add screen library

ide-touchgfx-gen/TouchGFX/target/CortexMMCUInstrumentation.cpp

@@ -0,0 +1,48 @@
+#include <CortexMMCUInstrumentation.hpp>
+#include <touchgfx/hal/HAL.hpp>
+
+namespace touchgfx
+{
+void CortexMMCUInstrumentation::init()
+{
+    // See: http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.ddi0337e/CEGHJDCF.html
+    //
+    //      [24]  Read/write  TRCENA  This bit must be set to 1 to enable use of the trace and debug blocks:
+    //                                    Data Watchpoint and Trace (DWT)
+    //                                    Instrumentation Trace Macrocell (ITM)
+    //                                    Embedded Trace Macrocell (ETM)
+    //                                    Trace Port Interface Unit (TPIU).
+    //                                    This enables control of power usage unless tracing is required. The application can enable this, for ITM use, or use by a debugger.
+
+    // Enable Debug Exception and Monitor Control Register
+    *((volatile unsigned int*)0xE000EDFC) |= 0x01000000;
+    // Enable Lock Access Register
+    *((volatile unsigned int*)0xE0001FB0) |= 0xC5ACCE55;
+    // Enable Data Watchpoint and Trace Control Register
+    *((volatile unsigned int*)0xE0001000) |= 1;
+}
+
+//Board specific clockfrequency
+unsigned int CortexMMCUInstrumentation::getElapsedUS(unsigned int start, unsigned int now, unsigned int clockfrequency)
+{
+    return ((now - start) + (clockfrequency / 2)) / clockfrequency;
+}
+
+unsigned int CortexMMCUInstrumentation::getCPUCycles()
+{
+    return *((volatile unsigned int*)0xE0001004);
+}
+
+void CortexMMCUInstrumentation::setMCUActive(bool active)
+{
+    if (active) //idle task sched out
+    {
+        uint32_t cc_temp = getCPUCycles() - cc_in;
+        cc_consumed += cc_temp;
+    }
+    else //idle task sched in
+    {
+        cc_in = getCPUCycles();
+    }
+}
+}