A library with drivers for different peripherals on the LPC4088 QuickStart Board or related add-on boards.
Dependents: LPC4088test LPC4088test_ledonly LPC4088test_deleteall LPC4088_RAMtest ... more
TSC2046.h@4:b32cf4ef45c5, 2013-10-18 (annotated)
- Committer:
- embeddedartists
- Date:
- Fri Oct 18 12:48:58 2013 +0200
- Revision:
- 4:b32cf4ef45c5
- Parent:
- 0:0fdadbc3d852
- Child:
- 5:3290d7b766d5
Added AR1021 touch controller
Added MMA7455 accelerometer
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
embeddedartists | 0:0fdadbc3d852 | 1 | |
embeddedartists | 0:0fdadbc3d852 | 2 | #ifndef TSC2046_H |
embeddedartists | 0:0fdadbc3d852 | 3 | #define TSC2046_H |
embeddedartists | 0:0fdadbc3d852 | 4 | |
embeddedartists | 4:b32cf4ef45c5 | 5 | #include "TouchPanel.h" |
embeddedartists | 4:b32cf4ef45c5 | 6 | |
embeddedartists | 4:b32cf4ef45c5 | 7 | #define TSC2046_NUM_CALIB_POINTS (3) |
embeddedartists | 0:0fdadbc3d852 | 8 | |
embeddedartists | 0:0fdadbc3d852 | 9 | /** |
embeddedartists | 0:0fdadbc3d852 | 10 | * Texas Instruments Touch Screen Controller (TSC2046). |
embeddedartists | 0:0fdadbc3d852 | 11 | */ |
embeddedartists | 4:b32cf4ef45c5 | 12 | class TSC2046 : public TouchPanel { |
embeddedartists | 0:0fdadbc3d852 | 13 | public: |
embeddedartists | 0:0fdadbc3d852 | 14 | |
embeddedartists | 0:0fdadbc3d852 | 15 | |
embeddedartists | 0:0fdadbc3d852 | 16 | /** |
embeddedartists | 0:0fdadbc3d852 | 17 | * Constructor |
embeddedartists | 0:0fdadbc3d852 | 18 | * |
embeddedartists | 0:0fdadbc3d852 | 19 | * @param mosi SPI MOSI pin |
embeddedartists | 0:0fdadbc3d852 | 20 | * @param miso SPI MISO pin |
embeddedartists | 0:0fdadbc3d852 | 21 | * @param sck SPI SCK pin |
embeddedartists | 0:0fdadbc3d852 | 22 | * @param cs chip-select pin |
embeddedartists | 0:0fdadbc3d852 | 23 | */ |
embeddedartists | 0:0fdadbc3d852 | 24 | TSC2046(PinName mosi, PinName miso, PinName sck, PinName cs); |
embeddedartists | 0:0fdadbc3d852 | 25 | |
embeddedartists | 4:b32cf4ef45c5 | 26 | bool init(uint16_t width, uint16_t height); |
embeddedartists | 4:b32cf4ef45c5 | 27 | |
embeddedartists | 4:b32cf4ef45c5 | 28 | bool read(touchCoordinate_t &coord); |
embeddedartists | 4:b32cf4ef45c5 | 29 | bool calibrateStart(); |
embeddedartists | 4:b32cf4ef45c5 | 30 | bool getNextCalibratePoint(uint16_t* x, uint16_t* y); |
embeddedartists | 4:b32cf4ef45c5 | 31 | bool waitForCalibratePoint(bool* morePoints, uint32_t timeout); |
embeddedartists | 0:0fdadbc3d852 | 32 | |
embeddedartists | 0:0fdadbc3d852 | 33 | /** |
embeddedartists | 4:b32cf4ef45c5 | 34 | * Calibrate the touch panel with already gathered calibration values. |
embeddedartists | 4:b32cf4ef45c5 | 35 | * The list with calibration points must at one point have been retrieved |
embeddedartists | 4:b32cf4ef45c5 | 36 | * by calling getCalibrationValues; |
