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.vscode/*

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{"type": "library", "name": "TAMC_GT911", "version": "1.0.2", "spec": {"owner": "tamctec", "id": 12932, "name": "TAMC_GT911", "requirements": null, "uri": null}}

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# GT911 Library
This is a library for the GT911 capacitive touch screen

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#include "Arduino.h"
#include <TAMC_GT911.h>
#include <Wire.h>
TAMC_GT911::TAMC_GT911(uint8_t _sda, uint8_t _scl, uint8_t _int, uint8_t _rst, uint16_t _width, uint16_t _height) :
pinSda(_sda), pinScl(_scl), pinInt(_int), pinRst(_rst), width(_width), height(_height) {
}
void TAMC_GT911::begin(uint8_t _addr) {
addr = _addr;
Wire.begin(pinSda, pinScl);
reset();
}
void TAMC_GT911::reset() {
pinMode(pinInt, OUTPUT);
pinMode(pinRst, OUTPUT);
digitalWrite(pinInt, 0);
digitalWrite(pinRst, 0);
delay(10);
digitalWrite(pinInt, addr==GT911_ADDR2);
delay(1);
digitalWrite(pinRst, 1);
delay(5);
digitalWrite(pinInt, 0);
delay(50);
pinMode(pinInt, INPUT);
// attachInterrupt(pinInt, TAMC_GT911::onInterrupt, RISING);
delay(50);
readBlockData(configBuf, GT911_CONFIG_START, GT911_CONFIG_SIZE);
setResolution(width, height);
}
void TAMC_GT911::calculateChecksum() {
uint8_t checksum;
for (uint8_t i=0; i<GT911_CONFIG_SIZE; i++) {
checksum += configBuf[i];
}
checksum = (~checksum) + 1;
configBuf[GT911_CONFIG_CHKSUM - GT911_CONFIG_START] = checksum;
}
// void ARDUINO_ISR_ATTR TAMC_GT911::onInterrupt() {
// read();
// TAMC_GT911::onRead();
// }
void TAMC_GT911::reflashConfig() {
calculateChecksum();
writeByteData(GT911_CONFIG_CHKSUM, configBuf[GT911_CONFIG_CHKSUM-GT911_CONFIG_START]);
writeByteData(GT911_CONFIG_FRESH, 1);
}
void TAMC_GT911::setRotation(uint8_t rot) {
rotation = rot;
}
void TAMC_GT911::setResolution(uint16_t _width, uint16_t _height) {
configBuf[GT911_X_OUTPUT_MAX_LOW - GT911_CONFIG_START] = lowByte(_width);
configBuf[GT911_X_OUTPUT_MAX_HIGH - GT911_CONFIG_START] = highByte(_width);
configBuf[GT911_Y_OUTPUT_MAX_LOW - GT911_CONFIG_START] = lowByte(_height);
configBuf[GT911_Y_OUTPUT_MAX_HIGH - GT911_CONFIG_START] = highByte(_height);
reflashConfig();
}
// void TAMC_GT911::setOnRead(void (*isr)()) {
// onRead = isr;
// }
void TAMC_GT911::read(void) {
// Serial.println("TAMC_GT911::read");
uint8_t data[7];
uint8_t id;
uint16_t x, y, size;
uint8_t pointInfo = readByteData(GT911_POINT_INFO);
uint8_t bufferStatus = pointInfo >> 7 & 1;
uint8_t proximityValid = pointInfo >> 5 & 1;
uint8_t haveKey = pointInfo >> 4 & 1;
isLargeDetect = pointInfo >> 6 & 1;
touches = pointInfo & 0xF;
// Serial.print("bufferStatus: ");Serial.println(bufferStatus);
