diff options
Diffstat (limited to 'shared-module/displayio/Display.c')
| -rw-r--r-- | shared-module/displayio/Display.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/shared-module/displayio/Display.c b/shared-module/displayio/Display.c index fd082c19d..504f130c7 100644 --- a/shared-module/displayio/Display.c +++ b/shared-module/displayio/Display.c @@ -29,6 +29,7 @@ #include "py/runtime.h" #include "shared-bindings/displayio/FourWire.h" #include "shared-bindings/displayio/ParallelBus.h" +#include "shared-bindings/microcontroller/Pin.h" #include "shared-bindings/time/__init__.h" #include "shared-module/displayio/__init__.h" #include "supervisor/shared/display.h" @@ -42,7 +43,8 @@ void common_hal_displayio_display_construct(displayio_display_obj_t* self, mp_obj_t bus, uint16_t width, uint16_t height, int16_t colstart, int16_t rowstart, uint16_t color_depth, uint8_t set_column_command, uint8_t set_row_command, - uint8_t write_ram_command, uint8_t* init_sequence, uint16_t init_sequence_len) { + uint8_t write_ram_command, uint8_t* init_sequence, uint16_t init_sequence_len, + const mcu_pin_obj_t* backlight_pin) { self->width = width; self->height = height; self->color_depth = color_depth; @@ -96,6 +98,19 @@ void common_hal_displayio_display_construct(displayio_display_obj_t* self, // initialization. self->refresh = true; self->current_group = &circuitpython_splash; + + if (backlight_pin != NULL && common_hal_mcu_pin_is_free(backlight_pin)) { + pwmout_result_t result = common_hal_pulseio_pwmout_construct(&self->backlight_pwm, backlight_pin, 0, 5000, false); + if (result != PWMOUT_OK) { + self->backlight_inout.base.type = &digitalio_digitalinout_type; + common_hal_digitalio_digitalinout_construct(&self->backlight_inout, backlight_pin); + never_reset_pin_number(backlight_pin->number); + } else { + self->backlight_pwm.base.type = &pulseio_pwmout_type; + common_hal_pulseio_pwmout_never_reset(&self->backlight_pwm); + } + } + self->auto_brightness = true; } void common_hal_displayio_display_show(displayio_display_obj_t* self, displayio_group_t* root_group) { @@ -158,3 +173,29 @@ bool displayio_display_send_pixels(displayio_display_obj_t* self, uint32_t* pixe self->send(self->bus, false, (uint8_t*) pixels, length * 4); return true; } + +void displayio_display_update_backlight(displayio_display_obj_t* self) { + if (!self->auto_brightness || self->updating_backlight) { + return; + } + if (ticks_ms - self->last_backlight_refresh < 100) { + return; + } + self->updating_backlight = true; + if (self->backlight_pwm.base.type == &pulseio_pwmout_type) { + common_hal_pulseio_pwmout_set_duty_cycle(&self->backlight_pwm, 0xffff); + } else if (self->backlight_inout.base.type == &digitalio_digitalinout_type) { + common_hal_digitalio_digitalinout_set_value(&self->backlight_inout, true); + } + self->updating_backlight = false; + self->last_backlight_refresh = ticks_ms; +} + +void release_display(displayio_display_obj_t* self) { + if (self->backlight_pwm.base.type == &pulseio_pwmout_type) { + common_hal_pulseio_pwmout_reset_ok(&self->backlight_pwm); + common_hal_pulseio_pwmout_deinit(&self->backlight_pwm); + } else if (self->backlight_inout.base.type == &digitalio_digitalinout_type) { + common_hal_digitalio_digitalinout_deinit(&self->backlight_inout); + } +} |