Ken Van Hoeylandt
38 lines
1.7 KiB
C
38 lines
1.7 KiB
C
#pragma once
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struct Device;
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enum class Tab5Variant {
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Unknown,
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V1, // Older variant: ILI9881C display + GT911 touch (see devices_v1.cpp)
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V2, // Newer variant (default): ST7123 display + in-cell touch (see devices_v2.cpp)
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};
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// Populated once the device_listener callback in display_detect.cpp has detected which
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// panel/touch variant is present (gated on i2c0 + io_expander0 both reaching
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// DEVICE_EVENT_STARTED). Safe to call from Configuration.cpp's createDevices()/createTouch():
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// kernel_init() (which runs the listener to completion) always finishes before hal::init()
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// invokes createDevices().
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[[nodiscard]] Tab5Variant tab5_get_variant();
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// Registers/unregisters the device_listener (display_detect.cpp) that detects the display/touch
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// variant, keyboard and power control devices and dynamically constructs them. Called from
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// module.cpp's start()/stop().
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void tab5_detect_start();
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void tab5_detect_stop();
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// --- detect.cpp internals, exposed only for display_detect.cpp's on_display_detect_event() ---
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// Records the variant found by probe_variant() below - the only writer of the state
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// getDetectedTab5Variant() reads.
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void tab5_set_variant(Tab5Variant variant);
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// Pulses only the LCD + touch reset bits on io_expander0 (see the pinout table in
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// Configuration.cpp). The other io_expander0 pins (speaker enable, RF switch, 5V bus, camera
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// reset) are unrelated to display bring-up and stay owned by Configuration.cpp's initExpander0().
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bool pulse_display_reset_pins(Device* io_expander0);
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// Probes i2c0 for a known touch controller address to determine which display/touch variant is
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// present. Must be called after pulse_display_reset_pins().
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Tab5Variant tab5_probe_variant(Device* i2c0);
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