// Serial.print("largeDetect: ");Serial.println(isLargeDetect);
// Serial.print("proximityValid: ");Serial.println(proximityValid);
// Serial.print("haveKey: ");Serial.println(haveKey);
// Serial.print("touches: ");Serial.println(touches);
isTouched = touches > 0;
if (bufferStatus == 1 && isTouched) {
for (uint8_t i=0; i<touches; i++) {
readBlockData(data, GT911_POINT_1 + i * 8, 7);
points[i] = readPoint(data);
}
}
writeByteData(GT911_POINT_INFO, 0);
}
TP_Point TAMC_GT911::readPoint(uint8_t *data) {
uint16_t temp;
uint8_t id = data[0];
uint16_t x = data[1] + (data[2] << 8);
uint16_t y = data[3] + (data[4] << 8);
uint16_t size = data[5] + (data[6] << 8);
switch (rotation){
case ROTATION_NORMAL:
x = width - x;
y = height - y;
break;
case ROTATION_LEFT:
temp = x;
x = width - y;
y = temp;
break;
case ROTATION_INVERTED:
x = x;
y = y;
break;
case ROTATION_RIGHT:
temp = x;
x = y;
y = height - temp;
break;
default:
break;
}
return TP_Point(id, x, y, size);
}
void TAMC_GT911::writeByteData(uint16_t reg, uint8_t val) {
Wire.beginTransmission(addr);
Wire.write(highByte(reg));
Wire.write(lowByte(reg));
Wire.write(val);
Wire.endTransmission();
}
uint8_t TAMC_GT911::readByteData(uint16_t reg) {
uint8_t x;
Wire.beginTransmission(addr);
Wire.write(highByte(reg));
Wire.write(lowByte(reg));
Wire.endTransmission();
Wire.requestFrom(addr, (uint8_t)1);
x = Wire.read();
return x;
}
void TAMC_GT911::writeBlockData(uint16_t reg, uint8_t *val, uint8_t size) {
Wire.beginTransmission(addr);
Wire.write(highByte(reg));
Wire.write(lowByte(reg));
// Wire.write(val, size);
for (uint8_t i=0; i<size; i++) {
Wire.write(val[i]);
}
Wire.endTransmission();
}
void TAMC_GT911::readBlockData(uint8_t *buf, uint16_t reg, uint8_t size) {
Wire.beginTransmission(addr);
Wire.write(highByte(reg));
Wire.write(lowByte(reg));
Wire.endTransmission();
Wire.requestFrom(addr, size);
for (uint8_t i=0; i<size; i++) {
buf[i] = Wire.read();
}
}
TP_Point::TP_Point(void) {
id = x = y = size = 0;
}
TP_Point::TP_Point(uint8_t _id, uint16_t _x, uint16_t _y, uint16_t _size) {
id = _id;
x = _x;
y = _y;
size = _size;
}
bool TP_Point::operator==(TP_Point point) {
return ((point.x == x) && (point.y == y) && (point.size == size));
}
bool TP_Point::operator!=(TP_Point point) {
return ((point.x != x) || (point.y != y) || (point.size != size));
}

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#ifndef TAMC_GT911_H
#define TAMC_GT911_H
#include "Arduino.h"
#include <Wire.h>
#define GT911_ADDR1 (uint8_t)0x5D
#define GT911_ADDR2 (uint8_t)0x14
#define ROTATION_LEFT (uint8_t)0
#define ROTATION_INVERTED (uint8_t)1
#define ROTATION_RIGHT (uint8_t)2
#define ROTATION_NORMAL (uint8_t)3
