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bd2d2981c9
* 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 bea7df44a7.
* 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?
58 lines
1.9 KiB
C++
58 lines
1.9 KiB
C++
#include "./HINK_E042A87.h"
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#ifdef MESHTASTIC_INCLUDE_NICHE_GRAPHICS
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using namespace NicheGraphics::Drivers;
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// Load settings about how the pixels are moved from old state to new state during a refresh
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// - manually specified,
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// - or with stored values from displays OTP memory
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void HINK_E042A87::configWaveform()
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{
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sendCommand(0x3C); // Border waveform:
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sendData(0x01); // Follow LUT for VSH1
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sendCommand(0x18); // Temperature sensor:
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sendData(0x80); // Use internal temperature sensor to select an appropriate refresh waveform
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}
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// Describes the sequence of events performed by the displays controller IC during a refresh
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// Includes "power up", "load settings from memory", "update the pixels", etc
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void HINK_E042A87::configUpdateSequence()
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{
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switch (updateType) {
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case FAST:
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sendCommand(0x21); // Use both "old" and "new" image memory (differential)
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sendData(0x00);
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sendData(0x00);
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sendCommand(0x22); // Set "update sequence"
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sendData(0xFF); // Differential, load waveform from OTP
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break;
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case FULL:
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default:
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sendCommand(0x21); // Bypass "old" image memory (non-differential)
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sendData(0x40);
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sendData(0x00);
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sendCommand(0x22); // Set "update sequence":
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sendData(0xF7); // Non-differential, load waveform from OTP
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break;
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}
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}
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// Once the refresh operation has been started,
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// begin periodically polling the display to check for completion, using the normal Meshtastic threading code
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// Only used when refresh is "async"
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void HINK_E042A87::detachFromUpdate()
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{
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switch (updateType) {
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case FAST:
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return beginPolling(50, 1000); // At least 1 second, then check every 50ms
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case FULL:
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default:
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return beginPolling(100, 3500); // At least 3.5 seconds, then check every 100ms
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}
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}
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#endif // MESHTASTIC_INCLUDE_NICHE_GRAPHICS
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