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Use generic HID classes to minimize code duplic'n (#1254)

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Move the Joystick, Keyboard, and Mouse into a base class which handles
the operation/input, and a subclass which will implement the reporting
as a HID device via USB, Bluetooth Classic, or Bluetooth Low Energy (BLE).

Reduce copies of library code and makes maintainability much better.
This commit was merged in pull request #1254.
This commit is contained in:
Earle F. Philhower, III
2023-03-03 11:12:09 -08:00
committed by GitHub
parent 0be1d9c3ea
commit 7aa1c08d17
68 changed files with 1668 additions and 3108 deletions
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libraries/KeyboardBLE/src/KeyboardBLE.cpp
+1 -125
View File
@@ -29,8 +29,7 @@
// Keyboard
KeyboardBLE_::KeyboardBLE_(void) {
bzero(&_keyReport, sizeof(_keyReport));
_asciimap = KeyboardLayout_en_US;
// Base class clears the members we care about
}
#define REPORT_ID 0x01
@@ -57,127 +56,4 @@ void KeyboardBLE_::sendReport(KeyReport* keys) {
PicoBluetoothBLEHID.send(&data, sizeof(data));
}
// press() adds the specified key (printing, non-printing, or modifier)
// to the persistent key report and sends the report. Because of the way
// USB HID works, the host acts like the key remains pressed until we
// call release(), releaseAll(), or otherwise clear the report and resend.
size_t KeyboardBLE_::press(uint8_t k) {
uint8_t i;
if (k >= 136) { // it's a non-printing key (not a modifier)
k = k - 136;
} else if (k >= 128) { // it's a modifier key
_keyReport.modifiers |= (1 << (k - 128));
k = 0;
} else { // it's a printing key
k = pgm_read_byte(_asciimap + k);
if (!k) {
setWriteError();
return 0;
}
if ((k & ALT_GR) == ALT_GR) {
_keyReport.modifiers |= 0x40; // AltGr = right Alt
k &= 0x3F;
} else if ((k & SHIFT) == SHIFT) {
_keyReport.modifiers |= 0x02; // the left shift modifier
k &= 0x7F;
}
if (k == ISO_REPLACEMENT) {
k = ISO_KEY;
}
}
// Add k to the key report only if it's not already present
// and if there is an empty slot.
if (_keyReport.keys[0] != k && _keyReport.keys[1] != k &&
_keyReport.keys[2] != k && _keyReport.keys[3] != k &&
_keyReport.keys[4] != k && _keyReport.keys[5] != k) {
for (i = 0; i < 6; i++) {
if (_keyReport.keys[i] == 0x00) {
_keyReport.keys[i] = k;
break;
}
}
if (i == 6) {
setWriteError();
return 0;
}
}
sendReport(&_keyReport);
return 1;
}
// release() takes the specified key out of the persistent key report and
// sends the report. This tells the OS the key is no longer pressed and that
// it shouldn't be repeated any more.
size_t KeyboardBLE_::release(uint8_t k) {
uint8_t i;
if (k >= 136) { // it's a non-printing key (not a modifier)
k = k - 136;
} else if (k >= 128) { // it's a modifier key
_keyReport.modifiers &= ~(1 << (k - 128));
k = 0;
} else { // it's a printing key
k = pgm_read_byte(_asciimap + k);
if (!k) {
return 0;
}
if ((k & ALT_GR) == ALT_GR) {
_keyReport.modifiers &= ~(0x40); // AltGr = right Alt
k &= 0x3F;
} else if ((k & SHIFT) == SHIFT) {
_keyReport.modifiers &= ~(0x02); // the left shift modifier
k &= 0x7F;
}
if (k == ISO_REPLACEMENT) {
k = ISO_KEY;
}
}
// Test the key report to see if k is present. Clear it if it exists.
// Check all positions in case the key is present more than once (which it shouldn't be)
for (i = 0; i < 6; i++) {
if (0 != k && _keyReport.keys[i] == k) {
_keyReport.keys[i] = 0x00;
}
}
sendReport(&_keyReport);
return 1;
}
void KeyboardBLE_::releaseAll(void) {
_keyReport.keys[0] = 0;
_keyReport.keys[1] = 0;
_keyReport.keys[2] = 0;
_keyReport.keys[3] = 0;
_keyReport.keys[4] = 0;
_keyReport.keys[5] = 0;
_keyReport.modifiers = 0;
sendReport(&_keyReport);
}
size_t KeyboardBLE_::write(uint8_t c) {
uint8_t p = press(c); // Keydown
delay(10);
release(c); // Keyup
delay(10);
return p; // just return the result of press() since release() almost always returns 1
}
size_t KeyboardBLE_::write(const uint8_t *buffer, size_t size) {
size_t n = 0;
while (size--) {
if (*buffer != '\r') {
if (write(*buffer)) {
n++;
} else {
break;
}
}
buffer++;
}
return n;
}
KeyboardBLE_ KeyboardBLE;