Cytron Technical Forum

Does anyone have a MicroPython SDCard Example which works with the Maker-Pi-Pico ?
I've tried everything I can find on the internet but I cannot get them to work with the built in SD Card.

Everything works great with Circuitpython just NOT MicroPython.

CODE: SELECT_ALL_CODE


import machine
import sdcard
import uos

# Assign chip select (CS) pin (and start it high)
cs = machine.Pin(15, machine.Pin.OUT)

# Intialize SPI peripheral (start with 1 MHz)
spi = machine.SPI(1,
                  baudrate=1000000,
                  polarity=0,
                  phase=0,
                  bits=8,
                  firstbit=machine.SPI.MSB,
                  sck=machine.Pin(10),
                  mosi=machine.Pin(11),
                  miso=machine.Pin(12))

# Initialize SD card
sd = sdcard.SDCard(spi, cs)

# Mount filesystem
vfs = vos.VfsFat(sd)                                     <-------Dies Here
uos.mount(vfs, "/sd")

# Create a file and write something to it
with open("/sd/test01.txt", "w") as file:
    file.write("Hello, SD World!\r\n")
    file.write("This is a test\r\n")

# Open the file we just created and read from it
with open("/sd/test01.txt", "r") as file:
    data = file.read()
    print(data)



Here is the error I get:

Traceback (most recent call last):
File "<stdin>", line 23, in <module>
File "sdcard.py", line 238, in readblocks
OSError: [Errno 5] EIO

I Tracked into the problem,

Micropython was NOT liking my SD card. Even though Circuitpython liked it.
I changed cards to a 32 GB card ( was a 2 BG Card) and it read.

CODE: SELECT_ALL_CODE

from machine import Pin, SPI
import sdcard
import os

def OpenSD():
sd_spi = SPI(1, sck = Pin(10, Pin.OUT), mosi = Pin(11, Pin.OUT), miso = Pin(12, Pin.OUT))
# Create SDCard object
sd = sdcard.SDCard(sd_spi, Pin(15, Pin.OUT))
os.mount(sd, "/sd")
os.listdir("/sd")
print("Mounted")

def CloseSD():
os.umount("/sd")
print("UMount")


Problem was ALL mine! Sorry.
Please Close Issue