Diff: main.cpp

Revision:

0:6fad8486013f

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Sep 28 03:30:09 2017 +0000
@@ -0,0 +1,92 @@
+#include "mbed.h"
+
+struct UART_buf
+{ 
+    uint8_t STA;
+    uint8_t MODE; 
+    uint8_t CMD;
+    uint8_t LEN;
+    uint8_t DATA[32];
+    uint8_t END; 
+};
+ 
+PinName pin_BUZZER = PD_2;
+
+DigitalOut Buzzer(pin_BUZZER);
+
+Serial SerialUART(PA_2, PA_3);
+
+UART_buf RX_BUF;
+
+void SerialUARTRX_ISR(void);
+
+int main() {
+    
+    SerialUART.baud(115200);
+    
+    SerialUART.attach(&SerialUARTRX_ISR);
+    
+    Buzzer = 0;
+    
+    while(1)
+    {
+    }
+}
+
+void SerialUARTRX_ISR(void)
+{
+    static uint8_t RX_count = 0, RX_Len = 32, RX_Status = 0;
+    uint8_t rx_da = SerialUART.getc();
+    switch(RX_Status)
+    {
+        case 0:
+            if(rx_da == 0x76)
+            {
+                RX_BUF.STA = rx_da;
+                RX_Status++;
+            }
+            break;
+        case 1:
+            RX_BUF.MODE = rx_da;
+            RX_Status++;
+            break;
+        case 2:
+            RX_BUF.CMD = rx_da;
+            RX_Status++;
+            break;
+        case 3:
+            RX_BUF.LEN = rx_da;
+            RX_Len = RX_BUF.LEN;
+            RX_Status++;
+            if(RX_Len == 0)
+                RX_Status++;
+            break;
+        case 4:
+            RX_BUF.DATA[RX_count] = rx_da;
+            RX_count++;
+            if(RX_count == RX_Len)
+            {
+                RX_Status++;
+                RX_count = 0;
+                RX_Len = 32;
+            }
+            break;
+        case 5:
+            if(rx_da == 0x3E)
+            {
+                RX_BUF.END = rx_da;
+                RX_Status = 0;
+                switch(RX_BUF.MODE)
+                {
+                    case 0x01:
+                        if(RX_BUF.CMD == 0x16)
+                        {
+                            Buzzer = RX_BUF.DATA[0];
+                        }
+                        break;
+                }
+            }
+            break;
+    }
+}
+