kfile_putc(MCP41_WRITE_DATA, ch);
kfile_putc(((MCP41_HW_MAX * (uint32_t)res) + (MCP41_MAX / 2)) / MCP41_MAX, ch);
kfile_flush(ch);
kfile_putc(MCP41_WRITE_DATA, ch);
kfile_putc(((MCP41_HW_MAX * (uint32_t)res) + (MCP41_MAX / 2)) / MCP41_MAX, ch);
kfile_flush(ch);