Weather_ESP/components/display/display.c

/*
 * display.c
 *
 *  Created on: 19 Apr 2020
 *      Author: Chris
 */

#include "display.h"

#include "tftspi.h"
#include "tft.h"

#define SPI_BUS TFT_VSPI_HOST

typedef struct {
	int datetimeW;
	int datetimeA;
	int dateTimeLeft;
	int datetimeBaseline;
	int innenW;
	int aussenW;
	int locA;
	int tempW;
	int degCW;
	int tempA;
	int humW;
	int percentW;
	int humA;
	int pressW;
	int pressA;
	int hpaW;
	int datetimebarH;
	int margin;
	int borderVMargin;
	int innenBaseline;
	int aussenBaseline;
	int pressBaseline;
	int humBaseline;
	int tempBaseline;
	int unitMaxW;
	int unitW;
	int ioW;
	int unitLeft;
	int innenLeft;
	int aussenLeft;
} layout_t;

static layout_t layout;

layout_t create_layout()
{
	layout_t layout;
	int screenW = tft_width;
	int screenH = tft_height;
	layout.datetimebarH = 20; // Can be calculated too
	layout.margin = 5;
	layout.borderVMargin = 10;

	TFT_setFont(UBUNTU16_FONT, NULL);
	layout.datetimebarH = 20;
	layout.datetimeW = TFT_getStringWidth("25.12.2031   08:31");
	layout.datetimeA = TFT_getfontheight();
	layout.dateTimeLeft = (screenW - layout.datetimeW) / 2;
	layout.datetimeBaseline = (layout.datetimebarH - layout.datetimeA) / 2;

	layout.innenW = TFT_getStringWidth("Innen");
	layout.aussenW = TFT_getStringWidth("Außen");
	layout.locA = TFT_getfontheight();

	TFT_setFont(DEJAVU18_FONT, NULL);
	layout.tempW = TFT_getStringWidth("-35.2");
	layout.degCW = TFT_getStringWidth(" C");
	layout.tempA = TFT_getfontheight();

	TFT_setFont(UBUNTU16_FONT, NULL);
	layout.humW = TFT_getStringWidth("25.2");
	layout.percentW = TFT_getStringWidth("%");
	layout.humA = TFT_getfontheight();

	layout.pressW = TFT_getStringWidth("1281");
	layout.pressA = TFT_getfontheight();
	layout.hpaW = TFT_getStringWidth("hPa");

	layout.innenBaseline = layout.datetimebarH + layout.borderVMargin;
	layout.aussenBaseline = layout.innenBaseline;
	layout.pressBaseline = screenH - layout.borderVMargin - layout.pressA;
	layout.humBaseline = layout.pressBaseline - layout.pressA - layout.margin;
	layout.tempBaseline =  (layout.humBaseline - layout.humA + layout.innenBaseline) / 2
			+ 0.5*layout.tempA - 1;

	int unitMaxW = layout.degCW;
	if (layout.percentW > unitMaxW) unitMaxW = layout.percentW;
	if (layout.hpaW > unitMaxW) unitMaxW = layout.hpaW;
	layout.unitW = 2*layout.margin + unitMaxW;
	layout.ioW = (screenW - layout.unitW) / 2;
	layout.unitLeft = screenW - layout.unitW + layout.margin;
	layout.innenLeft = layout.margin;
	layout.aussenLeft = layout.innenLeft + layout.ioW;

	ESP_LOGI("main", "innen: %d x %d, aussen: %d x %d", layout.innenW,
			layout.locA, layout.aussenW, layout.locA);
	ESP_LOGI("main", "temps: %d x %d, unit: %d x %d", layout.tempW,
			layout.tempA, layout.degCW, layout.tempA);
	ESP_LOGI("main", "hum: %d x %d, unit: %d x %d", layout.humW, layout.humA,
			layout.percentW, layout.humA);
	ESP_LOGI("main", "press: %d x %d, unit: %d x %d", layout.pressW, layout.pressA,
			layout.hpaW, layout.pressA);

