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