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EMB:010117Ideal 12-bit ADC over [0,3.3V] maps 2.2V to 2730, 1.65V to 2048, 3.3V to 4095; code 2730 occupies [9009/4096, 90123/40960)

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Emb Adc Saturating Floor CodeEmb Adc Half Open Bin Midpoint

Microcontrollers, memory-mapped I/O, and peripheralsEmbedded Systems · Mixed review

EMB:010118Little-endian 30 0D encodes signed Q4 -45; A0 02 encodes 42; packed word 0x02A00D30; mean -3/2

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Emb LE Twelve Bit Signed ExtractEmb Q4 Pack And Mean

Microcontrollers, memory-mapped I/O, and peripheralsEmbedded Systems · Mixed review

EMB:010219Split-32 increment 0x0001FFFF to 0x00020000 can tear to 0x00010000; seqlock 10 to 11 to 12 yields only old or new

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Emb Torn Split32 WitnessEmb Seqlock Even Equal Accept

Interrupts, concurrency, and shared stateEmbedded Systems · Mixed review

EMB:010220L(C6) at t0, M(C4) at t1, H(C2) at t2 run L[0,1], M[1,2], H[2,4], M[4,7], L[7,12]; responses 12, 6, 2; nest 3

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Emb Fixed Priority Preempt TraceEmb Response Time And Nesting

Interrupts, concurrency, and shared stateEmbedded Systems · Mixed review

EMB:010221FIFO cap 4, produce at 3k, consume at 5k, producer first on ties; first overflow at t=30 with 10 attempts, 9 successes, 6 consumed, occupancy 3

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Emb Fifo Producer First TraceEmb Rate Implies Eventual Overflow

Interrupts, concurrency, and shared stateEmbedded Systems · Mixed review

EMB:01032216-bit counter 65530 plus delay 20 wraps to target 14; elapsed 11,19,20; naive now>=14 fires now

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Emb U16 Wrap Deadline TargetEmb U16 Modular Elapsed Signed Half

Timers, scheduling, and real-time constraintsEmbedded Systems · Mixed review

EMB:01032310 MHz into exact-average 3 kHz uses 3333,3333,3334 with phase -1/3,-2/3,0 and 10000 clocks per 3 ticks

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Emb Bresenham Divider PatternEmb Interval Error Phase Close

Timers, scheduling, and real-time constraintsEmbedded Systems · Mixed review

EMB:010424UART 8N1 at 115200 carries 11520 B/s; a 68-byte frame is 680 bits in 17/2880 s, 100 pkt/s uses 85/144, max 169

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Emb Uart 8n1 Byte And Packet TimeEmb Uart Utilization And Max Rate

Serial buses and communication protocolsEmbedded Systems · Mixed review

EMB:010425Dominant-zero arbitration of 1011000 vs 1010000 differs at bit 4: bus 0, A loses, B wins with 1010000

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Emb Dominant Zero First DifferenceEmb Arbitration Loser Winner

Serial buses and communication protocolsEmbedded Systems · Mixed review

EMB:010426Selective-repeat with 3-bit sequence numbers needs W<=4; W=5 makes the next window {5,6,7,0,1} overlap delayed 0,1

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Emb SR Window Half ModulusEmb SR Wrap Overlap Witness

Serial buses and communication protocolsEmbedded Systems · Mixed review

EMB:010527A u8,u32,u16 record pads to offsets 0,4,8 and size 12; reordering to u32,u16,u8 yields 0,4,6 and size 8, saving 400 B over 100 records

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Emb C Struct Natural Alignment OffsetsEmb C Struct Reorder Tail Pad Savings

Memory, energy, and reliability budgetsEmbedded Systems · Mixed review

EMB:010528Deepest stack is 32+48+16 plus 64 plus 40 = 200 B; from 0x20001000 the SP is 0x20000F38, a 256 B region leaves 56 B, and a 32 B reserve leaves 24 B

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Emb Nested Isr Stack SumEmb Downward SP Watermark Reserve

Memory, energy, and reliability budgetsEmbedded Systems · Mixed review

EMB:010529One update a minute on 16 pages of endurance 1000 lasts 1000 min unleveled, 16000 min = 100/9 days leveled, and 14000 min = 175/18 days with two reserved pages

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Emb Flash Single Page Versus LevelingEmb Flash Reserved Page Lifetime Days

Memory, energy, and reliability budgetsEmbedded Systems · Mixed review

EMB:010630Guarded two-door opens and closes preserve not(L&&R) by induction on {00,10,01}; non-atomic simultaneous opens from 00 reach 11

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Emb Interlock Reachable Set InductionEmb Simultaneous Unguarded Open Race

State-machine verification and safety boundariesEmbedded Systems · Mixed review

EMB:010631Monitor OK-1->SUSPECT-1->SAFE, a match 0 resets SUSPECT, SAFE is absorbing with output 0; input 0,1,0,1,1 yields OK,SUSPECT,OK,SUSPECT,SAFE

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Emb Two Mismatch Monitor TraceEmb Absorbing Safe Isolated Mismatch

State-machine verification and safety boundariesEmbedded Systems · Mixed review