Initial public release.

2020TPCApp1.cydsn/HW/HW_CapSense.c

@@ -0,0 +1,125 @@
+/* Include Files */
+#include "KTag.h"
+
+/* Local Definitions and Constants */
+
+#define CAPSENSE_TASK_PERIOD_IN_ms 50
+
+/* Public Variables */
+
+TaskHandle_t HW_CapSense_Task_Handle;
+
+/* Private Variables */
+
+static const TickType_t CapSense_Task_Delay = CAPSENSE_TASK_PERIOD_IN_ms / portTICK_PERIOD_MS;
+
+static bool CapSense_One_Pressed = false;
+static bool CapSense_Two_Pressed = false;
+
+/* Private Function Prototypes */
+
+
+/* Public Functions */
+
+//! Initializes the capacitive touch sensing.
+void HW_CapSense_Init(void)
+{
+}
+
+//! Capacitive touch sensing task: Manages the capsense, using the PSoC API functions.
+/*!
+ *
+ */
+void HW_CapSense_Task(void * pvParameters)
+{
+    TickType_t xLastWakeTime;
+
+    // Initialize the xLastWakeTime variable with the current time.
+    xLastWakeTime = xTaskGetTickCount();
+    
+    // Start up the capsense component, and initiate the first scan.
+    // Note that this can't be done in HW_CapSense_Init(), since it requires interrupts to be enabled.
+    CapSense_Start();
+    CapSense_ScanAllWidgets();
+    
+    vTaskDelayUntil(&xLastWakeTime, CapSense_Task_Delay);
+    
+    while (true)
+    {
+        // Check to see if the CapSense hardware is still busy with a previous scan.
+        if (CapSense_IsBusy() == CapSense_NOT_BUSY)
+        {
+            // Process all the widgets and read the touch information.
+            CapSense_ProcessAllWidgets();
+            
+            // Perform the on-change logic for "Button One".
+            if (CapSense_IsSensorActive(CapSense_BUTTON0_WDGT_ID, CapSense_BUTTON0_SNS0_ID))
+            {
+                if (CapSense_One_Pressed == false)
+                {
+                    KEvent_T switch_event = {.ID = KEVENT_CAPSENSE_ONE_PRESSED, .Data = NULL};
+                    Post_KEvent(&switch_event);
+                }
+                CapSense_One_Pressed = true;
+            }
+            else
+            {
+                if (CapSense_One_Pressed == true)
+                {
+                    KEvent_T switch_event = {.ID = KEVENT_CAPSENSE_ONE_RELEASED, .Data = NULL};
+                    Post_KEvent(&switch_event);
+                }
+                CapSense_One_Pressed = false;
+            }
+            
+            // Perform the on-change logic for "Button Two".
+            if (CapSense_IsSensorActive(CapSense_BUTTON0_WDGT_ID, CapSense_BUTTON0_SNS1_ID))
+            {
+                if (CapSense_Two_Pressed == false)
+                {
+                    KEvent_T switch_event = {.ID = KEVENT_CAPSENSE_TWO_PRESSED, .Data = NULL};
+                    Post_KEvent(&switch_event);
+                }
+                CapSense_Two_Pressed = true;
+            }
+            else
+            {
+                if (CapSense_Two_Pressed == true)
+                {
+                    KEvent_T switch_event = {.ID = KEVENT_CAPSENSE_TWO_RELEASED, .Data = NULL};
+                    Post_KEvent(&switch_event);
+                }
+                CapSense_Two_Pressed = false;
+            }
+            
+            // Initiate the next scan.
+            CapSense_ScanAllWidgets();
+        }
+       
+        vTaskDelayUntil(&xLastWakeTime, CapSense_Task_Delay);
+    }
+}
+
+//! Gets the state of the given CapSense button.
+/*!
+ *  \param  button  the button in question
+ *  \return         true if the button was pressed last time it was checked; false otherwise
+ */
+bool HW_IsCapsenseButtonPressed(HW_CapSenseButton_T button)
+{
+    bool pressed = false;
+    
+    if ((button == HW_CAPSENSE_BUTTON_ONE) && (CapSense_One_Pressed == true))
+    {
+        pressed = true;
+    }
+    else if ((button == HW_CAPSENSE_BUTTON_TWO) && (CapSense_Two_Pressed == true))
+    {
+        pressed = true;
+    }
+    
+    return pressed;
+}
+
+/* Private Functions */
+