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421 lines
15 KiB
421 lines
15 KiB
#ifndef CAP_TOUCH_STRUCTURE
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#define CAP_TOUCH_STRUCTURE
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//******************************************************************************
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// structure.h
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//
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// Launch Pad MSP430G2452
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// 4 element wheel
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// middle button
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// proximity sensor
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//
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//
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// This file contains both application dependent and independent pieces. The
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// dependent piece must be updated along with structure.c, and carries the
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// naming conventions found in structure.c to the rest of the library.
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//
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//
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//
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//
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// Revision 0.06 Updated with case and format from Stye Guide
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//
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//******************************************************************************
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//******************************************************************************
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//******************************************************************************
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// The following elements need to be configured by the user.
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//******************************************************************************
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//#include "msp430.h"
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#include "msp430g2452.h"
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#include <stdint.h>
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/* Public Globals */
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extern const struct Element volume_down; // structure containing elements for
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extern const struct Element volume_up; //
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extern const struct Element right; //
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extern const struct Element left; //
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extern const struct Element middle_element; //
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extern const struct Element proximity_element; //
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extern const struct Sensor wheel;
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extern const struct Sensor middle_button; // structure of info for a given
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extern const struct Sensor proximity_sensor; // structure of info for a given
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//****** RAM ALLOCATION ********************************************************
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// TOTAL_NUMBER_OF_ELEMENTS defines the total number of elements used, even if
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// they are going to be segmented into seperate groups.
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// If the RAM_FOR_FLASH definition is removed, then the appropriate HEAP size
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// must be allocated. 2 bytes * MAXIMUM_NUMBER_OF_ELEMENTS_PER_SENSOR + 2 bytes
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// of overhead.
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#define TOTAL_NUMBER_OF_ELEMENTS 6
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#define RAM_FOR_FLASH
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//****** Structure Array Definition ********************************************
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// This defines the array size in the sensor strucure. In the event that
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// RAM_FOR_FLASH is defined, then this also defines the amount of RAM space
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// allocated (global variable) for computations.
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#define MAXIMUM_NUMBER_OF_ELEMENTS_PER_SENSOR 4
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//****** Choosing a Measurement Method ****************************************
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// These variables are references to the definitions found in structure.c and
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// must be generated per the application.
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// possible values for the method field
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// OSCILLATOR DEFINITIONS
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//#define RO_COMPAp_TA0_WDTp 64
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#define RO_PINOSC_TA0_WDTp 65
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//#define RO_PINOSC_TA0 66
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//#define RO_COMPAp_TA1_WDTp 67
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//#define RO_COMPB_TA0_WDTA 68
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//#define RO_COMPB_TA1_WDTA 69
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//#define RO_COMPAp_TA0_SW 70
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//#define RO_PINOSC_TA0_SW 71
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// RC DEFINITIONS
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//#define RC_PAIR_TA0 01
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//#define RC_PAIR_TA1 02
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//#define RC_PAIR_TD0 03
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// FAST RO DEFINITIONS
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//#define fRO_PINOSC_TA0_SW 25
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//#define fRO_COMPB_TA0_TA1 26
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//#define fRO_COMPB_TA0_TD0 27
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//****** WHEEL and SLIDER ******************************************************
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// Are wheel or slider representations used?
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//#define SLIDER
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#define ILLEGAL_SLIDER_WHEEL_POSITION 0xFFFF
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#define WHEEL
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//******************************************************************************
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// End of user configuration section.
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//******************************************************************************
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//******************************************************************************
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//******************************************************************************
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//possible timer source clock dividers, different from clock module dividers
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#define TIMER_TxCLK 0x0000 // ID_0, IDX_0
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#define TIMER_ACLK 0x0100
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#define TIMER_SMCLK 0x0200
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#define TIMER_INCLK 0x0300
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#define TIMER_SOURCE_DIV_0 0x0000
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#define TIMER_SOURCE_DIV_1 0x0040
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#define TIMER_SOURCE_DIV_2 0x0080
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#define TIMER_SOURCE_DIV_3 0x00C0
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#define GATE_WDT_ACLK 0x0004
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#define GATE_WDT_SMCLK 0x0000
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#define WDTp_GATE_32768 0x0000 // watchdog source/32768
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#define WDTp_GATE_8192 0x0001 // watchdog source/8192
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#define WDTp_GATE_512 0x0002 // watchdog source/512
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#define WDTp_GATE_64 0x0003 // watchdog source/64
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#define WDTA_GATE_2G 0x0000 // watchdog source/2G
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#define WDTA_GATE_128M 0x0001 // watchdog source/128M
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#define WDTA_GATE_8192K 0x0002 // watchdog source/8192K
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#define WDTA_GATE_512K 0x0003 // watchdog source/512K
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#define WDTA_GATE_32768 0x0004 // watchdog source/32768
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#define WDTA_GATE_8192 0x0005 // watchdog source/8192
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#define WDTA_GATE_512 0x0006 // watchdog source/512
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#define WDTA_GATE_64 0x0007 // watchdog source/64
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// The below variables are used to excluded portions of code not needed by
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// the method chosen by the user. Uncomment the type used prior to compilation.
