├── .gitignore ├── LICENSE ├── README.md ├── TAMC_GT911.cpp ├── TAMC_GT911.h ├── examples └── TouchPrint │ └── TouchPrint.ino └── library.properties /.gitignore: -------------------------------------------------------------------------------- 1 | .vscode/* 2 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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-------------------------------------------------------------------------------- 1 | # GT911 Library 2 | 3 | This is a library for the GT911 capacitive touch screen 4 | 5 | -------------------------------------------------------------------------------- /TAMC_GT911.cpp: -------------------------------------------------------------------------------- 1 | #include "Arduino.h" 2 | #include 3 | #include 4 | 5 | TAMC_GT911::TAMC_GT911(uint8_t _sda, uint8_t _scl, uint8_t _int, uint8_t _rst, uint16_t _width, uint16_t _height) : 6 | pinSda(_sda), pinScl(_scl), pinInt(_int), pinRst(_rst), width(_width), height(_height) { 7 | 8 | } 9 | 10 | void TAMC_GT911::begin(uint8_t _addr) { 11 | addr = _addr; 12 | Wire.begin(pinSda, pinScl); 13 | reset(); 14 | } 15 | void TAMC_GT911::reset() { 16 | pinMode(pinInt, OUTPUT); 17 | pinMode(pinRst, OUTPUT); 18 | digitalWrite(pinInt, 0); 19 | digitalWrite(pinRst, 0); 20 | delay(10); 21 | digitalWrite(pinInt, addr==GT911_ADDR2); 22 | delay(1); 23 | digitalWrite(pinRst, 1); 24 | delay(5); 25 | digitalWrite(pinInt, 0); 26 | delay(50); 27 | pinMode(pinInt, INPUT); 28 | // attachInterrupt(pinInt, TAMC_GT911::onInterrupt, RISING); 29 | delay(50); 30 | readBlockData(configBuf, GT911_CONFIG_START, GT911_CONFIG_SIZE); 31 | setResolution(width, height); 32 | } 33 | void TAMC_GT911::calculateChecksum() { 34 | uint8_t checksum; 35 | for (uint8_t i=0; i> 7 & 1; 71 | uint8_t proximityValid = pointInfo >> 5 & 1; 72 | uint8_t haveKey = pointInfo >> 4 & 1; 73 | isLargeDetect = pointInfo >> 6 & 1; 74 | touches = pointInfo & 0xF; 75 | // Serial.print("bufferStatus: ");Serial.println(bufferStatus); 76 | // Serial.print("largeDetect: ");Serial.println(isLargeDetect); 77 | // Serial.print("proximityValid: ");Serial.println(proximityValid); 78 | // Serial.print("haveKey: ");Serial.println(haveKey); 79 | // Serial.print("touches: ");Serial.println(touches); 80 | isTouched = touches > 0; 81 | if (bufferStatus == 1 && isTouched) { 82 | for (uint8_t i=0; i 7 | 8 | #define GT911_ADDR1 (uint8_t)0x5D 9 | #define GT911_ADDR2 (uint8_t)0x14 10 | 11 | #define ROTATION_LEFT (uint8_t)0 12 | #define ROTATION_INVERTED (uint8_t)1 13 | #define ROTATION_RIGHT (uint8_t)2 14 | #define ROTATION_NORMAL (uint8_t)3 15 | 16 | 17 | // Real-time command (Write only) 18 | #define GT911_COMMAND (uint16_t)0x8040 19 | #define GT911_ESD_CHECK (uint16_t)0x8041 20 | #define GT911_COMMAND_CHECK (uint16_t)0x8046 21 | 22 | // Configuration information (R/W) 