cc253x: Config to swap between UART and USB I/O

See Pull Request #18

cpu/cc253x/dev/cc2530-rf.c

@@ -95,9 +95,10 @@
 
 /* 192 ms, radio off -> on interval */
 #define ONOFF_TIME                    RTIMER_ARCH_SECOND / 3125
+
 /*---------------------------------------------------------------------------*/
 #if CC2530_RF_CONF_HEXDUMP
-#include "uart0.h"
+#include "dev/io-arch.h"
 static const uint8_t magic[] = { 0x53, 0x6E, 0x69, 0x66 }; /* Snif */
 #endif
 /*---------------------------------------------------------------------------*/
@@ -364,11 +365,11 @@ read(void *buf, unsigned short bufsize)
 
 #if CC2530_RF_CONF_HEXDUMP
   /* If we reach here, chances are the FIFO is holding a valid frame */
-  uart0_writeb(magic[0]);
-  uart0_writeb(magic[1]);
-  uart0_writeb(magic[2]);
-  uart0_writeb(magic[3]);
-  uart0_writeb(len);
+  io_arch_writeb(magic[0]);
+  io_arch_writeb(magic[1]);
+  io_arch_writeb(magic[2]);
+  io_arch_writeb(magic[3]);
+  io_arch_writeb(len);
 #endif
 
   RF_RX_LED_ON();
@@ -380,7 +381,7 @@ read(void *buf, unsigned short bufsize)
   for(i = 0; i < len; ++i) {
     ((unsigned char*)(buf))[i] = RFD;
 #if CC2530_RF_CONF_HEXDUMP
-    uart0_writeb(((unsigned char*)(buf))[i]);
+    io_arch_writeb(((unsigned char*)(buf))[i]);
 #endif
     PUTHEX(((unsigned char*)(buf))[i]);
   }
@@ -391,8 +392,9 @@ read(void *buf, unsigned short bufsize)
   crc_corr = RFD;
 
 #if CC2530_RF_CONF_HEXDUMP
-  uart0_writeb(rssi);
-  uart0_writeb(crc_corr);
+  io_arch_writeb(rssi);
+  io_arch_writeb(crc_corr);
+  io_arch_flush();
 #endif
 
   /* MS bit CRC OK/Not OK, 7 LS Bits, Correlation value */

platform/cc2530dk/contiki-main.c

@@ -6,7 +6,7 @@
 #include "dev/serial-line.h"
 #include "dev/slip.h"
 #include "dev/leds.h"
-#include "dev/uart0.h"
+#include "dev/io-arch.h"
 #include "dev/dma.h"
 #include "dev/cc2530-rf.h"
 #include "dev/watchdog.h"
@@ -158,17 +158,16 @@ main(void) CC_NON_BANKED
   /* initialize process manager. */
   process_init();
 
-  /* Init UART */
-  uart0_init();
-
 #if DMA_ON
   dma_init();
 #endif
 
+  io_arch_init();
+
 #if SLIP_ARCH_CONF_ENABLE
   slip_arch_init(0);
 #else
-  uart0_set_input(serial_line_input_byte);
+  io_arch_set_input(serial_line_input_byte);
   serial_line_init();
 #endif
   fade(LEDS_RED);

