Uses Timer 0 of the 11U24 to capture input pulsesl
capturet0_11u24.h
- Committer:
- hexley
- Date:
- 2014-03-13
- Revision:
- 0:22c6b94e7da6
File content as of revision 0:22c6b94e7da6:
/* 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 ------------------------------ */