From c247e7df9c043dc6a452a6cabc7bf232c0e9e085 Mon Sep 17 00:00:00 2001 From: Scott Shawcroft Date: Wed, 14 Aug 2019 14:17:35 -0700 Subject: Begin refresh rework. --- shared-module/displayio/EPaperDisplay.c | 71 +++++++++++++++++++++++++-------- 1 file changed, 54 insertions(+), 17 deletions(-) (limited to 'shared-module/displayio/EPaperDisplay.c') diff --git a/shared-module/displayio/EPaperDisplay.c b/shared-module/displayio/EPaperDisplay.c index 5e4bdc340..434adbdf4 100644 --- a/shared-module/displayio/EPaperDisplay.c +++ b/shared-module/displayio/EPaperDisplay.c @@ -48,7 +48,7 @@ void common_hal_displayio_epaperdisplay_construct(displayio_epaperdisplay_obj_t* int16_t colstart, int16_t rowstart, uint16_t rotation, uint16_t set_column_window_command, uint16_t set_row_window_command, uint16_t set_current_column_command, uint16_t set_current_row_command, - uint16_t write_black_ram_command, bool black_bits_inverted, uint16_t write_color_ram_command, bool color_bits_inverted, uint32_t third_color, uint16_t refresh_display_command, + uint16_t write_black_ram_command, bool black_bits_inverted, uint16_t write_color_ram_command, bool color_bits_inverted, uint32_t highlight_color, uint16_t refresh_display_command, const mcu_pin_obj_t* busy_pin, bool busy_state, mp_float_t seconds_per_frame, bool always_toggle_chip_select) { self->colorspace.depth = 1; self->colorspace.grayscale = true; @@ -56,10 +56,10 @@ void common_hal_displayio_epaperdisplay_construct(displayio_epaperdisplay_obj_t* self->colorspace.bytes_per_cell = 1; self->colorspace.reverse_pixels_in_byte = true; - if (third_color != 0x000000) { + if (highlight_color != 0x000000) { self->colorspace.tricolor = true; - self->colorspace.tricolor_hue = displayio_colorconverter_compute_hue(third_color); - self->colorspace.tricolor_luma = displayio_colorconverter_compute_luma(third_color); + self->colorspace.tricolor_hue = displayio_colorconverter_compute_hue(highlight_color); + self->colorspace.tricolor_luma = displayio_colorconverter_compute_luma(highlight_color); } self->set_column_window_command = set_column_window_command; @@ -174,6 +174,11 @@ void common_hal_displayio_epaperdisplay_construct(displayio_epaperdisplay_obj_t* never_reset_pin_number(busy_pin->number); } + // Clear the color memory if it isn't in use. + if (highlight_color == 0x00 && write_color_ram_command != NO_COMMAND) { + // TODO: Clear + } + // Set the group after initialization otherwise we may send pixels while we delay in // initialization. common_hal_displayio_epaperdisplay_show(self, &circuitpython_splash); @@ -198,14 +203,9 @@ bool common_hal_displayio_epaperdisplay_show(displayio_epaperdisplay_obj_t* self self->current_group = root_group; } self->full_refresh = true; - common_hal_displayio_epaperdisplay_refresh_soon(self); return true; } -void common_hal_displayio_epaperdisplay_refresh_soon(displayio_epaperdisplay_obj_t* self) { - self->refresh = true; -} - const displayio_area_t* displayio_epaperdisplay_get_refresh_areas(displayio_epaperdisplay_obj_t *self) { const displayio_area_t* first_area; if (self->current_group == NULL || self->current_group->base.type != &displayio_group_type) { @@ -359,21 +359,23 @@ void displayio_epaperdisplay_start_refresh(displayio_epaperdisplay_obj_t* self) self->last_refresh = ticks_ms; } -bool displayio_epaperdisplay_frame_queued(displayio_epaperdisplay_obj_t* self) { +void displayio_epaperdisplay_background_task(displayio_epaperdisplay_obj_t* self) { if (self->refreshing && self->busy.base.type == &digitalio_digitalinout_type) { if (common_hal_digitalio_digitalinout_get_value(&self->busy) != self->busy_state) { self->refreshing = false; // Run stop sequence but don't wait for busy because busy is set when sleeping. send_command_sequence(self, false, self->stop_sequence, self->stop_sequence_len); - } else { - return false; } } - if (self->current_group == NULL) { - return false; - } +} + +uint32_t common_hal_displayio_epaperdisplay_get_time_to_refresh(displayio_epaperdisplay_obj_t* self) { // Refresh at seconds per frame rate. - return (ticks_ms - self->last_refresh) > self->milliseconds_per_frame; + uint32_t elapsed_time = ticks_ms - self->last_refresh; + if (elapsed_time > self->milliseconds_per_frame) { + return 0; + } + return self->milliseconds_per_frame - elapsed_time; } void displayio_epaperdisplay_finish_refresh(displayio_epaperdisplay_obj_t* self) { @@ -394,7 +396,6 @@ void displayio_epaperdisplay_finish_refresh(displayio_epaperdisplay_obj_t* self) void displayio_epaperdisplay_send_pixels(displayio_epaperdisplay_obj_t* self, uint8_t* pixels, uint32_t length) { } - bool displayio_epaperdisplay_refresh_area(displayio_epaperdisplay_obj_t* self, const displayio_area_t* area) { uint16_t buffer_size = 128; // In uint32_ts @@ -500,6 +501,42 @@ bool displayio_epaperdisplay_refresh_area(displayio_epaperdisplay_obj_t* self, c return true; } +bool common_hal_displayio_epaperdisplay_refresh(displayio_epaperdisplay_obj_t* self) { + + if (self->refreshing && self->busy.base.type == &digitalio_digitalinout_type) { + if (common_hal_digitalio_digitalinout_get_value(&self->busy) != self->busy_state) { + self->refreshing = false; + // Run stop sequence but don't wait for busy because busy is set when sleeping. + send_command_sequence(self, false, self->stop_sequence, self->stop_sequence_len); + } else { + return false; + } + } + if (self->current_group == NULL) { + return false; + } + // Refresh at seconds per frame rate. + if (ticks_ms - self->last_refresh) > self->milliseconds_per_frame; + + if (displayio_epaperdisplay_get_time_to_refresh(display) > 0) { + return false; + } + if (!displayio_epaperdisplay_bus_free(display)) { + // Can't acquire display bus; skip updating this display. Try next display. + continue; + } + const displayio_area_t* current_area = displayio_epaperdisplay_get_refresh_areas(display); + if (current_area == NULL) { + continue; + } + displayio_epaperdisplay_start_refresh(display); + while (current_area != NULL) { + displayio_epaperdisplay_refresh_area(display, current_area); + current_area = current_area->next; + } + displayio_epaperdisplay_finish_refresh(display); +} + void release_epaperdisplay(displayio_epaperdisplay_obj_t* self) { if (self->current_group != NULL) { self->current_group->in_group = false; -- cgit v1.2.3