Initial commit

_rs232/ic_emul/uart.c

@@ -0,0 +1,63 @@
+#include <windows.h>
+
+HANDLE port;
+DCB dcb;
+COMMTIMEOUTS touts;
+
+
+
+//init uart
+int uart_init(char *comport)
+{
+  port = CreateFile(comport, GENERIC_READ | GENERIC_WRITE,
+      FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);
+  if (port==INVALID_HANDLE_VALUE) return -1;
+
+  if (GetCommState(port, &dcb))
+  {
+     dcb.BaudRate = CBR_115200;
+     dcb.ByteSize = 8; dcb.Parity = 0; dcb.StopBits = 0;
+     dcb.fAbortOnError = 0;
+     SetCommState(port, &dcb);
+  }
+
+  if (GetCommTimeouts(port, &touts))
+  {
+     touts.ReadIntervalTimeout = MAXDWORD;
+     touts.ReadTotalTimeoutMultiplier = MAXDWORD;
+     touts.ReadTotalTimeoutConstant = MAXDWORD;
+     touts.WriteTotalTimeoutMultiplier = MAXDWORD;
+     touts.WriteTotalTimeoutConstant = MAXDWORD;
+
+     SetCommTimeouts(port, &touts);
+  }
+
+//  PurgeComm(port, PURGE_RXCLEAR+PURGE_TXCLEAR);
+  return 0;
+}
+
+
+//read byte (can use int)
+void uart_read(char *buf, int len)
+{
+  unsigned long nread=0,s;
+
+  for(s=0; s<len;)
+  {
+    ReadFile(port, &buf[s], len, &nread, NULL);
+    s+=nread;
+  }
+}
+
+
+//write byte 2 usart
+void uart_write(char *buf, int len)
+{
+  unsigned long nread=0;
+
+  WriteFile(port, buf, len, &nread, NULL);
+}
+
+
+
+