FSR presses to increase variable on a display - arduino

Question

Update: So I'm getting the error: "expected initializer before 'fsrAnalogPin'" with this code. Can someone help me sort this out?
// testshapes demo for Adafruit RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 32x32 RGB LED matrix:
// http://www.adafruit.com/products/607
// Written by Limor Fried/Ladyada & Phil Burgess/PaintYourDragon
// for Adafruit Industries.
// BSD license, all text above must be included in any redistribution.
#include <Adafruit_GFX.h> // Core graphics library
#include <RGBmatrixPanel.h> // Hardware-specific library
// If your 32x32 matrix has the SINGLE HEADER input,
// use this pinout:
#define CLK 8 // MUST be on PORTB! (Use pin 11 on Mega)
#define OE 9
#define LAT 10
#define A A0
#define B A1
#define C A2
#define D A3
#define PULLUP true //use the AVR's internal pullup resistor
#define INVERT true //low level means fsr pressed
#define DEBOUNCE_TIME 50 //milliseconds
// If your matrix has the DOUBLE HEADER input, use:
//#define CLK 8 // MUST be on PORTB! (Use pin 11 on Mega)
//#define LAT 9
//#define OE 10
//#define A A3
//#define B A2
//#define C A1
//#define D A0
RGBmatrixPanel matrix(A, B, C, D, CLK, LAT, OE, false);
void loop(){
Serial.begin(9600);
matrix.begin();
// draw a pixel in solid white
matrix.drawPixel(0, 0, matrix.Color333(7, 7, 7));
delay(500);
// fix the screen with green
matrix.fillRect(0, 0, 32, 32, matrix.Color333(0, 7, 0));
delay(500);
// draw a box in yellow
matrix.drawRect(0, 0, 32, 32, matrix.Color333(7, 7, 0));
delay(500);
// draw an 'X' in red
matrix.drawLine(0, 0, 31, 31, matrix.Color333(7, 0, 0));
matrix.drawLine(31, 0, 0, 31, matrix.Color333(7, 0, 0));
delay(500);
// draw a blue circle
matrix.drawCircle(10, 10, 10, matrix.Color333(0, 0, 7));
delay(500);
// fill a violet circle
matrix.fillCircle(21, 21, 10, matrix.Color333(7, 0, 7));
delay(500);
// fill the screen with 'black'
matrix.fillScreen(matrix.Color333(0, 0, 0));
// draw some text!
matrix.setCursor(1, 0); // start at top left, with one pixel of spacing
matrix.setTextSize(1); // size 1 == 8 pixels high
matrix.setTextWrap(false); // Don't wrap at end of line - will do ourselves
matrix.setTextColor(matrix.Color333(7,7,7));
matrix.println("FIST");
matrix.println(" BUMP");
// print each letter with a rainbow color
matrix.setTextColor(matrix.Color333(7,0,0));
matrix.print('C');
matrix.setTextColor(matrix.Color333(7,4,0));
matrix.print('O');
matrix.setTextColor(matrix.Color333(7,7,0));
matrix.print('U');
matrix.setTextColor(matrix.Color333(4,7,0));
matrix.print('N');
matrix.setTextColor(matrix.Color333(0,7,0));
matrix.println('T');
{
const int fsr_pin = A4; //connect fsr from this pin to ground
int read fsrAnalogPin = 4;
fsr_pin.read();
if( fsr_pin.wasPressed() ){
counter = counter + 1
matrix.setTextColor( matrix.Color333(0,7,7) );
matrix.print( counter )
}
}
// whew!
}
void loop() {
// do nothing
}
if someone can help me with my code I would be very grateful. What I'm trying to do is: Using a force-sensitive resistor, I want to count a given amount of pressure on the FSR with an arduino, that then displays each tap on an LED matrix. In other words, I have a glove with an FSR on it, and I want to count "fist bumps" that then display on an 32x32 Adafruit LED matrix.
Here's an example of what I want it to look like:
https://drive.google.com/file/d/0B4kq-ADrtz4mSzNWUTJoNGlBSU0/view?usp=sharing
That is just a static number on the bottom though. I need help making the code to connect a counting variable to the FSR "bumps." It's probably pretty simple but I'm entirely new to this so it's a lot to learn. So any help is appreciated
