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 and Pico 2W.
All other functionality is on the fly or per Preload or Extra.
RP2040 Specific Board and Libraries
This is the same for both Pico W and Pico 2W.
Boards manager URL
https://github.com/earlephilhower/arduino-pico/releases/download/global/package_rp2040_index.json
Libraries
Compiling WIO for target Pico W and Pico 2W, 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 following file on this drive:
- Pico W WIO.ino.uf2
- Pico 2W WIO.ino.uf2
- Ready.
Setup
The easiest way is to use the Maintenance Tab in the WIO Dialog.
OTA update
Use the
- Pico W WIO.ino.bin
- Pico 2W 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) |
Charlieplexing
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 | |
Servo 5-12 only with the option I/O1 Servos activated see: Bank 1.
| 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.