diff --git a/src/configuration.h b/src/configuration.h
index fd4a5b196..d5aacdbd2 100644
--- a/src/configuration.h
+++ b/src/configuration.h
@@ -152,6 +152,7 @@ along with this program. If not, see .
#define MLX90614_ADDR_DEF 0x5A
#define CGRADSENS_ADDR 0x66
#define LTR390UV_ADDR 0x53
+#define XPOWERS_AXP192_AXP2101_ADDRESS 0x34 // same adress as TCA8418
// -----------------------------------------------------------------------------
// ACCELEROMETER
diff --git a/src/detect/ScanI2C.cpp b/src/detect/ScanI2C.cpp
index 4caa0f730..0ce6e1127 100644
--- a/src/detect/ScanI2C.cpp
+++ b/src/detect/ScanI2C.cpp
@@ -31,8 +31,8 @@ ScanI2C::FoundDevice ScanI2C::firstRTC() const
ScanI2C::FoundDevice ScanI2C::firstKeyboard() const
{
- ScanI2C::DeviceType types[] = {CARDKB, TDECKKB, BBQ10KB, RAK14004, MPR121KB};
- return firstOfOrNONE(5, types);
+ ScanI2C::DeviceType types[] = {CARDKB, TDECKKB, BBQ10KB, RAK14004, MPR121KB, TCA8418KB};
+ return firstOfOrNONE(6, types);
}
ScanI2C::FoundDevice ScanI2C::firstAccelerometer() const
diff --git a/src/detect/ScanI2C.h b/src/detect/ScanI2C.h
index 5b6bbe629..ca9bf4d82 100644
--- a/src/detect/ScanI2C.h
+++ b/src/detect/ScanI2C.h
@@ -18,7 +18,7 @@ class ScanI2C
TDECKKB,
BBQ10KB,
RAK14004,
- PMU_AXP192_AXP2101,
+ PMU_AXP192_AXP2101, // has the same adress as the TCA8418KB
BME_680,
BME_280,
BMP_280,
@@ -69,6 +69,7 @@ class ScanI2C
DFROBOT_RAIN,
DPS310,
LTR390UV,
+ TCA8418KB,
} DeviceType;
// typedef uint8_t DeviceAddress;
diff --git a/src/detect/ScanI2CTwoWire.cpp b/src/detect/ScanI2CTwoWire.cpp
index 8b779277d..e4aa702c8 100644
--- a/src/detect/ScanI2CTwoWire.cpp
+++ b/src/detect/ScanI2CTwoWire.cpp
@@ -10,11 +10,6 @@
#include "meshUtils.h" // vformat
#endif
-// AXP192 and AXP2101 have the same device address, we just need to identify it in Power.cpp
-#ifndef XPOWERS_AXP192_AXP2101_ADDRESS
-#define XPOWERS_AXP192_AXP2101_ADDRESS 0x34
-#endif
-
bool in_array(uint8_t *array, int size, uint8_t lookfor)
{
int i;
@@ -218,9 +213,13 @@ void ScanI2CTwoWire::scanPort(I2CPort port, uint8_t *address, uint8_t asize)
#ifdef HAS_NCP5623
SCAN_SIMPLE_CASE(NCP5623_ADDR, NCP5623, "NCP5623", (uint8_t)addr.address);
#endif
-#ifdef HAS_PMU
+#if defined(HAS_AXP192) || defined(HAS_AXP2101)
SCAN_SIMPLE_CASE(XPOWERS_AXP192_AXP2101_ADDRESS, PMU_AXP192_AXP2101, "AXP192/AXP2101", (uint8_t)addr.address)
#endif
+#if !defined(HAS_AXP192) && !defined(HAS_AXP2101)
+ SCAN_SIMPLE_CASE(XPOWERS_AXP192_AXP2101_ADDRESS, TCA8418KB, "TCA8418", (uint8_t)addr.address)
+#endif
+
case BME_ADDR:
case BME_ADDR_ALTERNATE:
registerValue = getRegisterValue(ScanI2CTwoWire::RegisterLocation(addr, 0xD0), 1); // GET_ID
diff --git a/src/input/TCA8418Keyboard.cpp b/src/input/TCA8418Keyboard.cpp
new file mode 100644
index 000000000..21cd7b2d5
--- /dev/null
+++ b/src/input/TCA8418Keyboard.cpp
@@ -0,0 +1,561 @@
+// Based on the MPR121 Keyboard and Adafruit TCA8418 library
+
+#include "TCA8418Keyboard.h"
+#include "configuration.h"
+
+#include
+
+// REGISTERS
+// #define _TCA8418_REG_RESERVED 0x00
+#define _TCA8418_REG_CFG 0x01 // Configuration register
+#define _TCA8418_REG_INT_STAT 0x02 // Interrupt status
+#define _TCA8418_REG_KEY_LCK_EC 0x03 // Key lock and event counter
+#define _TCA8418_REG_KEY_EVENT_A 0x04 // Key event register A
+#define _TCA8418_REG_KEY_EVENT_B 0x05 // Key event register B
