1 files changed, 77 insertions, 0 deletions
diff --git a/boiler-monster/stm32/app/stdio.c b/boiler-monster/stm32/app/stdio.c
new file mode 100644
index 0000000..bcdd5c7
--- /dev/null
+++ b/boiler-monster/stm32/app/stdio.c
@@ -0,0 +1,77 @@
+#include "project.h"
+
+unsigned block_stdio;
+
+int
+_open (const char *name, int flags, int mode)
+{
+  errno = ENOSYS;
+  return -1;                    /* Always fails */
+
+}                               /* _open () */
+
+int
+_close (int file)
+{
+  errno = EBADF;
+  return -1;                    /* Always fails */
+
+}                               /* _close () */
+
+int
+_write (int file, char *buf, int nbytes)
+{
+
+  int ret = nbytes;
+
+  if (!block_stdio)
+    ret = usart1_write (buf, nbytes, 1);
+
+  if (ret < 0) {
+    errno = -ret;
+    return -1;
+  }
+
+  return ret;
+}                               /* _write () */
+
+
+int
+_read (int file, char *buf, int nbytes)
+{
+
+  errno = -EAGAIN;
+  return -1;                    /* EOF */
+
+}                               /* _read () */
+
+#if 0
+int
+_fstat (int file, struct stat *st)
+{
+  st->st_mode = S_IFCHR;
+  return 0;
+
+}                               /* _fstat () */
+#endif
+
+int
+_lseek (int file, int offset, int whence)
+{
+  return 0;
+
+}                               /* _lseek () */
+
+int
+isatty (int file)
+{
+  return 1;
+
+}                               /* _isatty () */
+
+
+void
+stdio_drain (void)
+{
+  usart1_drain();
+}