27 lines
1005 B
Plaintext
27 lines
1005 B
Plaintext
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I2C Test For Microchip board
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############################
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This application test is used to test the I2C driver on Microchip
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mec172xevb_assy6906 board.
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Board Hardware Setup
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####################
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As the I2C slave device NXP pca95xx on mec172xevb_assy6906 is connected
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to I2C00 port, however, I2C00 port is shared with UART2 RS232 to TTL
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converter used to catch serial log, so it's not possible to use UART2
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and I2C00 port simultaneously.
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We need to change to use I2C01 port by making some jumpers setting as below:
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* JP49 1-2 Connected Connect PCA9555 VCC to +3.3V_STBY
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* JP53 1-2 Connected Select address 0100b, which means 0x26
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* JP12 13-14 Connected Connect I2C01_SDA from CPU to header J20
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* JP12 4-5 Connected Connect I2C01_SCL from CPU to header J20
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* JP77 7-8 Connected External pull-up for I2C01_SDA
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* JP77 9-10 Connected External pull-up for I2C01_SCL
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* JP58.1 J20.1 Connected Connect NXP PCA95xx to I2C01
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* JP58.3 J20.3 Connected Connect NXP PCA95xx to I2C01
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