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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/string.c
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 'sw/z80/libc/string.c')
-rw-r--r--sw/z80/libc/string.c13
1 files changed, 13 insertions, 0 deletions
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;
+}