embeddedartists | 4:b32cf4ef45c5 | 37 | * |
embeddedartists | 4:b32cf4ef45c5 | 38 | * @param values list with calibration values |
embeddedartists | 4:b32cf4ef45c5 | 39 | * @param numValues the size of the list must match the number of |
embeddedartists | 4:b32cf4ef45c5 | 40 | * calibration points needed for this touch panel (TSC2046_NUM_CALIB_POINTS) |
embeddedartists | 4:b32cf4ef45c5 | 41 | * |
embeddedartists | 4:b32cf4ef45c5 | 42 | * @return true if the request was successful; otherwise false |
embeddedartists | 0:0fdadbc3d852 | 43 | */ |
embeddedartists | 4:b32cf4ef45c5 | 44 | bool calibrate(touchCoordinate_t* values, int numValues); |
embeddedartists | 0:0fdadbc3d852 | 45 | |
embeddedartists | 0:0fdadbc3d852 | 46 | /** |
embeddedartists | 4:b32cf4ef45c5 | 47 | * Get calibration values for the calibration points used by this touch |
embeddedartists | 4:b32cf4ef45c5 | 48 | * panel. This method may only be called after a successful calibration |
embeddedartists | 4:b32cf4ef45c5 | 49 | * has been performed. |
embeddedartists | 4:b32cf4ef45c5 | 50 | * |
embeddedartists | 4:b32cf4ef45c5 | 51 | * The list with values can be written to persistent storage and used |
embeddedartists | 4:b32cf4ef45c5 | 52 | * to calibrate the display without involving the user. |
embeddedartists | 4:b32cf4ef45c5 | 53 | * |
embeddedartists | 4:b32cf4ef45c5 | 54 | * @param values calibration values will be written to this list |
embeddedartists | 4:b32cf4ef45c5 | 55 | * @param numValues the size of the list must match the number of |
embeddedartists | 4:b32cf4ef45c5 | 56 | * calibration points needed for this touch panel (TSC2046_NUM_CALIB_POINTS) |
embeddedartists | 4:b32cf4ef45c5 | 57 | * |
embeddedartists | 4:b32cf4ef45c5 | 58 | * @return true if the request was successful; otherwise false |
embeddedartists | 0:0fdadbc3d852 | 59 | */ |
embeddedartists | 4:b32cf4ef45c5 | 60 | bool getCalibrationValues(touchCoordinate_t* values, int numValues); |
embeddedartists | 0:0fdadbc3d852 | 61 | |
embeddedartists | 0:0fdadbc3d852 | 62 | |
embeddedartists | 0:0fdadbc3d852 | 63 | private: |
embeddedartists | 0:0fdadbc3d852 | 64 | |
embeddedartists | 0:0fdadbc3d852 | 65 | typedef struct { |
embeddedartists | 0:0fdadbc3d852 | 66 | int64_t x; |
embeddedartists | 0:0fdadbc3d852 | 67 | int64_t y; |
embeddedartists | 0:0fdadbc3d852 | 68 | } calibPoint_t; |
embeddedartists | 0:0fdadbc3d852 | 69 | |
embeddedartists | 0:0fdadbc3d852 | 70 | typedef struct { |
embeddedartists | 0:0fdadbc3d852 | 71 | int64_t An; |
embeddedartists | 0:0fdadbc3d852 | 72 | int64_t Bn; |
embeddedartists | 0:0fdadbc3d852 | 73 | int64_t Cn; |
embeddedartists | 0:0fdadbc3d852 | 74 | int64_t Dn; |
embeddedartists | 0:0fdadbc3d852 | 75 | int64_t En; |
