Changes so this checkout exactly matches CVS at -r release_tinyos_2_0_2_2.

[tinyos-2.x.git] / tos / lib / TOSBoot / msp430 / HPLUSART0M.nc

diff --git a/tos/lib/TOSBoot/msp430/HPLUSART0M.nc b/tos/lib/TOSBoot/msp430/HPLUSART0M.nc
new file mode 100644 (file)
index 0000000..e53c9eb
--- /dev/null
+++ b/tos/lib/TOSBoot/msp430/HPLUSART0M.nc
@@ -0,0 +1,128 @@
+// $Id$
+
+/*                                                                     tab:2
+ *
+ *
+ * "Copyright (c) 2000-2005 The Regents of the University  of California.  
+ * 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 UNIVERSITY OF CALIFORNIA 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 UNIVERSITY OF
+ * CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * 
+ * THE UNIVERSITY OF CALIFORNIA 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 UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS."
+ *
+ */
+
+/**
+ * @author Jonathan Hui <jwhui@cs.berkeley.edu>
+ */
+
+module HPLUSART0M {
+  provides interface HPLUSARTControl;
+}
+implementation {
+
+  command void HPLUSARTControl.disableSPI() {
+    // USART0 SPI module disable
+    //ME1 &= ~USPIE0;
+
+    // set to PUC values
+    ME1 = 0;
+    U0CTL = 1;
+    U0TCTL = 1;
+    U0RCTL = 0;
+  }
+  
+  command void HPLUSARTControl.setModeSPI() {
+
+    //U0CTL = SWRST;
+
+    // 8-bit char, SPI-mode, USART as master
+    U0CTL = SWRST | CHAR | SYNC | MM;
+
+    // 3-pin + half-cycle delayed UCLK
+    U0TCTL |= STC + CKPH + SSEL_SMCLK; 
+
+    // as fast as possible
+    U0BR0 = 0x02;
+    U0BR1 = 0;
+
+    // enable SPI
+    ME1 |= USPIE0;
+
+    U0CTL &= ~SWRST;  
+    
+    // clear interrupts
+    IFG1 = 0;
+
+  }
+
+  command void HPLUSARTControl.disableI2C() {
+    /*
+    U0CTL = 1;
+    U0TCTL = 1;
+    I2CTCTL = 0;
+    */
+    U0CTL &= ~I2CEN;
+    U0CTL &= ~I2C;
+    I2CTCTL = 0;
+    call HPLUSARTControl.disableSPI();
+  }
+
+  command void HPLUSARTControl.setModeI2C() {
+   
+    // Recommended init procedure
+    U0CTL = I2C + SYNC + MST;
+
+    // use 1MHz SMCLK as the I2C reference
+    I2CTCTL |= I2CSSEL_2 | I2CTRX;
+
+    // Enable I2C
+    U0CTL |= I2CEN;
+
+    return;
+  }
+
+  command error_t HPLUSARTControl.isTxEmpty(){
+    if (U0TCTL & TXEPT) {
+      return SUCCESS;
+    }
+    return FAIL;
+  }
+  
+  command error_t HPLUSARTControl.isTxIntrPending(){
+    if (IFG1 & UTXIFG0){
+      IFG1 &= ~UTXIFG0;
+      return SUCCESS;
+    }
+    return FAIL;
+  }
+
+  command error_t HPLUSARTControl.isRxIntrPending(){
+    if (IFG1 & URXIFG0){
+      IFG1 &= ~URXIFG0;
+      return SUCCESS;
+    }
+    return FAIL;
+  }
+
+  command void HPLUSARTControl.tx(uint8_t data){
+    U0TXBUF = data;
+  }
+  
+  command uint8_t HPLUSARTControl.rx(){
+    return U0RXBUF;
+  }
+
+}