+#define _TCA8418_REG_KEY_EVENT_C 0x06 // Key event register C
+#define _TCA8418_REG_KEY_EVENT_D 0x07 // Key event register D
+#define _TCA8418_REG_KEY_EVENT_E 0x08 // Key event register E
+#define _TCA8418_REG_KEY_EVENT_F 0x09 // Key event register F
+#define _TCA8418_REG_KEY_EVENT_G 0x0A // Key event register G
+#define _TCA8418_REG_KEY_EVENT_H 0x0B // Key event register H
+#define _TCA8418_REG_KEY_EVENT_I 0x0C // Key event register I
+#define _TCA8418_REG_KEY_EVENT_J 0x0D // Key event register J
+#define _TCA8418_REG_KP_LCK_TIMER 0x0E // Keypad lock1 to lock2 timer
+#define _TCA8418_REG_UNLOCK_1 0x0F // Unlock register 1
+#define _TCA8418_REG_UNLOCK_2 0x10 // Unlock register 2
+#define _TCA8418_REG_GPIO_INT_STAT_1 0x11 // GPIO interrupt status 1
+#define _TCA8418_REG_GPIO_INT_STAT_2 0x12 // GPIO interrupt status 2
+#define _TCA8418_REG_GPIO_INT_STAT_3 0x13 // GPIO interrupt status 3
+#define _TCA8418_REG_GPIO_DAT_STAT_1 0x14 // GPIO data status 1
+#define _TCA8418_REG_GPIO_DAT_STAT_2 0x15 // GPIO data status 2
+#define _TCA8418_REG_GPIO_DAT_STAT_3 0x16 // GPIO data status 3
+#define _TCA8418_REG_GPIO_DAT_OUT_1 0x17 // GPIO data out 1
+#define _TCA8418_REG_GPIO_DAT_OUT_2 0x18 // GPIO data out 2
+#define _TCA8418_REG_GPIO_DAT_OUT_3 0x19 // GPIO data out 3
+#define _TCA8418_REG_GPIO_INT_EN_1 0x1A // GPIO interrupt enable 1
+#define _TCA8418_REG_GPIO_INT_EN_2 0x1B // GPIO interrupt enable 2
+#define _TCA8418_REG_GPIO_INT_EN_3 0x1C // GPIO interrupt enable 3
+#define _TCA8418_REG_KP_GPIO_1 0x1D // Keypad/GPIO select 1
+#define _TCA8418_REG_KP_GPIO_2 0x1E // Keypad/GPIO select 2
+#define _TCA8418_REG_KP_GPIO_3 0x1F // Keypad/GPIO select 3
+#define _TCA8418_REG_GPI_EM_1 0x20 // GPI event mode 1
+#define _TCA8418_REG_GPI_EM_2 0x21 // GPI event mode 2
+#define _TCA8418_REG_GPI_EM_3 0x22 // GPI event mode 3
+#define _TCA8418_REG_GPIO_DIR_1 0x23 // GPIO data direction 1
+#define _TCA8418_REG_GPIO_DIR_2 0x24 // GPIO data direction 2
+#define _TCA8418_REG_GPIO_DIR_3 0x25 // GPIO data direction 3
+#define _TCA8418_REG_GPIO_INT_LVL_1 0x26 // GPIO edge/level detect 1
+#define _TCA8418_REG_GPIO_INT_LVL_2 0x27 // GPIO edge/level detect 2
+#define _TCA8418_REG_GPIO_INT_LVL_3 0x28 // GPIO edge/level detect 3
+#define _TCA8418_REG_DEBOUNCE_DIS_1 0x29 // Debounce disable 1
+#define _TCA8418_REG_DEBOUNCE_DIS_2 0x2A // Debounce disable 2
+#define _TCA8418_REG_DEBOUNCE_DIS_3 0x2B // Debounce disable 3
+#define _TCA8418_REG_GPIO_PULL_1 0x2C // GPIO pull-up disable 1
+#define _TCA8418_REG_GPIO_PULL_2 0x2D // GPIO pull-up disable 2
+#define _TCA8418_REG_GPIO_PULL_3 0x2E // GPIO pull-up disable 3
+// #define _TCA8418_REG_RESERVED 0x2F
+
+// FIELDS CONFIG REGISTER 1
+#define _TCA8418_REG_CFG_AI 0x80 // Auto-increment for read/write
+#define _TCA8418_REG_CFG_GPI_E_CGF 0x40 // Event mode config
+#define _TCA8418_REG_CFG_OVR_FLOW_M 0x20 // Overflow mode enable
+#define _TCA8418_REG_CFG_INT_CFG 0x10 // Interrupt config
+#define _TCA8418_REG_CFG_OVR_FLOW_IEN 0x08 // Overflow interrupt enable
+#define _TCA8418_REG_CFG_K_LCK_IEN 0x04 // Keypad lock interrupt enable
+#define _TCA8418_REG_CFG_GPI_IEN 0x02 // GPI interrupt enable
+#define _TCA8418_REG_CFG_KE_IEN 0x01 // Key events interrupt enable
+
+// FIELDS INT_STAT REGISTER 2
