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Hot-swappable sd card data recorder and corresponding method based on spi mode

A data recorder, hot-swappable technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of WSN embedded processing capacity is limited, does not support SD card SD mode, etc., to achieve simple and convenient operation, low hardware and software costs low effect

Active Publication Date: 2017-12-22
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the WSN embedded processing capability is limited. The common WSN network is based on CC2530 and CC2430, but these microprocessors do not support the SD mode of the SD card.

Method used

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  • Hot-swappable sd card data recorder and corresponding method based on spi mode
  • Hot-swappable sd card data recorder and corresponding method based on spi mode

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0025] There are two ways for the SD card to communicate with the microprocessor: SPI and SD mode. When the microprocessor cannot support the SD mode, the use of the SPI mode can greatly simplify the circuit and save costs.

[0026] According to an aspect of the present invention, propose a kind of hot-swappable SD card data logger based on SPI mode, figure 1 Be the hardware circuit schematic diagram of the hot-swappable SD card data logger based on SPI mode of the present invention, as figure 1 As shown, under the SPI (Serial Peripheral Interface, serial peripheral interface) mode, the CS (chip select) chip select signal end of the SD card of the SD card data logger is connected to the pin GPIO of the central processing ...

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Abstract

The invention discloses a hot-swappable SD card data recorder based on SPI mode. The CS chip selection signal terminal of the SD card of the SD card data recorder is connected to the pin GPIO P1.4 of the central processing unit; the DI data input terminal Connect the pin GPIO P3.2 of the central processing unit; the DO data output end connects the pin GPIO P3.3 of the central processing unit; the SCLK clock terminal connects the pin GPIO P3.4 of the central processing unit. The invention also discloses a method for hot plugging and unplugging the SD card data recorder based on the SPI mode. The invention realizes the hot plug function of the SD card data recorder through a simple and ingenious method under the SPI mode.

Description

technical field [0001] The invention relates to the technical fields of data storage such as image processing, driving record, biomedicine, communication, etc., in particular to a hot-swappable SD card data recorder based on SPI mode and a corresponding method. Background technique [0002] With the rapid development of information processing technology and communication technology, real-time and reliable data recorders are used in more and more occasions, such as the use of WSN (Wireless Sensor Network) Wide-area multi-target real-time monitoring, and real-time aggregation, transmission and storage of status data have important research significance and great practical value in many fields such as industrial and agricultural monitoring, intelligent transportation, smart home, and remote detection in dangerous areas. However, the WSN embedded processing capability is limited. Common WSN networks are based on CC2530 and CC2430, but these microprocessors do not support the SD ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40
Inventor 谢刚丁时栋李贵柯赵柏秦吴南健
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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