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337 lines
12 KiB
Markdown
337 lines
12 KiB
Markdown
# TK-1 and TP-1 production tests
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Production tests for the TK-1 and TP-1 PCBs
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## Usage
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These instructions are tested on Ubuntu 22.10.
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Set up a python virtualenv to run the production test:
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sudo apt install python3.10-venv
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python3 -m venv venv
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source venv/bin/activate
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pip install -r requirements.txt
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deactivate
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To run the production test script:
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source venv/bin/activate
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./production_test.py
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The script will then print a menu with all available tests:
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Tillitis TK-1 and TP-1 Production tests
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=== Test sequences ===
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1. tk1_test_sequence: voltage_test, flash_validate_id, flash_program, sleep_2, test_extra_io, ch552_program, test_txrx_touchpad
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2. tp1_test_sequence: program_pico, sleep_2, flash_validate_id
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3. mta1_usb_v1_programmer_test_sequence: program_pico, sleep_2, voltage_test, flash_validate_id, sleep_2, test_extra_io
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=== Manual tests ===
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4. program_pico: Load the ice40 flasher firmware onto the TP-1
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5. voltage_test: Measure 3.3V 2.5V, and 1.2V voltage rails on the TK-1
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6. flash_validate_id: Read the ID from TK-1 SPI flash, and verify that it matches the expected value
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7. flash_program: Program and verify the TK-1 SPI flash with the application test gateware
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8. flash_check: Verify the TK-1 SPI flash is programmed with the application test gateware
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9. test_extra_io: Test the TK-1 RTS, CTS, and GPIO1-4 lines by measuring a test pattern generated by the app_test gateware
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10. ch552_program: Load the CDC ACM firmware onto a CH552 with a randomly generated serial number, and verify that it boots correctly
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11. test_txrx_touchpad: Test UART communication, RGB LED, and touchpad by asking the operator to interact with the touch pad
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12. enable_power: Enable power to the TK-1
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13. disable_power: Disable power to the TK-1
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Please type an option number and press return:
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There are two types of tests listed: test sequences, which are used
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to run full production tests, and manual tests, which are used to
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test a single subcircuit. It is recommended to test all boards using
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a test sequence first, and to use the manual tests for diagnosing
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issues with individual boards, or for re-testing repaired boards.
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## Test Sequences
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These sequences are used as production tests for the TK-1 and TP-1.
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### TK-1 production test (tk1_test_sequence)
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This test checks all major subcircuits on the TK-1, and is used to
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verify that the PCBA was assembled correctly. It should be run on all
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newly assembled TK-1 boards.
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Requirements:
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* Programmed MTA1_USB_V1_Programmer board, fitted with a wider (green)
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plastic clip
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* Unprogrammed TK-1
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* USB micro cable to attach TP-1 board to computer
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* USB C extension cable to attach TK-1 to computer
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It runs the following tests, in order:
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1. voltage_test
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2. flash_validate_id
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3. flash_program
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4. sleep_2
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5. test_extra_io
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6. ch552_program
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7. test_txrx_touchpad
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Note: If the CH552 has been programmed already, then the test
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sequence will fail. In that case, manually run the other tests
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in the sequence, skipping the 'ch554_program' test.
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### TP-1 (tp1_test_sequence)
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This test programs a TP-1, then tests that it can program a TK-1.
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It should be run on all newly assembled TP-1 boards.
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Requirements:
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* Unprogrammed TP-1
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* TK-1 programmed with the application test gateware
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* USB micro cable to attach TP-1 board to computer
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The TP-1 production test runs the following tests, in order:
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1. program_pico
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2. sleep_2
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3. flash_validate_id
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### MTA1_USB_V1_Programmer (mta1_usb_v1_programmer_test_sequence)
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Requirements:
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* Unprogrammed MTA1_USB_V1_Programmer
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* TK-1 programmed with the application test gateware
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* USB micro cable to attach MTA1_USB_V1_Programmer board to computer
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The TP-1 production test runs the following tests, in order:
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1. program_pico
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2. sleep_2
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3. voltage_test
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4. flash_validate_id
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5. sleep_2
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6. test_extra_io
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## Individual tests
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These tests target a specific sub-circuit or funcationality on the
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TP-1 and TK-1. Each test is designed to be run successfully in
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isolation.
