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Last modified by Xiaoling on 2025/04/23 15:57
From version 33.9
edited by Xiaoling
on 2022/06/02 10:06
Change comment: There is no comment for this version
To version 33.3
edited by Xiaoling
on 2022/06/02 09:56
Change comment: There is no comment for this version

Summary

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... ... @@ -1093,75 +1093,79 @@
1093 1093  **07 02 aa bb**  Same as AT+3V3T=(aa bb)
1094 1094  
1095 1095  
1096 -== 3.6 Buttons ==
1097 1097  
1098 -(% border="1" style="background-color:#ffffcc; color:green; width:233px" %)
1099 -|=(% style="width: 89px;" %)**Button**|=(% style="width: 141px;" %)**Feature**
1100 -|(% style="width:89px" %)**RST**|(% style="width:141px" %)Reboot RS485-BL
1101 1101  
1102 -== 3.7 +3V3 Output ==
1098 +1.
1099 +11. Buttons
1103 1103  
1101 +|**Button**|**Feature**
1102 +|**RST**|Reboot RS485-BL
1103 +
1104 +1.
1105 +11. +3V3 Output
1106 +
1104 1104  RS485-BL has a Controllable +3V3 output, user can use this output to power external sensor.
1105 1105  
1106 1106  The +3V3 output will be valid for every sampling. RS485-BL will enable +3V3 output before all sampling and disable the +3V3 after all sampling. 
1107 1107  
1111 +
1108 1108  The +3V3 output time can be controlled by AT Command.
1109 1109  
1114 +**AT+3V3T=1000**
1110 1110  
1111 -(% style="color:#037691" %)**AT+3V3T=1000**
1112 -
1113 -
1114 1114  Means set +3v3 valid time to have 1000ms. So, the real +3v3 output will actually have 1000ms + sampling time for other sensors.
1115 1115  
1118 +
1116 1116  By default, the AT+3V3T=0. This is a special case, means the +3V3 output is always on at any time
1117 1117  
1118 1118  
1119 -== 3.8 +5V Output ==
1122 +1.
1123 +11. +5V Output
1120 1120  
1121 1121  RS485-BL has a Controllable +5V output, user can use this output to power external sensor.
1122 1122  
1123 1123  The +5V output will be valid for every sampling. RS485-BL will enable +5V output before all sampling and disable the +5v after all sampling. 
1124 1124  
1129 +
1125 1125  The 5V output time can be controlled by AT Command.
1126 1126  
1132 +**AT+5VT=1000**
1127 1127  
1128 -(% style="color:#037691" %)**AT+5VT=1000**
1129 -
1130 -
1131 1131  Means set 5V valid time to have 1000ms. So, the real 5V output will actually have 1000ms + sampling time for other sensors.
1132 1132  
1136 +
1133 1133  By default, the AT+5VT=0. If the external sensor which require 5v and require more time to get stable state, user can use this command to increase the power ON duration for this sensor.
1134 1134  
1135 1135  
1136 -== 3.9 LEDs ==
1137 1137  
1138 -(% border="1" style="background-color:#ffffcc; color:green; width:332px" %)
1139 -|=**LEDs**|=(% style="width: 274px;" %)**Feature**
1140 -|**LED1**|(% style="width:274px" %)Blink when device transmit a packet.
1141 1141  
1142 +1.
1143 +11. LEDs
1142 1142  
1143 -== 3.10 Switch Jumper ==
1145 +|**LEDs**|**Feature**
1146 +|**LED1**|Blink when device transmit a packet.
1144 1144  
1145 -(% border="1" style="background-color:#ffffcc; color:green; width:515px" %)
1146 -|=(% style="width: 124px;" %)**Switch Jumper**|=(% style="width: 388px;" %)**Feature**
1147 -|(% style="width:124px" %)**SW1**|(% style="width:388px" %)(((
1148 +1.
1149 +11. Switch Jumper
1150 +
1151 +|**Switch Jumper**|**Feature**
1152 +|**SW1**|(((
1148 1148  ISP position: Upgrade firmware via UART
1149 1149  
1150 1150  Flash position: Configure device, check running status.
1151 1151  )))
1152 -|(% style="width:124px" %)**SW2**|(% style="width:388px" %)(((
1157 +|**SW2**|(((
1153 1153  5V position: set to compatible with 5v I/O.
1154 1154  
1155 1155  3.3v position: set to compatible with 3.3v I/O.,
1156 1156  )))
1157 1157  
1158 -**+3.3V**: is always ON
1163 ++3.3V: is always ON
1159 1159  
1160 -**+5V**: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1165 ++5V: Only open before every sampling. The time is by default, it is AT+5VT=0.  Max open time. 5000 ms.
1161 1161  
1167 +1. Case Study
1162 1162  
1163 -= 4. Case Study =
1164 -
1165 1165  User can check this URL for some case studies.
1166 1166  
1167 1167  [[http:~~/~~/wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS>>url:http://wiki.dragino.com/index.php?title=APP_RS485_COMMUNICATE_WITH_SENSORS]]