rbxii3/firmware
1
0
Fork 0
mirror of https://github.com/meshtastic/firmware.git synced 2025-12-20 17:52:35 +00:00
Code Issues Packages Projects Releases Wiki Activity

MPR121 Touch IC Based Keypad Input Module (#5103)

Browse Source 
Implements an input driver utilising the MPR121 Touch IC and is compatible with common MPR121 keypad PCB's.

- Implements a "candybar" phone style 12-key keypad
  - multiple taps to rotate through the character set
  - longpress for navigation keys
  - keymap to allow arbitrary routing of MPR121 pin to button configuration
  - extendable to other key functions
- Integrates with the existing kbI2cBase implementation
- Works with CannedMessageModule Freetext mode
- Can be used with common MPR121 boards, such as https://www.amazon.com/MPR121-Capacitive-Keyboard-Buttons-Sensitive/dp/B083R89CHB/ref=sr_1_6
- Of use for PCB based radios, where some form of low surface area low component freetext input is required, but also without consuming too many IO pins.
- Tested on a T3S3 connected to Wire1 (Second) interface.
  - Demonstration of functionality: https://youtu.be/UI6QP6nGvhY
This commit is contained in:
aussieklutz
2024-10-21 16:53:36 +10:00
committed by GitHub
parent 09c8642aa6
commit 5ff8c904c8
10 changed files with 586 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

69
src/input/kbI2cBase.cpp
View File

@@ -40,6 +40,9 @@ int32_t KbI2cBase::runOnce()
Q10keyboard.begin(BBQ10_KB_ADDR, &Wire1);
Q10keyboard.setBacklight(0);
}
if (cardkb_found.address == MPR121_KB_ADDR) {
MPRkeyboard.begin(MPR121_KB_ADDR, &Wire1);
}
break;
#endif
case ScanI2C::WIRE:
@@ -49,6 +52,9 @@ int32_t KbI2cBase::runOnce()
Q10keyboard.begin(BBQ10_KB_ADDR, &Wire);
Q10keyboard.setBacklight(0);
}
if (cardkb_found.address == MPR121_KB_ADDR) {
MPRkeyboard.begin(MPR121_KB_ADDR, &Wire);
}
break;
case ScanI2C::NO_I2C:
default:
@@ -157,6 +163,69 @@ int32_t KbI2cBase::runOnce()
}
break;
}
case 0x37: { // MPR121
MPRkeyboard.trigger();
InputEvent e;
while (MPRkeyboard.hasEvent()) {
char nextEvent = MPRkeyboard.dequeueEvent();
e.inputEvent = ANYKEY;
e.kbchar = 0x00;
e.source = this->_originName;
switch (nextEvent) {
case 0x00: // MPR121_NONE
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_NONE;
e.kbchar = 0x00;
break;
case 0x90: // MPR121_REBOOT
e.inputEvent = ANYKEY;
e.kbchar = INPUT_BROKER_MSG_REBOOT;
break;
case 0xb4: // MPR121_LEFT
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_LEFT;
e.kbchar = 0x00;
break;
case 0xb5: // MPR121_UP
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_UP;
e.kbchar = 0x00;
break;
case 0xb6: // MPR121_DOWN
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_DOWN;
e.kbchar = 0x00;
break;
case 0xb7: // MPR121_RIGHT
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_RIGHT;
e.kbchar = 0x00;
break;
case 0x1b: // MPR121_ESC
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_CANCEL;
e.kbchar = 0x1b;
break;
case 0x08: // MPR121_BSP
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_BACK;
e.kbchar = 0x08;
break;
case 0x0d: // MPR121_SELECT
e.inputEvent = meshtastic_ModuleConfig_CannedMessageConfig_InputEventChar_SELECT;
e.kbchar = 0x0d;
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("MP121 Notifying: %i Char: %i", e.inputEvent, e.kbchar);
this->notifyObservers(&e);
}
}
break;
}
case 0x02: {
// RAK14004
uint8_t rDataBuf[8] = {0};