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feat(t-deck): WIP t-deck support
* Added gt911 component for t-deck touchscreen (does not seem to work yet) * Updated config and code to work for t-deck screen
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5 files changed

+364
-11
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5 files changed

+364
-11
lines changed

‎CMakeLists.txt‎

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@@ -13,7 +13,7 @@ set(EXTRA_COMPONENT_DIRS
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set(
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COMPONENTS
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"main esptool_py driver lwip button display display_drivers input_drivers logger lvgl mdns socket task tt21100 wifi gui"
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"main esptool_py driver lwip button display display_drivers input_drivers logger lvgl mdns socket task tt21100 gt911 wifi gui"
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CACHE STRING
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"List of components to include"
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)

‎components/gt911/CMakeLists.txt‎

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idf_component_register(
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INCLUDE_DIRS "include"
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REQUIRES "logger"
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)

‎components/gt911/include/gt911.hpp‎

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#pragma once
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#include <functional>
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#include "logger.hpp"
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class Gt911 {
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public:
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static constexpr uint8_t DEFAULT_ADDRESS_1 = 0x5D;
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static constexpr uint8_t DEFAULT_ADDRESS_2 = 0x14;
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typedef std::function<void(uint8_t, uint16_t, uint8_t*, size_t)> read_fn;
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typedef std::function<void(uint8_t, uint8_t*, size_t)> write_fn;
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struct Config {
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read_fn read;
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write_fn write;
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uint8_t address = DEFAULT_ADDRESS_1; /**< Which address to use for this chip? */
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espp::Logger::Verbosity log_level{espp::Logger::Verbosity::WARN}; /**< Log verbosity for the input driver. */
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};
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Gt911(const Config& config)
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: read_(config.read),
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write_(config.write),
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address_(config.address),
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logger_({.tag = "Gt911", .level = config.log_level}) {
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init();
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}
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bool read() {
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static constexpr size_t DATA_LEN = CONTACT_SIZE * MAX_CONTACTS;
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static uint8_t data[DATA_LEN];
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read(Registers::POINT_INFO, data, DATA_LEN);
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num_touch_points_ = data[0] & 0x0f;
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if (num_touch_points_ > 0) {
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logger_.debug("Got {} touch points", num_touch_points_);
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// convert the data pointer to a GTPoint*
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GTPoint* point = (GTPoint*)&data[1];
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x_ = point->x;
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y_ = point->y;
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logger_.debug("Touch at ({}, {})", x_, y_);
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}
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write(Registers::POINT_INFO, 0x00); // sync signal
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return num_touch_points_ > 0;
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}
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uint8_t get_num_touch_points() {
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return num_touch_points_;
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}
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void get_touch_point(uint8_t *num_touch_points, uint16_t *x, uint16_t *y) {
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*num_touch_points = get_num_touch_points();
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if (*num_touch_points != 0) {
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*x = x_;
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*y = y_;
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logger_.info("Got touch ({}, {})", *x, *y);
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}
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}
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uint8_t get_home_button_state() {
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return home_button_pressed_;
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}
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protected:
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void init() {
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using namespace std::chrono_literals;
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/*
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*/
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// write 0x02 (software reset) to GT911 COMMAND register
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write(Registers::COMMAND, 0x02);
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// delay 200 ms
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std::this_thread::sleep_for(200ms);
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// val = read SWITCH_1
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uint8_t val = read(Registers::SWITCH_1);
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val &= 0xFC;
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val |= 0x03;
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// write back val to switch 1
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write(Registers::SWITCH_1, val);
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// delay 200 ms
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std::this_thread::sleep_for(200ms);
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}
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static constexpr int CONTACT_SIZE = 8;
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static constexpr int MAX_CONTACTS = 5;
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static constexpr int CONFIG_MAX_LEN = 240;
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static constexpr int CONFIG_911_LEN = 186;
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static constexpr int CONFIG_967_LEN = 228;
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enum class Registers : uint16_t {
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COMMAND = 0x8040,
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CONFIG = 0x8047,
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SWITCH_1 = 0x804D,
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SWITCH_2 = 0x804E,
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REFRESH_RATE = 0x8056,
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DATA = 0x8140,
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POINT_INFO = 0x814E,
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POINTS = 0x814F,
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POINT_1 = 0x814F,
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POINT_2 = 0x8157,
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POINT_3 = 0x815F,
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POINT_4 = 0x8167,
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POINT_5 = 0x816F,
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};
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// From Goodix library
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struct GTInfo {
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// 0x8140-0x814A
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char productId[4];
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uint16_t fwId;
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uint16_t xResolution;
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uint16_t yResolution;
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uint8_t vendorId;
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} __attribute__((packed));
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struct GTPoint {
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// 0x814F-0x8156, ... 0x8176 (5 points)
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uint8_t trackId;
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uint16_t x;
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uint16_t y;
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uint16_t area;
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uint8_t reserved;
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} __attribute__((packed));
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struct GTLevelConfig {
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uint8_t touch; // Threshold of touch grow out of nothing
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uint8_t leave; // Threshold of touch decrease to nothing
