Table of Contents
WIOpico 16 I/O
WIO Overview → WIOesp & WIOpico
- WIO Overview | WIO Setup | WIO Control | User Bitmaps | WIO Firmware | WIO Mobile | Cable | LEDScript | IOScript | WIOpi
 |  |  |
| PicoW | PCB | PCB + PicoW |
Introduction
The Pico-W is pin compatible with the Pico. But features also a WiFi connection module.
GCA Extension Units
Not all GCA Extension Units are 3V3 compatible; Check the documentation.
If 5V I/O is needed: Check the WIO-01 and WIO-02 or a Level Shifter like the GCA-OK1.
Notes
Type
The IO16 and Control type are the only one available for the Pico-W.
RP2040 Specific Board and Libraries
Boards manager URL:
https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
Compiling WIO for target Pico-W, RP2040, needs a few extra Arduino libraries:
- RP2040_PWM
- RPI_PICO_TimerInterrupt
- LittleFS_Mbed_RP2040
SparkFun APDS9960 Library
Line 198 in the Arduino/libraries/SparkFun_APDS9960.h must be changed from NA_STATE into NO_STATE because it conflicts with the WiFi RP2040 library.
This Enum value ist not used in the Arduino/libraries/SparkFun_APDS9960.cpp. (implementation)
Install
- Keep the Pico button pressed at connecting to USB. (Important: The USB cable has to be a data cable, a charging-only cable doesn't work)
- The Pico will behave like a removable drive.
- Copy the WIO.ino.uf2 file on this drive.
- Ready.
Setup
The easiest way is to use the Maintenance Tab in the WIO Dialog.
OTA update
Use the WIO.ino.bin file for the OTA upload on the update tab of the WIO Dialog.
Pins
I2C
| I2C | Pin | Remark |
|---|---|---|
| SDA | GP4 | 10k pull-up |
| SCL | GP5 | 10k pull-up |
Serial
| UART0 | Pin |
|---|---|
| TX | GP0 |
| RX | GP1 |
NeoPixel
| NeoPixel | Pin | |
|---|---|---|
| Data | GP2 | Disabled in case of Charlyplexing. |
Battery
| Battery | Pin | Remark |
|---|---|---|
| Voltage | GP28 | Disabled in case of stepper. Resistors: (+)–[100k]–(aIN)–[33k]–(-) |
Servo
| Servo | Pin | Remark |
|---|---|---|
| 1 | GP6 | 270Ω protection resistor between GP and servo. |
| 2 | GP7 | idem |
| 3 | GP8 | idem |
| 4 | GP9 | idem |
With the option I/O1 Servos activated see: Bank 1.
Stepper
| Pin | 4-wire | 3-wire | Remark |
|---|---|---|---|
| GP10 | IN1 | CLK+ | step, define as output |
| GP11 | IN2 | DIR+ | define as output |
| GP12 | IN3 | ENABLE+ | define as output |
| GP13 | IN4 | - | define as output |
| GP28 | CAL | CAL | Hall/Reed calibrate sensor (Battery check will be disabled.) |
Mobile
| Pin | Mobile | Remark |
|---|---|---|
| GP10 | ENA | H-Bridge enable (ENA) |
| GP11 | IN1 | H-Bridge input 1 (IN1) |
| GP12 | IN2 | H-Bridge input 2 (IN2) |
| GP13 | Lights |
Control
| Pin | Throttle | Remark |
|---|---|---|
| GP10 | ROT1 | Rotary connection 1 |
| GP11 | ROT2 | Rotary connection 2 |
| GP12 | ROTSW | Rotary switch |
| GP13 | F0 | Function button 0 |
| GP14 | F1 | Function button 1 |
| GP15 | F2 | Function button 2 |
| GP16 | F3 | Function button 3 |
| GP17 | F4 | Function button 4 |
| GP18 | SHIFT | Function shift |
DCC
| Pin | I/O2 | Usage | Remark | H-Bridge Main |
|---|---|---|---|---|
| GP20 | 5 | DCC1 | DCC+ signal | IN1 |
| GP21 | 6 | DCC2 | DCC- signal | IN2 |
| GP22 | 7 | PT | H-Bridge PT enable | |
| GP26 | 8 | PT-ACK | Pickup the acknowledge from the mobile decoder | |
| GP27 | 9 | Reserved | For load(A) in future versions | |
| GP3 | 10 | Main | H-Bridge Main enable | EN |
RFID
WIO version 952+
- Two RFID MFRC522 readers are supported.
