Appiko
SEGGER_RTT_Syscalls_GCC.c
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54 ---------------------------END-OF-HEADER------------------------------
55 File : SEGGER_RTT_Syscalls_GCC.c
56 Purpose : Low-level functions for using printf() via RTT in GCC.
57  To use RTT for printf output, include this file in your
58  application.
59 Revision: $Rev: 4351 $
60 ----------------------------------------------------------------------
61 */
62 #if (defined __GNUC__) && !(defined __SES_ARM) && !(defined __CROSSWORKS_ARM)
63 
64 #include <reent.h> // required for _write_r
65 #include "SEGGER_RTT.h"
66 
67 
68 /*********************************************************************
69 *
70 * Types
71 *
72 **********************************************************************
73 */
74 //
75 // If necessary define the _reent struct
76 // to match the one passed by the used standard library.
77 //
78 struct _reent;
79 
80 /*********************************************************************
81 *
82 * Function prototypes
83 *
84 **********************************************************************
85 */
86 int _write(int file, char *ptr, size_t len);
87 int _write_r(struct _reent *r, int file, const void *ptr, size_t len);
88 
89 /*********************************************************************
90 *
91 * Global functions
92 *
93 **********************************************************************
94 */
95 
96 /*********************************************************************
97 *
98 * _write()
99 *
100 * Function description
101 * Low-level write function.
102 * libc subroutines will use this system routine for output to all files,
103 * including stdout.
104 * Write data via RTT.
105 */
106 int _write(int file, char *ptr, int len) {
107  (void) file; /* Not used, avoid warning */
108  SEGGER_RTT_Write(0, ptr, len);
109  return len;
110 }
111 
112 /*********************************************************************
113 *
114 * _write_r()
115 *
116 * Function description
117 * Low-level reentrant write function.
118 * libc subroutines will use this system routine for output to all files,
119 * including stdout.
120 * Write data via RTT.
121 */
122 int _write_r(struct _reent *r, int file, const void *ptr, int len) {
123  (void) file; /* Not used, avoid warning */
124  (void) r; /* Not used, avoid warning */
125  SEGGER_RTT_Write(0, ptr, len);
126  return len;
127 }
128 
129 #endif
130 /****** End Of File *************************************************/
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