+#define _TCA8418_REG_STAT_CAD_INT 0x10 // Ctrl-alt-del seq status
+#define _TCA8418_REG_STAT_OVR_FLOW_INT 0x08 // Overflow interrupt status
+#define _TCA8418_REG_STAT_K_LCK_INT 0x04 // Key lock interrupt status
+#define _TCA8418_REG_STAT_GPI_INT 0x02 // GPI interrupt status
+#define _TCA8418_REG_STAT_K_INT 0x01 // Key events interrupt status
+
+// FIELDS KEY_LCK_EC REGISTER 3
+#define _TCA8418_REG_LCK_EC_K_LCK_EN 0x40 // Key lock enable
+#define _TCA8418_REG_LCK_EC_LCK_2 0x20 // Keypad lock status 2
+#define _TCA8418_REG_LCK_EC_LCK_1 0x10 // Keypad lock status 1
+#define _TCA8418_REG_LCK_EC_KLEC_3 0x08 // Key event count bit 3
+#define _TCA8418_REG_LCK_EC_KLEC_2 0x04 // Key event count bit 2
+#define _TCA8418_REG_LCK_EC_KLEC_1 0x02 // Key event count bit 1
+#define _TCA8418_REG_LCK_EC_KLEC_0 0x01 // Key event count bit 0
+
+// Pin IDs for matrix rows/columns
+enum {
+ _TCA8418_ROW0, // Pin ID for row 0
+ _TCA8418_ROW1, // Pin ID for row 1
+ _TCA8418_ROW2, // Pin ID for row 2
+ _TCA8418_ROW3, // Pin ID for row 3
+ _TCA8418_ROW4, // Pin ID for row 4
+ _TCA8418_ROW5, // Pin ID for row 5
+ _TCA8418_ROW6, // Pin ID for row 6
+ _TCA8418_ROW7, // Pin ID for row 7
+ _TCA8418_COL0, // Pin ID for column 0
+ _TCA8418_COL1, // Pin ID for column 1
+ _TCA8418_COL2, // Pin ID for column 2
+ _TCA8418_COL3, // Pin ID for column 3
+ _TCA8418_COL4, // Pin ID for column 4
+ _TCA8418_COL5, // Pin ID for column 5
+ _TCA8418_COL6, // Pin ID for column 6
+ _TCA8418_COL7, // Pin ID for column 7
+ _TCA8418_COL8, // Pin ID for column 8
+ _TCA8418_COL9 // Pin ID for column 9
+};
+
+#define _TCA8418_COLS 3
+#define _TCA8418_ROWS 4
+#define _TCA8418_NUM_KEYS 12
+
+uint8_t TCA8418TapMod[_TCA8418_NUM_KEYS] = {13, 7, 7, 7, 7, 7,
+ 9, 7, 9, 2, 2, 2}; // Num chars per key, Modulus for rotating through characters
+
+unsigned char TCA8418TapMap[_TCA8418_NUM_KEYS][13] = {
+ {'1', '.', ',', '?', '!', ':', ';', '-', '_', '\\', '/', '(', ')'}, // 1
+ {'2', 'a', 'b', 'c', 'A', 'B', 'C'}, // 2
+ {'3', 'd', 'e', 'f', 'D', 'E', 'F'}, // 3
+ {'4', 'g', 'h', 'i', 'G', 'H', 'I'}, // 4
+ {'5', 'j', 'k', 'l', 'J', 'K', 'L'}, // 5
+ {'6', 'm', 'n', 'o', 'M', 'N', 'O'}, // 6
+ {'7', 'p', 'q', 'r', 's', 'P', 'Q', 'R', 'S'}, // 7
+ {'8', 't', 'u', 'v', 'T', 'U', 'V'}, // 8
+ {'9', 'w', 'x', 'y', 'z', 'W', 'X', 'Y', 'Z'}, // 9
+ {'*', '+'}, // *
+ {'0', ' '}, // 0
+ {'#', '@'}, // #
+};
+
+unsigned char TCA8418LongPressMap[_TCA8418_NUM_KEYS] = {
+ _TCA8418_ESC, // 1
+ _TCA8418_UP, // 2
+ _TCA8418_NONE, // 3
+ _TCA8418_LEFT, // 4
+ _TCA8418_NONE, // 5
+ _TCA8418_RIGHT, // 6
+ _TCA8418_NONE, // 7
+ _TCA8418_DOWN, // 8
+ _TCA8418_NONE, // 9
+ _TCA8418_BSP, // *
+ _TCA8418_NONE, // 0
+ _TCA8418_NONE, // #
+};
+
+#define _TCA8418_LONG_PRESS_THRESHOLD 2000
+#define _TCA8418_MULTI_TAP_THRESHOLD 750
+
+TCA8418Keyboard::TCA8418Keyboard() : m_wire(nullptr), m_addr(0), readCallback(nullptr), writeCallback(nullptr)
+{
+ state = Init;
+ last_key = -1;
+ next_key = -1;
+ should_backspace = false;
+ last_tap = 0L;
+ char_idx = 0;
+ tap_interval = 0;
+ backlight_on = true;
+ queue = "";
+}
+
+void TCA8418Keyboard::begin(uint8_t addr, TwoWire *wire)
+{
+ m_addr = addr;
+ m_wire = wire;
+
+ m_wire->begin();
+
+ reset();
+}
+
+void TCA8418Keyboard::begin(i2c_com_fptr_t r, i2c_com_fptr_t w, uint8_t addr)
+{
+ m_addr = addr;
