A test method for inertial measurement unit output based on spi bus communication protocol
A technology of inertial measurement unit and SPI bus, which is applied in the direction of measuring devices and instruments, can solve problems such as high bit error rate, and achieve the effect of saving cost and improving test efficiency
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[0019] A specific embodiment of the method of the present invention is given below.
[0020] (1) Connect the test equipment to the inertial measurement unit output by three sets of SPI bus communication protocols, such as figure 1 As shown; the connection of three sets of inertial measurement unit and test equipment includes MISO (test equipment data input, inertial measurement unit data output), MOSI (test equipment data output, inertial measurement unit data input), SCK (clock signal, by the test equipment Generated), SS (chip select, inertial measurement unit enable signal, controlled by the test equipment). The test equipment can respectively enable the IMU 1 , IMU 2 , and IMU 3 through different chip select pins SS1 , SS2 , and SS3 .
[0021] (2) Connect the serial port on the test equipment to the test computer, such as figure 2 shown.
[0022] (3) When the system is powered on, the chip select signals SS1, SS2, and SS3 of the test equipment are all at high level.
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