diff --git a/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.c b/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.c
index 85ed096..cb27647 100644
--- a/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.c
+++ b/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.c
@@ -16,14 +16,15 @@
 
 void DS18B20_Init(void)
 {
+    /* Pull up 2 seconds for possible capacitor charging */
     DS18B20_DQ_PULLUP();
     DS18B20_DQ_OUTPUT();
     DS18B20_DQ = SET;
-    SYS_DelayUs(1000);
+    SYS_Delay(1000);
     DS18B20_DQ = RESET;
-    SYS_DelayUs(1000);
+    SYS_Delay(1);
     DS18B20_DQ = SET;
-    SYS_DelayUs(2000);
+    SYS_Delay(1000);
 }
 
 __BIT DS18B20_Reset(void)
@@ -238,7 +239,7 @@ void DS18B20_ReadScratchpadFromAddr(const uint8_t *addr, uint8_t *buf)
     }
 }
 
-uint8_t DS18B20_Detect(uint8_t *buff, uint8_t *stack, uint8_t split_point)
+uint8_t DS18B20_Search(uint8_t *buff, uint8_t *stack, uint8_t split_point)
 {
     uint8_t len = 64, pos = 0;
     /* Start from deepest point */
diff --git a/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.h b/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.h
index e4a3654..aa73216 100644
--- a/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.h
+++ b/demo/gpio/ds18b20/multiple-ds18b20/ds18b20.h
@@ -163,6 +163,6 @@ void DS18B20_ReadScratchpadFromAddr(const uint8_t *addr, uint8_t *buf);
  * @param split_point deepest split point of last search
  * @return new split point
  */
-uint8_t DS18B20_Detect(uint8_t *buff, uint8_t *stack, uint8_t split_point);
+uint8_t DS18B20_Search(uint8_t *buff, uint8_t *stack, uint8_t split_point);
 
 #endif // __DS18B20_H_
diff --git a/demo/gpio/ds18b20/multiple-ds18b20/main.c b/demo/gpio/ds18b20/multiple-ds18b20/main.c
index 7f533f7..d68fdfa 100644
--- a/demo/gpio/ds18b20/multiple-ds18b20/main.c
+++ b/demo/gpio/ds18b20/multiple-ds18b20/main.c
@@ -52,7 +52,7 @@ int main(void)
         do
         {
             // ROM search and store ROM bytes to addr
-            sp = DS18B20_Detect(addr, Search_Stack, sp);
+            sp = DS18B20_Search(addr, Search_Stack, sp);
             // Print the new split point and address
             UART1_TxHex(sp);
             UART1_TxChar(' ');
@@ -74,6 +74,7 @@ int main(void)
             UART1_TxString("\r\n");
         } while (sp);
 
+        UART1_TxString("\r\n");
         SYS_Delay(1000);
     }
 }
diff --git a/demo/gpio/ds18b20/single-ds18b20/ds18b20.c b/demo/gpio/ds18b20/single-ds18b20/ds18b20.c
index 85ed096..cb27647 100644
--- a/demo/gpio/ds18b20/single-ds18b20/ds18b20.c
+++ b/demo/gpio/ds18b20/single-ds18b20/ds18b20.c
@@ -16,14 +16,15 @@
 
 void DS18B20_Init(void)
 {
+    /* Pull up 2 seconds for possible capacitor charging */
     DS18B20_DQ_PULLUP();
     DS18B20_DQ_OUTPUT();
     DS18B20_DQ = SET;
-    SYS_DelayUs(1000);
+    SYS_Delay(1000);
     DS18B20_DQ = RESET;
-    SYS_DelayUs(1000);
+    SYS_Delay(1);
     DS18B20_DQ = SET;
-    SYS_DelayUs(2000);
+    SYS_Delay(1000);
 }
 
 __BIT DS18B20_Reset(void)
@@ -238,7 +239,7 @@ void DS18B20_ReadScratchpadFromAddr(const uint8_t *addr, uint8_t *buf)
     }
 }
 
-uint8_t DS18B20_Detect(uint8_t *buff, uint8_t *stack, uint8_t split_point)
+uint8_t DS18B20_Search(uint8_t *buff, uint8_t *stack, uint8_t split_point)
 {
     uint8_t len = 64, pos = 0;
     /* Start from deepest point */
diff --git a/demo/gpio/ds18b20/single-ds18b20/ds18b20.h b/demo/gpio/ds18b20/single-ds18b20/ds18b20.h
index e4a3654..aa73216 100644
--- a/demo/gpio/ds18b20/single-ds18b20/ds18b20.h
+++ b/demo/gpio/ds18b20/single-ds18b20/ds18b20.h
@@ -163,6 +163,6 @@ void DS18B20_ReadScratchpadFromAddr(const uint8_t *addr, uint8_t *buf);
  * @param split_point deepest split point of last search
  * @return new split point
  */
-uint8_t DS18B20_Detect(uint8_t *buff, uint8_t *stack, uint8_t split_point);
+uint8_t DS18B20_Search(uint8_t *buff, uint8_t *stack, uint8_t split_point);
 
 #endif // __DS18B20_H_