Добавить непрерывные окна и цифровой триггер Scope

c/logic-scope/README.md

@@ -19,3 +19,5 @@ Its `tests/test_logic_scope.c` checks the capture plan, phase-shifted PWM,
 constant inputs, menu selection, retained snapshots, and renderer bounds.
 
 `include/scope_decoders.h` contains the portable DSView catalogue/configuration/annotation model; the isolated ARM adapter is in `tools/scope-decoders`. The framebuffer UI and UIO acquisition live in the Zynq board project.
+
+`include/logic_stream.h` assembles contiguous stream blocks into bounded windows, checks block sequence, preserves trigger edges across block boundaries, and stops after one window in SINGLE. FREE/RISE/FALL/HIGH/LOW use an explicitly selected D0-D7 input. Frame publication is independent of how many windows the display renders. The board integration owns DMA acknowledgement, overflow handling and exclusive UIO access.

c/logic-scope/include/logic_scope.h

@@ -9,6 +9,9 @@ typedef struct {
     uint8_t samples[LOGIC_SCOPE_MAX];
     unsigned mode[8]; /* 0 off, 1 logic, 2 PWM envelope */
     unsigned count, clock, divider, running, single, generation;
+    unsigned trigger_mode, trigger_channel; /* FREE, RISE, FALL, HIGH, LOW */
+    unsigned stream, stream_rate; /* Separate acquisition mode; rate 0 follows timebase. */
+    uint64_t stream_samples;
     double origin_s;
     char status[96];
 } LogicScope;

c/logic-scope/include/logic_stream.h

@@ -0,0 +1,37 @@
+#ifndef SET_LOGIC_STREAM_H
+#define SET_LOGIC_STREAM_H
+#include "logic_scope.h"
+typedef struct { uint8_t pending[LOGIC_SCOPE_MAX]; unsigned filled,target,previous,have_previous,triggered,sequence; } LogicStream;
+static inline unsigned logic_stream_divider(double span,unsigned rate) {
+ static const unsigned fixed[]={0,1000,100,20,10};
+ if(rate>0&&rate<5)return fixed[rate];
+ double value=ceil(span*100000000.0/LOGIC_SCOPE_MAX);
+ return !isfinite(value)||value<10?10:value>65535?65535:(unsigned)value;
+}
+static inline void logic_stream_reset(LogicStream *state,unsigned target) {
+ memset(state,0,sizeof(*state));state->target=target<1?1:target>LOGIC_SCOPE_MAX?LOGIC_SCOPE_MAX:target;
+}
+static inline int logic_stream_match(unsigned mode,unsigned previous,unsigned current,unsigned valid,unsigned channel) {
+ unsigned mask=1u<<(channel&7),a=previous&mask,b=current&mask;
+ return !mode || (mode==1&&valid&&!a&&b)||(mode==2&&valid&&a&&!b)||(mode==3&&b)||(mode==4&&!b);
+}
+/* Sequence continuity is checked before touching the displayed frame. */
+static inline int logic_stream_feed(LogicStream *state,LogicScope *scope,unsigned sequence,const uint8_t *bytes,unsigned count) {
+ if(sequence!=state->sequence)return -1;
+ ++state->sequence;scope->stream_samples+=count;int updated=0;
+ unsigned i=0;
+ while(i<count){
+  while(!state->triggered&&i<count){unsigned current=bytes[i];
+   state->triggered=logic_stream_match(scope->trigger_mode,state->previous,current,state->have_previous,scope->trigger_channel);
+   if(!state->triggered){state->previous=current;state->have_previous=1;++i;}
+  }
+  if(i==count)break;
+  unsigned take=state->target-state->filled;if(take>count-i)take=count-i;
+  memcpy(state->pending+state->filled,bytes+i,take);state->filled+=take;i+=take;
+  state->previous=bytes[i-1];state->have_previous=1;
+  if(state->filled==state->target){memcpy(scope->samples,state->pending,state->target);scope->count=state->target;scope->origin_s=0;++scope->generation;updated=1;state->filled=0;state->triggered=0;
+   if(scope->single){scope->single=scope->running=0;break;}
+  }
+ }return updated;
+}
+#endif