+ m_wire = nullptr;
+ writeCallback = w;
+ readCallback = r;
+ reset();
+}
+
+void TCA8418Keyboard::reset()
+{
+ LOG_DEBUG("TCA8418 Reset");
+ // GPIO
+ // set default all GIO pins to INPUT
+ writeRegister(_TCA8418_REG_GPIO_DIR_1, 0x00);
+ writeRegister(_TCA8418_REG_GPIO_DIR_2, 0x00);
+ // Set COL9 as GPIO output
+ writeRegister(_TCA8418_REG_GPIO_DIR_3, 0x02);
+ // Switch off keyboard backlight (COL9 = LOW)
+ writeRegister(_TCA8418_REG_GPIO_DAT_OUT_3, 0x00);
+
+ // add all pins to key events
+ writeRegister(_TCA8418_REG_GPI_EM_1, 0xFF);
+ writeRegister(_TCA8418_REG_GPI_EM_2, 0xFF);
+ writeRegister(_TCA8418_REG_GPI_EM_3, 0xFF);
+
+ // set all pins to FALLING interrupts
+ writeRegister(_TCA8418_REG_GPIO_INT_LVL_1, 0x00);
+ writeRegister(_TCA8418_REG_GPIO_INT_LVL_2, 0x00);
+ writeRegister(_TCA8418_REG_GPIO_INT_LVL_3, 0x00);
+
+ // add all pins to interrupts
+ writeRegister(_TCA8418_REG_GPIO_INT_EN_1, 0xFF);
+ writeRegister(_TCA8418_REG_GPIO_INT_EN_2, 0xFF);
+ writeRegister(_TCA8418_REG_GPIO_INT_EN_3, 0xFF);
+
+ // Set keyboard matrix size
+ matrix(_TCA8418_ROWS, _TCA8418_COLS);
+ enableDebounce();
+ flush();
+ state = Idle;
+}
+
+bool TCA8418Keyboard::matrix(uint8_t rows, uint8_t columns)
+{
+ if ((rows > 8) || (columns > 10))
+ return false;
+
+ // Skip zero size matrix
+ if ((rows != 0) && (columns != 0)) {
+ // Setup the keypad matrix.
+ uint8_t mask = 0x00;
+ for (int r = 0; r < rows; r++) {
+ mask <<= 1;
+ mask |= 1;
+ }
+ writeRegister(_TCA8418_REG_KP_GPIO_1, mask);
+
+ mask = 0x00;
+ for (int c = 0; c < columns && c < 8; c++) {
+ mask <<= 1;
+ mask |= 1;
+ }
+ writeRegister(_TCA8418_REG_KP_GPIO_2, mask);
+
+ if (columns > 8) {
+ if (columns == 9)
+ mask = 0x01;
+ else
+ mask = 0x03;
+ writeRegister(_TCA8418_REG_KP_GPIO_3, mask);
+ }
+ }
+
+ return true;
+}
+
+uint8_t TCA8418Keyboard::keyCount() const
+{
+ uint8_t eventCount = readRegister(_TCA8418_REG_KEY_LCK_EC);
+ eventCount &= 0x0F; // lower 4 bits only
+ return eventCount;
+}
+
+bool TCA8418Keyboard::hasEvent()
+{
+ return queue.length() > 0;
+}
+
+void TCA8418Keyboard::queueEvent(char next)
+{
+ if (next == _TCA8418_NONE) {
+ return;
+ }
+ queue.concat(next);
+}
+
+char TCA8418Keyboard::dequeueEvent()
+{
+ if (queue.length() < 1) {
+ return _TCA8418_NONE;
+ }
+ char next = queue.charAt(0);
+ queue.remove(0, 1);
+ return next;
+}
+
+void TCA8418Keyboard::trigger()
+{
+ if (keyCount() == 0) {
+ return;
+ }
+ if (state != Init) {
+ // Read the key register
+ uint8_t k = readRegister(_TCA8418_REG_KEY_EVENT_A);
+ uint8_t key = k & 0x7F;
+ if (k & 0x80) {
+ if (state == Idle)
+ pressed(key);
+ return;
+ } else {
+ if (state == Held) {
+ released();
+ }
+ state = Idle;
+ return;
+ }
+ } else {
+ reset();
+ }
+}
+
+void TCA8418Keyboard::pressed(uint8_t key)
+{
+ if (state == Init || state == Busy) {
+ return;
+ }
+ uint8_t next_key = 0;
+ int row = (key - 1) / 10;
+ int col = (key - 1) % 10;
+
+ if (row >= _TCA8418_ROWS || col >= _TCA8418_COLS) {
+ return; // Invalid key
+ }
+
+ // Compute key index based on dynamic row/column
+ next_key = row * _TCA8418_COLS + col;
+
+ // LOG_DEBUG("TCA8418: Key %u -> Next Key %u", key, next_key);
+
+ state = Held;
+ uint32_t now = millis();
+ tap_interval = now - last_tap;
+ if (tap_interval < 0) {
+ // Long running, millis has overflowed.
