Sim: add --report-temptables option

Teach simulator to calculate temperatures for all possible ADC
values using the compiled-in temperature tables and report the
resulting conversion.  Do no other run-time simulation; exit
after reporting the conversion results.  Output is suitable for
gnuplot for example like this:

  gnuplot --persist -e "plot '< ./sim -T0' u 1:2 with lines,
                             '< ./sim -T1' u 1:2 with lines"

simulator.h

@@ -142,6 +142,7 @@ void sim_error(const char msg[]);
 void sim_assert(bool cond, const char msg[]);
 void sim_gcode_ch(char ch);
 void sim_gcode(const char msg[]);
+void sim_report_temptables(int sensor) ;
 
 /**
  * Initialize simulator timer and set time scale.

simulator/analog_sim.c

@@ -1,15 +1,41 @@
+#include "temp.h"
 #include "analog.h"
 #include "simulator.h"
+#include <stdio.h>
 
 static bool analog_initialised = false;
 
 void analog_init(void) {
-  sim_info("analog_init: not implemented in simulator");
   analog_initialised = true;
 }
 
+static uint16_t analog_read_value = 0;
 uint16_t analog_read(uint8_t channel) {
   sim_assert(analog_initialised, "analog_init() was not called before analog_read()");
   sim_assert(sim_interrupts, "interrupts disabled");
-  return 0;
+  return analog_read_value;
+}
+
+void sim_report_temptables(int sensor) {
+  int i ;
+  temp_sensor_t s, first = sensor, last = sensor+1 ;
+
+  // sensor is a specific sensor or -1 for "all sensors"
+  if (sensor == -1) {
+    first = 0;
+    last = NUM_TEMP_SENSORS;
+  }
+
+  sei();
+  analog_init();
+  printf("; Temperature sensor test %d\n", sensor);
+  for (s = first; s < last; s++ ) {
+    printf("; Sensor %d\n", s);
+    for (i = 0 ; i < 1024 ; i++ ) {
+      analog_read_value = i ;
+      temp_sensor_tick() ;
+      uint16_t temp = temp_get(s);
+      printf("%d %.2f\n", i, ((float)temp)/4 ) ;
+    }
+  }
 }

simulator/simulator.c

@@ -45,7 +45,7 @@ int verbose = 1;                ///< 0=quiet, 1=normal, 2=noisy, 3=debug, etc.
 int trace_gcode = 0;            ///< show gcode on the console
 int trace_pos = 0;              ///< show print head position on the console
 
-const char * shortopts = "qgpvt:o::";
+const char * shortopts = "qgpvt:o::T::";
 struct option opts[] = {
   { "quiet", no_argument, &verbose , 0 },
   { "verbose", no_argument, NULL, 'v' },
@@ -53,6 +53,7 @@ struct option opts[] = {
   { "pos", no_argument, NULL, 'p' },
   { "time-scale", required_argument, NULL, 't' },
   { "tracefile", optional_argument, NULL, 'o' },
+  { "report-temptable", optional_argument, NULL, 'T' },
   { 0, 0, 0, 0 }
 };
 
@@ -65,6 +66,7 @@ static void usage(const char *name) {
   printf("   -p || --pos                   show head position on console\n");
   printf("   -t || --time-scale=n          set time-scale; 0=warp-speed, 1=real-time, 2=half-time, etc.\n");
   printf("   -o || --tracefile[=filename]  write simulator pin trace to 'outfile' (default filename=datalog.out)\n");
+  printf("   -T || --report-temptable=n    Report calculated temperatures for all ADC values and exit\n");
   printf("\n");
   exit(1);
 }
@@ -96,6 +98,9 @@ void sim_start(int argc, char** argv) {
     case 'o':
       recorder_init(optarg ? optarg : "datalog.out");
       break;
+    case 'T':
+      sim_report_temptables(optarg ? atoi(optarg) : -1);
+      exit(0);
     default:
       exit(1);
     }