I2C equipment detection method and device
A device detection and device technology, applied in the computer field, can solve problems such as address pin combination level changes, poor stability and fault tolerance of I2C devices, EEPROM device address changes, etc., to ensure normal work, enhance stability, and improve address The effect of fault tolerance
Inactive Publication Date: 2017-11-07
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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Problems solved by technology
When an event such as an open circuit or a short circuit occurs, the combined level of the address pin may change, resulting in a change in the device address of the EEPROM.
[0004] Once the device address of the I2C device changes, the host connected to the I2C device will not be able to communicate with the I2C device normally, making the I2C device less stable and fault-tolerant, and easily affecting the normal operation of the entire integrated circuit
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[0040] The core of the present invention is to provide an I2C device detection method, which can be applied to address detection devices. Such as figure 1 As shown, the address detection device 110 is connected to the host 120 and multiple I2C devices, such as the I2C device 131 , the I2C device 132 , the I2C device 133 and the I2C device 134 , and the target I2C device is any one of the multiple I2C devices. When the set device detection trigger condition is reached, if the address detection device 110 does not detect the target I2C device using the pre-acquired first address, it may use the pre-acquired backup addresses in the backup address set to detect the target I2C device, To determine the second address corresponding to the current state of the target I2C device. Furthermore, based on the second address, the host 120 can communicate normally with the target I2C device. The address fault tolerance of the I2C device is improved, the stability of the I2C device is enhan...
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The invention discloses an I2C equipment detection method applied to address detection equipment. The method comprises the steps that when set equipment detection trigger conditions are met, a first address obtained in advance is used for detecting target I2C equipment; if the target I2C equipment is not detected, a standby address in a standby address set obtained in advance is used for detecting the I2C equipment; when the standby address is used for detecting the I2C equipment, a second address corresponding to the current state of the I2C equipment is determined so as to achieve communication on the basis of the second address and the I2C equipment. Therefore, even if the address of the I2C equipment is changed, communication with the I2C equipment can still be achieved so that the I2C equipment can still work normally, the address fault tolerance of the I2C equipment is improved, the stability of the I2C equipment is enhanced, and normal work of a whole integrated circuit can be ensured. The invention further discloses an I2C equipment detection device which has the corresponding technical effects.
Description
technical field [0001] The invention relates to the field of computer technology, in particular to an I2C device detection method and device. Background technique [0002] With the continuous development of computer technology, the structures of various integrated circuits are becoming more and more complex, and more and more I2C (Inter-Integrated Circuit, two-wire serial bus) devices are configured in integrated circuits, such as EEPROM (electrically erasable Read-only memory) and various Thermal Sensor ICs (thermal sensor integrated circuits), etc. [0003] The device address of each I2C device generally includes two parts, one part is used to indicate the type and model, this part is determined by the device company when it is produced, and the other part is used for user-defined settings. Taking EEPROM as an example, the custom address part of EEPROM is determined by the combination level of the three address pins of the external IC. When an event such as an open circu...
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IPC IPC(8): G06F11/267G06F11/22G06F13/42
CPCG06F11/221G06F11/267G06F13/4282
Inventor 王志浩
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD