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Method and device for reading/writing SD (Secure Digital Memory) card

A read-write module, to-be-read technology, applied to devices, instruments, computer parts, etc. for collaborative operation, can solve problems such as increasing hardware costs, and achieve the effect of reducing hardware costs

Active Publication Date: 2016-10-12
SHENZHEN MICRONET FORCE INFORMATION TECH CO LTD
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  • Abstract
  • Description
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Problems solved by technology

[0004] The main purpose of the present invention is to provide a method and device for reading and writing SD cards, aiming to solve the problem that the hardware cost is obviously increased when the solution of adding an additional chip is used to realize the reading and writing of SD cards

Method used

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  • Method and device for reading/writing SD (Secure Digital Memory) card
  • Method and device for reading/writing SD (Secure Digital Memory) card
  • Method and device for reading/writing SD (Secure Digital Memory) card

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Embodiment Construction

[0060] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0061] Above-mentioned problem, the present invention provides a kind of method of reading and writing SD card.

[0062] refer to figure 1 , figure 1 It is a schematic flowchart of the first embodiment of the method for reading and writing an SD card according to the present invention.

[0063] In this embodiment, the method for reading and writing an SD card includes:

[0064] Step S10, initialize the SD card through the simulated SPI interface, wherein the SPI interface is simulated by using the GPIO interface of the baseband chip;

[0065] In this embodiment, because most of the existing low-cost systems only have GPIO interfaces, and the GPIO interfaces cannot realize communication with the SD card, the MTK6223D system is taken as an example. There is no SPI interface in the baseband chip of the terminal using t...

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Abstract

The invention discloses a method for reading / writing an SD (Secure Digital Memory) card. The method for reading / writing the SD card comprises the following steps of: initializing the SD card through a simulated SPI (Serial Peripheral Interface), wherein the SPI is simulated by using a GPIO (General Purpose Input / Output) interface of a baseband chip; after the SD card is initialized, carrying out a reading / writing operation on the SD card. The invention also discloses a device for reading / writing the SD card. According to the method and the device for reading / writing the SD card, the problem that the hardware cost is obviously increased when reading / writing of the SD card is realized by additionally arranging a chip is solved.

Description

technical field [0001] The invention relates to the technical field of SD card reading and writing, in particular to a method and device for reading and writing an SD card. Background technique [0002] With the development of mobile communication technology, the development of mobile phones is also changing with each passing day. In order to reduce the cost of enterprises and improve their competitiveness, enterprises often develop systems with relatively low costs, but systems with relatively low costs may cause some functions to be unrealizable. Most of the low-cost systems do not have SPI interface but only GPIO interface, and the GPIO interface cannot realize the communication with the SD card, resulting in the inability to realize the operation of the SD card, such as the MTK6223D system. [0003] In order to solve the above-mentioned problem of reading and writing operations of the SD card, a solution of adding another chip is usually adopted to realize the reading an...

Claims

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Application Information

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IPC IPC(8): G06K17/00
CPCG06K17/00
Inventor 赵卫东胡伟吴雄华
Owner SHENZHEN MICRONET FORCE INFORMATION TECH CO LTD
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