// Real-time command (Write only)
#define GT911_COMMAND (uint16_t)0x8040
#define GT911_ESD_CHECK (uint16_t)0x8041
#define GT911_COMMAND_CHECK (uint16_t)0x8046
// Configuration information (R/W)
#define GT911_CONFIG_START (uint16_t)0x8047
#define GT911_CONFIG_VERSION (uint16_t)0x8047
#define GT911_X_OUTPUT_MAX_LOW (uint16_t)0x8048
#define GT911_X_OUTPUT_MAX_HIGH (uint16_t)0x8049
#define GT911_Y_OUTPUT_MAX_LOW (uint16_t)0x804A
#define GT911_Y_OUTPUT_MAX_HIGH (uint16_t)0x804B
#define GT911_TOUCH_NUMBER (uint16_t)0x804C
#define GT911_MODULE_SWITCH_1 (uint16_t)0x804D
#define GT911_MODULE_SWITCH_2 (uint16_t)0x804E
#define GT911_SHAKE_COUNT (uint16_t)0x804F
#define GT911_FILTER (uint16_t)0x8050
#define GT911_LARGE_TOUCH (uint16_t)0x8051
#define GT911_NOISE_REDUCTION (uint16_t)0x8052
#define GT911_SCREEN_TOUCH_LEVEL (uint16_t)0x8053
#define GT911_SCREEN_RELEASE_LEVEL (uint16_t)0x8054
#define GT911_LOW_POWER_CONTROL (uint16_t)0x8055
#define GT911_REFRESH_RATE (uint16_t)0x8056
#define GT911_X_THRESHOLD (uint16_t)0x8057
#define GT911_Y_THRESHOLD (uint16_t)0x8058
#define GT911_X_SPEED_LIMIT (uint16_t)0x8059 //Reserve
#define GT911_Y_SPEED_LIMIT (uint16_t)0x805A //Reserve
#define GT911_SPACE_TOP_BOTTOM (uint16_t)0x805B
#define GT911_SPACE_LEFT_RIGHT (uint16_t)0x805C
#define GT911_MINI_FILTER (uint16_t)0x805D
#define GT911_STRETCH_R0 (uint16_t)0x805E
#define GT911_STRETCH_R1 (uint16_t)0x805F
#define GT911_STRETCH_R2 (uint16_t)0x8060
#define GT911_STRETCH_RM (uint16_t)0x8061
#define GT911_DRV_GROUPA_NUM (uint16_t)0x8062
#define GT911_DRV_GROUPB_NUM (uint16_t)0x8063
#define GT911_SENSOR_NUM (uint16_t)0x8064
#define GT911_FREQ_A_FACTOR (uint16_t)0x8065
#define GT911_FREQ_B_FACTOR (uint16_t)0x8066
#define GT911_PANEL_BIT_FREQ_L (uint16_t)0x8067
#define GT911_PANEL_BIT_FREQ_H (uint16_t)0x8068
#define GT911_PANEL_SENSOR_TIME_L (uint16_t)0x8069 //Reserve
#define GT911_PANEL_SENSOR_TIME_H (uint16_t)0x806A
#define GT911_PANEL_TX_GAIN (uint16_t)0x806B
#define GT911_PANEL_RX_GAIN (uint16_t)0x806C
#define GT911_PANEL_DUMP_SHIFT (uint16_t)0x806D
#define GT911_DRV_FRAME_CONTROL (uint16_t)0x806E
#define GT911_CHARGING_LEVEL_UP (uint16_t)0x806F
#define GT911_MODULE_SWITCH3 (uint16_t)0x8070
#define GT911_GESTURE_DIS (uint16_t)0X8071
#define GT911_GESTURE_LONG_PRESS_TIME (uint16_t)0x8072
#define GT911_X_Y_SLOPE_ADJUST (uint16_t)0X8073
#define GT911_GESTURE_CONTROL (uint16_t)0X8074
#define GT911_GESTURE_SWITCH1 (uint16_t)0X8075
#define GT911_GESTURE_SWITCH2 (uint16_t)0X8076
#define GT911_GESTURE_REFRESH_RATE (uint16_t)0x8077
#define GT911_GESTURE_TOUCH_LEVEL (uint16_t)0x8078
#define GT911_NEWGREENWAKEUPLEVEL (uint16_t)0x8079
#define GT911_FREQ_HOPPING_START (uint16_t)0x807A
