platform support for the IRIS mote (atm1218 MCU and rf230 radio)

[tinyos-2.x.git] / tos / platforms / iris / chips / rf230 / HplRF230P.nc

diff --git a/tos/platforms/iris/chips/rf230/HplRF230P.nc b/tos/platforms/iris/chips/rf230/HplRF230P.nc
new file mode 100644 (file)
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+++ b/tos/platforms/iris/chips/rf230/HplRF230P.nc
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+/*
+ * Copyright (c) 2007, Vanderbilt University
+ * All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose, without fee, and without written agreement is
+ * hereby granted, provided that the above copyright notice, the following
+ * two paragraphs and the author appear in all copies of this software.
+ * 
+ * IN NO EVENT SHALL THE VANDERBILT UNIVERSITY BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
+ * OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE VANDERBILT
+ * UNIVERSITY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * THE VANDERBILT UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
+ * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE VANDERBILT UNIVERSITY HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Author: Miklos Maroti
+ */
+
+#include <util/crc16.h>
+#include "Atm128Spi.h"
+
+module HplRF230P
+{
+       provides
+       {
+               interface GpioCapture as IRQ;
+               interface Init as PlatformInit;
+
+               interface HplRF230;
+       }
+
+       uses
+       {
+               interface HplAtm128Capture<uint16_t> as Capture;
+               interface GeneralIO as PortCLKM;
+               interface GeneralIO as PortIRQ;
+       }
+}
+
+implementation
+{
+       command error_t PlatformInit.init()
+       {
+               call PortCLKM.makeInput();
+               call PortCLKM.clr();
+               call PortIRQ.makeInput();
+               call PortIRQ.clr();
+               call Capture.stop();
+
+               return SUCCESS;
+       }
+
+       async event void Capture.captured(uint16_t time)
+       {
+               time = call Capture.get();      // TODO: ask Cory why time is not the captured time
+               signal IRQ.captured(time);
+       }
+
+       default async event void IRQ.captured(uint16_t time)
+       {
+       }
+
+       async command error_t IRQ.captureRisingEdge()
+       {
+               call Capture.setEdge(TRUE);
+               call Capture.reset();
+               call Capture.start();
+       
+               return SUCCESS;
+       }
+
+       async command error_t IRQ.captureFallingEdge()
+       {
+               // falling edge comes when the IRQ_STATUS register of the RF230 is read
+               return FAIL;    
+       }
+
+       async command void IRQ.disable()
+       {
+               call Capture.stop();
+       }
+
+       // TODO: Check why the default crcByte implementation is in a different endianness
+       inline async command uint16_t HplRF230.crcByte(uint16_t crc, uint8_t data)
+       {
+               return _crc_ccitt_update(crc, data);
+       }
+
+       inline async command void HplRF230.spiSplitWrite(uint8_t data)
+       {
+               // the SPI must have been started, so do not waste time here
+               // SET_BIT(SPCR, SPE);
+
+               SPDR = data;
+       }
+
+       inline async command uint8_t HplRF230.spiSplitRead()
+       {
+           while( !( SPSR & 0x80 ) )
+                       ;
+               return SPDR;
+       }
+
+       inline async command uint8_t HplRF230.spiSplitReadWrite(uint8_t data)
+       {
+               uint8_t b;
+
+           while( !( SPSR & 0x80 ) )
+                       ;
+               b = SPDR;
+               SPDR = data;
+
+               return b;
+       }
+
+       inline async command uint8_t HplRF230.spiWrite(uint8_t data)
+       {
+               // the SPI must have been started, so do not waste time here
+               // SET_BIT(SPCR, SPE);
+
+               SPDR = data;
+           while( !( SPSR & 0x80 ) )
+                       ;
+
+               return SPDR;
+       }
+}