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// Multiple types can be chosen as needed.
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// What Method(s) are used in this application?
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#ifdef RO_COMPAp_TA0_WDTp
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#define RO_TYPE
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#define RO_COMPAp_TYPE
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#define WDT_GATE
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//what devices have Pxsel2 ??
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// msp430f2112, 2122, 2132
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// msp430G2112, G2212, G2312, G2412, G2152, G2252, G2352, G2452
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// SEL2REGISTER
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#ifdef __MSP430F2112
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430F2122
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430F2132
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2112
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2212
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2312
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2412
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2152
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2252
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2352
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#define SEL2REGISTER
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#endif
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#ifdef __MSP430G2452
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#define SEL2REGISTER
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#endif
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#endif
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#ifdef RO_PINOSC_TA0_WDTp
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#define RO_TYPE
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#define RO_PINOSC_TYPE
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#define WDT_GATE
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#endif
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#ifdef RO_PINOSC_TA0
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#define RO_TYPE
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#define RO_PINOSC_TYPE
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#define ACCUMULATE_TYPE
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#endif
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#ifdef RO_COMPAp_TA1_WDTp
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#define RO_TYPE
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#define RO_COMPAp_TYPE
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#define WDT_GATE
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#endif
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#ifdef RO_COMPB_TA0_WDTA
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#define RO_TYPE
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#define RO_COMPB_TYPE
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#define WDT_GATE
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#endif
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#ifdef RO_COMPB_TA1_WDTA
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#define RO_TYPE
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#define RO_COMPB_TYPE
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#define WDT_GATE
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#endif
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#ifdef RO_COMPAp_TA0_SW
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#define RO_TYPE
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#define RO_COMPAp_TYPE
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#endif
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#ifdef RO_PINOSC_TA0_SW
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#define RO_TYPE
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#define RO_PINOSC_TYPE
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#endif
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#ifdef RC_PAIR_TA0
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#define RC_TYPE
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#define RC_PAIR_TYPE
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#define ACCUMULATE_TYPE
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#endif
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#ifdef RC_PAIR_TA1
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#define RC_TYPE
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#define RC_PAIR_TYPE
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#endif
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#ifdef RC_PAIR_TD0
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#define RC_TYPE
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#define RC_PAIR_TYPE
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#endif
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#ifdef fRO_PINOSC_TA0_SW
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#define RO_TYPE
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#define RO_PINOSC_TYPE
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#define ACCUMULATE_TYPE
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#endif
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#ifdef fRO_COMPB_TA0_TA1
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#define RO_TYPE
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#define FAST_SCAN_RO_COMP_TYPE
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#endif
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#ifdef fRO_COMPB_TA0_TD0
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#define RO_TYPE
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#define FAST_SCAN_RO_COMP_TYPE
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#endif
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#ifdef SLIDER
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#define SLIDER_WHEEL
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#endif
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#ifdef WHEEL
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#define SLIDER_WHEEL
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#endif
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#define RO_MASK 0xC0 // 1100 0000
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#define RC_FRO_MASK 0x3F // 0011 1111
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//******************************************************************************
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// The sensor structure identifies port or comparator input definitions for each
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// sensor.
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//******************************************************************************
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struct Element{
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#ifdef RO_PINOSC_TYPE
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// These register address definitions are needed for each sensor only
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// when using the PinOsc method
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volatile uint8_t *inputPxselRegister; // PinOsc: port selection address
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volatile uint8_t *inputPxsel2Register; // PinOsc: port selection 2 address
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#endif
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#ifdef RC_PAIR_TYPE
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// these fields are specific to the RC type.
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uint8_t *inputPxoutRegister; // RC: port output address: PxOUT
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volatile uint8_t *inputPxinRegister; // RC: port input address: PxIN
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uint8_t *inputPxdirRegister; // RC+PinOsc: port direction address
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uint8_t *referencePxoutRegister;// RC: port output address: PxOUT
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uint8_t *referencePxdirRegister;// RC: port direction address: PxDIR
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uint8_t referenceBits; // RC: port bit definition
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#endif
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uint16_t inputBits; // Comp_RO+FastRO+RC+PinOsc: bit
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// definition
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//
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// for comparator input bit
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// location in CACTL2 or CBCTL0
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uint16_t threshold; // specific threshold for each button
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uint16_t maxResponse; // Special Case: Slider max counts
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};
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//******************************************************************************
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// The following structure definitons are application independent and are not
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// intended to be modified.
