Uses Timer 0 of the 11U24 to capture input pulsesl

Revision:
0:22c6b94e7da6
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/capturet0_11u24.h	Thu Mar 13 17:52:43 2014 +0000
@@ -0,0 +1,133 @@
+ /* mbed Library - CaptureT0_11U24
+ * Copyright (c) 2014
+ * released under MIT license http://mbed.org/licence/mit
+ */
+ 
+/***********************************************************************//**
+ * @file        capturet1_11u24.h
+ * @brief       Header file for the CaptureT0_11U24 library. 
+ * @version     0.0
+ * @date        5 Feb 2014
+ * @author      
+ **************************************************************************/
+/***************************************************************************
+ * Revision     Date        Comments
+ *----------    --------    -----------------------------------------------
+ *
+ *  0.0         2/5/14    Initial creation
+ ***************************************************************************/
+
+#ifndef CAPTURET0_H
+#define CAPTURET0_H
+
+/* Includes ------------------------------------------------------------------- */
+#include "mbed.h"
+
+
+/* Public Types --------------------------------------------------------------- */
+
+
+/* Public Functions ----------------------------------------------------------- */
+/** @defgroup Capture_Public_Functions Capture Public Functions
+*/
+class Capture {
+public:
+
+/** Create a Capture object and configure it
+ *
+ * @param none
+ */
+Capture(void);
+
+/** Start capturing data. Accumulate the specified number of samples. 
+ * @param numsamples    The number of samples to be accumulated
+ * @return        None
+ */
+void Start(int numsamples);
+
+/** Check to see if a new count is ready. 
+ * 
+ * @return       (int) Status value. Negative means overrun.
+ */
+int Ready(void);
+
+/** Read (accumlated) sample count. 
+ * 
+ * @return       (unsigned int) Accumulated capture value
+ */
+unsigned int Read(void);
+
+
+
+/* Public Macros -------------------------------------------------------------- */
+
+
+
+
+private:
+static void _Captureisr(void);
+void Captureisr(void);  
+static Capture *instance;
+int flag;
+int channel;
+//int capturecount;
+unsigned int capturedata;
+int Nsamples;
+//int Nsamplebits;
+//int *flagaddresspointer;
+
+
+
+/* Private Macros ------------------------------------------------------------- */
+/* --------------------- BIT DEFINITIONS -------------------------------------- */
+/* Timer Capture Register Definitions --------------------- */
+
+/*********************************************************************//**
+ * Macro defines for CT32B0->IR Interrupt tegister
+ **********************************************************************/
+#define IR_CR1INT                   ((uint32_t)(1<<6))        /**< Interrupt flag for capture channel 1 */
+
+/*********************************************************************//**
+ * Macro defines for IOCON->PIO1_29 register bits LPC11U24
+ **********************************************************************/
+#define PIN_PULL_UP                     2UL
+#define PIN_REPEATER                    3UL
+#define PIN_NORESISTOR                  0UL
+#define PIN_PULL_DOWN                   1UL 
+
+/* FUNC bits */
+#define CT32B0_CAP1                     2UL
+
+/* MODE bits */
+#define CAP_PULLUP                 ((uint32_t)(PIN_PULL_UP<<3))          // Pull up on the CT32B0_CAP1 input pin
+
+/*********************************************************************//**
+ * Macro defines for SYSCON->SYSAHBCLKDIV register  bits LPC11U24
+ **********************************************************************/
+#define CT32B0_CLK_ENABLE          ((uint32_t)(1<<9))        /**< CT32B0 clock enable */ 
+
+/*********************************************************************//**
+ * Macro defines for CT32B0->TCR register  bits LPC11U24
+ **********************************************************************/
+#define TCR_CEN                         1UL
+
+
+/*********************************************************************//**
+ * Macro defines for CT32B0->CCR register  bits LPC11U24
+ **********************************************************************/
+#define CCR_CAP1RE                     ((uint32_t)(1<<6)) 
+#define CCR_CAP1FE                     ((uint32_t)(1<<7))
+#define CCR_CAP1I                      ((uint32_t)(1<<8))  
+
+/*********************************************************************//**
+ * Macro defines for CT32B0->CTCR register  bits LPC11U24
+ **********************************************************************/
+#define CTCR_CTM_TIMER                  0UL
+#define CTCR_ENCC                       ((uint32_t)(1<<4))
+#define CTCR_SEICC_CAP1RE               ((uint32_t)(4<<5))
+
+
+
+}; // End of Capture class information
+#endif /* CAPTURE_H */
+/* --------------------------------- End Of File ------------------------------ */