new printf() is too fucking fast, causing DMA buffer overrun in UART transmit. fixed that. Doesn't affect GCC targets.

got rid of more 16bit ints in new pid controller.

git-svn-id: https://afrodevices.googlecode.com/svn/trunk/baseflight@348 7c89a4a9-59b9-e629-4cfe-3a2d53b20e61

src/main.c

@@ -18,6 +18,8 @@ static void _putc(void *p, char c)
 // keil/armcc version
 int fputc(int c, FILE *f)
 {
+    // let DMA catch up a bit when using set or dump, we're too fast.
+    while (!uartTransmitDMAEmpty());
     uartWrite(c);
     return c;
 }