Diff: hal_stm_lvgl/touchpad/touchpad.c

Revision:

3:4f5dc253eb7b

Child:

5:071136c3eefa

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hal_stm_lvgl/touchpad/touchpad.c	Sat Apr 24 19:08:28 2021 +0000
@@ -0,0 +1,89 @@
+/**
+ * @file indev.c
+ *
+ */
+
+/*********************
+ *      INCLUDES
+ *********************/
+#include "hal_stm_lvgl/tft/tft.h"
+#include "lvgl/src/lv_hal/lv_hal.h"
+
+#include "stm32746g_discovery.h"
+#include "stm32746g_discovery_ts.h"
+
+/*********************
+ *      DEFINES
+ *********************/
+
+/**********************
+ *      TYPEDEFS
+ **********************/
+
+/**********************
+ *  STATIC PROTOTYPES
+ **********************/
+static bool touchpad_read(lv_indev_drv_t *drv, lv_indev_data_t *data);
+
+/**********************
+ *  STATIC VARIABLES
+ **********************/
+static TS_StateTypeDef  TS_State;
+
+/**********************
+ *      MACROS
+ **********************/
+
+/**********************
+ *   GLOBAL FUNCTIONS
+ **********************/
+
+/**
+ * Initialize your input devices here
+ */
+void touchpad_init(void)
+{
+    BSP_TS_Init(TFT_HOR_RES, TFT_VER_RES);
+
+    lv_indev_drv_t indev_drv;                       /*Descriptor of an input device driver*/
+    lv_indev_drv_init(&indev_drv);                  /*Basic initialization*/
+    indev_drv.type = LV_INDEV_TYPE_POINTER;         /*The touchpad is pointer type device*/
+    indev_drv.read_cb = touchpad_read;
+
+    lv_indev_drv_register(&indev_drv);
+}
+
+/**********************
+ *   STATIC FUNCTIONS
+ **********************/
+
+/**
+ * Read an input device
+ * @param indev_id id of the input device to read
+ * @param x put the x coordinate here
+ * @param y put the y coordinate here
+ * @return true: the device is pressed, false: released
+ */
+static bool touchpad_read(lv_indev_drv_t *indev, lv_indev_data_t *data)
+{
+    /* Read your touchpad */
+    static int16_t last_x = 0;
+    static int16_t last_y = 0;
+    //BSP_LED_Toggle(LED1);
+
+    BSP_TS_GetState(&TS_State);
+    if(TS_State.touchDetected) {
+            data->point.x = TS_State.touchX[0];
+            data->point.y = TS_State.touchY[0];
+            last_x = data->point.x;
+            last_y = data->point.y;
+            data->state = LV_INDEV_STATE_PR;
+    } else {
+            data->point.x = last_x;
+            data->point.y = last_y;
+            data->state = LV_INDEV_STATE_REL;
+    }
+
+    return false;   /*false: no more data to read because we are no buffering*/
+}
+