diff --git a/02-misc/.gitkeep b/02-misc/.gitkeep new file mode 100644 index 000000000..e69de29bb diff --git a/03-platform/.gitkeep b/03-platform/.gitkeep new file mode 100644 index 000000000..e69de29bb diff --git a/02-I2C/Makefile b/04-I2C/Makefile similarity index 100% rename from 02-I2C/Makefile rename to 04-I2C/Makefile diff --git a/02-I2C/ReadMe.md b/04-I2C/ReadMe.md similarity index 100% rename from 02-I2C/ReadMe.md rename to 04-I2C/ReadMe.md diff --git a/02-I2C/i2c_static.c b/04-I2C/i2c_static.c similarity index 100% rename from 02-I2C/i2c_static.c rename to 04-I2C/i2c_static.c diff --git a/05-SPI/.gitkeep b/05-SPI/.gitkeep new file mode 100644 index 000000000..e69de29bb