The sysmocom sysmoOCTSIM is a USB CCID device with eight smart card slots.
This is the open source firmware for this device.

Hardware
========

The sysmocom sysmoOCTSIM hardware is proprietary.

It has the following specifications:

- 8 smart cards slots for 2FF cards (e.g. normal SIM format)
- each slot is driven individually (e.g. they are not multiplexed)
- each card can be operated in class A (5.0 V), B (3.0 V), or C (1.8 V)
- the ISO/IEC 7816-4 T=0 communication protocol is used
- each card can be clock up to 20 MHz (e.g. maximum allowed by the standard)

For more detailed specification refer to the USB description of the device.

Firmware
========

Compiling
---------

GNU make and the arm-none-eabi-gcc compiler are required to build the firmware.

Also, you will need a libosmocore built for arm-none-eabi installed to /usr/local/arm-none-eabi

You can use the following commands (in the libosmocore directory) to build

```
./configure  --prefix=/usr/local/arm-none-eabi --enable-static --host=arm-none-eabi --enable-embedded --disable-log-macros --disable-doxygen --disable-shared --disable-pseudotalloc --disable-libsctp --disable-libusb --disable-gb --enable-external-tests CFLAGS="-Os -ffunction-sections -fdata-sections -nostartfiles -nodefaultlibs -Werror -Wno-error=deprecated -Wno-error=deprecated-declarations -Wno-error=cpp -mthumb -Os -mlong-calls -g3 -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16 -I /my/path/to/osmo-ccid-firmware/sysmoOCTSIM -Wno-error=format"  CPPFLAGS="-D__thread=''"
make install
```

To subsequently compile the firmware, run the following commands (in osmo-ccid-firmware):

```
cd sysmoOCTSIM/gcc
make
```

The `sysmoOCTSIM/gcc/AtmelStart.bin` file is the resulting firmware for the device.

Flashing
--------

The device comes pre-flash with a USB DFU bootloader (e.g. [osmo-asf4-dfu](https://git.osmocom.org/osmo-asf4-dfu/)).
To start the USB DFU bootloader, press on the button on the front right of the panel while powering up the device.

Use the [dfu-util](http://dfu-util.sourceforge.net/) utility to flash the firmware onto the device:

```
dfu-util --device 1d50:6141 --download sysmoOCTSIM/gcc/AtmelStart.bin
```