Diff: main.cpp

Revision:

0:98b619522ddd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Dec 06 08:54:55 2017 +0000
@@ -0,0 +1,84 @@
+#include "mbed.h"
+
+PinName pin_BUZZER = PD_2;
+PinName pin_PIR = PB_2;
+
+// I2C address
+int DoT_ADDR = 0x71<<1;
+
+DigitalOut Buzzer(pin_BUZZER);
+InterruptIn Pir(pin_PIR);
+I2C Dotmatrix(I2C_SDA, I2C_SCL);
+
+//char Data_BUF[17] = {0, 0x28, 0, 0x28, 0, 0xBA, 0, 0xBA, 0, 0x7C, 0, 0x10, 0, 0x38, 0, 0x38, 0};
+char Data_BUF[17] = {0, 0x14, 0, 0x14, 0, 0x5D, 0, 0x5D, 0, 0x3E, 0, 0x08, 0, 0x1C, 0, 0x1C, 0};
+char Clear_BUF[17] = {0, 0 ,0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+volatile int pir_flag = 0, Intruder_flag = 0, Blink_flag = 0;
+
+void PIR_ISR(void);
+void data_write(char *data, int len);
+void Command_Write(uint8_t com);
+void Dotmatrix_init(void);
+
+int main()
+{
+    Dotmatrix_init();
+    data_write(Clear_BUF, 17);
+    
+    Pir.rise(&PIR_ISR);
+    Buzzer = 0;
+    
+    while(1){
+        if(pir_flag == 1)
+        {
+            Intruder_flag = 1;
+            pir_flag = 0;
+        }
+        else
+        {
+            Intruder_flag = 0;
+        }
+        if((Intruder_flag == 1) && (Blink_flag ==0))
+        {
+            Blink_flag = 1;
+            data_write(Data_BUF, 17);
+            Buzzer = 1;
+        }
+        else
+        {
+            Blink_flag = 0;
+            data_write(Clear_BUF, 17);
+            Buzzer = 0;
+        }
+        wait(0.5);
+    }
+}
+
+void PIR_ISR(void)
+{
+    pir_flag = 1;
+}
+
+void data_write(char *data, int len)
+{
+    data[0] = 0;
+    Dotmatrix.write(DoT_ADDR, data, len);
+}
+
+void Command_Write(char com)
+{
+    Dotmatrix.write(DoT_ADDR, &com, 1);
+}
+
+void Dotmatrix_init(void)
+{
+    // Internal System Clock enable
+    Command_Write((char)0x21);
+    // INT/ROW output pin Set -> ROW Driver output
+    Command_Write((char)0xA0);
+    // Dimming Set -> 15
+    Command_Write((char)0xEF);
+    // Blinking Set -> off
+    // Display Set -> on
+    Command_Write((char)0x81);
+}