Diff: BUZZER/BUZZER.cpp

Revision:

1:ed1c6618f739

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/BUZZER/BUZZER.cpp	Thu Jun 03 07:08:47 2021 +0000
@@ -0,0 +1,114 @@
+#include "BUZZER.h"
+
+PwmOut buzzer(BUZZER_PIN);
+Thread buzzerThread;
+
+Semaphore semaphoreBuzzer(0);
+Semaphore semaphoreBuzzerValues(1);
+
+char buzzerInstruction = 0;
+short buzzerCnt = 0;
+int buzzerDelay = 0;
+int buzzerFreq = BUZZER_BEEP_FREQUENCY;
+
+static void _buzzerThread(void)
+{
+    int instruction;
+    int delay;
+    int cnt;
+    int freq;
+    while(1) {
+        semaphoreBuzzer.acquire();
+        semaphoreBuzzerValues.acquire();
+
+        instruction = buzzerInstruction;
+        delay = buzzerDelay;
+        cnt = buzzerCnt;
+        buzzerInstruction = BUZZER_INSTRUCTION_OFF;
+        freq = buzzerFreq;
+
+        semaphoreBuzzerValues.release();
+
+        switch(instruction) {
+            case BUZZER_INSTRUCTION_INIT:
+                buzzer.period(1.0 / BUZZER_BEEP_FREQUENCY);
+            case BUZZER_INSTRUCTION_OFF:
+                buzzer = 0;
+                break;
+
+            case BUZZER_INSTRUCTION_ON:
+                buzzer.period(1.0 / freq);
+                buzzer = 0.5;
+                break;
+
+            case BUZZER_INSTRUCTION_RINGING:
+                buzzer.period(1.0 / freq);
+                for(cnt; cnt > 0; cnt--) {
+                    buzzer = 0.5;
+                    thread_sleep_for(delay);
+                    buzzer = 0.0;
+                    thread_sleep_for(delay);
+                }
+                break;
+        }
+    }
+}
+
+void buzzerInit(void)
+{
+    printf("Init buzzer\r\n");
+    semaphoreBuzzerValues.acquire();
+    buzzerInstruction = BUZZER_INSTRUCTION_INIT;
+    buzzerCnt = 0;
+    buzzerDelay = 0;
+    semaphoreBuzzerValues.release();
+    semaphoreBuzzer.release();
+    buzzerThread.start(_buzzerThread);
+}
+
+void buzzerOn(int freq)
+{
+    semaphoreBuzzerValues.acquire();
+    buzzerFreq = freq;
+    buzzerInstruction = BUZZER_INSTRUCTION_ON;
+    semaphoreBuzzerValues.release();
+    semaphoreBuzzer.release();
+}
+
+void buzzerOn(void)
+{
+    semaphoreBuzzerValues.acquire();
+    buzzerFreq = BUZZER_BEEP_FREQUENCY;
+    buzzerInstruction = BUZZER_INSTRUCTION_ON;
+    semaphoreBuzzerValues.release();
+    semaphoreBuzzer.release();
+}
+
+void buzzerOff(void)
+{
+    semaphoreBuzzerValues.acquire();
+    buzzerInstruction = BUZZER_INSTRUCTION_OFF;
+    semaphoreBuzzerValues.release();
+    semaphoreBuzzer.release();
+}
+void buzzerRinging(short cnt, int delay, int freq)
+{
+    semaphoreBuzzerValues.acquire();
+    buzzerFreq = freq;
+    buzzerInstruction = BUZZER_INSTRUCTION_RINGING;
+    buzzerCnt = cnt;
+    buzzerDelay = delay;
+    semaphoreBuzzerValues.release();
+    semaphoreBuzzer.release();
+}
+
+void buzzerRinging(short cnt, int delay)
+{
+    semaphoreBuzzerValues.acquire();
+    buzzerFreq = BUZZER_BEEP_FREQUENCY;
+    buzzerInstruction = BUZZER_INSTRUCTION_RINGING;
+    buzzerCnt = cnt;
+    buzzerDelay = delay;
+    semaphoreBuzzerValues.release();
+    semaphoreBuzzer.release();
+}