#define GT911_FREQ_HOPPING_END (uint16_t)0X807B
#define GT911_NOISE_DETECT_TIMES (uint16_t)0x807C
#define GT911_HOPPING_FLAG (uint16_t)0X807D
#define GT911_HOPPING_THRESHOLD (uint16_t)0X807E
#define GT911_NOISE_THRESHOLD (uint16_t)0X807F //Reserve
#define GT911_NOISE_MIN_THRESHOLD (uint16_t)0X8080
#define GT911_HOPPING_SENSOR_GROUP (uint16_t)0X8082
#define GT911_HOPPING_SEG1_NORMALIZE (uint16_t)0X8083
#define GT911_HOPPING_SEG1_FACTOR (uint16_t)0X8084
#define GT911_MAIN_CLOCK_AJDUST (uint16_t)0X8085
#define GT911_HOPPING_SEG2_NORMALIZE (uint16_t)0X8086
#define GT911_HOPPING_SEG2_FACTOR (uint16_t)0X8087
#define GT911_HOPPING_SEG3_NORMALIZE (uint16_t)0X8089
#define GT911_HOPPING_SEG3_FACTOR (uint16_t)0X808A
#define GT911_HOPPING_SEG4_NORMALIZE (uint16_t)0X808C
#define GT911_HOPPING_SEG4_FACTOR (uint16_t)0X808D
#define GT911_HOPPING_SEG5_NORMALIZE (uint16_t)0X808F
#define GT911_HOPPING_SEG5_FACTOR (uint16_t)0X8090
#define GT911_HOPPING_SEG6_NORMALIZE (uint16_t)0X8092
#define GT911_KEY_1 (uint16_t)0X8093
#define GT911_KEY_2 (uint16_t)0X8094
#define GT911_KEY_3 (uint16_t)0X8095
#define GT911_KEY_4 (uint16_t)0X8096
#define GT911_KEY_AREA (uint16_t)0X8097
#define GT911_KEY_TOUCH_LEVEL (uint16_t)0X8098
#define GT911_KEY_LEAVE_LEVEL (uint16_t)0X8099
#define GT911_KEY_SENS_1_2 (uint16_t)0X809A
#define GT911_KEY_SENS_3_4 (uint16_t)0X809B
#define GT911_KEY_RESTRAIN (uint16_t)0X809C
#define GT911_KEY_RESTRAIN_TIME (uint16_t)0X809D
#define GT911_GESTURE_LARGE_TOUCH (uint16_t)0X809E
#define GT911_HOTKNOT_NOISE_MAP (uint16_t)0X80A1
#define GT911_LINK_THRESHOLD (uint16_t)0X80A2
#define GT911_PXY_THRESHOLD (uint16_t)0X80A3
#define GT911_GHOT_DUMP_SHIFT (uint16_t)0X80A4
#define GT911_GHOT_RX_GAIN (uint16_t)0X80A5
#define GT911_FREQ_GAIN0 (uint16_t)0X80A6
#define GT911_FREQ_GAIN1 (uint16_t)0X80A7
#define GT911_FREQ_GAIN2 (uint16_t)0X80A8
#define GT911_FREQ_GAIN3 (uint16_t)0X80A9
#define GT911_COMBINE_DIS (uint16_t)0X80B3
#define GT911_SPLIT_SET (uint16_t)0X80B4
#define GT911_SENSOR_CH0 (uint16_t)0X80B7
#define GT911_DRIVER_CH0 (uint16_t)0X80D5
#define GT911_CONFIG_CHKSUM (uint16_t)0X80FF
#define GT911_CONFIG_FRESH (uint16_t)0X8100
#define GT911_CONFIG_SIZE (uint16_t)0xFF-0x46
// Coordinate information
#define GT911_PRODUCT_ID (uint16_t)0X8140
#define GT911_FIRMWARE_VERSION (uint16_t)0X8140
#define GT911_RESOLUTION (uint16_t)0X8140
#define GT911_VENDOR_ID (uint16_t)0X8140
#define GT911_IMFORMATION (uint16_t)0X8140
#define GT911_POINT_INFO (uint16_t)0X814E
#define GT911_POINT_1 (uint16_t)0X814F
#define GT911_POINT_2 (uint16_t)0X8157
#define GT911_POINT_3 (uint16_t)0X815F
#define GT911_POINT_4 (uint16_t)0X8167
#define GT911_POINT_5 (uint16_t)0X816F
