+#define SPI_SR_TXCTR (uint32_t)0x0000F000 // Transmit FIFO Counter
+#define SPI_SR_TXNXTPTR (uint32_t)0x00000F00 // Transmit Next, Pointer
+#define SPI_SR_RXCTR (uint32_t)0x000000F0 // Receive FIFO Counter
+#define SPI_SR_POPNXTPTR (uint32_t)0x0000000F // Pop Next, Pointer