IIC device address detection method and device
A device address and detection method technology, applied in the direction of instrumentation, electrical digital data processing, etc., can solve problems such as IIC device allocation errors, waste of access resources, and abnormal IIC device access
Inactive Publication Date: 2015-01-21
LONTIUM SEMICON CORP
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[0003] Theoretically, a maximum of 128 IIC devices can be associated with the IIC bus, and the device addresses of the associated IIC devices are different; the range of the device addresses can be 0 to 127. In the actual allocation process of the IIC device address, the operation Due to operating errors, personnel will assign wrong device addresses to some IIC devices, or forget to assign device addresses to IIC devices; resulting in abnormal access to these IIC devices, wasting access resources
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[0054] The core of the present invention is to provide an IIC device address detection method, which can quickly filter out valid IIC device addresses from all IIC device addresses, and improve work efficiency.
[0055] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0056] Because of its simplicity, IIC integrated circuit bus communication is widely used in electronic systems to store various parameter configuration information. The IIC bus has two bus lines, one is the serial data line (SDA) and the other is the...
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The invention discloses an integrated circuit bus IIC device address detection method used for screening effective IIC device addresses. The method includes the following steps: sequentially detecting device addresses of all the IIC devices correlated on an integrated circuit bus according to the preset detection sequence, wherein the detection operation includes accessing the IIC devices according to the device addresses that the IIC devices correspond to; determining that the device addresses that the IIC devices correspond to are the effective device addresses when the access is successful. An IIC device address detection device corresponding to the method is further disclosed. By means of the method, the effective IIC device addresses can be screened quickly from the device addresses that all the IIC devices correspond to, and the method saves time and is high in efficiency.
Description
technical field [0001] The invention relates to the field of integrated circuit buses, in particular to a method and device for detecting an IIC device address. Background technique [0002] The integrated circuit bus IIC is a simple, bidirectional, binary, synchronous serial control bus developed by PHILIPS. IIC bus communication is used to save various parameter configuration information and is widely used in various electronic systems. When debugging these electronic systems, it is necessary to obtain relevant information through the associated IIC devices on the IIC bus. Every IIC device on the IIC bus Has an independent device address. [0003] Theoretically, a maximum of 128 IIC devices can be associated with the IIC bus, and the device addresses of the associated IIC devices are different; the range of the device addresses can be 0 to 127. In the actual allocation process of the IIC device address, the operation Due to operating errors, personnel will assign wrong d...
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IPC IPC(8): G06F13/10
CPCG06F13/10
Inventor 张俊
Owner LONTIUM SEMICON CORP