nrf52dk: cpu/nrf52832 support

cpu/nrf52832/putchar.c

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2015, Nordic Semiconductor
+ * 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 Institute 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 INSTITUTE 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 INSTITUTE 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.
+ *
+ */
+/**
+ * \addtogroup nrf52832
+ * @{
+ *
+ * \file
+ *         Hardware specific implementation of putchar() and puts() functions.
+ * \author
+ *         Wojciech Bober <wojciech.bober@nordicsemi.no>
+ *
+ */
+/*---------------------------------------------------------------------------*/
+#include <string.h>
+#include "dev/uart0.h"
+/*---------------------------------------------------------------------------*/
+int
+putchar(int c)
+{
+  uart0_writeb(c);
+  return c;
+}
+/*---------------------------------------------------------------------------*/
+int
+puts(const char *str)
+{
+  int i;
+
+  if (str == NULL) {
+    return 0;
+  }
+
+  for (i = 0; i < strlen(str); i++) {
+    uart0_writeb(str[i]);
+  }
+
+  uart0_writeb('\n');
+  return i;
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * @}
+ */