embeddedartists | 0:0fdadbc3d852 | 76 | int64_t Fn; |
embeddedartists | 0:0fdadbc3d852 | 77 | int64_t Divider; |
embeddedartists | 0:0fdadbc3d852 | 78 | } calibMatrix_t; |
embeddedartists | 0:0fdadbc3d852 | 79 | |
embeddedartists | 0:0fdadbc3d852 | 80 | SPI _spi; |
embeddedartists | 0:0fdadbc3d852 | 81 | DigitalOut _cs; |
embeddedartists | 0:0fdadbc3d852 | 82 | bool _calibrated; |
embeddedartists | 0:0fdadbc3d852 | 83 | bool _initialized; |
embeddedartists | 0:0fdadbc3d852 | 84 | calibMatrix_t _calibMatrix; |
embeddedartists | 0:0fdadbc3d852 | 85 | |
embeddedartists | 4:b32cf4ef45c5 | 86 | uint16_t _width; |
embeddedartists | 4:b32cf4ef45c5 | 87 | uint16_t _height; |
embeddedartists | 4:b32cf4ef45c5 | 88 | int _calibPoint; |
embeddedartists | 4:b32cf4ef45c5 | 89 | int _insetPx; |
embeddedartists | 4:b32cf4ef45c5 | 90 | |
embeddedartists | 4:b32cf4ef45c5 | 91 | touchCoordinate_t _calibrateValues[TSC2046_NUM_CALIB_POINTS][2]; |
embeddedartists | 4:b32cf4ef45c5 | 92 | |
embeddedartists | 0:0fdadbc3d852 | 93 | void readAndFilter(touchCoordinate_t &coord); |
embeddedartists | 0:0fdadbc3d852 | 94 | int32_t getFilteredValue(int cmd); |
embeddedartists | 0:0fdadbc3d852 | 95 | uint16_t spiTransfer(uint8_t cmd); |
embeddedartists | 0:0fdadbc3d852 | 96 | |
embeddedartists | 4:b32cf4ef45c5 | 97 | void calibrate(touchCoordinate_t &ref1, |
embeddedartists | 4:b32cf4ef45c5 | 98 | touchCoordinate_t &ref2, |
embeddedartists | 4:b32cf4ef45c5 | 99 | touchCoordinate_t &ref3, |
embeddedartists | 4:b32cf4ef45c5 | 100 | touchCoordinate_t &scr1, |
embeddedartists | 4:b32cf4ef45c5 | 101 | touchCoordinate_t &scr2, |
embeddedartists | 4:b32cf4ef45c5 | 102 | touchCoordinate_t &scr3); |
embeddedartists | 4:b32cf4ef45c5 | 103 | |
embeddedartists | 4:b32cf4ef45c5 | 104 | void getCalibratePoint(int pointNum, int32_t* x, int32_t *y); |
embeddedartists | 4:b32cf4ef45c5 | 105 | int waitForTouch(int32_t* x, int32_t* y, uint32_t timeout); |
embeddedartists | 4:b32cf4ef45c5 | 106 | |
embeddedartists | 0:0fdadbc3d852 | 107 | |
embeddedartists | 0:0fdadbc3d852 | 108 | |
embeddedartists | 0:0fdadbc3d852 | 109 | int setCalibrationMatrix( calibPoint_t * displayPtr, |
embeddedartists | 0:0fdadbc3d852 | 110 | calibPoint_t * screenPtr, |
embeddedartists | 0:0fdadbc3d852 | 111 | calibMatrix_t * matrixPtr); |
embeddedartists | 0:0fdadbc3d852 | 112 | int getDisplayPoint( calibPoint_t * displayPtr, |
embeddedartists | 0:0fdadbc3d852 | 113 | calibPoint_t * screenPtr, |
embeddedartists | 0:0fdadbc3d852 | 114 | calibMatrix_t * matrixPtr ); |
embeddedartists | 0:0fdadbc3d852 | 115 | |
embeddedartists | 4:b32cf4ef45c5 | 116 | |
embeddedartists | 4:b32cf4ef45c5 | 117 | |
embeddedartists | 0:0fdadbc3d852 | 118 | }; |
embeddedartists | 0:0fdadbc3d852 | 119 | |
embeddedartists | 0:0fdadbc3d852 | 120 | #endif |