23 | #define GT911_CONFIG_START (uint16_t)0x8047 24 | #define GT911_CONFIG_VERSION (uint16_t)0x8047 25 | #define GT911_X_OUTPUT_MAX_LOW (uint16_t)0x8048 26 | #define GT911_X_OUTPUT_MAX_HIGH (uint16_t)0x8049 27 | #define GT911_Y_OUTPUT_MAX_LOW (uint16_t)0x804A 28 | #define GT911_Y_OUTPUT_MAX_HIGH (uint16_t)0x804B 29 | #define GT911_TOUCH_NUMBER (uint16_t)0x804C 30 | #define GT911_MODULE_SWITCH_1 (uint16_t)0x804D 31 | #define GT911_MODULE_SWITCH_2 (uint16_t)0x804E 32 | #define GT911_SHAKE_COUNT (uint16_t)0x804F 33 | #define GT911_FILTER (uint16_t)0x8050 34 | #define GT911_LARGE_TOUCH (uint16_t)0x8051 35 | #define GT911_NOISE_REDUCTION (uint16_t)0x8052 36 | #define GT911_SCREEN_TOUCH_LEVEL (uint16_t)0x8053 37 | #define GT911_SCREEN_RELEASE_LEVEL (uint16_t)0x8054 38 | #define GT911_LOW_POWER_CONTROL (uint16_t)0x8055 39 | #define GT911_REFRESH_RATE (uint16_t)0x8056 40 | #define GT911_X_THRESHOLD (uint16_t)0x8057 41 | #define GT911_Y_THRESHOLD (uint16_t)0x8058 42 | #define GT911_X_SPEED_LIMIT (uint16_t)0x8059 //Reserve 43 | #define GT911_Y_SPEED_LIMIT (uint16_t)0x805A //Reserve 44 | #define GT911_SPACE_TOP_BOTTOM (uint16_t)0x805B 45 | #define GT911_SPACE_LEFT_RIGHT (uint16_t)0x805C 46 | #define GT911_MINI_FILTER (uint16_t)0x805D 47 | #define GT911_STRETCH_R0 (uint16_t)0x805E 48 | #define GT911_STRETCH_R1 (uint16_t)0x805F 49 | #define GT911_STRETCH_R2 (uint16_t)0x8060 50 | #define GT911_STRETCH_RM (uint16_t)0x8061 51 | #define GT911_DRV_GROUPA_NUM (uint16_t)0x8062 52 | #define GT911_DRV_GROUPB_NUM (uint16_t)0x8063 53 | #define GT911_SENSOR_NUM (uint16_t)0x8064 54 | #define GT911_FREQ_A_FACTOR (uint16_t)0x8065 55 | #define GT911_FREQ_B_FACTOR (uint16_t)0x8066 56 | #define GT911_PANEL_BIT_FREQ_L (uint16_t)0x8067 57 | #define GT911_PANEL_BIT_FREQ_H (uint16_t)0x8068 58 | #define GT911_PANEL_SENSOR_TIME_L (uint16_t)0x8069 //Reserve 59 | #define GT911_PANEL_SENSOR_TIME_H (uint16_t)0x806A 60 | #define GT911_PANEL_TX_GAIN (uint16_t)0x806B 61 | #define GT911_PANEL_RX_GAIN (uint16_t)0x806C 62 | #define GT911_PANEL_DUMP_SHIFT (uint16_t)0x806D 63 | #define GT911_DRV_FRAME_CONTROL (uint16_t)0x806E 64 | #define GT911_CHARGING_LEVEL_UP (uint16_t)0x806F 65 | #define GT911_MODULE_SWITCH3 (uint16_t)0x8070 66 | #define GT911_GESTURE_DIS (uint16_t)0X8071 67 | #define GT911_GESTURE_LONG_PRESS_TIME (uint16_t)0x8072 68 | #define GT911_X_Y_SLOPE_ADJUST (uint16_t)0X8073 69 | #define GT911_GESTURE_CONTROL (uint16_t)0X8074 70 | #define GT911_GESTURE_SWITCH1 (uint16_t)0X8075 71 | #define GT911_GESTURE_SWITCH2 (uint16_t)0X8076 72 | #define GT911_GESTURE_REFRESH_RATE (uint16_t)0x8077 73 | #define GT911_GESTURE_TOUCH_LEVEL (uint16_t)0x8078 74 | #define GT911_NEWGREENWAKEUPLEVEL (uint16_t)0x8079 75 | #define GT911_FREQ_HOPPING_START (uint16_t)0x807A 76 | #define GT911_FREQ_HOPPING_END (uint16_t)0X807B 77 | #define