Imported msp430-libc-20100207

[msp430-libc.git] / include / msp430 / crc16.h

diff --git a/include/msp430/crc16.h b/include/msp430/crc16.h
new file mode 100644 (file)
index 0000000..2c922c6
--- /dev/null
+++ b/include/msp430/crc16.h
@@ -0,0 +1,40 @@
+#ifndef __MSP430_HEADERS_CRC16_H
+#define __MSP430_HEADERS_CRC16_H
+
+/* crc16.h
+ *
+ * mspgcc project: MSP430 device headers
+ * hardware CRC module
+ *
+ * (c) 2009 by J.M.Gross <mspgcc@grossibaer.de>
+ * Originally based on MSP430x5xx Family User's Guide (slau208b).
+ *
+ * $Id: crc16.h,v 1.0 2009/10/08 23:00:38 Exp $
+ */
+
+/* Switches:
+
+__MSP430_CRC16_BASE__ - base address of CRC16 module.
+
+*/
+
+#if defined(__MSP430_CRC16_BASE__)
+#define CRCDI_                   __MSP430_CRC16_BASE__ + 0x00                   /* CRC Data in (word) */
+sfrw(CRCDI, CRCDI_);
+sfrb(CRCDI_L, CRCDI_);
+sfrb(CRCDI_H, CRCDI_+1);
+#define CRCDIRB_                 __MSP430_CRC16_BASE__ + 0x02                   /* CRC Data in reverse bit(word) */
+sfrw(CRCDIRB, CRCDIRB_);
+sfrb(CRCDIRB_L, CRCDIRB_);
+sfrb(CRCDIRB_H, CRCDIRB_+1);
+#define CRCINIRES_               __MSP430_CRC16_BASE__ + 0x04                   /* CRC initialisation and result */
+sfrw(CRCINIRES, CRCINIRES_);
+sfrb(CRCINIRES_L, CRCINIRES_);
+sfrb(CRCINIRES_H, CRCINIRES_+1);
+#define CRCRESR_                 __MSP430_CRC16_BASE__ + 0x06                   /* CRC result reverse */
+sfrw(CRCRESR, CRCRESR_);
+sfrb(CRCRESR_L, CRCRESR_);
+sfrb(CRCRESR_H, CRCRESR_+1);
+#endif
+
+#endif  /* __MSP430_HEADERS_CRC16_H */