- It needs 5 extra ports.
- Reporting addresses are 100 and 101. (In Rocrail 101 and 102.)
- Automatic sensor off event after 1500ms. (Before it must be acknowledged by the server.)
- Four times retry until acknowledge, then give up.
| Signal | Pico Port | WIOpico01 | RFID RC522 |
|---|---|---|---|
| Slave Select 1 | GP17 | 1-8 | 1 (SDA) reader 1 |
| Slave Select 2 | GP15 | 1-6 | 1 (SDA) reader 2 |
| SCK | GP18 | 2-1 | 2 (SCK) |
| MOSI | GP19 | 2-2 | 3 (MOSI) |
| MISO | GP16 | 1-7 | 4 (MISO) |
Charlyplexing
Example products: Multiplex signals by Viessmann
Signal settings
- Control: Aspect numbers
- Type Multiplex
See also Charlieplexing signal support.
| Wire | GP | Remark |
|---|---|---|
| 1 | 10 | Main signal Adress 1, Distant signal Adress 101 |
| 2 | 11 | |
| 3 | 12 | |
| 4 | 13 | |
| 1 | 14 | Main signal Adress 5, Distant signal Adress 105 |
| 2 | 15 | |
| 3 | 16 | |
| 4 | 17 | |
| 1 | 18 | Main signal Adress 9, Distant signal Adress 109 |
| 2 | 19 | |
| 3 | 20 | |
| 4 | 21 | |
| 1 | 22 | Main signal Adress 13, Distant signal Adress 113 |
| 2 | 26 | |
| 3 | 27 | |
| 4 | 3 |
All I/O used must be defined as an output.
I/O
| Bank 1, connector I/O1 | |||||
|---|---|---|---|---|---|
| Pin | Port | Nr. | GP | Remark | I/O1 Servos |
| 1 | - | - | - | +3.3V | |
| 2 | - | - | - | Mass | |
| 3 | 1 | 14 | GP10 | Optional 10k pull-up resistors to 3,3 V at all. | Servo 5 |
| 4 | 2 | 15 | GP11 | Servo 6 | |
| 5 | 3 | 16 | GP12 | Servo 7 | |
| 6 | 4 | 17 | GP13 | Servo 8 | |
| 7 | 5 | 19 | GP14 | Servo 9 | |
| 8 | 6 | 20 | GP15 | Servo 10 | |
| 9 | 7 | 21 | GP16 | Servo 11 | |
| 10 | 8 | 22 | GP17 | Servo 12 | |
| Bank 2, connector I/O2 | ||||
|---|---|---|---|---|
| Pin | Port | Nr. | GP | Remark |
| 1 | - | - | - | +3.3V |
| 2 | - | - | - | Mass |
| 3 | 9 | 24 | GP18 | Optional 10k pull-up resistors to 3,3 V at all. |
| 4 | 10 | 25 | GP19 | |
| 5 | 11 | 26 | GP20 | |
| 6 | 12 | 27 | GP21 | |
| 7 | 13 | 29 | GP22 | |
| 8 | 14 | 31 | GP26 | |
| 9 | 15 | 32 | GP27 | |
| 10 | 16 | 5 | GP3 | |
WIO-PicoW-01
GCA PCB for the WIOpico.
Connectors
| Connector | Pin(s) | Remark 1 | Remark 2 |
|---|---|---|---|
| BAT1 | - | Power/Battery source | R-78E-5 |
| I/O1 | GP10…GP17 | 10k resistor array for pull-up | The internal pull-up is often not sufficient. |
| I/O2 | GP18…GP22, GP26, GP27 and GP3 | 10k resistor array for pull-up | idem |
| I2C1 | GP4 and GP5 | 3k3 pull-up | VCC and GND |
| TRX1 | GP0 and GP1 | UART | VCC and GND |
| NP1 | GP2 | +5V and GND | |
| Ser1…4 | GP6…GP9 | 270 Ohm resister in between the data line | +5V and GND |
| Hall1 | GP28 | JP1 selection Hall. +5V and GND | |
| - | GP28 | Battery check: 100k/33k | JP1 selection Battery |
Notes
- +5V on servo, pixel, UART and I2C connectors only in case of external power supply.