add lab7

lab7/CMakeLists.txt

+#to compile the project:
+# mkdir _build
+# cd _build
+# cmake -D CMAKE_TOOLCHAIN_FILE=../../sys/cmake/arm-none-eabi.cmake ..
+# make
+# make flash
+cmake_minimum_required(VERSION 3.5)
+
+#project name
+project(lab7)
+
+#application sources
+set(SRCS
+	${CMAKE_SOURCE_DIR}/main.cpp
+)
+
+option(WITH_TFT "add compilation rules for the TFT support" ON)
+include("../sys/cmake/coroLabs.cmake")

lab7/main.cpp

+#include "stm32f3xx.h"
+#include "Adafruit_GFX.h"
+#include "Adafruit_ST7735.h"
+#include "adc.h"
+#include "tft.h"
+
+void setup()
+{
+	Tft.setup();
+	Tft.setTextCursor(4, 1); //col,line
+	Tft.print("Hello World! ");
+
+	ADCInit();
+}
+
+//this is a simple application that uses the TFT display.
+// => it first write a string in the top of the screen (in setup)
+// => it writes the ADC value of the potentiometer in green, and
+//    refreshes it each time the value differs more than 5.
+int main()
+{
+	static int prevPot = -1;
+	setup();
+	while(1)
+	{
+		//potentiometer
+		int pot = ADCRead(); //12 bits -> 4096 -> 4 digits
+		//update only we value changes significantly
+		if(abs(prevPot - pot) > 5)
+		{
+			//set cursor centered on line 4.
+			Tft.setTextCursor(Tft.getTextWidth()/2-2,4);
+			Tft.eraseText(4);	//remove previous value (4 digits)
+			Tft.print(pot);
+			prevPot = pot;
+		}
+	}
+}
+