Tibbo WS1102 Manuale utente

Programmable Hardware

Manual

WS1102

Table of Contents

WS1102 Programmable Wireless RS232/422/485 Controller 3

Power Arrangement .................................................................................................................. 7

Serial Port .................................................................................................................................. 7

Definition of RS422 and RS485 Modes .......................................................................................... 10

Flash and EEPROM Memory .................................................................................................... 10

Buzzer ....................................................................................................................................... 11

Built-in Wi-Fi and BLE .............................................................................................................. 12

LED Bar ..................................................................................................................................... 12

DIN Rail and Wall Mounting Plates ........................................................................................ 13

Status LEDs (LED Control Lines) ............................................................................................. 15

Federal Communications Commission (FCC) Statement ..................................................... 16

Online Documentation ........................................................................................................... 16

WS1102 Programmable Wireless RS232/422/485 Controller

WS1102 Programmable Wireless RS232/422/485

Controller

Introduction

The WS1102 is a compact Tibbo BASIC/C-programmable wireless controller equipped with an

RS232/422/485 serial port. The product targets serial-over-IP (SoI) and serial control

applications.

This cloud-native device incorporates Wi-Fi (802.11a/b/g/n over 2.4GHz/5GHz) and Bluetooth

Low Energy (BLE) interfaces that introduce several new features, such as Wi-Fi auto-connects,

wireless debugging, over-the-air (OTA) updates, and Transport Layer Security (TLS) support. As

WS1102 Programmable Wireless RS232/422/485 Controller

a vendor-agnostic product, it can communicate with Microsoft Azure, Google Cloud, Amazon

Web Services (AWS), and virtually any other cloud services provider.

There are eight LEDs on the device's front: green and red main status LEDs, a yellow access

point association (link) LED, and five blue LEDs, which can be used for Wi-Fi signal strength

indication or other purposes. A buzzer is provided as well.

Each WS1102 is supplied with a DIN rail and wall mounting plates.

The WS1102 comes preloaded with a full-featured Serial-over-IP (SoI) application that turns the

WS1102 into a powerful serial-over-IP (SoI) device (a.k.a. a "device server"). A versatile Modbus

Gateway application is also available.

Hardware Features

Stores up to two compiled Tibbo BASIC/C binaries (apps)(1)

oA Device Configuration Block (DCB)(2) defines which of the two apps normally runs on

power-up

oForced launch of APP0 through the MD button

Wi-Fi interface (802.11a/b/g/n)

oControlled via a simple-to-use, yet sophisticated API

oTLS1.2 with RSA-2048 cryptosystem(3)

oOptional "autoconnect" — automatic association with a designated Wi-Fi network as

defined by the DCB(2)

oOptional debugging of Tibbo BASIC/C applications via the Wi-Fi interface(4)

Bluetooth Low Energy (BLE 4.2)

oControlled via a simple-to-use, yet sophisticated API

oCan access the DCB via a new, integrated console(2)

Internal Wi-Fi/BLE antenna

RS232/422/485 port on a DB9M connector

oPort modes are software-selectable

oTX, RX, RTS, CTS, DTR(5), and DSR(5) lines

oBaudrates of up to 921,600bps

oNone/even/odd/mark/space parity modes

o7 or 8 bits/character

oRTS/CTS and XON/XOFF flow control

WS1102 Programmable Wireless RS232/422/485 Controller

Built-in buzzer

RTC (no backup battery)

58KB SRAM for Tibbo BASIC/C variables and data

4MB flash for code storage

oSystem files and TiOS occupy a combined 2,408KB

o1,688KB available for storing up to two app binaries

Additional 4MB flash for the hardened fault-tolerant file system

2048-byte EEPROM for data storage

Eight LEDs

oGreen and red main status LEDs

oYellow access point association (link) LED

oFive blue LEDs (for Wi-Fi signal strength indication, etc.)

