Frequently Asked Question
DIS 1-wire programming interface
Last Updated 3 years ago
DIS-1-Wire is a device configuration protocol developed by DIS. This protocol is designed so that the QG40N series sensor (Analog and switched outputs) can be configured and Firmware can be updated. The cable length is limited, max is 5m.
As its name says, it is able to transmit clock, data with only one wire. It adopts a serial protocol using a single data line plus ground reference for communication. A 1-Wire master initiates and controls the communication with one or more 1-Wire slave devices on the 1-Wire bus (Figure 26). Each 1-Wire slave device has a unique, unalterable, factory-programmed, 64-bit identification number (ID), which serves as a device address on the 1-Wire bus. The 8-bit family code, a subset of the 64-bit ID, identifies the device type and functionality.
The problem with 1-wire is that we see often unexpected communication errors. The voltage level of the 1-wire signal is low and therefore the signal sampling is often very critical. Besides that, the clock on the serial interface is important to maintain the data accuracy, that’s why on our sensor side a crystal is needed to generate a stable clock signal.
more:
https://www.maximintegrated.com/en/products/ibutton-one-wire/one-wire.html#popupmodal
https://en.wikipedia.org/wiki/1-Wire
As its name says, it is able to transmit clock, data with only one wire. It adopts a serial protocol using a single data line plus ground reference for communication. A 1-Wire master initiates and controls the communication with one or more 1-Wire slave devices on the 1-Wire bus (Figure 26). Each 1-Wire slave device has a unique, unalterable, factory-programmed, 64-bit identification number (ID), which serves as a device address on the 1-Wire bus. The 8-bit family code, a subset of the 64-bit ID, identifies the device type and functionality.
The problem with 1-wire is that we see often unexpected communication errors. The voltage level of the 1-wire signal is low and therefore the signal sampling is often very critical. Besides that, the clock on the serial interface is important to maintain the data accuracy, that’s why on our sensor side a crystal is needed to generate a stable clock signal.
more:
https://www.maximintegrated.com/en/products/ibutton-one-wire/one-wire.html#popupmodal
https://en.wikipedia.org/wiki/1-Wire