Merge pull request #4312 from kaspar030/misc_fmt_compile_fixes

cpu: atmega_common, msp430: misc libc fixes for fmt

boards/chronos/stdio.c

@@ -40,3 +40,8 @@ int getchar(void)
     /* dummy implementation */
     return EOF;
 }
+
+ssize_t write(int fildes, const void *buf, size_t nbyte)
+{
+    return -1;
+}

cpu/atmega_common/include/sys/types.h

 /*
  * Copyright (C) 2014 Freie Universität Berlin, Hinnerk van Bruinehsen
+ *               2015 Kaspar Schleiser <kaspar@schleiser.de>
  *
  * This file is subject to the terms and conditions of the GNU Lesser
  * General Public License v2.1. See the file LICENSE in the top level
@@ -18,6 +19,7 @@ extern "C" {
 
 typedef int16_t suseconds_t;
 typedef signed int ssize_t;
+typedef unsigned int off_t;
 
 #ifdef __cplusplus
 }

cpu/msp430-common/include/sys/types.h

+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+#ifndef SYS_TYPES_H_
+#define SYS_TYPES_H_
+
+#include "msp430_types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYS_TYPES_H_ */

cpu/msp430fxyz/msp430_stdio.c

@@ -18,6 +18,9 @@
  * @}
  */
 
+#include <sys/types.h>
+#include <unistd.h>
+
 #include "uart_stdio.h"
 
 /**
@@ -37,6 +40,18 @@ int getchar(void)
 int putchar(int c)
 {
     char _c = c;
-    uart_stdio_write(&_c, 1);
-    return 1;
+    return uart_stdio_write(&_c, 1);
+}
+
+/**
+ * @brief   Write nbyte characters to the STDIO UART interface
+ */
+ssize_t write(int fildes, const void *buf, size_t nbyte)
+{
+    if (fildes == STDOUT_FILENO) {
+        return uart_stdio_write(buf, nbyte);
+    }
+    else {
+        return -1;
+    }
 }

sys/fmt/fmt.c

@@ -137,6 +137,10 @@ uint32_t scn_u32_dec(const char *str, size_t n)
 
 void print(const char *s, size_t n)
 {
+#ifdef __WITH_AVRLIBC__
+    /* AVR's libc doesn't offer write(), so use fwrite() instead */
+    fwrite(s, n, 1, stdout);
+#else
     while (n > 0) {
         ssize_t written = write(STDOUT_FILENO, s, n);
         if (written < 0) {
@@ -145,6 +149,7 @@ void print(const char *s, size_t n)
         n -= written;
         s += written;
     }
+#endif /* __WITH_AVRLIBC__ */
 }
 
 void print_u32_dec(uint32_t val)

tests/fmt_print/Makefile

+APPLICATION = fmt_print
+include ../Makefile.tests_common
+
+USEMODULE += fmt
+
+include $(RIOTBASE)/Makefile.include

tests/fmt_print/main.c

+/*
+ * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       fmt print test application
+ *
+ * This test is supposed to check for "compilabilty" of the fmt print_* instructions.
+ *
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * @}
+ */
+
+#include "fmt.h"
+
+int main(void)
+{
+    print_str("If you can read this:\n");
+    print_str("Test successful.\n");
+
+    return 0;
+}