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### program_pico: Load the ice40 flasher firmware onto the TP-1
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This test loads the ice40_flasher firmware into the TP-1.
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Usage instructions:
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1. Attach an unprogrammed TP-1 to the computer using a micro USB
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cable.
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2. Run the test.
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3. The test program will copy the firmware onto the TP-1.
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4. Once the firmware is copied, the TP-1 will automatically reset,
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and re-initialize as a ice40_flasher.
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Notes:
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* This test assumes that the computer is configured to auto-mount USB
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storage devices, and that the Pico will be mounted to
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/media/lab/RPI-RP2. This is true for a computer runnnig Ubuntu 22.10
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when a user is logged into a Gnome GUI session. The script will need
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to be adjusted for other environments.
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### voltage_test: Measure 3.3V 2.5V, and 1.2V voltage rails on the TK-1
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This test uses ADC in the Pico to measure the power supplies on the
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TK-1. It samples the voltage of each power supply multiple times,
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averages the result, and verifies that they are within +/-0.2V of the
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specification.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer to the computer
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using a micro USB cable.
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2. Place a TK-1 into the MTA1_USB_V1_Programmer. The TK-1 can be
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programmed or unprogrammed.
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3. Run the test.
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4. The test will use the MTA1_USB_V1_Programmer to power on the TK-1,
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measure the voltage rails, then power off the TK-1.
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5. The test will report the measurements and pass/fail metric.
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Notes:
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* The accuracy of the ADC is poor; external hardware would be
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required to do a more extensive test. The power supplies used are
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all fixed-voltage devices, so the chance of of an off-spec (but
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still working) device is considered to be low.
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* This test does not verify that the power sequencing is correct.
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### flash_validate_id: Read the ID from TK-1 SPI flash, and verify that it's not all 0's or 1's
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This test uses the TP-1 or MTA1_USB_V1_Programmer to read a TK-1 SPI
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flash ID. It can be used to quickly check if a TK-1 device is
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inserted properly into the programmger.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer or TP-1 to the
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computer using a micro USB cable.
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2. Place a TK-1 into the MTA1_USB_V1_Programmer. The TK-1 can be
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programmed or unprogrammed.
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3. Run the test.
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4. The test will use the programmer to power on the TP-1, read out
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the SPI flash ID, then power off the TK-1.
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5. The test will check if the flash ID matches any known valid flash
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ID types.
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6. If the flash ID matches an known value, the test will print the
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type and return a pass metric.
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7. If the flash ID does not match a known value, the test will print
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the type and return a pass metric.
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Notes:
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* An earlier version of this test just checked if the flash ID was
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0x00000000 or 0xFFFFFFFF; this version is more exact.
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### flash_program: Program and verify the TK-1 SPI flash with the application test gateware
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This test uses the TP-1 or MTA1_USB_V1_Programmer to write the
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application test gateware a TK-1 SPI flash. This gateware is needed
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to run the test_extra_io and test_txrx_touchpad tests. The test uses
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the external iceprog utility to perform the flash operation.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer or TP-1 to the
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computer using a micro USB cable.
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2. Place a TK-1 into the MTA1_USB_V1_Programmer. The TK-1 can be
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programmed or unprogrammed.
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3. Run the test.
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4. The test will use the programmer to power on the TP-1, program the
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SPI flash with the gateware, verify the flash by reading the data
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back out, then power off the TK-1.
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5. The test will report a pass/fail metric vased on the result of the
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verification phase.
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### flash_check: Verify the TK-1 SPI flash is programmed with the application test gateware
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This test uses the TP-1 or MTA1_USB_V1_Programmer to verify that the
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application test gateware is written to a TK-1 SPI flash. The test
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uses the external iceprog utility to perform the verification
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operation.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer or TP-1 to the
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computer using a micro USB cable.
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2. Place a programmed TK-1 into the MTA1_USB_V1_Programmer.
