Eval » Historie » Version 5
Maximilian Seesslen, 24.01.2023 14:25
| 1 | 1 | Maximilian Seesslen | h1. Eval |
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| 2 | |||
| 3 | Monitor Sensors over longer time. |
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| 4 | * Temperature |
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| 5 | * Air quality |
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| 6 | * Plant sensors |
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| 7 | |||
| 8 | MCU is 256K. Could even store XML. |
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| 9 | |||
| 10 | * Timestamp |
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| 11 | * CAN-ID + Sub-ID |
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| 12 | * Values interpreted as Text |
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| 13 | * CSV better because its always finished |
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| 14 | 2 | Maximilian Seesslen | |
| 15 | h2. Step1 |
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| 16 | |||
| 17 | * Main first target is to monitor plants over longer range of time |
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| 18 | * target is csv output |
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| 19 | * Tatsaechlich kann er ziemlich stupide alles ausgeben; TDT interpretiert |
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| 20 | 3 | Maximilian Seesslen | * Eigene Temperaturwerte natuerlich. Werden ja schon verschickt. Dann kommt das halt noch mit in die SD |
| 21 | 5 | Maximilian Seesslen | |
| 22 | |||
| 23 | STM32L431RCT6 with QUAD-SPI-Flash (Memory-mapped) and SD-Card-Slot. |
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| 24 | "MCU":https://www.st.com/resource/en/datasheet/stm32l431rc.pdf |
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| 25 | |||
| 26 | [[Eval]] |
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| 27 | * The block size is 512 Bytes; it will be erased automatically? |
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| 28 | * plain ascii: "2012-06-01 01:00, 1, 3" |
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| 29 | ** quite difficult to find the end. |
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| 30 | ** need to manipulate it afterwards for gnuplot anyway |
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| 31 | |||
| 32 | * Record any received object vs. perooidically log all objects |
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| 33 | ** Replay would need all received objects |
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| 34 | * Bind it to TDT? |
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| 35 | |||
| 36 | Header |
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| 37 | 1B Magick 'B' |
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| 38 | 1B Number of Stamps |
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| 39 | 2B reserved |
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| 40 | 4B Block number |
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| 41 | 4B CRC32 |
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| 42 | |||
| 43 | 1B Magick 'S' |
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| 44 | 2B Year |
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| 45 | 1B Month |
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| 46 | 1B Day |
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| 47 | 1B Your |
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| 48 | 1B Minute |
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| 49 | 1B Second |
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| 50 | --- 8B |
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| 51 | 4B Node |
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| 52 | 4B Object |
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| 53 | 1B Data Unit |
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| 54 | 1B Data Type |
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| 55 | 4B Value |
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| 56 | |||
| 57 | Ca. 0x20 Bytes per stamp; 16 Stamps per block |
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| 58 | |||
| 59 | h1. Todos |
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| 60 | |||
| 61 | * Behaviour of erasing/writing |
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| 62 | ** I can only write complete block/512B? |
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| 63 | ** Have to erase blocks? Why are they '0'; |
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| 64 | * implement 'sd' command |
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| 65 | ** 'e'rasae |
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| 66 | ** 'w'rite |
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| 67 | ** 'r'ead |
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| 68 | ** 'd'ump |
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| 69 | |||
| 70 | |||
| 71 | h1. Dump |
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| 72 | |||
| 73 | * Filter Node-ID and Object |
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| 74 | |||
| 75 | h1. Ablauf |
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| 76 | |||
| 77 | * Start with start-block from config if available |
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| 78 | * Search first free block |
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| 79 | * Store it in config |
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| 80 | * Collect stamps/opjects |
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| 81 | * Write block |