Merge pull request cybergibbons#7 from andypugh/master

Add a way to change channels on the DS2482-800
maxus-git · Nov 9, 2020 · 31318b1 · 31318b1
2 parents 2c34e45 + ab200e1
commit 31318b1
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Showing 2 changed files with 18 additions and 1 deletion.
diff --git a/OneWire.cpp b/OneWire.cpp
@@ -241,6 +241,20 @@ void OneWire::wireResetSearch()
 
 }
 
+// Set the channel on the DS2482-800
+uint8_t OneWire::setChannel(uint8_t ch){
+  uint8_t w[] = {0xf0, 0xe1, 0xd2, 0xc3, 0xb4, 0xa5, 0x96, 0x87};
+  uint8_t r[] = {0xb8, 0xb1, 0xaa, 0xa3, 0x9c, 0x95, 0x8e, 0x87};
+  waitOnBusy();
+  begin();
+  writeByte(0xc3);
+  writeByte(w[ch]);
+  end();
+  waitOnBusy();
+  return readByte() == r[ch];
+}
+
+
 // Perform a search of the 1-Wire bus
 uint8_t OneWire::wireSearch(uint8_t *address)
 {

diff --git a/OneWire.h b/OneWire.h
@@ -1,8 +1,10 @@
 #ifndef __ONEWIRE_H__
 #define __ONEWIRE_H__
 
+#include <stddef.h>
 #include <inttypes.h>
 
+
 // Chose between a table based CRC (flash expensive, fast)
 // or a computed CRC (smaller, slow)
 #define ONEWIRE_CRC8_TABLE 			1
@@ -59,6 +61,7 @@ class OneWire
 	uint8_t readConfig();
 	void writeConfig(uint8_t config);
 	void setStrongPullup();
+    uint8_t setChannel(uint8_t ch);
 	void clearStrongPullup();
 	uint8_t wireReset();
 	void wireWriteByte(uint8_t data, uint8_t power = 0);
@@ -96,4 +99,4 @@ class OneWire
 	uint8_t searchLastDeviceFlag;
 };
 
-#endif
+#endif