tests/touch_dev: add test application

tests/touch_dev/Makefile

@@ -0,0 +1,10 @@
+BOARD ?= stm32f429i-disc1
+include ../Makefile.tests_common
+
+DISABLE_MODULE += test_utils_interactive_sync
+
+USEMODULE += stmpe811
+USEMODULE += touch_dev
+USEMODULE += xtimer
+
+include $(RIOTBASE)/Makefile.include

tests/touch_dev/main.c

@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2020 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       Generic touch device test application
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+#include <assert.h>
+#include <stdbool.h>
+
+#include "xtimer.h"
+
+#include "touch_dev.h"
+
+#include "stmpe811.h"
+#include "stmpe811_params.h"
+#include "stmpe811_touch_dev.h"
+
+#include "test_utils/expect.h"
+
+static stmpe811_t stmpe811;
+
+static void _touch_event_cb(void *arg)
+{
+    (void)arg;
+    puts("Pressed!");
+}
+
+int main(void)
+{
+    stmpe811_init(&stmpe811, &stmpe811_params[0], _touch_event_cb, NULL);
+
+    touch_dev_t *dev = (touch_dev_t *)&stmpe811;
+    dev->driver = &stmpe811_touch_dev_driver;
+
+    uint16_t xmax = touch_dev_width(dev);
+    uint16_t ymax = touch_dev_height(dev);
+
+    expect(xmax == stmpe811.params.xmax);
+    expect(ymax == stmpe811.params.ymax);
+
+    uint8_t last_touches = touch_dev_touches(dev, NULL, 1);
+
+    while (1) {
+        touch_t touches[1];
+        uint8_t current_touches = touch_dev_touches(dev, touches, 1);
+
+        if (current_touches != last_touches) {
+            if (current_touches == 0) {
+                puts("Released!");
+            }
+            last_touches = current_touches;
+        }
+
+        /* Display touch position if pressed */
+        if (current_touches == 1) {
+            printf("X: %i, Y:%i\n", touches[0].x, touches[0].y);
+        }
+
+        xtimer_usleep(10 * US_PER_MS);
+    }
+
+    return 0;
+}