mbed example application for the Adafruit ST7735 TFT Shield, which implements SPI connections to the TFT shield and SD card, as well as an ADC to read from the analog in pins.

Dependencies:   Adafruit_GFX Adafruit_ST7735 SDFileSystem mbed-os

Fork of mbed-TFT-example-NCS36510 by Jacob Johnson

Revision:
3:81a34c232d99
Parent:
2:fa3fb1787cf8
--- a/main.cpp	Tue Jan 31 17:16:30 2017 +0000
+++ b/main.cpp	Mon Feb 27 17:49:04 2017 +0000
@@ -1,41 +1,69 @@
 /***************************************
-This is a working copy. It is not finished.
+Example Application for the Adafruit ST7735 TFT Shield
+on the ON Semiconductor NCS36510 mbed Board
 ***************************************/
 
 #include "mbed.h"
 #include "Adafruit_ST7735.h"
 #include "SDFileSystem.h"
-//#include <string>
+#include <string>
+#include <sstream>
+
+using namespace std;
+
 
 DigitalOut led1(LED1);
+AnalogIn adc_in_3(A3);
+AnalogIn adc_in_2(A2);
+
 SDFileSystem sd(D11, D12, D13, D4, "SD"); // the pinout on the mbed // mosi, miso, sclk, cs
 Adafruit_ST7735 tft(D11, D12, D13, D10, D6, D9); // MOSI, MISO, SCLK, SSEL, TFT_DC, TFT_RST
-AnalogIn joystick(A3);
 
-uint8_t readButton(void);
+Serial PC(USBTX, USBRX);
+
 
-// main() runs in its own thread in the OS
-// (note the calls to wait below for delays)
 int main() {
-    
+    PC.printf("start");
+        
     tft.initR(INITR_BLACKTAB);   // initialize a ST7735S chip, black tab
     tft.fillScreen(ST7735_BLACK);
+    tft.DrawBitmapFile("/SD/ON.bmp"); //Note, this must be a 24-bit Bitmap file, with a resolution less than 128x160 pixels
     
-    int result = tft.DrawBitmapFile("/SD/ON.bmp");
-    
+    float a, b;
+    uint32_t file_index = 0;
+  
     while (true) {
         
-        float b = joystick.read();
+        stringstream temp_str;
+        temp_str<<(file_index);
+        string filename_str = "/SD/data" + temp_str.str() + ".csv";
+        const char* filename_cstr = filename_str.c_str();
+        FILE *fp = fopen(filename_cstr, "w");
+        led1=1;
+       
         
-        tft.setTextColor(ST7735_GREEN);
-        //tft.setCursor(0, 60);  //claims that this is not in the Adafruit_ST7735 library?  How are these files linked together?  
-        tft.printf("%f \n\r", b); 
-        printf("%f \n\r", b);
-        wait_ms(100);
-        
+        uint32_t i = 0;
+        while (i < 50){
+            a = adc_in_3.read(); /* Read the converted analog value */ 
+            b = adc_in_2.read();
+            fprintf(fp,"%f\n", a);
+            tft.setTextColor(ST7735_GREEN, ST7735_BLACK); //(Text Color, Background color)
+            tft.setTextCursor(0, 120);
+            tft.printf("ADC 3: %f\n\rADC 2: %f\n\r",  (a), (b)); 
+            if (a < 0.1){tft.printf("Joystick: LEFT   ");}
+            else if (a > 0.1 && a < .2){tft.printf("Joystick: DOWN   ");}
+            else if (a > 0.2 && a < .3){tft.printf("Joystick: PUSHED   ");}
+            else if (a > 0.3 && a < .65){tft.printf("Joystick: RIGHT   ");}
+            else if (a > 0.65 && a < .725){tft.printf("Joystick: UP      ");}
+            else if (a > 0.725){tft.printf("Joystick: DEFAULT");}
+            wait_ms(.5); 
+            i++;
+        }
+        fclose(fp);
+        led1=0;
+        file_index++;
+       
         
     }
 }
 
-
-