Hacking libctru librarys to read from 3ds card

[pi-guy3]

hi i'd like to make a program to read/write to a ntr or ctr type ds cartage i dont know how to do this. i would like to write data directly to the cards pins so all of the following
1 GND Ground
2 CLK Clock. Frequencies 6.7MHz and 4.2MHz for DS/DSi gamecards, up to 16.6MHz for 3DS gamecards (for both SPI and ROM transfers).
3 NC Not connected. Possibly used to program cards.
4 RCS ROM select, active low. Pulled low to start a ROM transfer.
5 RST Reset, active low.
6 ECS Savegame chip select, active low. Pulled low to start a savegame SPI transfer.
7 IRQ Removal detection.
8 VCC Powersupply 3.3V.
9 DAT0 Bidirectional data bus.
10 DAT1 Bidirectional data bus.
11 DAT2 Bidirectional data bus.
12 DAT3 Bidirectional data bus.
13 DAT4 Bidirectional data bus / pin NC/SIO3 on savegame chip.
14 DAT5 Bidirectional data bus / pin WP#/SIO2 on savegame chip.
15 DAT6 Bidirectional data bus / pin SO/SIO1 on savegame chip.
16 DAT7 Bidirectional data bus / pin SI/SIO0 on savegame chip.
17 GND Ground
and i wold like to know the library that let me do that and library that possibly let me write to addresses and read from addresses

 

[Technicmaster0]

I think that you would have to write a .firm file for that because the sevices in 3DS mode don't allow you to access the pins directly.