Diff: uart1.cpp

Revision:

0:226550611f0d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uart1.cpp	Mon Dec 12 23:06:58 2016 +0000
@@ -0,0 +1,69 @@
+#include "uart1.h"
+#include "mbed.h"
+
+#define BUFFERSIZE 128
+extern Serial bus;
+DigitalOut led_2(LED2);
+ 
+static unsigned char U1buf[BUFFERSIZE];
+static unsigned int U1ptr;
+static unsigned int U1gptr;
+static unsigned int U1cnt;
+
+
+static void
+serial_event()
+{
+  led_2 = !led_2;
+  
+  if(bus.readable())
+  {
+    U1buf[U1ptr++] = (unsigned char) USART1->RDR & 0xFF;//(unsigned char)bus.getc();
+    U1ptr &= BUFFERSIZE-1;
+    if(U1ptr == U1gptr)
+    {
+      U1gptr++;
+      U1gptr &= BUFFERSIZE-1;
+    }
+    else
+    {
+      U1cnt++;
+    }
+  }
+}
+
+ void 
+init_uart1(void)
+{
+  bus.baud(115200); 
+  bus.attach(&serial_event,Serial::RxIrq);
+  
+  U1ptr = U1gptr = U1cnt = 0;
+}
+
+int 
+uart1_is_char(void)
+{
+  return U1cnt;
+}
+
+int 
+uart1_get_char(void)
+{
+  int result;
+  result = 0;
+  if(U1cnt)
+  {
+    result = U1buf[U1gptr++];
+    U1gptr &= BUFFERSIZE-1;
+    U1cnt--;
+  }
+
+  return result; 
+}
+
+void 
+send_uart1_char(unsigned char c)
+{
+  bus.putc(c); 
+}
\ No newline at end of file