Diff: ds18b20.cpp

Revision:

4:e076884ef8bd

Child:

5:6226f3c566ef

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ds18b20.cpp	Tue May 03 09:23:26 2016 +0000
@@ -0,0 +1,58 @@
+#include   "mbed.h"
+#include "1-wire.h"
+#include    "log.h"
+#include     "io.h"
+#include   "wifi.h"
+
+static Ticker ticker;
+#define SEND_BUFFER_LENGTH 2
+#define RECV_BUFFER_LENGTH 10
+static char send[SEND_BUFFER_LENGTH];
+static char recv[RECV_BUFFER_LENGTH];
+static int sendlen = 0;
+static int recvlen = 0;
+
+void DS18B20ReadRom()
+{
+    sendlen = 1;
+    send[0] = 0x33;
+    recvlen = 8;
+    OneWireExchange(sendlen, recvlen, send, recv, 0);
+}
+void DS18B20ReadScratchpad()
+{
+    sendlen = 2;
+    send[0] = 0xCC;
+    send[1] = 0xBE;
+    recvlen = 9;
+    OneWireExchange(sendlen, recvlen, send, recv, 0);
+}
+void DS18B20ConvertT()
+{
+    sendlen = 2;
+    send[0] = 0xCC;
+    send[1] = 0x44;
+    recvlen = 0;
+    OneWireExchange(sendlen, recvlen, send, recv, 750);
+}
+int DS18B20Init()
+{
+    ticker.attach(&DS18B20ReadScratchpad, 10.0);
+    return 0;
+}
+int DS18B20Main()
+{
+    static int wasbusy = false;
+
+    if (!OneWireBusy() && wasbusy)
+    {
+        LogF("1-wire | send:");
+        for (int i = 0; i < sendlen; i++) LogF(" %02x", send[i]);
+        LogF(" | recv:");
+        for (int i = 0; i < recvlen; i++) LogF(" %02x", recv[i]);
+        LogF("\r\n");
+    }
+
+    wasbusy = OneWireBusy();
+    return 0;
+}
\ No newline at end of file