128 lines
4.3 KiB
C
128 lines
4.3 KiB
C
#include "display.h"
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#include <inttypes.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/semphr.h"
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#include "unity.h"
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#include "unity_test_runner.h"
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#include "esp_log.h"
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#include "driver/gpio.h"
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#include "hal/spi_types.h"
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#include "esp_lcd_panel_ops.h"
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#include "driver/spi_common.h"
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#include "esp_lcd_panel_io.h"
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#include "esp_lcd_panel_commands.h"
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#include "esp_lcd_ili9341.h"
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SemaphoreHandle_t refresh_finish = NULL;
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static const char * TAG = "spincoat-plater-firmware/display";
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/**
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* Callback for the TFT LCD, notifying when the screen is ready for another chunk of data and
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* releasing the drawing semaphore.
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*/
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IRAM_ATTR static bool notify_refresh_ready(esp_lcd_panel_io_handle_t panel_io, esp_lcd_panel_io_event_data_t *edata, void *user_ctx)
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{
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BaseType_t need_yield = pdFALSE;
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xSemaphoreGiveFromISR(refresh_finish, &need_yield);
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return (need_yield == pdTRUE);
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}
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/**
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* Draws a test bitmap of stripes of colors to the LCD.
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*/
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void test_draw_bitmap(esp_lcd_panel_handle_t panel_handle)
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{
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refresh_finish = xSemaphoreCreateBinary();
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TEST_ASSERT_NOT_NULL(refresh_finish);
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uint16_t row_line = TFT_VRES / TFT_BPP;
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uint8_t byte_per_pixel = TFT_BPP / 8;
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uint8_t *color = (uint8_t *)heap_caps_calloc(1, row_line * TFT_VRES * byte_per_pixel, MALLOC_CAP_DMA);
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TEST_ASSERT_NOT_NULL(color);
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for (int j = 0; j < TFT_BPP; j++) {
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for (int i = 0; i < row_line * TFT_HRES ; i++) {
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for (int k = 0; k < byte_per_pixel; k++) {
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color[i * byte_per_pixel + k] = (SPI_SWAP_DATA_TX(BIT(j), TFT_BPP) >> (k * 8)) & 0xff;
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}
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}
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TEST_ESP_OK(esp_lcd_panel_draw_bitmap(panel_handle, 0, j * row_line, TFT_HRES , (j + 1) * row_line, color));
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xSemaphoreTake(refresh_finish, portMAX_DELAY);
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}
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free(color);
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vSemaphoreDelete(refresh_finish);
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}
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/**
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* Initializes the SPI LCD in preparation for writing graphics to it.
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*/
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void init_spi_lcd(void) {
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ESP_LOGI(TAG, "Turn on backlight");
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gpio_config_t io_conf = {
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.pin_bit_mask = (1ULL << GPIO_TFT_BL),
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.mode = GPIO_MODE_OUTPUT,
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.pull_up_en = GPIO_PULLUP_ENABLE,
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.pull_down_en = GPIO_PULLDOWN_DISABLE,
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.intr_type = GPIO_INTR_DISABLE
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};
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gpio_config(&io_conf);
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gpio_set_level(GPIO_TFT_BL, 1);
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ESP_LOGI(TAG, "Initialize SPI bus");
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const spi_bus_config_t bus_config = ILI9341_PANEL_BUS_SPI_CONFIG(GPIO_TFT_SCKL,
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GPIO_TFT_MOSI, TFT_HRES * 80 * TFT_BPP / 8);
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TEST_ESP_OK(spi_bus_initialize(LCD_SPI_HOST, &bus_config, SPI_DMA_CH_AUTO));
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ESP_LOGI(TAG, "Install panel IO");
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esp_lcd_panel_io_handle_t io_handle = NULL;
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const esp_lcd_panel_io_spi_config_t io_config = ILI9341_PANEL_IO_SPI_CONFIG(GPIO_TFT_CS, GPIO_TFT_DC,
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notify_refresh_ready, NULL);
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TEST_ESP_OK(esp_lcd_new_panel_io_spi((esp_lcd_spi_bus_handle_t)LCD_SPI_HOST, &io_config, &io_handle));
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ESP_LOGI(TAG, "Install ili9341 panel driver");
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esp_lcd_panel_handle_t panel_handle = NULL;
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const esp_lcd_panel_dev_config_t panel_config = {
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.reset_gpio_num = -1, // Shared with Touch reset
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#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
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.color_space = ESP_LCD_COLOR_SPACE_BGR,
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#elif ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(6, 0, 0)
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.rgb_endian = LCD_RGB_ENDIAN_BGR,
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#else
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.rgb_ele_order = LCD_RGB_ELEMENT_ORDER_BGR,
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#endif
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.bits_per_pixel = TFT_BPP,
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};
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TEST_ESP_OK(esp_lcd_new_panel_ili9341(io_handle, &panel_config, &panel_handle));
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TEST_ESP_OK(esp_lcd_panel_reset(panel_handle));
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TEST_ESP_OK(esp_lcd_panel_init(panel_handle));
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TEST_ESP_OK(esp_lcd_panel_mirror(panel_handle, true, true));
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#if ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(5, 0, 0)
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TEST_ESP_OK(esp_lcd_panel_disp_off(panel_handle, false));
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#else
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TEST_ESP_OK(esp_lcd_panel_disp_on_off(panel_handle, true));
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#endif
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ESP_LOGI(TAG, "Finished init of spi LCD.");
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ESP_LOGI(TAG, "Drawing bitmap.");;
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test_draw_bitmap(panel_handle);
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vTaskDelay(pdMS_TO_TICKS(3000));
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// Tear it back down, move this into a function to clean up after ourselves if it's ever needed.
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ESP_LOGI(TAG, "Destroying and cleaning up LCD/SPI handles.");
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gpio_reset_pin(GPIO_TFT_BL);
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TEST_ESP_OK(esp_lcd_panel_del(panel_handle));
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TEST_ESP_OK(esp_lcd_panel_io_del(io_handle));
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TEST_ESP_OK(spi_bus_free(LCD_SPI_HOST));
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}
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