65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
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/*******************************************************************************
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* Keyboard libraries:
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* M5Stack CardKB: no extra libraries required
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https://github.com/solderparty/arduino_bbq10kbd
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******************************************************************************/
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/* uncomment for M5Stack CardKB */
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// #define KEYBOARD_CARDKB
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// #define KEYBOARD_CARDKB_SDA 19
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// #define KEYBOARD_CARDKB_SCL 20
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// #define KEYBOARD_CARDKB_I2C_ADDR 0x5f
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/* uncomment for BBQKeyboard */
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// #define KEYBOARD_BBQKB
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// #define KEYBOARD_BBQKB_SDA 21
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// #define KEYBOARD_BBQKB_SCL 22
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#if defined(KEYBOARD_CARDKB)
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#include <Wire.h>
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#elif defined(KEYBOARD_BBQKB)
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#include <Wire.h>
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#include <BBQ10Keyboard.h>
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BBQ10Keyboard keyboard;
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#endif
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void keyboard_init() {
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#if defined(KEYBOARD_CARDKB)
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Wire1.begin(KEYBOARD_CARDKB_SDA, KEYBOARD_CARDKB_SCL);
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#elif defined(KEYBOARD_BBQKB)
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Wire1.begin(KEYBOARD_BBQKB_SDA, KEYBOARD_BBQKB_SCL);
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keyboard.begin();
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keyboard.setBacklight(0.5f);
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#endif
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}
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char keyboard_get_key() {
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#if defined(KEYBOARD_CARDKB)
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uint8_t bytesReceived = Wire1.requestFrom(KEYBOARD_CARDKB_I2C_ADDR, 1);
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if ((bool)bytesReceived) { //If received more than zero bytes
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return Wire1.read();
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} else {
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return 0;
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}
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#elif defined(KEYBOARD_BBQKB)
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const int keyCount = keyboard.keyCount();
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if (keyCount > 0) {
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const BBQ10Keyboard::KeyEvent key = keyboard.keyEvent();
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String state = "pressed";
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if (key.state == BBQ10Keyboard::StateLongPress)
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state = "held down";
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else if (key.state == BBQ10Keyboard::StateRelease)
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state = "released";
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Serial.printf("key: '%c' (dec %d, hex %02x) %s\r\n", key.key, key.key, key.key, state.c_str());
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if ((key.key != 0) && (key.state != BBQ10Keyboard::StateRelease)) {
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return key.key;
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} else {
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return 0;
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}
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} else {
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return 0;
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}
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#endif
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}
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