drivers/ft5x06: add touch_dev interface

drivers/ft5x06/ft5x06_touch_dev.c

@@ -0,0 +1,81 @@
+/*
+ * 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     drivers_ft5x06
+ * @{
+ *
+ * @file
+ * @brief       Driver adaption to touch_dev generic interface
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ * @}
+ */
+
+#include <stddef.h>
+#include <stdint.h>
+#include <errno.h>
+#include <assert.h>
+
+#include "kernel_defines.h"
+#include "periph/gpio.h"
+
+#include "ft5x06.h"
+#include "ft5x06_touch_dev.h"
+
+#define ENABLE_DEBUG 0
+#include "debug.h"
+
+uint16_t _ft5x06_height(const touch_dev_t *touch_dev)
+{
+    const ft5x06_t *dev = (const ft5x06_t *)touch_dev;
+    assert(dev);
+
+    return dev->params.ymax;
+}
+
+uint16_t _ft5x06_width(const touch_dev_t *touch_dev)
+{
+    const ft5x06_t *dev = (const ft5x06_t *)touch_dev;
+    assert(dev);
+
+    return dev->params.xmax;
+}
+
+uint8_t _ft5x06_touches(const touch_dev_t *touch_dev, touch_t *touches, size_t len)
+{
+    ft5x06_t *dev = (ft5x06_t *)touch_dev;
+    assert(dev);
+
+    uint8_t ret;
+    ft5x06_read_touch_count(dev, &ret);
+
+    if (ret && touches != NULL) {
+        assert(len <= FT5X06_TOUCHES_COUNT_MAX);
+        ft5x06_read_touch_positions(dev, (ft5x06_touch_position_t *)touches, len);
+    }
+
+    return ret;
+}
+
+void _ft5x06_set_event_callback(const touch_dev_t *touch_dev, touch_event_cb_t cb, void *arg)
+{
+    ft5x06_t *dev = (ft5x06_t *)touch_dev;
+    assert(dev);
+
+    if (gpio_is_valid(dev->params.int_pin)) {
+        gpio_init_int(dev->params.int_pin, GPIO_IN, GPIO_RISING, cb, arg);
+    }
+}
+
+const touch_dev_driver_t ft5x06_touch_dev_driver = {
+    .height     = _ft5x06_height,
+    .width      = _ft5x06_width,
+    .touches    = _ft5x06_touches,
+    .set_event_callback = _ft5x06_set_event_callback,
+};

drivers/ft5x06/include/ft5x06_touch_dev.h

@@ -0,0 +1,38 @@
+/*
+ * 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     drivers_ft5x06
+ * @{
+ *
+ * @file
+ * @brief       Definition of the driver for the touch_dev generic interface
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ */
+
+#ifndef FT5X06_TOUCH_DEV_H
+#define FT5X06_TOUCH_DEV_H
+
+#include "touch_dev.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief   Reference to the touch device driver struct
+ */
+extern const touch_dev_driver_t ft5x06_touch_dev_driver;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* FT5X06_TOUCH_DEV_H */
+/** @} */

sys/auto_init/screen/auto_init_ft5x06.c

@@ -0,0 +1,52 @@
+/*
+ * 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     sys_auto_init
+ * @{
+ * @file
+ * @brief       initializes ft5x06 touch panel device
+ *
+ * @author      Alexandre Abadie <alexandre.abadie@inria.fr>
+ * @}
+ */
+
+#include <stddef.h>
+
+#include "log.h"
+
+#include "touch_dev.h"
+
+#include "ft5x06.h"
+#include "ft5x06_params.h"
+#include "ft5x06_touch_dev.h"
+
+#define FT5X06_NUMOF           ARRAY_SIZE(ft5x06_params)
+
+ft5x06_t ft5x06_devs[FT5X06_NUMOF];
+static touch_dev_reg_t touch_dev_entries[FT5X06_NUMOF];
+
+void auto_init_ft5x06(void)
+{
+    assert(FT5X06_NUMOF == ARRAY_SIZE(ft5x06_screen_ids));
+
+    for (size_t i = 0; i < FT5X06_NUMOF; i++) {
+        LOG_DEBUG("[auto_init_screen] initializing ft5x06 #%u\n", i);
+        if (ft5x06_init(&ft5x06_devs[i], &ft5x06_params[i], NULL, NULL) < 0) {
+            LOG_ERROR("[auto_init_screen] error initializing ft5x06 #%u\n", i);
+            continue;
+        }
+
+        touch_dev_entries[i].dev = (touch_dev_t *)&ft5x06_devs[i];
+        touch_dev_entries[i].screen_id = ft5x06_screen_ids[i];
+        touch_dev_entries[i].dev->driver = &ft5x06_touch_dev_driver;
+
+        /* add to touch_dev registry */
+        touch_dev_reg_add(&(touch_dev_entries[i]));
+    }
+}

sys/auto_init/screen/init.c

@@ -41,6 +41,10 @@ void auto_init_screen(void)
             extern void auto_init_stmpe811(void);
             auto_init_stmpe811();
         }
+        if (IS_USED(MODULE_FT5X06)) {
+            extern void auto_init_ft5x06(void);
+            auto_init_ft5x06();
+        }
     }
 
     if (IS_USED(MODULE_LVGL)) {