connecting SD card to NodeMCU using GPIO 6,7,8,11

Using Arduino Project Guidance
#1

MY project to monitor my network and router is using all 9 pins D0-D8 to operate LEDS.
I need to log data to an SD card - but the examples on the web all require the use of
D5-D8 as HSCLK, HMISO, HMOSI, HCS && GND &Vcc

Has anyone managed to connect an SD card via SDI Interface using the pins GPIO 6,7,8,11
shown on the pin-out data sheet as SCLK, MISO, CS, MOSI?

#2

https://arduino-esp8266.readthedocs.io/en/latest/libraries.html?highlight=spi#spi

you would have to use a mandatory CS pin which would be controlled by the flash memory controller. I don't think the SD library could work that way.

you can find details in esp8266-technical_reference_en.pdf in chapter 5. SPI Overlap & Display Application Guide

#3

How much data.
I assume you know you can use part of the flash memory of the NodeMCU (4MB) to store data.
Leo..

#4

Thanks Leo, yes spiffs;
I'm wanting to save the ntp time on a 5 min rolling basis to monitor my broadband connection.
Having read this I wont worry about wear!

I'll have to rethink how I will get the data back from it - via the web rather then just reading the sd card; however it looks from Juraj's reply that the sd card route is a nono.

Thanks!

John

#5