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Method for reading and writing T card through GPIO port, system and mobile phone

A file system, SPI bus technology, applied in wireless communication, electrical components, instruments, etc., can solve problems such as inability to support T card operation and user inconvenience

Inactive Publication Date: 2009-09-02
KONKA GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally, mobile phones that support T-card access the data on the T-card through the built-in T-card controller module of the baseband chip, but there are also many relatively low-end baseband chips that have no built-in T-card controller module. Can not support T card operation, which brings inconvenience to users

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  • Method for reading and writing T card through GPIO port, system and mobile phone
  • Method for reading and writing T card through GPIO port, system and mobile phone
  • Method for reading and writing T card through GPIO port, system and mobile phone

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Embodiment Construction

[0045] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0046] The system control structure diagram of reading the T card through the GPIO port of the embodiment of the present invention is as figure 1 shown. figure 1 The upper-level file system in the mobile phone mainly refers to the system of the baseband chip in the mobile phone. The interface control module uses software to simulate the SPI bus sequence, which interfaces upwardly with the upper-level file system, downwardly with the GPIO port in the processor chip in the mobile phone, and then The GPIO port is connected with the T card to realize the read and write operations of the upper file system to the T card. That is, the interface control module in the system and the GPIO port are combined to realize the function of the T-card controller in the prior art. Because the timing of the SPI bus is simulated by software, the GPIO port on...

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Abstract

The invention discloses a method for reading and writing a T card through a GPIO port, a system and a mobile phone. The system comprises a top-level file system, a processor chip and the T card, wherein the system also comprises an interface controlling module used for simulating SPI bus timing; and the interface controlling module receives a data operating command from the top-level file system to the T card and is connected with the T card through the GPIO port on the processor chip so as to read and write the T card. The method and the system can make the mobile phone without a T card controller module support the T card to read and write, and the mobile phone with the built-in T card controller module can realize double T cards in the mode, so the proposal has extremely strong expandability, breaks through the restriction of chip hardware functions and has quite wide application occasions.

Description

technical field [0001] The invention relates to a mobile phone, in particular to a method for reading and writing a T card in the mobile phone, a system and the mobile phone. Background technique [0002] At present, Micro Secure Digital Memory Card (Micro Secure Digital Memory Card, Micro SD card), referred to as SD card or T card, is a new generation memory device based on semiconductor flash memory. It is widely used in portable devices and is also a A mobile memory card widely used in mobile phones. The same SD card can be used in different models of mobile phones, so that mobile phone manufacturers no longer have to worry about the development and design of plug-in cards. [0003] According to the SD card protocol, the data transmission of the T card can support two bus modes: one is the SD bus mode with cyclic redundancy check (Cyclical Redundancy Check, CRC), and the other is a synchronous serial communication interface (Serial Peripheral Interface, SPI) bus mode, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/02G06F13/38
Inventor 符乐安
Owner KONKA GROUP
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