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} __attribute__((packed));
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struct GTStylusConfig {
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uint8_t txGain;
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uint8_t rxGain;
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uint8_t dumpShift;
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GTLevelConfig level;
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uint8_t control; //Pen mode escape time out period (Unit: Sec)
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} __attribute__((packed));
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struct GTFreqHoppingConfig {
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uint16_t hoppingBitFreq;
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uint8_t hoppingFactor;
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} __attribute__((packed));
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struct GTKeyConfig {
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// Key position: 0-255 valid
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// 0 means no touch, it means independent touch key when 4 of the keys are 8 multiples
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uint8_t pos1;
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uint8_t pos2;
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uint8_t pos3;
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uint8_t pos4;
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uint8_t area;
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GTLevelConfig level;
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uint8_t sens12;
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uint8_t sens34;
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uint8_t restrain;
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} __attribute__((packed));
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struct GTConfig {
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// start at 0x8047
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uint8_t configVersion;
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uint16_t xResolution;
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uint16_t yResolution;
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// 0x804C
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uint8_t touchNumber; // 3:0 Touch No.: 1~10
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// 7:6 Reserved, 5:4 Stretch rank, 3 X2Y, 2 Sito
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// 1:0 INT trig method: 00-rising, 01-falling, 02-low level, 03-high level enquiry
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uint8_t moduleSwitch1;
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uint8_t moduleSwitch2; // bit0 TouchKey
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uint8_t shakeCount; // 3:0 Finger shake count
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// 0x8050
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// 7:6 First filter, 5:0 Normal filter (filtering value of original coordinate window, coefficiency is 1)
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uint8_t filter;
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uint8_t largeTouch;
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uint8_t noiseReduction;
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GTLevelConfig screenLevel;
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uint8_t lowPowerControl; // Time to low power consumption (0~15s)
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uint8_t refreshRate; // Coordinate report rate (Cycle: 5+N ms)
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uint8_t xThreshold; //res
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uint8_t yThreshold; //res
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uint8_t xSpeedLimit; //res
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uint8_t ySpeedLimit; //res
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uint8_t vSpace; // 4bit top/bottom (coefficient 32)
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uint8_t hSpace; // 4bit left/right
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//0x805D-0x8061
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uint8_t stretchRate; //Level of weak stretch (Strtch X/16 Pitch)
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uint8_t stretchR0; // Interval 1 coefficient
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uint8_t stretchR1; // Interval 2 coefficient
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uint8_t stretchR2; // Interval 3 coefficient
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uint8_t stretchRM; // All intervals base number
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uint8_t drvGroupANum;
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uint8_t drvGroupBNum;
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uint8_t sensorNum;
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uint8_t freqAFactor;
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uint8_t freqBFactor;
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// 0x8067
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uint16_t pannelBitFreq; //Baseband of Driver group A\B (1526HZ<baseband<14600Hz)
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uint16_t pannelSensorTime; //res
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uint8_t pannelTxGain;
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uint8_t pannelRxGain;
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uint8_t pannelDumpShift;
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uint8_t drvFrameControl;
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// 0x806F - 0x8071
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uint8_t NC_2[3];
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GTStylusConfig stylusConfig;
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// 0x8078-0x8079
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uint8_t NC_3[2];
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uint8_t freqHoppingStart; // Frequency hopping start frequency (Unit: 2KHz, 50 means 100KHz )
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uint8_t freqHoppingEnd; // Frequency hopping stop frequency (Unit: 2KHz, 150 means 300KHz )
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uint8_t noiseDetectTims;
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uint8_t hoppingFlag;
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uint8_t hoppingThreshold;
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uint8_t noiseThreshold;
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uint8_t NC_4[2];
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// 0x8082
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GTFreqHoppingConfig hoppingSegments[5];
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// 0x8091
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uint8_t NC_5[2];
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GTKeyConfig keys;
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} __attribute__((packed));
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void write(Registers reg, uint8_t val) {
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write(reg, &val, 1);
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}
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void write(Registers reg, uint8_t* data, size_t len) {
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uint16_t reg_addr = (uint16_t)reg;
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size_t d_len = 2 + len;
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uint8_t d[d_len];
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d[0] = reg_addr >> 8;
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d[1] = reg_addr & 0xFF;
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memcpy(&d[2], data, len);
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write_(address_, d, d_len);
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}
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uint8_t read(Registers reg) {
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uint8_t val = 0x00;
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read(reg, &val, 1);
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return val;
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}
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void read(Registers reg, uint8_t* data, size_t len) {
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uint16_t reg_addr = (uint16_t)reg;
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read_(address_, reg_addr, data, len);
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}
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read_fn read_;
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write_fn write_;
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uint8_t address_;
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std::atomic<bool> home_button_pressed_{false};
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std::atomic<uint8_t> num_touch_points_;
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std::atomic<uint16_t> x_;
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std::atomic<uint16_t> y_;
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espp::Logger logger_;
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};

‎main/Kconfig.projbuild‎

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@@ -9,6 +9,8 @@ menu "Wireless Debug Display Configuration"
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bool "ESP32 WROVER KIT V4"
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config HARDWARE_BOX
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bool "ESP BOX"
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config HARDWARE_TDECK
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bool "LILYGO T DECK"
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endchoice
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config DEBUG_SERVER_PORT

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