27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
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Install wiringpi to get the `gpio` command:
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```
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apt install wiringpi
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```
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There are five LEDs on the front. The indicate which subsystems work.
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1: An error occurred
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2: Test Error
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3: Test Error
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4: Test Error
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5: Tester is IDLE (also, tester is READY)
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LEDs 2, 3, and 4 form a pattern that indicate which test failed:
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Test name | 2 (Green) | 3 (Blue) | 4 (White) | Reason for Failure |
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====================+===========+===========+===========+====================+
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SPI Valid | | x | x | The SPI flash was not found, or was not the correct model |
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USB Communication | x | | | The FPGA isn't assembled correctly, the USB pullup isn't correct, or the crystal is bad |
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Load Test Bitstream | | | | The FPGA isn't assembled correctly |
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Test SPI | | x | | Not all four wires are connected between the FPGA and the SPI |
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Test RGB | x | x | | TOUCH2 or the RGB LED are not assembled correctly |
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Test Touch | | x | x | TOUCH1, TOUCH3, or TOUCH4 are not assembled correctly |
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Final Bitstream | | | x | The final program could not be loaded |
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