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authorNao Pross <naopross@thearcway.org>2017-06-02 16:22:26 +0200
committerNao Pross <naopross@thearcway.org>2017-06-02 16:22:26 +0200
commit4a7f45ee28ac0799ba1ca93fd1683f7858efc54a (patch)
tree831487d939e15ba4c2fdb16b08240f1aeda843e5 /sw/z80/libc
parentnew file coding_rules.txt to have a consistent coding style (diff)
downloadz80uPC-4a7f45ee28ac0799ba1ca93fd1683f7858efc54a.tar.gz
z80uPC-4a7f45ee28ac0799ba1ca93fd1683f7858efc54a.zip
add serial interface and a few std library functions
changes in usart: - new functions to setup the serial comunication settings such as baudrate, parity and stop bits - init function with most common values - transmit and receive functions each with a wrapper to send data blocks changes in libc: - new file stdio.c with basic implementation of putch, printf still a prototype - new file string.c with memcpy() function
Diffstat (limited to '')
-rw-r--r--sw/z80/libc/include/stdio.h11
-rw-r--r--sw/z80/libc/include/string.h8
-rw-r--r--sw/z80/libc/stdio.c12
-rw-r--r--sw/z80/libc/string.c13
4 files changed, 44 insertions, 0 deletions
diff --git a/sw/z80/libc/include/stdio.h b/sw/z80/libc/include/stdio.h
new file mode 100644
index 0000000..b31cdfd
--- /dev/null
+++ b/sw/z80/libc/include/stdio.h
@@ -0,0 +1,11 @@
+#ifndef __STDIO_H__
+#define __STDIO_H__
+
+#include "types.h"
+
+extern uint8_t *stdout, stderr;
+
+void putc(char ch, uint8_t *buffer);
+int printf(const char *fmt, ...);
+
+#endif
diff --git a/sw/z80/libc/include/string.h b/sw/z80/libc/include/string.h
new file mode 100644
index 0000000..f224c87
--- /dev/null
+++ b/sw/z80/libc/include/string.h
@@ -0,0 +1,8 @@
+#ifndef __STRING_H__
+#define __STRING_H__
+
+#include "types.h"
+
+void *memcpy(void *dest, const void *src, size_t n);
+
+#endif
diff --git a/sw/z80/libc/stdio.c b/sw/z80/libc/stdio.c
new file mode 100644
index 0000000..c2548d6
--- /dev/null
+++ b/sw/z80/libc/stdio.c
@@ -0,0 +1,12 @@
+#include "stdio.h"
+
+void putc(char ch, uint8_t *buffer)
+{
+ *buffer = ch;
+ *(++buffer) = '\0';
+}
+
+
+int printf(const char *fmt, ...)
+{
+}
diff --git a/sw/z80/libc/string.c b/sw/z80/libc/string.c
new file mode 100644
index 0000000..fd6a7ff
--- /dev/null
+++ b/sw/z80/libc/string.c
@@ -0,0 +1,13 @@
+#include "string.h"
+
+void *memcpy(void *dest, void *src, size_t n)
+{
+ char *dp = dest;
+ char *sp = src;
+
+ while (n--) {
+ *dp++ = *sp++;
+ }
+
+ return dest;
+}