Allow multiple process_record() calls per scan
This is particularly relevant for, e.g., the ergodox EZ and other keyboards with slow scan rates. Without changing the API or behavior of individual process_record() calls, we allow a configuration flag to make multiple calls in a single scan. This will probably have miniscule effects on non-steno users, and it's not enabled by default for any keyboards. Added note about it to ergodox README. Signed-off-by: seebs <seebs@seebs.net>
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@ -123,6 +123,15 @@ If you define these options you will enable the associated feature, which may in
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* how many taps before oneshot toggle is triggered
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* `#define IGNORE_MOD_TAP_INTERRUPT`
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* makes it possible to do rolling combos (zx) with keys that convert to other keys on hold
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* `#define QMK_KEYS_PER_SCAN 4`
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* Allows sending more than one key per scan. By default, only one key event gets
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sent via `process_record()` per scan. This has little impact on most typing, but
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if you're doing a lot of chords, or your scan rate is slow to begin with, you can
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have some delay in processing key events. Each press and release is a separate
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event. For a keyboard with 1ms or so scan times, even a very fast typist isn't
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going to produce the 500 keystrokes a second needed to actually get more than a
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few ms of delay from this. But if you're doing chording on something with 3-4ms
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scan times? You probably want this.
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### RGB Light Configuration
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@ -31,3 +31,8 @@ To flash with ´teensy-loader-cli´:
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- Press the Reset button by inserting a paperclip gently into the reset hole
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in the top right corder.
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## Settings
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You may want to enable QMK_KEYS_PER_SCAN because the Ergodox has a relatively
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slow scan rate.
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@ -177,6 +177,9 @@ void keyboard_task(void)
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static uint8_t led_status = 0;
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matrix_row_t matrix_row = 0;
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matrix_row_t matrix_change = 0;
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#ifdef QMK_KEYS_PER_SCAN
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uint8_t keys_processed = 0;
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#endif
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matrix_scan();
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if (is_keyboard_master()) {
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@ -208,6 +211,10 @@ void keyboard_task(void)
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});
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// record a processed key
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matrix_prev[r] ^= ((matrix_row_t)1<<c);
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#ifdef QMK_KEYS_PER_SCAN
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// only jump out if we have processed "enough" keys.
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if (++keys_processed >= QMK_KEYS_PER_SCAN)
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#endif
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// process a key per task call
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goto MATRIX_LOOP_END;
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}
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@ -216,6 +223,10 @@ void keyboard_task(void)
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}
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}
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// call with pseudo tick event when no real key event.
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#ifdef QMK_KEYS_PER_SCAN
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// we can get here with some keys processed now.
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if (!keys_processed)
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#endif
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action_exec(TICK);
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MATRIX_LOOP_END:
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