+ last_tap = 0;
+ state = Busy;
+ return;
+ }
+
+ // Check if the key is the same as the last one or if the time interval has passed
+ if (next_key != last_key || tap_interval > _TCA8418_MULTI_TAP_THRESHOLD) {
+ char_idx = 0; // Reset char index if new key or long press
+ should_backspace = false; // dont backspace on new key
+ } else {
+ char_idx += 1; // Cycle through characters if same key pressed
+ should_backspace = true; // allow backspace on same key
+ }
+
+ // Store the current key as the last key
+ last_key = next_key;
+ last_tap = now;
+}
+
+void TCA8418Keyboard::released()
+{
+ if (state != Held) {
+ return;
+ }
+
+ if (last_key < 0 || last_key > _TCA8418_NUM_KEYS) { // reset to idle if last_key out of bounds
+ last_key = -1;
+ state = Idle;
+ return;
+ }
+ uint32_t now = millis();
+ int32_t held_interval = now - last_tap;
+ last_tap = now;
+ if (tap_interval < _TCA8418_MULTI_TAP_THRESHOLD && should_backspace) {
+ queueEvent(_TCA8418_BSP);
+ }
+ if (held_interval > _TCA8418_LONG_PRESS_THRESHOLD) {
+ queueEvent(TCA8418LongPressMap[last_key]);
+ // LOG_DEBUG("Long Press Key: %i Map: %i", last_key, TCA8418LongPressMap[last_key]);
+ } else {
+ queueEvent(TCA8418TapMap[last_key][(char_idx % TCA8418TapMod[last_key])]);
+ // LOG_DEBUG("Key Press: %i Index:%i if %i Map: %c", last_key, char_idx, TCA8418TapMod[last_key],
+ // TCA8418TapMap[last_key][(char_idx % TCA8418TapMod[last_key])]);
+ }
+}
+
+uint8_t TCA8418Keyboard::flush()
+{
+ // Flush key events
+ uint8_t count = 0;
+ while (readRegister(_TCA8418_REG_KEY_EVENT_A) != 0)
+ count++;
+ // Flush gpio events
+ readRegister(_TCA8418_REG_GPIO_INT_STAT_1);
+ readRegister(_TCA8418_REG_GPIO_INT_STAT_2);
+ readRegister(_TCA8418_REG_GPIO_INT_STAT_3);
+ // Clear INT_STAT register
+ writeRegister(_TCA8418_REG_INT_STAT, 3);
+ return count;
+}
+
+uint8_t TCA8418Keyboard::digitalRead(uint8_t pinnum) const
+{
+ if (pinnum > _TCA8418_COL9)
+ return 0xFF;
+
+ uint8_t reg = _TCA8418_REG_GPIO_DAT_STAT_1 + pinnum / 8;
+ uint8_t mask = (1 << (pinnum % 8));
+
+ // Level 0 = low other = high
+ uint8_t value = readRegister(reg);
+ if (value & mask)
+ return HIGH;
+ return LOW;
+}
+
+bool TCA8418Keyboard::digitalWrite(uint8_t pinnum, uint8_t level)
+{
+ if (pinnum > _TCA8418_COL9)
+ return false;
+
+ uint8_t reg = _TCA8418_REG_GPIO_DAT_OUT_1 + pinnum / 8;
+ uint8_t mask = (1 << (pinnum % 8));
+
+ // Level 0 = low other = high
+ uint8_t value = readRegister(reg);
+ if (level == LOW)
+ value &= ~mask;
+ else
+ value |= mask;
+ writeRegister(reg, value);
+ return true;
+}
+
+bool TCA8418Keyboard::pinMode(uint8_t pinnum, uint8_t mode)
+{
+ if (pinnum > _TCA8418_COL9)
+ return false;
+
+ uint8_t idx = pinnum / 8;
+ uint8_t reg = _TCA8418_REG_GPIO_DIR_1 + idx;
+ uint8_t mask = (1 << (pinnum % 8));
+
+ // Mode 0 = input 1 = output
+ uint8_t value = readRegister(reg);
+ if (mode == OUTPUT)
+ value |= mask;
+ else
+ value &= ~mask;
+ writeRegister(reg, value);
+
+ // Pullup 0 = enabled 1 = disabled
+ reg = _TCA8418_REG_GPIO_PULL_1 + idx;
+ value = readRegister(reg);
+ if (mode == INPUT_PULLUP)
+ value &= ~mask;
+ else
+ value |= mask;
+ writeRegister(reg, value);
+
+ return true;
+}
+
+bool TCA8418Keyboard::pinIRQMode(uint8_t pinnum, uint8_t mode)
+{
