ATOM TF-CARD Kit SPI pins are not default SPI pins?

mviewlab

Hi,

I just wanted to ask if the pins used for SD card interface on ATOM TF-CARD Kit are just GPIO pins and they not default SPI pins of ESP32 Pico?
Because I tried to use it with esp-idf and it does not work. Because SD card driver of esp-idf uses default SPI pins.

Can you please suggest any way to use ATOM TF-CARD Kit with esp-idf?

Thanks

felmue

Hello @mviewlab

yes, they are just GPIO pins. Please checkout the pinmap here.

Thanks
Felix

pieter

How to use the ATOM TF-Card in Python?

I tried to mount the TF-CARD as below with my ATOM Matrix but it when I load my code I get a red cross on the display. (I use cs=21 because it is not used in the ATOM)

import uos
uos.sdconfig(uos.SDMODE_SPI,clk=23,mosi=19,miso=33,cs =21)
uos.mountsd()

felmue

Hello @pieter

this works for me:

from machine import SDCard
from machine import Pin
import os

try:
    sd = SDCard(slot=3, miso=Pin(33), mosi=Pin(19), sck=Pin(23), cs=Pin(4))
    sd.info()
    os.mount(sd, '/sd')
    print("SD card mounted at \"/sd\"")
except (KeyboardInterrupt, Exception) as e:
    print('SD mount caught exception {} {}'.format(type(e).__name__, e))
    pass

print(os.listdir('/sd'))

Note: mostly taken from boot.py from an M5Core2 with modified pin config. CS pin is not really required as the SD card always selected anyways.

Thanks
Felix

pieter

@felmue said in ATOM TF-CARD Kit SPI pins are not default SPI pins?:

sd.info()

Hi Felix,
Thanks a lot.
Your solution also works for me.