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--- en:i2c [2014/12/20 17:54] – further translation fluktuacia
+++ en:i2c [2014/12/21 00:39] – [Linking of I²C devices] kaklik
@@ Line 3: / Line 3: @@
 ====== I²C bus as an MLAB's component ======
-[[http://en.wikipedia.org/wiki/I²C|I²C bus]], also called TWI is a popular electronic bus designed for low-speed communication between different peripherals. As an MLAB's component it is mostly used to ensure communication between microprocessor and sensors. I²C derivative [[http://en.wikipedia.org/wiki/System_Management_Bus|SMUus]] differs from it in that it contains timeouts' definitions and Packet Error Checking and therefor is, in sense, more robust than the original I²C.
+[[http://en.wikipedia.org/wiki/I²C|I²C bus]], also called TWI is a popular electronic bus designed for low-speed communication between different peripherals. As an MLAB's component it is mostly used to ensure communication between microprocessor and sensors. I²C derivative [[http://en.wikipedia.org/wiki/System_Management_Bus|SMBus]] differs from it in that it contains timeouts' definitions and Packet Error Checking and therefor is, in sense, more robust than the original I²C.
-Thanks to an advancement in computer technologies [[cs:arm|new possibilities]] arise allowing the use of the bus for direct communication between sensors and Linux systems. Furthermore, with the help of [[cs:usbi2c|I²C adapter ]] the bus can be connected to PC as well.
+Thanks to an advancement in computer technologies [[en:arm|new possibilities]] arise allowing the use of the bus for direct communication between sensors and Linux systems. Furthermore, with the help of [[en:usbi2c|I²C adapter]] the bus can be connected to PC as well.
 ===== Linking of I²C devices =====
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 Although the I²C bus was originally designed to link devices on small scales (within the dimensions of PCB), using certain techniques it is possible to enlarge its range to tens of meters (( [[http://cladlab.com/electronics/circuit-design/communication-protocols/i2c-protocol#gallery|I2C Transmission Distances And Buffer’s]] )). However, it must be noted that such approach may not be safe because over long wires a high voltage can be electrostaticilly and electormagnetically induced and can cause damage to connected devices. The exact distance over which it is safe to use the I²C bus depends on the surrounding environment and the required reliability of the system.
-Linking of I²C devices within MLAB is implemented on several levels according to extent of a network. Locally (on scale of several meters), the modules are connected by MLAB cables and separated by [[cs:i2chub]]. This module also solves the conversion between logic 3.3V and +5V.
+Linking of I²C devices within MLAB is implemented on several levels according to extent of a network. Locally (on scale of several meters), the modules are connected by MLAB cables and separated by [[en:i2chub]]. This module also solves the conversion between logic 3.3V and +5V.
-Over more extensive distances the bus is linked through shielded signal cables ending in female connectors and connected to [[cs:uniserial]] module. This module also contains a basic surge protection and most importantly acts as a mechanical bridge between 'heavy external wiring' and fine internal linking of devices.
+Over more extensive distances the bus is linked through shielded signal cables ending in female connectors and connected to [[en:uniserial|UniSerial]] module. This module also contains a basic surge protection and most importantly acts as a mechanical bridge between 'heavy external wiring' and fine internal linking of devices.
 In the case of extensive networks I²C is replaced by other physical layer (CAN, Ethernet) that interconnects individual I²C network segments.
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 Pymlab represents a software package that enables a creation of network made of I²C devices and modules, which serve as routing points. It defines the structure of a network and addresses of individual nodes in a source file of a control program. Individual points in the network can than be accessed using simple python commands.
-The installation of the [[cs:pymlab|pymlab]] packed can easily be done using following command:
+The installation of the [[en:pymlab|pymlab]] packed can easily be done using following command:
   sudo pip install pymlab
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   * [[http://www.headfuzz.co.uk/?q=usbtoi2c|OpenServo interface]]
-These share a common problem with a quality of drivers. Furthermore, i2c-tiny-usb does not fully meet the I²C specification, completely fails to comply with USB physical layer specification and only has maximal communication speed of 50Kbps. MLAB replaces these constructions with [cs:i2c_avr_usb|I2C AVR USB]] device that is equivalent to i2c-tiny-usb design, but made of MLAB modules.  [[cs:i2c-pic-usb| I²C to USB with PIC connector]] represent another, yet unfinished, alternative.
+These share a common problem with a quality of drivers. Furthermore, i2c-tiny-usb does not fully meet the I²C specification, completely fails to comply with USB physical layer specification and only has maximal communication speed of 50Kbps. MLAB replaces these constructions with [[en:i2c_avr_usb|I2C AVR USB]] device that is equivalent to i2c-tiny-usb design, but made of MLAB modules.  [[en:i2c-pic-usb| I²C to USB with PIC connector]] represent another, yet unfinished, alternative.
 ==== USB HID ====
-To connect without having to use drivers designed for specific hardware [[http://en.wikipedia.org/wiki/USB_human_interface_device_class|USB HID]] specification can be used. MLAB has only one module that complies with this particular specification - [[cs:usbi2c|USBI2C01A]]. It can be operated using python or HIDAPI - see below.
+To connect without having to use drivers designed for specific hardware [[http://en.wikipedia.org/wiki/USB_human_interface_device_class|USB HID]] specification can be used. MLAB has only one module that complies with this particular specification - [[en:usbi2c|USBI2C01A]]. It can be operated using python or HIDAPI - see below.