+ if (pinnum > _TCA8418_COL9)
+ return false;
+ if ((mode != RISING) && (mode != FALLING))
+ return false;
+
+ // Mode 0 = falling 1 = rising
+ uint8_t idx = pinnum / 8;
+ uint8_t reg = _TCA8418_REG_GPIO_INT_LVL_1 + idx;
+ uint8_t mask = (1 << (pinnum % 8));
+
+ uint8_t value = readRegister(reg);
+ if (mode == RISING)
+ value |= mask;
+ else
+ value &= ~mask;
+ writeRegister(reg, value);
+
+ // Enable interrupt
+ reg = _TCA8418_REG_GPIO_INT_EN_1 + idx;
+ value = readRegister(reg);
+ value |= mask;
+ writeRegister(reg, value);
+
+ return true;
+}
+
+void TCA8418Keyboard::enableInterrupts()
+{
+ uint8_t value = readRegister(_TCA8418_REG_CFG);
+ value |= (_TCA8418_REG_CFG_GPI_IEN | _TCA8418_REG_CFG_KE_IEN);
+ writeRegister(_TCA8418_REG_CFG, value);
+};
+
+void TCA8418Keyboard::disableInterrupts()
+{
+ uint8_t value = readRegister(_TCA8418_REG_CFG);
+ value &= ~(_TCA8418_REG_CFG_GPI_IEN | _TCA8418_REG_CFG_KE_IEN);
+ writeRegister(_TCA8418_REG_CFG, value);
+};
+
+void TCA8418Keyboard::enableMatrixOverflow()
+{
+ uint8_t value = readRegister(_TCA8418_REG_CFG);
+ value |= _TCA8418_REG_CFG_OVR_FLOW_M;
+ writeRegister(_TCA8418_REG_CFG, value);
+};
+
+void TCA8418Keyboard::disableMatrixOverflow()
+{
+ uint8_t value = readRegister(_TCA8418_REG_CFG);
+ value &= ~_TCA8418_REG_CFG_OVR_FLOW_M;
+ writeRegister(_TCA8418_REG_CFG, value);
+};
+
+void TCA8418Keyboard::enableDebounce()
+{
+ writeRegister(_TCA8418_REG_DEBOUNCE_DIS_1, 0x00);
+ writeRegister(_TCA8418_REG_DEBOUNCE_DIS_2, 0x00);
+ writeRegister(_TCA8418_REG_DEBOUNCE_DIS_3, 0x00);
+}
+
+void TCA8418Keyboard::disableDebounce()
+{
+ writeRegister(_TCA8418_REG_DEBOUNCE_DIS_1, 0xFF);
+ writeRegister(_TCA8418_REG_DEBOUNCE_DIS_2, 0xFF);
+ writeRegister(_TCA8418_REG_DEBOUNCE_DIS_3, 0xFF);
+}
+
+void TCA8418Keyboard::setBacklight(bool on)
+{
+ if (on) {
+ digitalWrite(_TCA8418_COL9, HIGH);
+ } else {
+ digitalWrite(_TCA8418_COL9, LOW);
+ }
+}
+
+uint8_t TCA8418Keyboard::readRegister(uint8_t reg) const
+{
+ if (m_wire) {
+ m_wire->beginTransmission(m_addr);
+ m_wire->write(reg);
+ m_wire->endTransmission();
+
+ m_wire->requestFrom(m_addr, (uint8_t)1);
+ if (m_wire->available() < 1)
+ return 0;
+
+ return m_wire->read();
+ }
+ if (readCallback) {
+ uint8_t data;
+ readCallback(m_addr, reg, &data, 1);
+ return data;
+ }
+ return 0;
+}
+
+void TCA8418Keyboard::writeRegister(uint8_t reg, uint8_t value)
+{
+ uint8_t data[2];
+ data[0] = reg;
+ data[1] = value;
+
+ if (m_wire) {
+ m_wire->beginTransmission(m_addr);
+ m_wire->write(data, sizeof(uint8_t) * 2);
+ m_wire->endTransmission();
+ }
+ if (writeCallback) {
+ writeCallback(m_addr, data[0], &(data[1]), 1);
+ }
+}
\ No newline at end of file
diff --git a/src/input/TCA8418Keyboard.h b/src/input/TCA8418Keyboard.h
new file mode 100644
index 000000000..c7f3c1f28
--- /dev/null
+++ b/src/input/TCA8418Keyboard.h
@@ -0,0 +1,83 @@
+// Based on the MPR121 Keyboard and Adafruit TCA8418 library
+#include "configuration.h"
+#include
+
+#define _TCA8418_NONE 0x00
+#define _TCA8418_REBOOT 0x90
+#define _TCA8418_LEFT 0xb4
+#define _TCA8418_UP 0xb5
+#define _TCA8418_DOWN 0xb6
+#define _TCA8418_RIGHT 0xb7
+#define _TCA8418_ESC 0x1b
+#define _TCA8418_BSP 0x08
+#define _TCA8418_SELECT 0x0d
+
+class TCA8418Keyboard
+{
