tests/driver_st7735: add test application

tests/driver_st7735/Kconfig

@@ -0,0 +1,15 @@
+# Copyright (c) 2021 HAW Hamburg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+#
+
+config NO_RIOT_IMAGE
+    bool
+    prompt "Avoid showing the RIOT logo on the test" if !HAS_ARCH_AVR8
+    # the logo does not usually fit in AVR8
+    default y if HAS_ARCH_AVR8
+    help
+        Say y to avoid loading the RIOT logo on the test application. Useful for architectures
+        storing it in a limited RAM.

tests/driver_st7735/Makefile

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+BOARD ?= stm32f429i-disc1
+
+include ../Makefile.tests_common
+
+USEMODULE += st7735
+USEMODULE += ztimer
+USEMODULE += ztimer_msec
+
+# As there is an 'Kconfig' we want to explicitly disable Kconfig by setting
+# the variable to empty
+SHOULD_RUN_KCONFIG ?=
+
+include $(RIOTBASE)/Makefile.include
+
+# Check if being configured via Kconfig
+ifndef CONFIG_KCONFIG_USEMODULE_LCD
+  CFLAGS += -DCONFIG_LCD_LE_MODE
+
+  # The AVR architecture stores the image in the RAM, this usually doesn't fit.
+  # This flag excludes the image from the test
+  ifneq (,$(filter arch_avr8,$(FEATURES_USED)))
+    CFLAGS += -DCONFIG_NO_RIOT_IMAGE
+  endif
+endif

tests/driver_st7735/Makefile.ci

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+BOARD_INSUFFICIENT_MEMORY := \
+    nucleo-l011k4 \
+    samd10-xmini \
+    stk3200 \
+    stm32f030f4-demo \
+    #

tests/driver_st7735/app.config.test

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+# this file enables modules defined in Kconfig. Do not use this file for
+# application configuration. This is only needed during migration.
+CONFIG_MODULE_ST7735=y
+CONFIG_MODULE_ZTIMER=y
+CONFIG_MODULE_ZTIMER_MSEC=y

tests/driver_st7735/main.c

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+/*
+ * Copyright (C) 2018 Koen Zandberg <koen@bergzand.net>
+ *               2021 Francisco Molina
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @ingroup     tests
+ * @{
+ *
+ * @file
+ * @brief       Test application for lcd tft displays
+ *
+ * @author      Koen Zandberg <koen@bergzand.net>
+ * @author      Francisco Molina <francois-xavier.molina@inria.fr>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include "timex.h"
+#include "ztimer.h"
+#include "board.h"
+#include "lcd.h"
+
+#include "riot_logo.h"
+
+#include "st7735.h"
+#include "st7735_params.h"
+
+int main(void)
+{
+    lcd_t dev;
+    dev.driver = &lcd_st7735_driver;
+
+    puts("lcd TFT display test application");
+
+    /* initialize the sensor */
+    printf("Initializing display...");
+
+    /* Enable backlight if macro is defined */
+#ifdef BACKLIGHT_ON
+    BACKLIGHT_ON;
+#endif
+
+    if (lcd_init(&dev, &st7735_params[0].params) == 0) {
+        puts("[OK]");
+    }
+    else {
+        puts("[Failed]");
+        return 1;
+    }
+
+    puts("lcd TFT display filling map");
+    lcd_fill(&dev, 0, dev.params->lines, 0, dev.params->rgb_channels, 0x0000);
+    puts("lcd TFT display map filled");
+
+    /* Fill square with blue */
+    puts("Drawing blue rectangle");
+    lcd_fill(&dev, 0, dev.params->lines / 3, 0, dev.params->rgb_channels, 0x001F);
+    ztimer_sleep(ZTIMER_MSEC, 1 * MS_PER_SEC);
+
+    puts("Drawing green rectangle");
+    lcd_fill(&dev, dev.params->lines / 3, 2 * (dev.params->lines / 3), 0,
+             dev.params->rgb_channels, 0x07E0);
+    ztimer_sleep(ZTIMER_MSEC, 1 * MS_PER_SEC);
+
+    puts("Drawing red rectangle");
+    lcd_fill(&dev, 2 * (dev.params->lines / 3), dev.params->lines, 0,
+             dev.params->rgb_channels, 0xf800);
+    ztimer_sleep(ZTIMER_MSEC, 1 * MS_PER_SEC);
+
+    lcd_invert_on(&dev);
+    puts("lcd TFT display inverted");
+    ztimer_sleep(ZTIMER_MSEC, 1 * MS_PER_SEC);
+    lcd_invert_off(&dev);
+    puts("lcd TFT display normal");
+
+    puts("lcd TFT display clear screen");
+    lcd_fill(&dev, 0, dev.params->lines, 0, dev.params->rgb_channels, 0x0000);
+#ifndef CONFIG_NO_RIOT_IMAGE
+    /* Approximate middle of the display */
+    uint8_t x1 = (dev.params->lines / 2) - (RIOT_LOGO_WIDTH / 2);
+    uint8_t y1 = (dev.params->rgb_channels / 2) - (RIOT_LOGO_HEIGHT / 2);
+    lcd_pixmap(&dev, x1, x1 + RIOT_LOGO_WIDTH - 1, y1, y1 +  RIOT_LOGO_HEIGHT - 1,
+               (const uint16_t *)picture);
+#endif
+    while (1) {}
+
+    return 0;
+}