ID meets the upgrade requirement, the method includes: initializing a lock for ensuring that the upgrade process is not interrupted And turn on lock protection.

8. A touch screen firmware upgrade device for a mobile terminal, comprising:

a read-in module configured to read touch screen firmware version information stored in a user space of the system into a kernel space of the system;

The upgrade module is set to simulate the upgrade protocol for the touch screen firmware upgrade through the touch screen's universal input/output port GPIO based on the firmware version information read.

9. The device according to claim 8, wherein the upgrade module comprises:

The check submodule is set to enable the touch screen chip to be upgraded to be in the upgrade mode, and check whether the touch screen chip ID meets the upgrade requirement;

The erase submodule is configured to erase the original firmware version information in the touch screen chip;

The burn-in sub-module is configured to burn the firmware version information read into the kernel space into the touch screen chip.

The device of claim 9, wherein the upgrading module further comprises:

The verification sub-module is set to verify that the firmware-insurance of the firmware version information burned into the touch screen chip is correct, and if so, the upgrade success flag is set.