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| Both sides previous revision Previous revision Next revision | Previous revision | ||
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en:xu4_hardware_1wire [2017/07/13 16:20] ck.kim [Change the Default GPIO pin for 1-Wire interface] |
en:xu4_hardware_1wire [2017/07/17 10:48] (current) luke.go |
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| Line 8: | Line 8: | ||
| <WRAP left round tip 70%> | <WRAP left round tip 70%> | ||
| - | XU3 / XU4 CON10(30 pin) All GPIO and AIN pins use VDD_IO (1.8V) for the signals. | + | XU3 / XU4 CON10(30 pin) All GPIO and AIN pins use VDD_IO (1.8V) for the signals. \\ |
| - | level converter is required to connect the sensor. | + | So the level converter is required to connect the sensor. |
| + | |||
| + | Hardkernel Shifter-Shield is not working well with multiple 1-wire devices due to a timing issue.\\ | ||
| + | So we used Sparkfun [[https://www.sparkfun.com/products/12009|Level converter board]] | ||
| </WRAP> | </WRAP> | ||
| - | \\ | ||
| - | \\ | ||
| \\ | \\ | ||
| \\ | \\ | ||
| Line 25: | Line 26: | ||
| CON10 Pin 26 (XE.INT16): Level converter LV1 \\ | CON10 Pin 26 (XE.INT16): Level converter LV1 \\ | ||
| Sensor signal : Level converter HV1 \\ | Sensor signal : Level converter HV1 \\ | ||
| + | {{:en:level_shifter.jpg?nolink|}} | ||
| * **Connection: With External-Supply** | * **Connection: With External-Supply** | ||
| Line 63: | Line 64: | ||
| </code> | </code> | ||
| - | Temperature is t=27375or 27.375 degree's Celsius. | + | Temperature is t=27375 or 27.375 degree's Celsius. |
| Line 76: | Line 77: | ||
| </code> | </code> | ||
| Two sensors in parallel. | Two sensors in parallel. | ||
| - | |||
