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--- how_tos:serial_port_programming [2017/03/31 13:10]
jeff
+++ how_tos:serial_port_programming [2021/09/13 05:57] (current)
@@ Line 1: / Line 1: @@
 ======Serial Port Programming======
-WattmonPRO comes with an RS-232 serial interface on pins 7 and 8 and an RS-485 port on an RJ45 connector.  The device is configured by default for RS-232 voltage levels and by using a simple DB9 cable can be connected to any serial device.  For specific devices that require TTL levels, a jumper setting inside the device can bypass the level converter IC and it can thus be used to interface with sensors or other devices at 3.3V DC.
+[[hardware:wattmons:WattmonPRO]] and [[hardware:wattmons:WattmonMEGA]] come with an RS-232 serial interface on pins 7 and 8 and an RS-485 port on an RJ45 connector.  The device is configured by default for RS-232 voltage levels and by using a simple DB9 cable can be connected to any serial device.  For specific devices that require TTL levels, a jumper setting inside the device can bypass the level converter IC and it can thus be used to interface with sensors or other devices at 3.3V DC.
 =====Using the RS-232 Serial Port=====
-To open the serial port, use the [[.functions:fseropen()]] function.
+To open the serial port, use the [[uphp:functions:fseropen()]] function.
-The serial port is treated like a file after opening and standard file functions such as [[.functions:fread()]], [[.functions:fwrite()]], [[.functions:fgets()]] and [[.functions:filesize()]] apply.
+The serial port is treated like a file after opening and standard file functions such as [[uphp:functions:fread()]], [[uphp:functions:fwrite()]], [[uphp:functions:fgets()]] and [[uphp:functions:filesize()]] apply.
 An example of using the serial port is shown below:
@@ Line 27: / Line 27: @@
 ====Jumper Settings Inside Wattmon====
-{{:wiki:rs232_mode.png?250|}} < //Settings For RS-232 Mode   //{{:wiki:ttl_mode.png?250|}} < //Settings for TTL Mode//
+{{20170318_rs232_mode.png?250|Settings for RS-232 Mode}} < //Settings for RS-232 Mode   //{{20170318_ttl_mode.png?250|Settings for TTL Mode}} < //Settings for TTL Mode//
 ====RS-232 Cable Connection====
 In order to connect to a device you will need to procure a DB9 cable (male or female) and connect it up as shown in the following diagram:
-{{:wiki:wattmonpro_rs232.png?300|}}
+{{20170318_wattmonpro_rs232.png?300|RS-232 DB9 Connection to Wattmon}}
 =====Using the RS-485 Serial Port=====
@@ Line 38: / Line 38: @@
 In order to use the RS-485 port, you need to disable modbus polling.  This is done from the Devices > Options > Edit Communication Settings as shown here:
-{{:wiki:modbus_polling_setting.png?600|}}
+{{20170318_modbus_polling_setting.png?600|Disable Modbus Polling}}
-To open the RS-485 port, use the [[.functions:f485open()]] function.
+To open the RS-485 port, use the [[uphp:functions:f485open()]] function.
-The RS-485 serial port is treated like a file after opening and standard file functions such as [[.functions:fread()]], [[.functions:fwrite()]], [[.functions:fgets()]] and [[.functions:filesize()]] apply.
+The RS-485 serial port is treated like a file after opening and standard file functions such as [[uphp:functions:fread()]], [[uphp:functions:fwrite()]], [[uphp:functions:fgets()]] and [[uphp:functions:filesize()]] apply.
 An example of using the RS-485 serial port is shown below:
@@ Line 62: / Line 62: @@
 ====RS-485 Cable Connection====
-Use a standard RJ-45 cable and cut it to connect your RS-485 device to WattmonPRO.
+Use a standard RJ-45 cable and cut it to connect your RS-485 device to [[hardware:wattmons:WattmonPRO]] or [[hardware:wattmons:WattmonMEGA]].
 ^ PIN      ^ Color      ^ Description    ^
 | 1,2      | Orange     | GND            |
@@ Line 68: / Line 68: @@
 | 5        | White-Blue | D- / B         |
-{{:wiki:rj45_connector_pinout.png|}}
+{{20170318_rj45_connector_pinout.png?450|RJ45 Connection Pinout}}

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