	ESP_LOGI("main", "Baselines - innen: %d, aussen: %d, press: %d, hum: %d, temp: %d",
			layout.innenBaseline, layout.aussenBaseline,
			layout.pressBaseline, layout.humBaseline, layout.tempBaseline);
	ESP_LOGI("main", "Width - units: %d, i/o: %d", layout.unitW, layout.ioW);
	ESP_LOGI("main", "Left - units: %d", layout.unitLeft);
	return layout;
}

void display_data(int32_t temp_raw, uint32_t pressure_raw, uint32_t humidity_raw,
		int32_t temp2_raw, uint32_t pressure2_raw, uint32_t humidity2_raw)
{
	TFT_setFont(UBUNTU16_FONT, NULL);
	TFT_fillScreen(TFT_BLACK);
	tft_fg = TFT_WHITE;

	const color_t red = {0, 0, 255};
	const color_t green = {0, 255, 0};
	const color_t blue = {255, 0, 0};
	const color_t yellow = {255, 255, 0};

	TFT_print("25.12.2031   08:31", layout.dateTimeLeft, layout.datetimeBaseline);
	TFT_drawFastHLine(0, 20, 160, TFT_WHITE);

	TFT_print("Innen", layout.innenLeft, layout.innenBaseline);
	TFT_print("Aussen", layout.aussenLeft, layout.aussenBaseline);

	TFT_setFont(DEJAVU18_FONT, NULL);
	tft_fg = red;
	TFT_print("-42,2", layout.innenLeft, layout.tempBaseline);
	tft_fg = yellow;
	TFT_print("-35,2", layout.aussenLeft, layout.tempBaseline);
	tft_fg = TFT_WHITE;
	TFT_print(" C", layout.unitLeft, layout.tempBaseline);
	TFT_drawCircle(layout.unitLeft+3, layout.tempBaseline+3, 3, TFT_WHITE);

	TFT_setFont(UBUNTU16_FONT, NULL);
	TFT_print("25,2", layout.innenLeft, layout.humBaseline);
	TFT_print("42,2", layout.aussenLeft, layout.humBaseline);
	TFT_print("%", layout.unitLeft, layout.humBaseline);

	TFT_print("1288", layout.innenLeft, layout.pressBaseline);
	TFT_print("2563", layout.aussenLeft, layout.pressBaseline);
	TFT_print("hPa", layout.unitLeft, layout.pressBaseline);
}

esp_err_t init_display()
{
	tft_max_rdclock = 4000000;
	TFT_PinsInit();
	spi_lobo_device_handle_t spi;

    spi_lobo_bus_config_t buscfg={
        .miso_io_num=PIN_NUM_MISO,				// set SPI MISO pin
        .mosi_io_num=PIN_NUM_MOSI,				// set SPI MOSI pin
        .sclk_io_num=PIN_NUM_CLK,				// set SPI CLK pin
        .quadwp_io_num=-1,
        .quadhd_io_num=-1,
		.max_transfer_sz = 6*1024,
    };
    spi_lobo_device_interface_config_t devcfg={
        .clock_speed_hz=8000000,
        .mode=0,
        .spics_io_num=-1,
		.spics_ext_io_num=PIN_NUM_CS,
		.flags=LB_SPI_DEVICE_HALFDUPLEX,
    };
    esp_err_t ret;
	ret=spi_lobo_bus_add_device(SPI_BUS, &buscfg, &devcfg, &spi);
    if (ret != ESP_OK)
    {
    	return ret;
    }
	tft_disp_spi = spi;

	TFT_display_init();

	tft_max_rdclock = find_rd_speed();

	spi_lobo_set_speed(spi, DEFAULT_SPI_CLOCK);

	tft_font_rotate = 0;
	tft_text_wrap = 0;
	tft_font_transparent = 0;
	tft_font_forceFixed = 0;
	tft_gray_scale = 0;
    TFT_setGammaCurve(DEFAULT_GAMMA_CURVE);
	TFT_setRotation(LANDSCAPE_FLIP);
	TFT_setFont(DEFAULT_FONT, NULL);
	TFT_resetclipwin();
	tft_image_debug = 0;

	layout = create_layout();

	return ESP_OK;
}