Promake Storage M1

Description

The ProMake Storage M1 is an ideal solution for many projects that need more data storage capacity than what most micro-controllers provide on their internal Flash or EEPROM memories. It features a microSD card slot for microSD cards used as a mass storage media for portable devices. It designed to run on 3.3V power supply. Industry standard SPI interface ensures simple communication at high data rates. Use it for reading or storing data like audio, video or text files and more.

Furthermore, as a removable media, you have greater flexibility when it comes to access the stored data. For instance, you can log sensor data in a file on the microSD card, then physically removing it from your project to access the data directly on a computer using a card reader.

For more flexibility an I2C Enabled EEPROM is added to module that let you store your important data using a simple I2C interface.

Features

• SD or SDHC cards supported.
• On Board I2C EEPROM
• Single 3.3V supply
• FAT32 file system, support 32GB TF card
• Breadboard-friendly

Important Notes

• In order to interface the module to 5V I/O systems an external level translator may be required.

Resource

Module Pinout

Software

Developement using Arduino

To set up the hardware, Insert your SD card and easily plug this module into:

• Module1 or Module2 slot of your ProMake® Arduino Nano Kit

or

• Module1 or Module2 slot of your ProMake® Arduino Uno Shield

or

• Use your breadboard to connect the Power, I2C and SPI lines.

now use the following code to write on SD Card:

#include <SPI.h>
#include <SD.h>
File myFile;
void setup() {
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial); // wait for serial port to connect. Needed for native USB port only
  Serial.print("Initializing SD card...");
  if (!SD.begin(10)) {
    Serial.println("initialization failed!");
    while (1);
  }
  Serial.println("initialization done.");
  // open the file. note that only one file can be open at a time,
  // so you have to close this one before opening another.
  myFile = SD.open("test.txt", FILE_WRITE);
  // if the file opened okay, write to it:
  if (myFile) {
    Serial.print("Writing to test.txt...");
    myFile.println("This is a test file :)");
    myFile.println("testing 1, 2, 3.");
    for (int i = 0; i < 20; i++) {
      myFile.println(i);
    }
    // close the file:
    myFile.close();
    Serial.println("done.");
  } else {
    // if the file didn't open, print an error:
    Serial.println("error opening test.txt");
  }
}
void loop() {
// nothing happens after setup
}

Developement using Raspberry

For developing SPI storage micro SD card on PICO KIT with MicroPython, you can use this sample code. Please pay attention to the proper slot number and SPI port. This code is written for slot one andd simply it can change to another SPI port.

# This code run on ProMake PI PICO Kit HW REV 1.2 and Upper

import sdcard  
import machine  
import uos  
sd_spi = machine.SPI(0, sck = machine.Pin(6, machine.Pin.OUT), mosi = machine.Pin(7, machine.Pin.OUT), miso = machine.Pin(4, machine.Pin.IN))  
sd = sdcard.SDCard(sd_spi, machine.Pin(5))  

uos.mount(sd, "/sd")  

print("Size: {} MB".format(sd.sectors/2048)) # to display card's capacity in MB  
print(uos.listdir("/sd"))  
print("\n=======================\n")  
print("Basic SDcard Test \n")  

with open("/sd/test2.txt", "w") as f: # Write - new file  
    f.write("First Message\r\n")  

with open("/sd/test2.txt", "a") as f: # Append  
    f.write("Easy IOT Kits\r\n")  

with open("/sd/test2.txt", "a  ") as f:  
    f.write("First test SD Card!\r\n")  

with open("/sd/test2.txt", "a  ") as f:  
    for i in range(10):  
        f.write(str(i) + ", " + str(i*i*i) + ", " + str(i*i*i*i) + "\r\n")  


with open("/sd/test2.txt", "a  ") as f:  
    f.write("Looping all done!\r\n")  

with open("/sd/test2.txt", "r") as f:  
    print("Printing lines in file: Method #1\n")  
    line = f.readline()  
    while line != '':   # NOT EOF  
        print(line)  
        line = f.readline()  


with open("/sd/test2.txt", "r") as f:  
    lines = f.readlines()  
    print("Printing lines in file: Method #2")  
    for line in lines:  
        print(line)  

uos.umount("/sd")