static volatile spi_format_t g_spi_format;
static volatile spi_mode_t g_spi_mode;
static volatile spi_clk_rate_t g_spi_clk_rate;
static volatile spi_format_t g_spi_format;
static volatile spi_mode_t g_spi_mode;
static volatile spi_clk_rate_t g_spi_clk_rate;