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Diff Revisions 2 vs 3 for /trunk/amptimer.cpp

Diff revisions: vs.
  @@ -10,26 +10,26 @@
10 10
11 11 struct SSweep
12 12 {
13 - bool enable;
13 + bool enable;
14 14
15 - double startFreq; // Hz
16 - double endFreq; // Hz
17 - double sweepRate; // Hz/sec
18 -
19 - double currFreq; // current frequency
20 - bool dir; // current direction. false - mean from start to end
21 -
22 - SSweep()
23 - {
24 - enable = false;
25 -
26 - startFreq = 0.5;
27 - endFreq = 10;
28 - sweepRate = 0.5;
29 -
30 - currFreq = startFreq;
31 - dir = false;
32 - }
15 + double startFreq; // Hz
16 + double endFreq; // Hz
17 + double sweepRate; // Hz/sec
18 +
19 + double currFreq; // current frequency
20 + bool dir; // current direction. false - mean from start to end
21 +
22 + SSweep()
23 + {
24 + enable = false;
25 +
26 + startFreq = 0.5;
27 + endFreq = 10;
28 + sweepRate = 0.5;
29 +
30 + currFreq = startFreq;
31 + dir = false;
32 + }
33 33 };
34 34
35 35 #define SWEEP_STEPS_MAX_COUNT 2000
  @@ -42,13 +42,13 @@
42 42
43 43
44 44 #if !defined(__SAM3X8E__)
45 - int tick_mult = 1;
46 - int tick_count = 0;
47 - uint32_t tmr_tick_in_count = 20;
48 -
49 - int sweep_tick_mult = 1;
50 - int sweep_tick_count = 0;
51 - uint32_t sweep_tmr_tick_in_count = 20;
45 + int tick_mult = 1;
46 + int tick_count = 0;
47 + uint32_t tmr_tick_in_count = 20;
48 +
49 + int sweep_tick_mult = 1;
50 + int sweep_tick_count = 0;
51 + uint32_t sweep_tmr_tick_in_count = 20;
52 52 #endif
53 53
54 54
  @@ -59,24 +59,24 @@
59 59 #else
60 60 ISR(TIMER1_OVF_vect)
61 61 {
62 - TCNT1 = tmr_tick_in_count;
62 + TCNT1 = tmr_tick_in_count;
63 63
64 - if (tick_mult > 1)
65 - {
66 - tick_count++;
64 + if (tick_mult > 1)
65 + {
66 + tick_count++;
67 67
68 - if (tick_count < tick_mult)
69 - return;
70 - }
68 + if (tick_count < tick_mult)
69 + return;
70 + }
71 71
72 - tick_count = 0;
72 + tick_count = 0;
73 73
74 74 #endif
75 75
76 76
77 - uint32_t val = getNextDAC() >> 4; // conv resolution from 16 to 12 bit
77 + uint32_t val = getNextDAC() >> 4; // conv resolution from 16 to 12 bit
78 78
79 - dac_write(val);
79 + dac_write(val);
80 80
81 81
82 82 }
  @@ -84,42 +84,42 @@
84 84 #if defined(__SAM3X8E__)
85 85 void Timer2Interrupt()
86 86 {
87 - if (!m_sweep.enable)
88 - return;
87 + if (!m_sweep.enable)
88 + return;
89 89
90 90 #else
91 91 ISR(TIMER5_OVF_vect)
92 92 {
93 - TCNT5 = sweep_tmr_tick_in_count;
93 + TCNT5 = sweep_tmr_tick_in_count;
94 94
95 - if (sweep_tick_mult > 1)
96 - {
97 - sweep_tick_count++;
95 + if (sweep_tick_mult > 1)
96 + {
97 + sweep_tick_count++;
98 98
99 - if (sweep_tick_count < sweep_tick_mult)
100 - return;
101 - }
99 + if (sweep_tick_count < sweep_tick_mult)
100 + return;
101 + }
102 102
103 - sweep_tick_count = 0;
103 + sweep_tick_count = 0;
104 104
105 105 #endif
106 106
107 - double diff = m_sweep.sweepRate / (double)SWEEP_STEPS_MAX_COUNT;
107 + double diff = m_sweep.sweepRate / (double)SWEEP_STEPS_MAX_COUNT;
108 108
109 - if (m_sweep.endFreq < m_sweep.startFreq) diff *= -1.0;
109 + if (m_sweep.endFreq < m_sweep.startFreq) diff *= -1.0;
110 110
111 - double nextFreq = m_sweep.dir ? m_sweep.currFreq - diff : m_sweep.currFreq + diff;
111 + double nextFreq = m_sweep.dir ? m_sweep.currFreq - diff : m_sweep.currFreq + diff;
112 112
113 - double maxfreq = max(m_sweep.endFreq, m_sweep.startFreq);