+ public:
+ typedef uint8_t (*i2c_com_fptr_t)(uint8_t dev_addr, uint8_t reg_addr, uint8_t *data, uint8_t len);
+
+ enum KeyState { Init = 0, Idle, Held, Busy };
+
+ KeyState state;
+ int8_t last_key;
+ int8_t next_key;
+ bool should_backspace;
+ uint32_t last_tap;
+ uint8_t char_idx;
+ int32_t tap_interval;
+ bool backlight_on;
+
+ String queue;
+
+ TCA8418Keyboard();
+
+ void begin(uint8_t addr = XPOWERS_AXP192_AXP2101_ADDRESS, TwoWire *wire = &Wire);
+ void begin(i2c_com_fptr_t r, i2c_com_fptr_t w, uint8_t addr = XPOWERS_AXP192_AXP2101_ADDRESS);
+
+ void reset(void);
+ // Configure the size of the keypad.
+ // All other rows and columns are set as inputs.
+ bool matrix(uint8_t rows, uint8_t columns);
+
+ // Flush all events in the FIFO buffer + GPIO events.
+ uint8_t flush(void);
+
+ // Key events available in the internal FIFO buffer.
+ uint8_t keyCount(void) const;
+
+ void trigger(void);
+ void pressed(uint8_t key);
+ void released(void);
+ bool hasEvent(void);
+ char dequeueEvent(void);
+ void queueEvent(char);
+
+ uint8_t digitalRead(uint8_t pinnum) const;
+ bool digitalWrite(uint8_t pinnum, uint8_t level);
+ bool pinMode(uint8_t pinnum, uint8_t mode);
+ bool pinIRQMode(uint8_t pinnum, uint8_t mode); // MODE FALLING or RISING
+
+ // enable / disable interrupts for matrix and GPI pins
+ void enableInterrupts();
+ void disableInterrupts();
+
+ // ignore key events when FIFO buffer is full or not.
+ void enableMatrixOverflow();
+ void disableMatrixOverflow();
+
+ // debounce keys.
+ void enableDebounce();
+ void disableDebounce();
+
+ void setBacklight(bool on);
+
+ uint8_t readRegister(uint8_t reg) const;
+ void writeRegister(uint8_t reg, uint8_t value);
+
+ private:
+ TwoWire *m_wire;
+ uint8_t m_addr;
+ i2c_com_fptr_t readCallback;
+ i2c_com_fptr_t writeCallback;
+};
diff --git a/src/input/cardKbI2cImpl.cpp b/src/input/cardKbI2cImpl.cpp
index eb9b07d6e..21ecf381a 100644
--- a/src/input/cardKbI2cImpl.cpp
+++ b/src/input/cardKbI2cImpl.cpp
@@ -12,8 +12,8 @@ void CardKbI2cImpl::init()
#if !MESHTASTIC_EXCLUDE_I2C && !defined(ARCH_PORTDUINO) && !defined(I2C_NO_RESCAN)
if (cardkb_found.address == 0x00) {
LOG_DEBUG("Rescan for I2C keyboard");
- uint8_t i2caddr_scan[] = {CARDKB_ADDR, TDECK_KB_ADDR, BBQ10_KB_ADDR, MPR121_KB_ADDR};
- uint8_t i2caddr_asize = 4;
+ uint8_t i2caddr_scan[] = {CARDKB_ADDR, TDECK_KB_ADDR, BBQ10_KB_ADDR, MPR121_KB_ADDR, XPOWERS_AXP192_AXP2101_ADDRESS};
+ uint8_t i2caddr_asize = 5;
auto i2cScanner = std::unique_ptr(new ScanI2CTwoWire());
#if WIRE_INTERFACES_COUNT == 2
@@ -43,6 +43,10 @@ void CardKbI2cImpl::init()
// assign an arbitrary value to distinguish from other models
kb_model = 0x37;
break;
+ case ScanI2C::DeviceType::TCA8418KB:
+ // assign an arbitrary value to distinguish from other models
+ kb_model = 0x84;
+ break;
default:
// use this as default since it's also just zero
LOG_WARN("kb_info.type is unknown(0x%02x), setting kb_model=0x00", kb_info.type);
diff --git a/src/input/kbI2cBase.cpp b/src/input/kbI2cBase.cpp
index 9b1a27745..b0775a1bb 100644
--- a/src/input/kbI2cBase.cpp
+++ b/src/input/kbI2cBase.cpp
@@ -43,6 +43,9 @@ int32_t KbI2cBase::runOnce()
if (cardkb_found.address == MPR121_KB_ADDR) {
MPRkeyboard.begin(MPR121_KB_ADDR, &Wire1);
}