platform/cc2530dk/dev/io-arch.h

@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2012, George Oikonomou (oikonomou@users.sourceforge.net)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the copyright holder nor the names of its
+ *    contributors may be used to endorse or promote products derived
+ *    from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * This file is part of the Contiki operating system.
+ */
+
+/**
+ * \file
+ *         Platform-specific header file which switches between UART and USB
+ *         input/output, depending on whether we are building for the
+ *         cc2531 USB dongle or the SmartRF
+ *
+ *         These configuration directives are hardware-specific and you
+ *         normally won't have to modify anything in this file.
+ *
+ * \author
+ *         George Oikonomou - <oikonomou@users.sourceforge.net>
+ */
+
+#ifndef IO_ARCH_H_
+#define IO_ARCH_H_
+
+#include "contiki.h"
+/*---------------------------------------------------------------------------*/
+#if MODEL_CC2531
+#include "dev/usb-serial.h"
+#define IO_ARCH_PREFIX usb_serial
+
+/*
+ * When using the cc2531 USB stick, we have the option to enable buffering
+ * for USB-serial output. In this case, the driver will implicitly flush the
+ * output when the TX buffer is full or when it encounters SLIP_END or '\n'.
+ * We can trigger an explicit flush by calling io_arch_flush(). Naturally, this
+ * does not make sense when our output uses the UART nor when buffering is
+ * disabled, in which cases the calls are simply pre-processed to nothingness
+ */
+#define io_arch_flush() usb_serial_flush()
+#else
+#include "dev/uart0.h"
+#define IO_ARCH_PREFIX uart0
+#define io_arch_flush()
+#endif
+/*---------------------------------------------------------------------------*/
+/* Expands to uart0_init(), usb_serial_init() */
+#define io_arch_init() io_arch_init_x(IO_ARCH_PREFIX)
+#define io_arch_writeb(b) io_arch_writeb_x(IO_ARCH_PREFIX, b)
+#define io_arch_set_input(f) io_arch_set_input_x(IO_ARCH_PREFIX, f)
+/*---------------------------------------------------------------------------*/
+/* Second round of macro substitutions. You can stop reading here */
+#define io_arch_init_x(prefix) io_arch_init_x_x(prefix)
+#define io_arch_writeb_x(prefix, b) io_arch_writeb_x_x(prefix, b)
+#define io_arch_set_input_x(prefix, f) io_arch_set_input_x_x(prefix, f)
+/*---------------------------------------------------------------------------*/
+#define io_arch_init_x_x(prefix) prefix##_init()
+#define io_arch_writeb_x_x(prefix, b) prefix##_writeb(b)
+#define io_arch_set_input_x_x(prefix, f) prefix##_set_input(f)
+
+#endif /* IO_ARCH_H_ */

platform/cc2530dk/dev/slip-arch.c

@@ -29,21 +29,21 @@
  */
 
 /*
- * Machine dependent cc2530eb SLIP routines for UART1.
+ * Machine dependent cc253x SLIP routines.
  */
 
 #include "dev/slip.h"
-#include "dev/uart0.h"
+#include "dev/io-arch.h"
 /*---------------------------------------------------------------------------*/
 void
 slip_arch_writeb(unsigned char c)
 {
-  uart0_writeb(c);
+  io_arch_writeb(c);
 }
 /*---------------------------------------------------------------------------*/
 void
 slip_arch_init(unsigned long ubr)
 {
-  uart0_set_input(slip_input_byte);
+  io_arch_set_input(slip_input_byte);
 }
 /*---------------------------------------------------------------------------*/

platform/cc2530dk/putchar.c

@@ -7,7 +7,7 @@
  */
 
 #include "contiki-conf.h"
-#include "dev/uart0.h"
+#include "dev/io-arch.h"
 /*---------------------------------------------------------------------------*/
 void
 putchar(char c)
@@ -17,13 +17,13 @@ putchar(char c)
   static char debug_frame = 0;
 
   if(!debug_frame) {            /* Start of debug output */
-    uart0_writeb(SLIP_END);
-    uart0_writeb('\r');     /* Type debug line == '\r' */
+    io_arch_writeb(SLIP_END);
+    io_arch_writeb('\r');     /* Type debug line == '\r' */
     debug_frame = 1;
   }
 #endif
 
-  uart0_writeb((char)c);
+  io_arch_writeb((char)c);
 
 #if SLIP_ARCH_CONF_ENABLE
   /*
@@ -31,7 +31,7 @@ putchar(char c)
    * implicitly flushes debug output.
    */
   if(c == '\n') {
-    uart0_writeb(SLIP_END);
+    io_arch_writeb(SLIP_END);
     debug_frame = 0;
   }
 #endif