114 - double minfreq = min(m_sweep.endFreq, m_sweep.startFreq);
113 + double maxfreq = max(m_sweep.endFreq, m_sweep.startFreq);
114 + double minfreq = min(m_sweep.endFreq, m_sweep.startFreq);
115 115
116 - if (nextFreq > maxfreq || nextFreq < minfreq)
117 - {
118 - nextFreq = m_sweep.currFreq;
119 - m_sweep.dir = !m_sweep.dir;
120 - }
116 + if (nextFreq > maxfreq || nextFreq < minfreq)
117 + {
118 + nextFreq = m_sweep.currFreq;
119 + m_sweep.dir = !m_sweep.dir;
120 + }
121 121
122 - m_sweep.currFreq = nextFreq;
122 + m_sweep.currFreq = nextFreq;
123 123
124 124
125 125
  @@ -130,7 +130,7 @@
130 130
131 131
132 132
133 - setFreq(nextFreq);
133 + setFreq(nextFreq);
134 134
135 135
136 136 }
  @@ -139,11 +139,11 @@
139 139 void timer_init()
140 140 {
141 141 #if defined(__SAM3X8E__)
142 - Timer1.attachInterrupt(Timer1Interrupt);
143 - Timer2.attachInterrupt(Timer2Interrupt);
142 + Timer1.attachInterrupt(Timer1Interrupt);
143 + Timer2.attachInterrupt(Timer2Interrupt);
144 144 #else
145 - TCCR1B = 0x00;
146 - TCCR5B = 0x00;
145 + TCCR1B = 0x00;
146 + TCCR5B = 0x00;
147 147 #endif
148 148 }
149 149
  @@ -151,45 +151,45 @@
151 151
152 152 double getFreq()
153 153 {
154 - return m_freq;
154 + return m_freq;
155 155 }
156 156
157 157
158 - #define MIN_FREQ 0.1
158 + #define MIN_FREQ 0.01
159 159 #define MAX_FREQ 200.0
160 160 #define MIN_SWEEP_RATE 0.01
161 161 #define MAX_SWEEP_RATE 20.0
162 162
163 163
164 - void setFreq(double freq) // [0.1 - 200.0]
164 + void setFreq(double freq) // [0.01 - 200.0]
165 165 {
166 - if (freq < MIN_FREQ) freq = MIN_FREQ;
167 - if (freq > MAX_FREQ) freq = MAX_FREQ;
166 + if (freq < MIN_FREQ) freq = MIN_FREQ;
167 + if (freq > MAX_FREQ) freq = MAX_FREQ;
168 168
169 - m_freq = freq;
169 + m_freq = freq;
170 170
171 171
172 172 #if defined(__SAM3X8E__)
173 173
174 - Timer1.stop();
175 - Timer1.setFrequency(freq * getTabSize());
176 - Timer1.start();
174 + Timer1.stop();
175 + Timer1.setFrequency(freq * getTabSize());
176 + Timer1.start();
177 177
178 178 #else
179 179
180 - int mult = 1;
180 + int mult = 1;
181 181
182 - uint32_t pulses = (uint32_t)(F_CPU / (freq * getTabSize()));
182 + uint32_t pulses = (uint32_t)(F_CPU / (freq * getTabSize()));
183 183
184 - while (pulses > 40000)
185 - {
186 - pulses /= 2;
187 - mult *= 2;
188 - }
184 + while (pulses > 40000)
185 + {
186 + pulses /= 2;
187 + mult *= 2;
188 + }
189 189
190 - tmr_tick_in_count = 65535 - pulses;
190 + tmr_tick_in_count = 65535 - pulses;
191 191
192 - tick_mult = mult;
192 + tick_mult = mult;
193 193
194 194 #endif // __SAM3X8E__
195 195
  @@ -199,47 +199,47 @@
199 199
200 200 void setSweepEnable(bool bEnable)
201 201 {
202 - m_sweep.enable = bEnable;
202 + m_sweep.enable = bEnable;
203 203 }
204 204
205 205 void setSweep(double start, double end, double rate)
206 206 {
207 - if (start < MIN_FREQ) start = MIN_FREQ;
208 - if (start > MAX_FREQ) start = MAX_FREQ;
209 - if (end < MIN_FREQ) end = MIN_FREQ;
210 - if (end > MAX_FREQ) end = MAX_FREQ;
211 - if (rate < MIN_SWEEP_RATE) rate = MIN_SWEEP_RATE;
212 - if (rate > MAX_SWEEP_RATE) rate = MAX_SWEEP_RATE;
213 -
214 - m_sweep.startFreq = start;
215 - m_sweep.endFreq = end;
216 - m_sweep.sweepRate = rate;
207 + if (start < MIN_FREQ) start = MIN_FREQ;
208 + if (start > MAX_FREQ) start = MAX_FREQ;
209 + if (end < MIN_FREQ) end = MIN_FREQ;
210 + if (end > MAX_FREQ) end = MAX_FREQ;
