FT5206 capacitive Touch Panel driver for 7 inch BuyDisplay LCD, with 5-point touch.
FT5206.h
- Committer:
- JackB
- Date:
- 2015-06-19
- Revision:
- 2:5ebf8736e4b2
- Parent:
- 1:56a53f203daa
File content as of revision 2:5ebf8736e4b2:
/** This is a library to handling capacitive multitouch sensors using FT5206. * FT5206 Capatitive Touch Panel driver for 7 inch BuyDisplay LCD, with 5-point touch * http://www.buydisplay.com/default/7-inch-lcd-module-capacitive-touch-screen-panel-i2c-spi-serial * * Example: * @code * // Use of the capacitive touch panel * #define PIN_SCL_FT5206 D15 * #define PIN_SDA_FT5206 D14 * #define PIN_INT_FT5206 D7 * FT5206 FT5206(PIN_SDA_FT5206, PIN_SCL_FT5206, PIN_INT_FT5206); // sda, scl, int * FT5206.init(); * while(1) { * if(FT5206.getPanelTouched()) { * for (int i = 0; i < FT5206.numberOfTouchPoints; i++) { * printf("Coord %d: %d, %d \r\n", i+1, FT5206.touchCoordinatesX[i], FT5206.touchCoordinatesY[i]); * } * } * } * @endcode * */ #ifndef FT5206_H #define FT5206_H #include "mbed.h" #define DEBUG_OUTPUT_ENABLED false #define FT5206_I2C_FREQUENCY 400000 /* FT5206 definitions */ #define FT5206_I2C_ADDRESS 0x38 #define FT5206_NUMBER_OF_REGISTERS 31 // there are more registers, but this // is enought to get all 5 touch coordinates. #define FT5206_NUMBER_OF_TOTAL_REGISTERS 0xFE #define FT5206_DEVICE_MODE 0x00 #define FT5206_GEST_ID 0x01 #define FT5206_TD_STATUS 0x02 // How many points detected (3:0). 1-5 is valid. #define FT5206_TOUCH1_XH 0x03 // Event Flag, Touch X Position #define FT5206_TOUCH1_XL 0x04 #define FT5206_TOUCH1_YH 0x05 // Touch ID, Touch Y Position #define FT5206_TOUCH1_YL 0x06 #define FT5206_TOUCH2_XH 0x09 // Event Flag, Touch X Position #define FT5206_TOUCH2_XL 0x0a #define FT5206_TOUCH2_YH 0x0b // Touch ID, Touch Y Position #define FT5206_TOUCH2_YL 0x0c #define FT5206_TOUCH3_XH 0x0f // Event Flag, Touch X Position #define FT5206_TOUCH3_XL 0x10 #define FT5206_TOUCH3_YH 0x11 // Touch ID, Touch Y Position #define FT5206_TOUCH3_YL 0x12 #define FT5206_TOUCH4_XH 0x15 // Event Flag, Touch X Position #define FT5206_TOUCH4_XL 0x16 #define FT5206_TOUCH4_YH 0x17 // Touch ID, Touch Y Position #define FT5206_TOUCH4_YL 0x18 #define FT5206_TOUCH5_XH 0x1b // Event Flag, Touch X Position #define FT5206_TOUCH5_XL 0x1c #define FT5206_TOUCH5_YH 0x1d // Touch ID, Touch Y Position #define FT5206_TOUCH5_YL 0x1e #define FT5206_ID_G_THGROUP 0x80 // Valid touching detect threshold #define FT5206_ID_G_THPEAK 0x81 // Valid touching peak detect threshold #define FT5206_ID_G_THCAL 0x82 // The threshold when calculating the focus of touching #define FT5206_ID_G_THWATER 0x83 // The threshold when there is surface water #define FT5206_ID_G_THTEMP 0x84 // The threshold of temperature compensation #define FT5206_ID_G_CTRL 0x86 // Power control mode #define FT5206_ID_G_TIME_ENTER_MONITOR 0x87 // The timer of entering monitor status #define FT5206_ID_G_PERIODACTIVE 0x88 // Period Active #define FT5206_ID_G_PERIODMONITOR 0x89 // The timer of entering idle while in monitor status #define FT5206_ID_G_AUTO_CLB_MODE 0xA0 // Auto calibration mode #define FT5206_TOUCH_LIB_VERSION_H 0xA1 // Firmware Library Version H byte #define FT5206_TOUCH_LIB_VERSION_L 0xA2 // Firmware Library Version L byte #define FT5206_ID_G_CIPHER 0xA3 // Chip vendor ID #define FT5206_G_MODE 0xA4 // The interrupt status to host #define FT5206_ID_G_PMODE 0xA5 // Power Consume Mode #define FT5206_FIRMID 0xA6 // Firmware ID #define FT5206_ID_G_STATE 0xA7 // Running State #define FT5206_ID_G_FT5201ID 0xA8 // CTPM Vendor ID #define FT5206_ID_G_ERR 0xA9 // Error Code #define FT5206_ID_G_CLB 0xAA // Configure TP module during calibration in Test Mode #define FT5206_ID_G_B_AREA_TH 0xAE // The threshold of big area #define FT5206_LOG_MSG_CNT 0xFE // The log MSG count #define FT5206_LOG_CUR_CHA 0xFF // Current character of log message, will point to the next // character when one character is read. #define FT5206_GEST_ID_MOVE_UP 0x10 #define FT5206_GEST_ID_MOVE_LEFT 0x14 #define FT5206_GEST_ID_MOVE_DOWN 0x18 #define FT5206_GEST_ID_MOVE_RIGHT 0x1c #define FT5206_GEST_ID_ZOOM_IN 0x48 #define FT5206_GEST_ID_ZOOM_OUT 0x49 #define FT5206_GEST_ID_NO_GESTURE 0x00 #define FT5206_EVENT_FLAG_PUT_DOWN 0x00 #define FT5206_EVENT_FLAG_PUT_UP 0x01 #define FT5206_EVENT_FLAG_CONTACT 0x02 #define FT5206_EVENT_FLAG_RESERVED 0x03 #define FT5206_ID_G_POLLING_MODE 0x00 #define FT5206_ID_G_TRIGGER_MODE 0x01 #define FT5206_ID_G_PMODE_ACTIVE 0x00 #define FT5206_ID_G_PMODE_MONITOR 0x01 #define FT5206_ID_G_PMODE_HIBERNATE 0x03 #define FT5206_ID_G_STATE_CONFIGURE 0x00 #define FT5206_ID_G_STATE_WORK 0x01 #define FT5206_ID_G_STATE_CALIBRATION 0x02 #define FT5206_ID_G_STATE_FACTORY 0x03 #define FT5206_ID_G_STATE_AUTO_CALIBRATION 0x04 class FT5206 { public: FT5206(PinName sda, PinName scl, PinName interrupt); void init(void); uint8_t getTouchPositions(void); void intPanelTouched(void); bool getPanelTouched(void); uint8_t numberOfTouchPoints; uint16_t touchCoordinatesX[5]; uint16_t touchCoordinatesY[5]; private: InterruptIn m_interrupt; I2C m_i2c; int m_addr; char data[2]; bool debug_output_enabled; bool panelTouched; void writeRegister8(char reg, char val); char readRegister8(char reg); }; #endif