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perf: Unroll display update loop to prevent blocking the main logic.

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This commit is contained in:
Adam Wonak
2026-03-09 22:18:07 -07:00
parent a2ad5d244e
commit 10d19a5e58
1 changed files with 26 additions and 18 deletions
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40
firmware/Comparator/Comparator.ino
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@ -36,7 +36,6 @@ int comp1_size = 512; // Range: 0 to 1024
int comp2_shift = 0; // Range: -512 to 512
int comp2_size = 512; // Range: 0 to 1024
// State
bool prev_gate1 = false;
bool prev_gate2 = false;
bool ff_state = false;
@ -356,7 +355,8 @@ void loop() {
gate1 = false;
}
} else {
if (cv1_val >= c1_lower + HYSTERESIS && cv1_val <= c1_upper - HYSTERESIS) {
if (cv1_val >= c1_lower + HYSTERESIS &&
cv1_val <= c1_upper - HYSTERESIS) {
gate1 = true;
}
}
@ -367,7 +367,8 @@ void loop() {
gate2 = false;
}
} else {
if (cv2_val >= c2_lower + HYSTERESIS && cv2_val <= c2_upper - HYSTERESIS) {
if (cv2_val >= c2_lower + HYSTERESIS &&
cv2_val <= c2_upper - HYSTERESIS) {
gate2 = true;
}
}
@ -399,29 +400,36 @@ void loop() {
}
if (current_mode == MODE_COMPARATOR) {
if (abs(cv1_val - last_cv1_draw) > 12 || abs(cv2_val - last_cv2_draw) > 12) {
if (abs(cv1_val - last_cv1_draw) > 12 ||
abs(cv2_val - last_cv2_draw) > 12) {
needs_redraw = true;
}
} else if (current_mode == MODE_CALIBRATION) {
// Need frequent redraws in calibration to see the live target input
if (abs(cv1_val - last_cv1_draw) >= 2 || abs(cv2_val - last_cv2_draw) >= 2) {
if (abs(cv1_val - last_cv1_draw) >= 2 ||
abs(cv2_val - last_cv2_draw) >= 2) {
needs_redraw = true;
}
}
// Cap framerate so display I2C calls do not block gate loop
if (needs_redraw && (millis() - last_redraw >= 30)) {
// Unroll the display loop so it doesn't block the logic loop
static bool is_drawing = false;
if (needs_redraw && !is_drawing && (millis() - last_redraw >= 30)) {
needs_redraw = false;
is_drawing = true;
last_redraw = millis();
gravity.display.firstPage();
do {
if (current_mode == MODE_COMPARATOR) {
last_cv1_draw = cv1_val;
last_cv2_draw = cv2_val;
UpdateDisplay(cv1_val, cv2_val);
} else {
UpdateCalibrationDisplay();
}
} while (gravity.display.nextPage());
}
if (is_drawing) {
if (current_mode == MODE_COMPARATOR) {
last_cv1_draw = cv1_val;
last_cv2_draw = cv2_val;
UpdateDisplay(cv1_val, cv2_val);
} else {
UpdateCalibrationDisplay();
}
is_drawing = gravity.display.nextPage();
}
}