Difference between revisions of "Raspberry Pi Pico"

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* [[VGAX49]]
 
* [[VGAX49]]
 +
* Resistors Values
 +
 +
{| class="wikitable"
 +
!
 +
! R,B
 +
!
 +
! G RES
 +
!
 +
! G
 +
|-
 +
| Rs
 +
| 75
 +
|
 +
| R1
 +
| 390
 +
| 75
 +
|-
 +
| Rm
 +
| 270
 +
|
 +
| R2
 +
| 820
 +
| 264.298
 +
|-
 +
| Vin
 +
| 3.3
 +
|
 +
| RM
 +
| 264.298
 +
| 3.3
 +
|-
 +
| Vout
 +
| 0.717
 +
|
 +
|
 +
|
 +
| 0.729
 +
|-
 +
| I (mA)
 +
| 9.57
 +
|
 +
| I (mA)
 +
|
 +
| 9.73
 +
|-
 +
|}
  
 
===== PS2X49 =====
 
===== PS2X49 =====

Revision as of 13:08, 15 May 2022

RasPiPico 720px.jpg

Raspberry Pi Pico Features

Raspberry Pi Pico is a low-cost, high-performance microcontroller board with flexible digital interfaces. Key features include:

  • RP2040 microcontroller chip designed by Raspberry Pi in the United Kingdom
  • Dual-core Arm Cortex M0+ processor, flexible clock running up to 133 MHz
  • 264KB of SRAM, and 2MB of on-board Flash memory
  • Castellated module allows soldering direct to carrier boards
  • USB 1.1 with device and host support
  • Low-power sleep and dormant modes
  • Drag-and-drop programming using mass storage over USB
  • 26 × multi-function GPIO pins
  • 2 × SPI, 2 × I2C, 2 × UART, 3 × 12-bit ADC, 16 × controllable PWM channels
  • Accurate clock and timer on-chip
  • Temperature sensor
  • Accelerated floating-point libraries on-chip
  • 8 × Programmable I/O (PIO) state machines for custom peripheral support

Repositories

Pinout

PiPico Pins.PNG

Reference Documents

Adapter Cards

In Small Plastic Project Box

Pico Plastic Box P18136 720px.jpg

  • Fits in 100x60x25mm Project Box
  • Socketed Pico
  • All Pico pins brought to Male Header pins
  • Power/Ground distribution
  • 5V jack
    • VSYS connection with schottky diode
  • Can by Mounted on ODAS Adapter card

Cut Etch / Add wires

  • Cut etch from + near jack to board side + connections
  • Verify cut with jumper (center pin power jack to + on both sides)

CircuitSetuo Breadboard EtchCut.PNG

  • Add TIE - jumper to ties grounds on both sides together

CircuitSetuo Breadboard TieMinus.PNG

  • Add Power jumper between the two sides

CircuitSetuo Breadboard JumpPower.PNG

  • Add Ground connection Pico pin 38 to - hole near strip
  • Add 3.3V Power connection Pico pin 36 to + hole near strip on other side

Pin Table

Pico Pin BB Pin Signal Pico Pin BB Pin Signal
1 30 GP0 40 30 VUSB
2 29 GP1 39 29 VSYS
3 28 GND 38 28 GND
4 27 GP2 37 27 3V3EN
5 26 GP3 36 26 3V3OUT
6 25 GP4 35 25 ADCVREF
7 24 GP5 34 24 GP28
8 23 GND 33 23 GND
9 22 GP6 32 22 GP27
10 21 GP7 31 21 GP26
11 20 GP8 30 20 RUN
12 19 GP9 29 19 GP22
13 18 GND 28 18 GND
14 17 GP10 27 17 GP21
15 16 GP11 26 16 GP20
16 15 GP12 25 15 GP19
17 14 GP13 24 14 GP18
18 13 GND 23 13 GND
19 12 GP14 22 12 GP17
20 11 GP15 21 11 GP16

PiPico-01 Card

PiPico-01 3D.png

Interesting Applications

Running RP2040 Doom

Running MicroPython

>>> import gc
>>> gc.mem_free()
182624
>>> import time
>>> gc.mem_free()
178544
>>> import machine
>>> gc.mem_free()
174304
>>>
  • To compare QT Py has 19KB free

I2C Scanner

import machine 

# Create I2C object
i2c = machine.I2C(0, scl=machine.Pin(17), sda=machine.Pin(16))

# Print out any addresses found
devices = i2c.scan()

if devices:
    for d in devices:
        print(hex(d))

Python File System

  • Internal Flash File System
    • Little FS
    • 1.44MB space
    • Blocks are 4KB
    • 352 Blocks on Internal File System
  • os functions
import os
os.[TAB]
os.dir()
os.mkdir("newdir")
os.getcwd()
os.mkdir("newdir")
os.chdir('..')
os.listdir()
os.statvfs('/')
os.uname()
os.remove('file2remove')
os.rename('old','new')
  • Using files
f = open('filename','w')
f.write('data to add')
f.read()
f.close()

Running PicoMite (MaxiMite) BASIC

  • Two versions
    • USB-Serial with SD Card
    • VGA, PS/2 version

Running PicoMite (MaxiMite) BASIC (USB-Serial)

PicoMite SD Card Wiring
  • Install NO5V jumper
SD_Socket PIN SD-J1 Pi-Pico Pico-Pin Colour
3 GND 1 GND GND BLK
7 MISO 2 GPIO16 21 BRN
5 SCLK 3 GPIO18 24 ORA
2 MOSI 4 GPIO19 25 YEL
1 SLV SEL 5 GPIO22 29 WHT
4 VCC 7 3.3V N/C
6 GND N/C GND

Running PicoMite (MaxiMite) BASIC (VGA, PS/2)

Cabling
FUNCTION GP PICO PIN CARD SIG PIN COLOUR
AUDIO-L GP6 9 GRID49 AUD-L C1 VIO
AUDIO-R GP7 10 GRID49 AUD-GND D1 BLK
AUDIO-GND GND 8 GRID49 AUD-R E1 YEL
PS2_3.3V 3.3V 3.3V 4 RED
PS2_5V VSYS 39 PWR1 2 ORG
PS2_CLK GP8 11 CLK1 6 VIO
PS2_DATA GP9 12 DAT1 8 YEL
PS2_GND GND 13 GND 10 BLK
SD_3.3V 3.3V 3.3V 7 RED
SD_MISO GP12 16 MISO 2 YEL
SD_MOSI GP11 15 MOSI 4 BLU
SD_SCK GP10 14 SCLK VIO
SD_SLVSEL GP13 17 -SDCS GRY
SD_GND GND 18 GND BLK
VGA_BLU GP18 24 VGA B4 12 BLU
VGA_GND GND 23 VGA GND 19 GRN
VGA_GRN_HI GP20 26 VGA G5 6 GRN
VGA_GRN_LO GP19 25 VGA G4 7 GRN
VGA_HSYNC GP16 21 VGA HS 17 GRY
VGA_RED GP21 27 VGA R4 1 ORG
VGA_VSYNC GP17 22 VGA VS 18 WHT
VGAX49

VGAX49 P901-cropped-720px.jpg

R,B G RES G
Rs 75 R1 390 75
Rm 270 R2 820 264.298
Vin 3.3 RM 264.298 3.3
Vout 0.717 0.729
I (mA) 9.57 I (mA) 9.73
PS2X49

PS2X49 P897 cropped 512pxV.jpg

SD CARD X49

SDCARDX49 P935 cropped-512px.jpg

GRID49

GRID49 WIRING.PNG

Running VGA

Hardware Design Guide Section 3.2

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