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3. Run the test.
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4. The test will use the programmer to power on the TP-1, verify the
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flash by reading the data back out, then power off the TK-1.
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5. The test will report a pass/fail metric vased on the result of the
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verification phase.
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### test_extra_io: Test the TK-1 RTS, CTS, and GPIO1-4 lines by measuring a test pattern generated by the app_test gateware
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This test uses MTA1_USB_V1_Programmer to verify that the RTS, CTS, and
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GPIO1-4 lines are connected correctly to the ICE40 FPGA.
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On the FPGA side, the application gateware implements a simple state
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machine for this test. The RTS line is configured as an input, and
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the CTS, GPIO1, GPIO2, GPIO3, and GPIO4 lines are configured as
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outputs. The values of the outputs are configured so that only one
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output is high at a time, while the rest are low. After reset, the
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GPIO4 line is high. Each time the RTS line is toggled, the next
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output on the list is set high.
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On the programmer side, the Pico GPIO pin connected to the TK-1 RTS
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line is configured as an output, and the Pico GPIO pins connected to
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the other TK-1 line are configured as inputs. The pico checks that
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each input line is working by cycling the RTS output high and low,
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then reading the values of each input. This process is repeated 5
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times until all output lines are measured, then the results are
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compared to a table of expected values.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer or TP-1 to the
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computer using a micro USB cable.
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2. Place a programmed TK-1 into the MTA1_USB_V1_Programmer.
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3. Run the test.
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4. The test will use the programmer to power on the TP-1, run the IO
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test, then power off the TK-1.
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5. The test will report a pass/fail metric vased on the result of the
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test.
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### ch552_program: Load the CDC ACM firmware onto a CH552 with a randomly generated serial number, and verify that it boots correctly
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TODO
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### test_txrx_touchpad: Test UART communication, RGB LED, and touchpad by asking the operator to interact with the touch pad
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TODO
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### enable_power: Enable power to the TK-1
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This test uses the TP-1 or MTA1_USB_V1_Programmer to enable power to
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an attached TK-1. This isn't a functional test, but can be used for
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manual testing such as measuring voltage rails with a multimeter,
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probing clock signals with an oscilloscope, etc.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer or TP-1 to the
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computer using a micro USB cable.
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2. Place a TK-1 into the MTA1_USB_V1_Programmer. The TK-1 can be
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programmed or unprogrammed.
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3. Run the test.
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4. The test will use the programmer to power on the TP-1
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5. The test will report a pass metric if the command completed
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successfully.
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### disable_power: Disable power to the TK-1
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This test uses the TP-1 or MTA1_USB_V1_Programmer to disable power to
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an attached TK-1. This isn't a functional test, but can be used after
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the enable_power command was used to turn on a device.
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Usage instructions:
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1. Attach a programmed/tested MTA1_USB_V1_Programmer or TP-1 to the
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computer using a micro USB cable.
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2. Place a TK-1 into the MTA1_USB_V1_Programmer. The TK-1 can be
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programmed or unprogrammed.
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3. Run the test.
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4. The test will use the programmer to power off the TP-1
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5. The test will report a pass metric if the command completed
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successfully.
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## Firmware binaries
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To make the test environment easier to set up, some pre-compiled
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binares are included in the binaries/ subdirectory. These can also be
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built from source, by following the below instructions.
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Before building the firmware, follow the [toolchain setup](https://github.com/tillitis/tillitis-key1/blob/main/doc/toolchain_setup.md)
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instructions.
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### CH552 firmware
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See the build instructions in the
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[ch552_fw](../usb_interface/ch552_fw/README.md) directory.
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### Test Application gateware
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This uses the Symbiflow toolchain:
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cd ~/tillitis-key1/hw/production_test/application_fpga_test_gateware
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make
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cp top.bin ../binaries/
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### TP-1 Raspberry Pi Pico firmware
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Follow the instructions in the [ice40_flasher](https://github.com/Blinkinlabs/ice40_flasher#building-the-firmware)
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repository, then copy the output 'main.uf2' file to the binaries
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directory.
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