feat: onewire and ds18b20 driver

lib/onewire/onewire.c

@@ -0,0 +1,58 @@
+//
+// Created by 5ANK41 on 2024/11/28.
+
+#include "onewire.h"
+
+uchar OneWire_init(void) {
+    uchar i;
+    ONE_WIRE_P = 1;
+    ONE_WIRE_P = 0;
+    i = 247;
+    while (--i);
+    ONE_WIRE_P = 1;
+    i = 32;
+    while (--i);
+    uchar ack = ONE_WIRE_P;
+    i = 247;
+    while (--i);
+    return ack;
+}
+
+void OneWire_writeBit(uchar _bit) {
+    uchar i;
+    ONE_WIRE_P = 0;
+    i = 4;
+    while (--i);
+    ONE_WIRE_P = _bit;
+    i = 24;
+    while (--i);
+    ONE_WIRE_P = 1;
+}
+
+void OneWire_writeByte(uchar _byte) {
+    for (uchar i = 0; i < 8; i++) {
+        OneWire_writeBit(_byte & 0x01 << i);
+    }
+}
+
+uchar OneWire_readBit(void) {
+    uchar i, _bit;
+    ONE_WIRE_P = 0;
+    i = 2;
+    while (--i);
+    ONE_WIRE_P = 1;
+    i = 2;
+    while (--i);
+    _bit = ONE_WIRE_P;
+    i = 24;
+    while (--i);
+    return _bit;
+}
+
+uchar OneWire_readByte(void) {
+    uchar _byte = 0x00;
+    for (uchar i = 0; i < 8; i++) {
+        if (OneWire_readBit()) { _byte |= 0x01 << i; }
+    }
+    return _byte;
+}

lib/onewire/onewire.h

@@ -0,0 +1,30 @@
+//
+// Created by 5ANK41 on 2024/11/28.
+//
+
+#ifndef ONEWIRE_H
+#define ONEWIRE_H
+
+#include <8052.h>
+
+#ifndef uchar
+#define uchar unsigned char
+#endif
+
+#ifndef uint
+#define uint unsigned int
+#endif
+
+#define ONE_WIRE_P P3_7
+
+uchar OneWire_init(void);
+
+void OneWire_writeBit(uchar _bit);
+
+void OneWire_writeByte(uchar _byte);
+
+uchar OneWire_readBit(void);
+
+uchar OneWire_readByte(void);
+
+#endif //ONEWIRE_H