GT911_NOISE_DETECT_TIMES (uint16_t)0x807C 78 | #define GT911_HOPPING_FLAG (uint16_t)0X807D 79 | #define GT911_HOPPING_THRESHOLD (uint16_t)0X807E 80 | #define GT911_NOISE_THRESHOLD (uint16_t)0X807F //Reserve 81 | #define GT911_NOISE_MIN_THRESHOLD (uint16_t)0X8080 82 | #define GT911_HOPPING_SENSOR_GROUP (uint16_t)0X8082 83 | #define GT911_HOPPING_SEG1_NORMALIZE (uint16_t)0X8083 84 | #define GT911_HOPPING_SEG1_FACTOR (uint16_t)0X8084 85 | #define GT911_MAIN_CLOCK_AJDUST (uint16_t)0X8085 86 | #define GT911_HOPPING_SEG2_NORMALIZE (uint16_t)0X8086 87 | #define GT911_HOPPING_SEG2_FACTOR (uint16_t)0X8087 88 | #define GT911_HOPPING_SEG3_NORMALIZE (uint16_t)0X8089 89 | #define GT911_HOPPING_SEG3_FACTOR (uint16_t)0X808A 90 | #define GT911_HOPPING_SEG4_NORMALIZE (uint16_t)0X808C 91 | #define GT911_HOPPING_SEG4_FACTOR (uint16_t)0X808D 92 | #define GT911_HOPPING_SEG5_NORMALIZE (uint16_t)0X808F 93 | #define GT911_HOPPING_SEG5_FACTOR (uint16_t)0X8090 94 | #define GT911_HOPPING_SEG6_NORMALIZE (uint16_t)0X8092 95 | #define GT911_KEY_1 (uint16_t)0X8093 96 | #define GT911_KEY_2 (uint16_t)0X8094 97 | #define GT911_KEY_3 (uint16_t)0X8095 98 | #define GT911_KEY_4 (uint16_t)0X8096 99 | #define GT911_KEY_AREA (uint16_t)0X8097 100 | #define GT911_KEY_TOUCH_LEVEL (uint16_t)0X8098 101 | #define GT911_KEY_LEAVE_LEVEL (uint16_t)0X8099 102 | #define GT911_KEY_SENS_1_2 (uint16_t)0X809A 103 | #define GT911_KEY_SENS_3_4 (uint16_t)0X809B 104 | #define GT911_KEY_RESTRAIN (uint16_t)0X809C 105 | #define GT911_KEY_RESTRAIN_TIME (uint16_t)0X809D 106 | #define GT911_GESTURE_LARGE_TOUCH (uint16_t)0X809E 107 | #define GT911_HOTKNOT_NOISE_MAP (uint16_t)0X80A1 108 | #define GT911_LINK_THRESHOLD (uint16_t)0X80A2 109 | #define GT911_PXY_THRESHOLD (uint16_t)0X80A3 110 | #define GT911_GHOT_DUMP_SHIFT (uint16_t)0X80A4 111 | #define GT911_GHOT_RX_GAIN (uint16_t)0X80A5 112 | #define GT911_FREQ_GAIN0 (uint16_t)0X80A6 113 | #define GT911_FREQ_GAIN1 (uint16_t)0X80A7 114 | #define GT911_FREQ_GAIN2 (uint16_t)0X80A8 115 | #define GT911_FREQ_GAIN3 (uint16_t)0X80A9 116 | #define GT911_COMBINE_DIS (uint16_t)0X80B3 117 | #define GT911_SPLIT_SET (uint16_t)0X80B4 118 | #define GT911_SENSOR_CH0 (uint16_t)0X80B7 119 | #define GT911_DRIVER_CH0 (uint16_t)0X80D5 120 | #define GT911_CONFIG_CHKSUM (uint16_t)0X80FF 121 | #define GT911_CONFIG_FRESH (uint16_t)0X8100 122 | #define GT911_CONFIG_SIZE (uint16_t)0xFF-0x46 123 | // Coordinate information 124 | #define GT911_PRODUCT_ID (uint16_t)0X8140 125 | #define GT911_FIRMWARE_VERSION (uint16_t)0X8140 126 | #define GT911_RESOLUTION (uint16_t)0X8140 127 | #define GT911_VENDOR_ID (uint16_t)0X8140 128 | #define GT911_IMFORMATION (uint16_t)0X8140 129 | #define GT911_POINT_INFO (uint16_t)0X814E 130 | #define GT911_POINT_1 (uint16_t)0X814F 131 | #define GT911_POINT_2 (uint16_t)0X8157 132 | #define GT911_POINT_3 (uint16_t)0X815F 133 | #define GT911_POINT_4 (uint16_t)0X8167 134 | #define GT911_POINT_5 (uint16_t)0X816F 135 | #define GT911_POINTS_REG {GT911_POINT_1, GT911_POINT_2, GT911_POINT_3, GT911_POINT_4, GT911_POINT_5} 136 | 137 | class TP_Point { 138 | public: 139 | TP_Point(void); 140 | TP_Point(uint8_t id, uint16_t x, uint16_t y, uint16_t size); 141 | 142 | bool operator==(TP_Point); 143 | bool operator!