Power: 12VDC (9 ~ 18V)(6)

oCurrent consumption at idle of 55mA ~ 65mA @12VDC

oCurrent consumption when in operation (transferring data) of ~80mA @12VDC with spikes

of up to 130mA

Dimensions (LxWxH): 90 x 48 x 25mm

Operating temperature range: –40°C to +85°C(6)(7)

Firmware and compiled Tibbo BASIC/C apps can be updated via:

oSerial port

oWi-Fi interface

oBluetooth Low Energy (BLE) interface

Tibbo BASIC/C applications can be debugged via Wi-Fi(4) or serial port(5)

Supplied with an SoI app preloaded

Supplied with an SoI companion app preloaded

oThe app allows editing of the DCB from the L.U.I.S. smartphone app (available for iOS and

Android)

oUsers are free to modify the app for additional functionality

1. Although two independent Tibbo BASIC/C compiled binaries (apps) can be stored in the WS1102's

flash memory, only one can run at a time.

2. Several of the WS1102's configuration parameters are stored in the DCB, which is accessible via a

new integrated console. Our BLE Terminal web app leverages the Web Bluetooth API (compatible

WS1102 Programmable Wireless RS232/422/485 Controller

with the Chrome, Chromium, Edge, and Opera web browsers) to connect to the WS1102's console.

Configuration properties can also be read and set through Tibbo BASIC/C code.

3. TLS is supported on a single outgoing TCP connection.

4. To enable Wi-Fi debugging, you must enable autoconnect — automatic association with a

designated Wi-Fi network. This can be accomplished via the integrated BLE console or in code.

5. The TX and RX line of the debugging UART are connected to the DTR and DSR lines of the serial

port. When the serial debugging is enabled, these lines cease functioning as the DTR and DSR

lines. To avoid occupying the DTR and DSR lines for debugging, use wireless debugging instead.

The debug mode can be selected via the integrated BLE console or in code.

6. The WS1102 is compliant with the IEC/EN 62368-1 safety standard in the –40°C to +85°C range.

To maintain this compliance in the field, use an external DC power source outputting 0.5A @

9VDC ~ 18VDC (less than 15W) that is also IEC/EN 62368-1 certified and can operate in the –40°C

to +85°C range.

7. Tested according to procedures I, II, and III of MIL-STD-810H Method 501.7 and MIL-STD-810H

Method 502.7.

Programming features

Platform objects:

oadc — provides access to three ADC channels

obeep — generates buzzer patterns(1)

obt — in charge of the BLE (Bluetooth Low Energy) interface(1)

obutton — monitors the MD (setup) line

ofd — manages the flash memory file system and direct sector access(1)

oio — handles I/O lines, ports, and interrupts

okp — works with matrix and binary keypads

opat — "plays" patterns on up to five LED pairs

oppp — accesses the Internet over a serial modem (GPRS, etc.)

opwm — handles pulse-width modulation channels(1)

oromfile — facilitates access to resource files (fixed data)

ortc — keeps track of date and time

oser — controls the serial ports (UART, Wiegand, clock/data modes)(1)

osock — socket comms (up to 32 UDP, TCP, and HTTP sessions) and support for TLS(2)

ossi — controls serial synchronous interface channels (SPI, I²C)

ostor — provides access to the EEPROM

WS1102 Programmable Wireless RS232/422/485 Controller

osys — in charge of general device functionality(1)

owln — handles the Wi-Fi interface1

Function groups: String functions, trigonometric functions, date/time conversion functions,

encryption/hash calculation functions, and more

Variable Types: Byte, char, integer (word), short, dword, long, real, and string, as well as user-

defined arrays and structures

Notes:

1. These platform objects are either new or have new features (as compared to the EM2000).

2. TLS1.2 with RSA-2048 cryptosystem, supported on a single outgoing TCP connection.

Power Arrangement

The WS1102 can only be powered through the power jack.

The power jack accepts "small" power connectors with a 3.5mm diameter.

On the power jack, the ground is "on the outside," as shown in the figure below.

Serial Port

The WS1102 features a multimode RS232/422/485 port. Physically, the port is implemented as

a single DB9M connector.

Note: See Definition of RS422 and RS485 Modes for information on how these modes are

implemented on the WS1102.

Port pin assignment

In the RS232 mode, the serial port of the WS1102 has three output and three input lines. In the

RS422 mode, you get two output and two input line pairs. The RS485 mode offers one output

line pair and one input line pair. These are not independent — they operate in the half-duplex

mode.

