tests/periph_ltdc: add test application

tests/periph_ltdc/Makefile

@@ -0,0 +1,9 @@
+BOARD ?= stm32f746g-disco
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED += periph_ltdc
+
+USEMODULE += ztimer
+USEMODULE += ztimer_msec
+
+include $(RIOTBASE)/Makefile.include

tests/periph_ltdc/main.c

@@ -0,0 +1,98 @@
+/*
+ * Copyright (C) 2021 Inria
+ *
+ * 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 the LCD-TFT display controller
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "timex.h"
+#include "ztimer.h"
+
+#include "board.h"
+#include "periph_cpu.h"
+
+#include "riot_logo.h"
+
+#define RECT_WIDTH      200
+#define RECT_HEIGHT     100
+#define PICTURE_WIDTH   128
+#define PICTURE_HEIGHT  69
+
+int main(void)
+{
+    ltdc_init();
+
+    ltdc_fill(0, RECT_WIDTH, 0, RECT_HEIGHT, 0xf800);  /* top left red rectangle */
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    ltdc_fill(  /* middle green rectangle */
+        (LCD_SCREEN_WIDTH - RECT_WIDTH) >> 1, (LCD_SCREEN_WIDTH + RECT_WIDTH) >> 1,
+        (LCD_SCREEN_HEIGHT - RECT_HEIGHT) >> 1, (LCD_SCREEN_HEIGHT + RECT_HEIGHT) >> 1,
+        0x07e0
+    );
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    ltdc_fill(  /* bottom right blue rectangle */
+        LCD_SCREEN_WIDTH - RECT_WIDTH, LCD_SCREEN_WIDTH - 1,
+        LCD_SCREEN_HEIGHT - RECT_HEIGHT, LCD_SCREEN_HEIGHT - 1,
+        0x001f
+    );
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    /* Display the RIOT logo in all 4 screen corners */
+    ltdc_map(
+        0, PICTURE_WIDTH - 1, 0, PICTURE_HEIGHT - 1,
+        (const uint16_t *)picture
+    );
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    ltdc_map(
+        LCD_SCREEN_WIDTH - PICTURE_WIDTH, LCD_SCREEN_WIDTH - 1, 0, PICTURE_HEIGHT - 1,
+        (const uint16_t *)picture
+    );
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    ltdc_map(
+        LCD_SCREEN_WIDTH - PICTURE_WIDTH, LCD_SCREEN_WIDTH - 1,
+        LCD_SCREEN_HEIGHT - PICTURE_HEIGHT, LCD_SCREEN_HEIGHT - 1,
+        (const uint16_t *)picture
+    );
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    ltdc_map(
+        0, PICTURE_WIDTH - 1, LCD_SCREEN_HEIGHT - PICTURE_HEIGHT, LCD_SCREEN_HEIGHT - 1,
+        (const uint16_t *)picture
+    );
+    ztimer_sleep(ZTIMER_MSEC, MS_PER_SEC);
+    ltdc_clear();
+
+    /* Display the RIOT logo in the center of the screen */
+    ltdc_map(
+        ((LCD_SCREEN_WIDTH - PICTURE_WIDTH) >> 1), ((LCD_SCREEN_WIDTH + PICTURE_WIDTH) >> 1) - 1,
+        ((LCD_SCREEN_HEIGHT - PICTURE_HEIGHT) >> 1), ((LCD_SCREEN_HEIGHT + PICTURE_HEIGHT) >> 1) - 1,
+        (const uint16_t *)picture
+    );
+
+    return 0;
+}