+ if (cardkb_found.address == XPOWERS_AXP192_AXP2101_ADDRESS) {
+ TCAkeyboard.begin(XPOWERS_AXP192_AXP2101_ADDRESS, &Wire1);
+ }
break;
#endif
case ScanI2C::WIRE:
@@ -55,6 +58,9 @@ int32_t KbI2cBase::runOnce()
if (cardkb_found.address == MPR121_KB_ADDR) {
MPRkeyboard.begin(MPR121_KB_ADDR, &Wire);
}
+ if (cardkb_found.address == XPOWERS_AXP192_AXP2101_ADDRESS) {
+ TCAKeyboard.begin(XPOWERS_AXP192_AXP2101_ADDRESS, &Wire);
+ }
break;
case ScanI2C::NO_I2C:
default:
@@ -226,6 +232,68 @@ int32_t KbI2cBase::runOnce()
}
break;
}
+ case 0x84: { // Adafruit TCA8418
+ TCAKeyboard.trigger();
+ InputEvent e;
+ while (TCAKeyboard.hasEvent()) {
+ char nextEvent = TCAKeyboard.dequeueEvent();
+ e.inputEvent = ANYKEY;
+ e.kbchar = 0x00;
+ e.source = this->_originName;
+ switch (nextEvent) {
+ case _TCA8418_NONE:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_NONE;
+ e.kbchar = 0x00;
+ break;
+ case _TCA8418_REBOOT:
+ e.inputEvent = ANYKEY;
+ e.kbchar = INPUT_BROKER_MSG_REBOOT;
+ break;
+ case _TCA8418_LEFT:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_LEFT;
+ e.kbchar = 0x00;
+ break;
+ case _TCA8418_UP:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_UP;
+ e.kbchar = 0x00;
+ break;
+ case _TCA8418_DOWN:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_DOWN;
+ e.kbchar = 0x00;
+ break;
+ case _TCA8418_RIGHT:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_RIGHT;
+ e.kbchar = 0x00;
+ break;
+ case _TCA8418_BSP:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_BACK;
+ e.kbchar = 0x08;
+ break;
+ case _TCA8418_SELECT:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_SELECT;
+ e.kbchar = 0x0d;
+ break;
+ case _TCA8418_ESC:
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_CANCEL;
+ e.kbchar = 0x1b;
+ break;
+ default:
+ if (nextEvent > 127) {
+ e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_NONE;
+ e.kbchar = 0x00;
+ break;
+ }
+ e.inputEvent = ANYKEY;
+ e.kbchar = nextEvent;
+ break;
+ }
+ if (e.inputEvent != meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_NONE) {
+ LOG_DEBUG("TCA8418 Notifying: %i Char: %c", e.inputEvent, e.kbchar);
+ this->notifyObservers(&e);
+ }
+ }
+ break;
+ }
case 0x02: {
// RAK14004
uint8_t rDataBuf[8] = {0};
diff --git a/src/input/kbI2cBase.h b/src/input/kbI2cBase.h
index dc2414fc0..8193433fe 100644
--- a/src/input/kbI2cBase.h
+++ b/src/input/kbI2cBase.h
@@ -3,6 +3,7 @@
#include "BBQ10Keyboard.h"
#include "InputBroker.h"
#include "MPR121Keyboard.h"
+#include "TCA8418Keyboard.h"
#include "Wire.h"
#include "concurrency/OSThread.h"
@@ -21,5 +22,6 @@ class KbI2cBase : public Observable, public concurrency::OST
BBQ10Keyboard Q10keyboard;
MPR121Keyboard MPRkeyboard;
+ TCA8418Keyboard TCAKeyboard;
bool is_sym = false;
};
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 59cd6d8e9..08260a26c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -587,6 +587,10 @@ void setup()
// assign an arbitrary value to distinguish from other models
kb_model = 0x37;
break;
+ case ScanI2C::DeviceType::TCA8418KB:
+ // assign an arbitrary value to distinguish from other models
+ kb_model = 0x84;
+ break;
default:
// use this as default since it's also just zero
LOG_WARN("kb_info.type is unknown(0x%02x), setting kb_model=0x00", kb_info.type);