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Add InkHUD driver for WeAct Studio 4.2" display module (#6384)

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* chore: todo.txt

* chore: InkHUD documentation
Word salad for maintainers

* refactor: don't init system applets using onActivate
System applets cannot be deactivated, so we will avoid using onActivate / onDeactivate methods entirely.

* chore: update the example applets

* fix: SSD16XX reset pulse
Allow time for controller IC to wake. Aligns with manufacturer's suggestions.
T-Echo button timing adjusted to prevent bouncing as a result(?) of slightly faster refreshes.

* fix: allow timeout if display update fails
Result is not graceful, but avoids total display lockup requiring power cycle.
Typical cause of failure is poor wiring / power supply.

* fix: improve display health on shutdown
Two extra full refreshes, masquerading as a "shutting down" screen. One is drawn white-on-black, to really shake the pixels up.

* feat: driver for display HINK_E042A87
As of Feb. 2025, these panels are used for "WeActStudio 4.2in B&W" display modules.

* fix: inkhud rotation should default to 0

* Revert "chore: todo.txt"

This reverts commit bea7df44a7cbf2f92e8c67c965e53d26a7885b11.

* fix: more generous timeout for display updates
Previously this was tied to the expected duration of the update, but this didn't account for any delay if our polling thread got held up by an unrelated firmware task.

* fix: don't use the full shutdown screen during reboot

* fix: cooldown period during the display shutdown display sequence
Observed to prevent border pixels from being locked in place with some residual charge?
This commit is contained in:
todd-herbert
2025-03-31 09:17:24 +02:00
committed by GitHub
co-authored by GitHub
parent da26ff5b95
commit bd2d2981c9
30 changed files with 945 additions and 88 deletions
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src/graphics/niche/InkHUD/Applet.cpp
+8 -8
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@@ -802,7 +802,7 @@ uint16_t InkHUD::Applet::getLogoHeight(uint16_t limitWidth, uint16_t limitHeight
// // \\
*/
void InkHUD::Applet::drawLogo(int16_t centerX, int16_t centerY, uint16_t width, uint16_t height)
void InkHUD::Applet::drawLogo(int16_t centerX, int16_t centerY, uint16_t width, uint16_t height, Color color)
{
struct Point {
int x;
@@ -908,24 +908,24 @@ void InkHUD::Applet::drawLogo(int16_t centerX, int16_t centerY, uint16_t width,
Point aq2{a2.x - fromPath.x, a2.y - fromPath.y};
Point aq3{a2.x + fromPath.x, a2.y + fromPath.y};
Point aq4{a1.x + fromPath.x, a1.y + fromPath.y};
fillTriangle(aq1.x, aq1.y, aq2.x, aq2.y, aq3.x, aq3.y, BLACK);
fillTriangle(aq1.x, aq1.y, aq3.x, aq3.y, aq4.x, aq4.y, BLACK);
fillTriangle(aq1.x, aq1.y, aq2.x, aq2.y, aq3.x, aq3.y, color);
fillTriangle(aq1.x, aq1.y, aq3.x, aq3.y, aq4.x, aq4.y, color);
// Make the path thick: path b becomes quad b
Point bq1{b1.x - fromPath.x, b1.y - fromPath.y};
Point bq2{b2.x - fromPath.x, b2.y - fromPath.y};
Point bq3{b2.x + fromPath.x, b2.y + fromPath.y};
Point bq4{b1.x + fromPath.x, b1.y + fromPath.y};
fillTriangle(bq1.x, bq1.y, bq2.x, bq2.y, bq3.x, bq3.y, BLACK);
fillTriangle(bq1.x, bq1.y, bq3.x, bq3.y, bq4.x, bq4.y, BLACK);
fillTriangle(bq1.x, bq1.y, bq2.x, bq2.y, bq3.x, bq3.y, color);
fillTriangle(bq1.x, bq1.y, bq3.x, bq3.y, bq4.x, bq4.y, color);
// Make the path thick: path c becomes quad c
Point cq1{c1.x - fromPath.x, c1.y + fromPath.y};
Point cq2{c2.x - fromPath.x, c2.y + fromPath.y};
Point cq3{c2.x + fromPath.x, c2.y - fromPath.y};
Point cq4{c1.x + fromPath.x, c1.y - fromPath.y};
fillTriangle(cq1.x, cq1.y, cq2.x, cq2.y, cq3.x, cq3.y, BLACK);
fillTriangle(cq1.x, cq1.y, cq3.x, cq3.y, cq4.x, cq4.y, BLACK);
fillTriangle(cq1.x, cq1.y, cq2.x, cq2.y, cq3.x, cq3.y, color);
fillTriangle(cq1.x, cq1.y, cq3.x, cq3.y, cq4.x, cq4.y, color);
// Radius the intersection of quad b and quad c
/*
@@ -944,7 +944,7 @@ void InkHUD::Applet::drawLogo(int16_t centerX, int16_t centerY, uint16_t width,
// The radius for the cap *should* be the same as logoTh, but it's not, due to accumulated rounding
// We get better results just re-deriving it
int16_t capRad = sqrt(pow(fromPath.x, 2) + pow(fromPath.y, 2));
fillCircle(b2.x, b2.y, capRad, BLACK);
fillCircle(b2.x, b2.y, capRad, color);
}
}