The serial port of the WS1102 is controlled via the ser. object (see the TIDE, TiOS, Tibbo BASIC,

and Tibbo C Manual).

WS1102 Programmable Wireless RS232/422/485 Controller

RS232

RS422***

RS485***

RTS– (output)

RX (input)

RX– (input)

TX (output)

TX+ (output)

DTR (output)*

TX– (output)

Ground

DSR (input)**

RX+ (input)

RTS (output)

RTS+ (output)

CTS (input)

CTS+ (input)

CTS– (input)

* When serial debugging is enabled, this line ceases to work as the DTR line of the serial port and

becomes the TX line of the debug serial port.

** When serial debugging is enabled, this line ceases to work as the DSR line of the serial port and

becomes the RX line of the debug serial port.

*** Serial debugging is not possible in these modes.

Selecting the serial port mode

On the WS1102, the serial port mode is controlled via Microchip's MCP23008 I/O expander IC.

The I²C interface of this IC is connected to GPIO5 and GPIO6 of the WS1102's CPU, as shown in

the diagram below.

WS1102 Programmable Wireless RS232/422/485 Controller

Use the ssi. object (see the TIDE, TiOS, Tibbo BASIC, and Tibbo C Manual) to communicate with

the MCP23008. To select the desired serial port mode, set the state of the I/O expander's lines

GP5 and GP6 as shown in the table below (these lines are not to be confused with GPIO5 and

GPIO6, which are the CPU lines driving the I²C interface of the I/O expander). Both GP5 and

GP6 should be configured as outputs.

Serial port

mode

GP5

GP6

RS232

HIGH

LOW

RS422

HIGH

RS485

LOW

HIGH

Direction control in the RS485 mode

WS1102 Programmable Wireless RS232/422/485 Controller

In the RS485 mode, which is half-duplex, the PL_IO_NUM_3_INT1 GPIO line acts as the direction

control line. The line must be configured as an output.

Direction

PL_IO_NUM_3_INT1

Output

HIGH

Input

LOW

Definition of RS422 and RS485 Modes

To avoid any misunderstanding of what the RS422 and RS485 modes are, let's clarify that the

term "RS422 mode" refers to a full-duplex differential signaling interface with at least RX and

TX signals, and possibly with CTS and RTS signals. Each signal is carried by a pair of "+" and "–"

lines.

The term "RS485 mode" refers to a half-duplex differential signaling interface with RX and TX

lines, where each signal is also carried by a pair of "+" and "–" lines. The RTS line of the serial

port is used (within the serial controller) to control the direction, so TX and RX lines can be

combined (externally) to form a two-wire bus that carries data in both directions. On a physical

signal level (voltages, etc.), there is no difference between the RS422 and RS485 modes — they

are implemented in the same way.

The RS422 and RS485 modes typically require termination circuits. No such circuits are

provided within the WS1102. A simple 120Ω resistor (added externally) is sufficient to

terminate one "+/–" pair properly.

Flash and EEPROM Memory

These are the three types of flash memory that you will encounter on the WS1102:

Unified flash memory – stores the TiOS firmware, compiled Tibbo BASIC/C app, and,

optionally, the flash disk. All flash space not occupied by TiOS is available to the compiled

Tibbo BASIC/C app. All flash space left over from TiOS and the app can be formatted as a

fault-tolerant flash disk. The flash disk is accessible through the fd. object (see the TIDE, TiOS,

Tibbo BASIC, and Tibbo C Manual).

Program flash memory — stores the TiOS firmware and compiled Tibbo BASIC app(s). All

flash space not occupied by TiOS is available to the compiled Tibbo BASIC/C app.

Data flash memory — the entire memory space can be formatted as a fault-tolerant flash

disk. The flash disk is accessible through the fd. object.

In addition, the WS1102 is equipped with EEPROM memory. A small area at the bottom of the

EEPROM is occupied by the Special Configuration Section (SCS) that stores the device's MAC(s)

and password. The rest of the EEPROM is available to Tibbo BASIC/C applications. The EEPROM

is accessible through the stor. object (see the TIDE, TiOS, Tibbo BASIC, and Tibbo C Manual).

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