Wiki » Historie » Version 23
Maximilian Seesslen, 01.10.2024 11:22
| 1 | 1 | Maximilian Seesslen | h1. Wiki |
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| 2 | |||
| 3 | There are some issues that can only be tested via power resets. |
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| 4 | |||
| 5 | * SPI has an issue that it needs retries |
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| 6 | * Looks like configuration I2C EEPROM gets reset to defaults |
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| 7 | 3 | Maximilian Seesslen | * RTC-offline-test (Wie lange haelt die RTC Batterie) |
| 8 | 1 | Maximilian Seesslen | |
| 9 | 3 | Maximilian Seesslen | The device has an CANBus in and an CANBus out. The testsoftware is on the DUT. The DUT sends the command to toggle power line to Awaria via CAN. |
| 10 | The switch-off time has to be an parameter. The RTC-Tests will be complex, the Awaria software shall be simple and generic. |
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| 11 | 2 | Maximilian Seesslen | |
| 12 | An data multiplexer can be used along with a mosfet for power line. |
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| 13 | 13 | Maximilian Seesslen | Data lines for CAN and UART have to be cut. |
| 14 | In order to cut UART, an Debug-Adapter chaining would be needed. Or Uart is available via Host-USB. |
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| 15 | 2 | Maximilian Seesslen | |
| 16 | 15 | Maximilian Seesslen | Optionally controll it via USB from PC, not MCU. Optically isolated GPIOs. |
| 17 | 12 | Maximilian Seesslen | |
| 18 | 14 | Maximilian Seesslen | h1. Problem |
| 19 | |||
| 20 | Circuit does not help at all when power is injected into device via Pullup of RS232. Lines can be disabled too. But whole |
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| 21 | 1 | Maximilian Seesslen | debug connector can cause issues: No debug connection at all. |
| 22 | 15 | Maximilian Seesslen | FPC with UART only? All signals disconnectable? |
| 23 | 14 | Maximilian Seesslen | |
| 24 | 2 | Maximilian Seesslen | h1. Parts |
| 25 | |||
| 26 | * MCU: The smallest thing |
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| 27 | 1 | Maximilian Seesslen | * Multiplexer: |
| 28 | 3 | Maximilian Seesslen | ** MC14551BDG bis zu 1K RON: 1050 |
| 29 | ** TS5A23166DCUR cool, 2 channels, up to 100mA, 1,8-6,5V |
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| 30 | 6 | Maximilian Seesslen | ** Habe: |
| 31 | 7 | Maximilian Seesslen | *** DG408LEDQ-T1-GE3; .#273; 1:8 |
| 32 | 20 | Maximilian Seesslen | *** DG409LEDQ-T1-GE3; .#321; 2x 1:4 |
| 33 | 8 | Maximilian Seesslen | *** ADG736; .#315; 2x1:2 |
| 34 | 20 | Maximilian Seesslen | *** *RS2102XN ADG836YRMZ* Das ist er; 2x |
| 35 | 21 | Maximilian Seesslen | ** MAX4760; 8 Channels; Paarweise schalten |
| 36 | ** TMUX1574 4xSPDT; 1 Schalter |
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| 37 | ** PI5C3257QE; 4xSPDT; 1 Schalter; 0.229€ |
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| 38 | 6 | Maximilian Seesslen | |
| 39 | 5 | Maximilian Seesslen | * Big EEPROM, device can store test info from DUT |
| 40 | 4 | Maximilian Seesslen | |
| 41 | Spannungs/Strom zu umstaendlich. |
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| 42 | 10 | Maximilian Seesslen | |
| 43 | h1. RTC-Tests |
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| 44 | |||
| 45 | Can have a region in SPI-Flash. |
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| 46 | 11 | Maximilian Seesslen | If the Settings are not ok, just have an terminal. |
| 47 | The test can only be started from terminal. |
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| 48 | rebootTest <startTime> |
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| 49 | |||
| 50 | 10 | Maximilian Seesslen | Start. |
| 51 | * Cut 2 Seconds. Time OK? |
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| 52 | * Cut 4 Seconds. Time OK? |
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| 53 | 1 | Maximilian Seesslen | * Cut 8 Seconds. Time OK? |
| 54 | 11 | Maximilian Seesslen | |
| 55 | When it fails, "destroy" test-config in spi flash |
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| 56 | 12 | Maximilian Seesslen | |
| 57 | h1. Connectors |
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| 58 | |||
| 59 | * CANBus-In |
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| 60 | * CANBus.Out |
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| 61 | * Power in |
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| 62 | * Power out |
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| 63 | 17 | Maximilian Seesslen | * -USB PC to MCU- |
| 64 | * -USB PC to DUT- |
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| 65 | |||
| 66 | Debug, CAN, power only? |
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| 67 | CAN-Geraete koennten auch standalone laufen, Testsoftware auf PC. |
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| 68 | 18 | Maximilian Seesslen | |
| 69 | |||
| 70 | 2x Uart |
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| 71 | 2x SWD |
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| 72 | 1x Reset |
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| 73 | 19 | Maximilian Seesslen | 1x Boot0 |
| 74 | 2x CAN |
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| 75 | 22 | Maximilian Seesslen | (DEBUG: VDD_5VIN, GND, VDD_TGT, SWO) |
| 76 | 23 | Maximilian Seesslen | |
| 77 | USB schalten is overkill, andere Platine. |