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//
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// The CT_handler 'groups' the sensor based upon function and capacitive
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// measurement method.
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//******************************************************************************
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struct Sensor{
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// the method acts as the switch to determine which HAL is called
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uint8_t halDefinition; // COMPARATOR_TYPE (RO), RC, etc
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// RO_COMPA, RO_COMPB, RO_PINOSC
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// RC_GPIO, RC_COMPA, RC_COMPB
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// FAST_SCAN_RO
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uint8_t numElements; // number of elements within group
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uint8_t baseOffset; // the offset within the global
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// base_cnt array
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struct Element const *arrayPtr[MAXIMUM_NUMBER_OF_ELEMENTS_PER_SENSOR];
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// an array of pointers
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//******************************************************************************
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// Reference structure definitions for comparator types, for the RC method the
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// reference is defined within the element.
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#ifdef RO_COMPAp_TYPE
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uint8_t * refPxoutRegister; // RO+FastRO: port output address
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uint8_t * refPxdirRegister; // RO+FastRO: port direction address
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uint8_t refBits; // RO+FastRO: port bit definition
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uint8_t * txclkDirRegister; // PxDIR
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uint8_t * txclkSelRegister; // PxSEL
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uint8_t txclkBits; // Bit field for register
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uint8_t *caoutDirRegister; // PxDIR
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uint8_t *caoutSelRegister; // PxSEL
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uint8_t caoutBits; // Bit field for register
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// This is only applicable to the RO_COMPAp_TYPE
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#ifdef SEL2REGISTER
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uint8_t *caoutSel2Register;
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uint8_t *txclkSel2Register;
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#endif
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uint8_t refCactl2Bits; // RO: CACTL2 input definition,
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// CA0 (P2CA0),CA1(P2CA4),
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// CA2(P2CA0+P2CA4)
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uint8_t capdBits;
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#endif
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#ifdef RO_COMPB_TYPE
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uint8_t *cboutTAxDirRegister; // CBOUT_TA0CLK
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uint8_t *cboutTAxSelRegister; // CBOUT_TA0CLK
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uint8_t cboutTAxBits; // Bit field for register
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uint16_t cbpdBits;
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#endif
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//*****************************************************************************
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// Timer definitions
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// The basic premise is to count a number of clock cycles within a time
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// period, where either the clock source or the timer period is a function
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// of the element capacitance.
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//
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// RC Method:
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// Period: accumulationCycles * charge and discharge time of RC
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// circuit where C is captouch element
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//
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// clock source: measGateSource/sourceScale
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// RO Method:
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// Period: accumulationCycles*measGateSource/sourceScale
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// (with WDT sourceScale = 1, accumulationCycles is WDT control
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// register settings)
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//
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// clock source: relaxation oscillator where freq is a function of C
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//
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// fRO Method:
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// Period: accumulationCycles * 1/freq, freq is a function of C
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//
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// clock source: measGateSource/sourceScale
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uint16_t measGateSource; // RC+FastRO: measurement timer source,
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// {ACLK, TACLK, SMCLK}
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// Comp_RO+PinOsc: gate timer source,
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// {ACLK, TACLK, SMCLK}
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uint16_t sourceScale; // Comp_RO+FastRO+PinOsc: gate timer,
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// TA/TB/TD, scale: 1,1/2,1/4,1/8
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// RC+FastRO: measurement timer, TA/TB/TD
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// scale: 16, 8, 4, 2, 1, ½, ¼, 1/8
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uint16_t accumulationCycles;
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//*****************************************************************************
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// Other definitions
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#ifdef SLIDER_WHEEL
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uint8_t points; // Special Case: Number of points
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// along slider or wheel
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uint8_t sensorThreshold;
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#endif
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};
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//******************************************************************************
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// The scheduler structure manages each handler group (CT_Handler object) using
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// one timer resource.
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// TBD
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//******************************************************************************
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struct CT_scheduler{
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void *callBacks;
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// pointer to function in the main application (can be an array of functions
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// if multiple groups). The order is important! The pointer here must point
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// to the first CT_Handler object!
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struct CT_Handler *handler; // order of this and *call_backs
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// must be the same.
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uint8_t Enable; // Each bit in this value will show
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// if the given group element
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// is being sheduled & measured.
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uint8_t delayTimer; // delay timer, {SW,WDT, TimerA,
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// TimerB, TimerD}
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uint8_t delayTimerSrc; // delay timer source,
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// {ACLK, TACLK, SMCLK}
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uint8_t delayTimerScale; // delay time scale (/1,/2,/4,/8)
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uint8_t delayTime; // wdt: delay {32768,8192,512,64}
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// RO+FastRO+PinOsc(TimerA,B,D):
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// delay time {257+x*256}
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};
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#endif
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