597f6767b5
* Add Elecrow ThinkNode M8 variant scaffold (thinknode_m8) nRF52840 + SX1262 + 2.4" e-paper + ATGM336H-5NR32 GPS. All pins resolved from ThinkNode_M8_V0.3.sch; cross-checked against meshtastic/firmware#9181 (Elecrow V0.1 reference). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * Add Elecrow ThinkNode M8 board support (nRF52840/SX1262, 1.54in e-ink, ATGM336H GNSS, SC7A20, EC04 encoder) * Address review: keep the stored backlight level out of blanking, match only the SC7A20 WHO_AM_I byte, and transfer detents atomically * Use std::atomic for the press-and-turn detent counter so native builds compile * Drop the ThinkNode M8 LED_BUILTIN redefinition that warned on every translation unit --------- Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com> Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
72 lines
1.4 KiB
C++
72 lines
1.4 KiB
C++
#include "graphics/Backlight.h"
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#if HAS_PWM_BACKLIGHT
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#include "mesh/NodeDB.h"
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namespace graphics
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{
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namespace
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{
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bool pinConfigured = false;
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// Level restored when the backlight is switched back on after being toggled off.
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uint8_t lastOnLevel = PWM_BACKLIGHT_DEFAULT;
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void drive(uint8_t level)
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{
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if (!pinConfigured) {
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pinMode(PIN_PWM_BACKLIGHT, OUTPUT);
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pinConfigured = true;
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}
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analogWrite(PIN_PWM_BACKLIGHT, level);
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}
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} // namespace
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void backlightSet(uint8_t level)
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{
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if (level > 0)
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lastOnLevel = level;
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uiconfig.screen_brightness = level;
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drive(level);
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}
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uint8_t backlightGet()
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{
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return uiconfig.screen_brightness;
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}
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void backlightOn()
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{
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drive(uiconfig.screen_brightness);
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}
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void backlightOff()
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{
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drive(0);
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}
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void backlightToggle()
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{
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backlightSet(uiconfig.screen_brightness > 0 ? 0 : lastOnLevel);
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}
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void backlightStepUp()
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{
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uint16_t raised = (uint16_t)uiconfig.screen_brightness + PWM_BACKLIGHT_STEP;
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backlightSet(raised > PWM_BACKLIGHT_MAX ? PWM_BACKLIGHT_MAX : (uint8_t)raised);
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}
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void backlightStepDown()
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{
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// Leave an off backlight off; otherwise clamp at the minimum.
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if (uiconfig.screen_brightness == 0)
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return;
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backlightSet(uiconfig.screen_brightness <= PWM_BACKLIGHT_MIN + PWM_BACKLIGHT_STEP
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? PWM_BACKLIGHT_MIN
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: uiconfig.screen_brightness - PWM_BACKLIGHT_STEP);
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}
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} // namespace graphics
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#endif // HAS_PWM_BACKLIGHT
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