+#define STM_SPI_CR2_LDMA_TX 14
+#define STM_SPI_CR2_LDMA_RX 13
+#define STM_SPI_CR2_FRXTH 12
+#define STM_SPI_CR2_DS 8
+#define STM_SPI_CR2_DS_4 0x3
+#define STM_SPI_CR2_DS_5 0x4
+#define STM_SPI_CR2_DS_6 0x5
+#define STM_SPI_CR2_DS_7 0x6
+#define STM_SPI_CR2_DS_8 0x7
+#define STM_SPI_CR2_DS_9 0x8
+#define STM_SPI_CR2_DS_10 0x9
+#define STM_SPI_CR2_DS_11 0xa
+#define STM_SPI_CR2_DS_12 0xb
+#define STM_SPI_CR2_DS_13 0xc
+#define STM_SPI_CR2_DS_14 0xd
+#define STM_SPI_CR2_DS_15 0xe
+#define STM_SPI_CR2_DS_16 0xf