211 + if (rate < MIN_SWEEP_RATE) rate = MIN_SWEEP_RATE;
212 + if (rate > MAX_SWEEP_RATE) rate = MAX_SWEEP_RATE;
213 +
214 + m_sweep.startFreq = start;
215 + m_sweep.endFreq = end;
216 + m_sweep.sweepRate = rate;
217 217
218 - m_sweep.currFreq = m_sweep.startFreq;
219 - m_sweep.dir = false; // false - mean from start to end; true - from end to start
218 + m_sweep.currFreq = m_sweep.startFreq;
219 + m_sweep.dir = false; // false - mean from start to end; true - from end to start
220 220
221 221
222 222 #if defined(__SAM3X8E__)
223 223
224 - Timer2.stop();
225 - Timer2.setFrequency(rate * SWEEP_STEPS_MAX_COUNT);
226 - Timer2.start();
224 + Timer2.stop();
225 + Timer2.setFrequency(rate * SWEEP_STEPS_MAX_COUNT);
226 + Timer2.start();
227 227
228 228 #else
229 229
230 - int mult = 1;
230 + int mult = 1;
231 231
232 - uint32_t pulses = (uint32_t)(F_CPU / (rate * SWEEP_STEPS_MAX_COUNT));//
232 + uint32_t pulses = (uint32_t)(F_CPU / (rate * SWEEP_STEPS_MAX_COUNT));//
233 233
234 - while (pulses > 40000)
235 - {
236 - pulses /= 2;
237 - mult *= 2;
238 - }
234 + while (pulses > 40000)
235 + {
236 + pulses /= 2;
237 + mult *= 2;
238 + }
239 239
240 - sweep_tmr_tick_in_count = 65535 - pulses;
240 + sweep_tmr_tick_in_count = 65535 - pulses;
241 241
242 - sweep_tick_mult = mult;
242 + sweep_tick_mult = mult;
243 243
244 244 #endif // __SAM3X8E__
245 245 }
  @@ -247,41 +247,41 @@
247 247
248 248 void setSweep(const char* szSweep)
249 249 {
250 - if (strstr(szSweep, "?") != NULL)
251 - {
252 - return;
253 - }
254 - else if (strstr(szSweep, "no") != NULL)
255 - {
256 - setSweepEnable(false);
257 - return;
258 - }
259 -
260 - double startFreq = atof(szSweep);
261 - double endFreq = 0;
262 - double sweepRate = 0;
263 -
264 - char* szNext = strstr(szSweep, ";");
265 -
266 - if (szNext != NULL)
267 - {
268 - szNext += 1;
269 -
270 - endFreq = atof(szNext);
271 -
272 - szNext = strstr(szNext, ";");
273 -
274 - if (szNext != NULL)
275 - {
276 - szNext += 1;
277 -
278 - sweepRate = atof(szNext);
279 -
280 - setSweep(startFreq, endFreq, sweepRate);
281 -
282 - setSweepEnable(true);
283 - }
284 - }
250 + if (strstr(szSweep, "?") != NULL)
251 + {
252 + return;
253 + }
254 + else if (strstr(szSweep, "no") != NULL)
255 + {
256 + setSweepEnable(false);
257 + return;
258 + }
259 +
260 + double startFreq = atof(szSweep);
261 + double endFreq = 0;
262 + double sweepRate = 0;
263 +
264 + char* szNext = strstr(szSweep, ";");
265 +
266 + if (szNext != NULL)
267 + {
268 + szNext += 1;
269 +
270 + endFreq = atof(szNext);
271 +
272 + szNext = strstr(szNext, ";");
273 +
274 + if (szNext != NULL)
275 + {
276 + szNext += 1;
277 +
278 + sweepRate = atof(szNext);
279 +
280 + setSweep(startFreq, endFreq, sweepRate);
281 +
282 + setSweepEnable(true);
283 + }
284 + }
285 285
286 286 }
287 287
  @@ -290,11 +290,11 @@
290 290
291 291 const char* getSweepParams()
292 292 {
293 - if (m_sweep.enable)
294 - sprintf(sweepparams, "%0.3f;%0.3f;%0.3f;", m_sweep.startFreq, m_sweep.endFreq, m_sweep.sweepRate);
295 - else
296 - strcpy(sweepparams, "no");
293 + if (m_sweep.enable)
294 + sprintf(sweepparams, "%0.3f;%0.3f;%0.3f;", m_sweep.startFreq, m_sweep.endFreq, m_sweep.sweepRate);
295 + else
296 + strcpy(sweepparams, "no");
297 297
298 - return sweepparams;
298 + return sweepparams;
299 299 }
300 300

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