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Use buffer to protect SCS from software faults when reading from uC

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To satisfy rule EV 4.11.5

Resolves #4
Resolves #12
This commit is contained in:
Oskar Winkels
2022-11-25 23:45:50 +01:00
parent 4eec043766
commit 711dde5a40
4 changed files with 903 additions and 182 deletions
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99
sdcl-hardware/SDCL.kicad_sch
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@ -20,6 +20,9 @@
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@ -227,23 +234,15 @@
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@ -251,7 +250,7 @@
(effects (font (size 1.27 1.27)) (justify left))
(uuid 8540b694-602f-43b8-83b9-b82b6479d504)
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(pin "To_SDC_relais" output (at 146.05 80.01 0)
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(pin "AS_driving_mode" output (at 106.68 66.04 0)
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(effects (font (size 1.27 1.27)) (justify right))
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(effects (font (size 1.27 1.27)) (justify left))
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@ -681,6 +692,12 @@
(path "/00000000-0000-0000-0000-000061bba8ea/0c9965bf-d700-4f1b-b92b-391ed6b70e26"
(reference "#PWR?") (unit 1) (value "GND") (footprint "")
)
(path "/00000000-0000-0000-0000-000061ad620f/40bf8e40-0bff-47d3-ab81-5ae4bbeade95"
(reference "#PWR?") (unit 1) (value "GND") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/54e2aaaf-edc9-4a7a-94bb-4a9c3927d5db"
(reference "#PWR?") (unit 1) (value "GND") (footprint "")
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(path "/ef87f248-300e-4271-887f-f4d38b41fe25/7de36103-3d8b-43c6-b25b-7aa68cd45394"
(reference "#PWR?") (unit 1) (value "GND") (footprint "")
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@ -702,6 +719,9 @@
(path "/ef87f248-300e-4271-887f-f4d38b41fe25/d9e1eadb-f1e9-4dac-a25f-5a0b53d72c11"
(reference "#PWR?") (unit 1) (value "GND") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/e80a9d63-6ef1-480a-9800-86ca95e480ca"
(reference "#PWR?") (unit 1) (value "+3.3V") (footprint "")
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(path "/00000000-0000-0000-0000-000061bba8ea/f42d7465-9e12-4af1-a1d0-c713491bd188"
(reference "#PWR?") (unit 1) (value "GND") (footprint "")
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@ -780,12 +800,12 @@
(path "/00000000-0000-0000-0000-000061b4e8cf/e99b18c7-daaa-43f0-88ff-d7456b11aca8"
(reference "C?") (unit 1) (value "C_5V") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/eb53e15e-79a5-4cec-99c5-39aeb85e9e17"
(reference "C?") (unit 1) (value "100nF") (footprint "Capacitor_SMD:C_0603_1608Metric_Pad1.05x0.95mm_HandSolder")
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(path "/00000000-0000-0000-0000-000061bba8ea/00000000-0000-0000-0000-000061e0cd10"
(reference "D1") (unit 1) (value "Zener 3V") (footprint "Diode_SMD:D_SOD-323_HandSoldering")
)
(path "/00000000-0000-0000-0000-000061a897b7/00000000-0000-0000-0000-000061b65c4f"
(reference "D4") (unit 1) (value "BAT54HMFH") (footprint "Diode_SMD:D_SOT-23_ANK")
)
(path "/00000000-0000-0000-0000-000061a897b7/00000000-0000-0000-0000-000061beed1b"
(reference "D5") (unit 1) (value "Yellow LED") (footprint "Diode_SMD:D_0603_1608Metric_Pad1.05x0.95mm_HandSolder")
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@ -963,8 +983,29 @@
(path "/00000000-0000-0000-0000-000061ad63d5/00000000-0000-0000-0000-000061b93d23"
(reference "U9") (unit 1) (value "G3VM-61DR1") (footprint "Package_DIP:DIP-4_W7.62mm_SMDSocket_SmallPads")
)
(path "/00000000-0000-0000-0000-000061ad620f/c5552734-6149-45ed-9d69-cce4e7e0503b"
(reference "U?") (unit 1) (value "74HC14") (footprint "")
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(path "/00000000-0000-0000-0000-000061b4e8cf/fad2f278-0632-478b-899a-29b914388a89"
(reference "U?") (unit 1) (value "NCP1117-3.3_SOT223") (footprint "Package_TO_SOT_SMD:SOT-223-3_TabPin2")
)
(path "/00000000-0000-0000-0000-000061ad620f/d9913e95-0de8-4bdf-8406-bbd8f507aaa8"
(reference "U?") (unit 2) (value "74HC14") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/567c2ea1-c2b5-4f5b-9527-6f44bc51548a"
(reference "U?") (unit 3) (value "74HC14") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/2a806248-33dd-4d2e-853b-48d14f04228b"
(reference "U?") (unit 4) (value "74HC14") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/ec8c690e-2714-435a-8a1e-2ac04a01b840"
(reference "U?") (unit 5) (value "74HC14") (footprint "")
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(path "/00000000-0000-0000-0000-000061ad620f/198d4e29-b51d-4000-8fdf-d1d525e271b4"
(reference "U?") (unit 6) (value "74HC14") (footprint "")
)
(path "/00000000-0000-0000-0000-000061ad620f/25b9e719-77fb-4255-8614-8e9527399074"
(reference "U?") (unit 7) (value "74HC14") (footprint "")
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)
)