#define GT911_POINTS_REG {GT911_POINT_1, GT911_POINT_2, GT911_POINT_3, GT911_POINT_4, GT911_POINT_5}
class TP_Point {
public:
TP_Point(void);
TP_Point(uint8_t id, uint16_t x, uint16_t y, uint16_t size);
bool operator==(TP_Point);
bool operator!=(TP_Point);
uint8_t id;
uint16_t x;
uint16_t y;
uint8_t size;
};
class TAMC_GT911 {
public:
TAMC_GT911(uint8_t _sda, uint8_t _scl, uint8_t _int, uint8_t _rst, uint16_t _width, uint16_t _height);
void begin(uint8_t _addr=GT911_ADDR1);
void reset();
void setRotation(uint8_t rot);
void setResolution(uint16_t _width, uint16_t _height);
// void setOnRead(void (*isr)());
uint8_t getGesture(void);
void read(void);
uint8_t isLargeDetect;
uint8_t touches = 0;
bool isTouched = false;
// uint8_t gesture = NO_GESTURE;
TP_Point points[5];
private:
void calculateChecksum();
void reflashConfig();
// static void ARDUINO_ISR_ATTR onInterrupt();
TP_Point readPoint(uint8_t *data);
// void (*onRead)();
void writeByteData(uint16_t reg, uint8_t val);
uint8_t readByteData(uint16_t reg);
void writeBlockData(uint16_t reg, uint8_t *val, uint8_t size);
void readBlockData(uint8_t *buf, uint16_t reg, uint8_t size);
uint8_t rotation = ROTATION_NORMAL;
uint8_t addr;
uint8_t pinSda;
uint8_t pinScl;
uint8_t pinInt;
uint8_t pinRst;
uint16_t width;
uint16_t height;
uint8_t configBuf[GT911_CONFIG_SIZE];
// uint8_t *configBuf;
};
#endif // TAMC_GT911_H

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.pio/libdeps/esp32-s3-devkitc-1/TAMC_GT911/examples/TouchPrint/TouchPrint.ino Normal file
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#include "TAMC_GT911.h"
#define TOUCH_SDA 4
#define TOUCH_SCL 5
#define TOUCH_INT 25
#define TOUCH_RST 26
#define TOUCH_WIDTH 320
#define TOUCH_HEIGHT 240
TAMC_GT911 tp = TAMC_GT911(TOUCH_SDA, TOUCH_SCL, TOUCH_INT, TOUCH_RST, TOUCH_WIDTH, TOUCH_HEIGHT);
void setup() {
Serial.begin(115200);
Serial.println("TAMC_GT911 Example: Ready");
tp.begin();
tp.setRotation(ROTATION_NORMAL);
}
void loop() {
tp.read();
if (tp.isTouched){
for (int i=0; i<tp.touches; i++){
Serial.print("Touch ");Serial.print(i+1);Serial.print(": ");;
Serial.print(" x: ");Serial.print(tp.points[i].x);
Serial.print(" y: ");Serial.print(tp.points[i].y);
Serial.print(" size: ");Serial.println(tp.points[i].size);
Serial.println(' ');
}
}
}

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.pio/libdeps/esp32-s3-devkitc-1/TAMC_GT911/library.properties Normal file
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name=TAMC_GT911
version=1.0.2
author=TAMC
maintainer=TAMC <tamctec@gmail.com>
sentence=Arduino library for GT911
paragraph=Arduino library for GT911 Touch Panel
category=Display
url=https://github.com/tamctec/gt911-arduino
architectures=esp32