=(TP_Point); 144 | 145 | uint8_t id; 146 | uint16_t x; 147 | uint16_t y; 148 | uint8_t size; 149 | }; 150 | 151 | class TAMC_GT911 { 152 | public: 153 | TAMC_GT911(uint8_t _sda, uint8_t _scl, uint8_t _int, uint8_t _rst, uint16_t _width, uint16_t _height); 154 | void begin(uint8_t _addr=GT911_ADDR1); 155 | void reset(); 156 | void setRotation(uint8_t rot); 157 | void setResolution(uint16_t _width, uint16_t _height); 158 | // void setOnRead(void (*isr)()); 159 | uint8_t getGesture(void); 160 | void read(void); 161 | uint8_t isLargeDetect; 162 | uint8_t touches = 0; 163 | bool isTouched = false; 164 | // uint8_t gesture = NO_GESTURE; 165 | TP_Point points[5]; 166 | 167 | private: 168 | void calculateChecksum(); 169 | void reflashConfig(); 170 | // static void ARDUINO_ISR_ATTR onInterrupt(); 171 | TP_Point readPoint(uint8_t *data); 172 | // void (*onRead)(); 173 | void writeByteData(uint16_t reg, uint8_t val); 174 | uint8_t readByteData(uint16_t reg); 175 | void writeBlockData(uint16_t reg, uint8_t *val, uint8_t size); 176 | void readBlockData(uint8_t *buf, uint16_t reg, uint8_t size); 177 | uint8_t rotation = ROTATION_NORMAL; 178 | uint8_t addr; 179 | uint8_t pinSda; 180 | uint8_t pinScl; 181 | uint8_t pinInt; 182 | uint8_t pinRst; 183 | uint16_t width; 184 | uint16_t height; 185 | uint8_t configBuf[GT911_CONFIG_SIZE]; 186 | // uint8_t *configBuf; 187 | }; 188 | 189 | #endif // TAMC_GT911_H 190 | -------------------------------------------------------------------------------- /examples/TouchPrint/TouchPrint.ino: -------------------------------------------------------------------------------- 1 | #include "TAMC_GT911.h" 2 | 3 | #define TOUCH_SDA 4 4 | #define TOUCH_SCL 5 5 | #define TOUCH_INT 25 6 | #define TOUCH_RST 26 7 | #define TOUCH_WIDTH 320 8 | #define TOUCH_HEIGHT 240 9 | 10 | TAMC_GT911 tp = TAMC_GT911(TOUCH_SDA, TOUCH_SCL, TOUCH_INT, TOUCH_RST, TOUCH_WIDTH, TOUCH_HEIGHT); 11 | 12 | void setup() { 13 | Serial.begin(115200); 14 | Serial.println("TAMC_GT911 Example: Ready"); 15 | tp.begin(); 16 | tp.setRotation(ROTATION_NORMAL); 17 | } 18 | 19 | void loop() { 20 | tp.read(); 21 | if (tp.isTouched){ 22 | for (int i=0; i 5 | sentence=Arduino library for GT911 6 | paragraph=Arduino library for GT911 Touch Panel 7 | category=Display 8 | url=https://github.com/tamctec/gt911-arduino 9 | architectures=esp32 10 | --------------------------------------------------------------------------------