Here is what I have for code:
// testshapes demo for Adafruit RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 32x32 RGB LED matrix:
// http://www.adafruit.com/products/607
// Written by Limor Fried/Ladyada & Phil Burgess/PaintYourDragon
// for Adafruit Industries.
// BSD license, all text above must be included in any redistribution.
#include <Adafruit_GFX.h> // Core graphics library
#include <RGBmatrixPanel.h> // Hardware-specific library
// If your 32x32 matrix has the SINGLE HEADER input,
// use this pinout:
#define CLK 8 // MUST be on PORTB! (Use pin 11 on Mega)
#define OE 9
#define LAT 10
#define A A0
#define B A1
#define C A2
#define D A3
#define FSR_PIN A4 //connect fsr from this pin to ground
#define PULLUP true //use the AVR's internal pullup resistor
#define INVERT true //low level means fsr pressed
#define DEBOUNCE_TIME 50 //milliseconds
// If your matrix has the DOUBLE HEADER input, use:
//#define CLK 8 // MUST be on PORTB! (Use pin 11 on Mega)
//#define LAT 9
//#define OE 10
//#define A A3
//#define B A2
//#define C A1
//#define D A0
RGBmatrixPanel matrix(A, B, C, D, CLK, LAT, OE, false);
void setup() {
Serial.begin(9600);
matrix.begin();
// draw a pixel in solid white
matrix.drawPixel(0, 0, matrix.Color333(7, 7, 7));
delay(500);
// fix the screen with green
matrix.fillRect(0, 0, 32, 32, matrix.Color333(0, 7, 0));
delay(500);
// draw a box in yellow
matrix.drawRect(0, 0, 32, 32, matrix.Color333(7, 7, 0));
delay(500);
// draw an 'X' in red
matrix.drawLine(0, 0, 31, 31, matrix.Color333(7, 0, 0));
matrix.drawLine(31, 0, 0, 31, matrix.Color333(7, 0, 0));
delay(500);
// draw a blue circle
matrix.drawCircle(10, 10, 10, matrix.Color333(0, 0, 7));
delay(500);
// fill a violet circle
matrix.fillCircle(21, 21, 10, matrix.Color333(7, 0, 7));
delay(500);
// fill the screen with 'black'
matrix.fillScreen(matrix.Color333(0, 0, 0));
// draw some text!
matrix.setCursor(1, 0); // start at top left, with one pixel of spacing
matrix.setTextSize(1); // size 1 == 8 pixels high
matrix.setTextWrap(false); // Don't wrap at end of line - will do ourselves
matrix.setTextColor(matrix.Color333(7,7,7));
matrix.println("FIST");
matrix.println(" BUMP");
// print each letter with a rainbow color
matrix.setTextColor(matrix.Color333(7,0,0));
matrix.print('C');
matrix.setTextColor(matrix.Color333(7,4,0));
matrix.print('O');
matrix.setTextColor(matrix.Color333(7,7,0));
matrix.print('U');
matrix.setTextColor(matrix.Color333(4,7,0));
matrix.print('N');
matrix.setTextColor(matrix.Color333(0,7,0));
matrix.println('T');
void loop(void)
{
fsr.read();
if (fsr.wasPressed()) {
Serial.print(++counter, DEC);
Serial.println(" steps");
}
matrix.setTextColor(matrix.Color333(0,7,7));
matrix.print("29291");
// whew!
}
void loop() {
// do nothing
}

Answer 1

Firstly, you need to remove the loop() method from setup().
In the void loop() method, making following changes should get things working.
void loop(){
fsr.read();
if( fsr.wasPressed() ){
counter = counter + 1
matrix.setTextColor( matrix.Color333(0,7,7) );
matrix.print( counter )
}
}
EDIT
// testshapes demo for Adafruit RGBmatrixPanel library.
// Demonstrates the drawing abilities of the RGBmatrixPanel library.
// For 32x32 RGB LED matrix:
// http://www.adafruit.com/products/607
// Written by Limor Fried/Ladyada & Phil Burgess/PaintYourDragon
// for Adafruit Industries.
// BSD license, all text above must be included in any redistribution.
#include <Adafruit_GFX.h> // Core graphics library
#include <RGBmatrixPanel.h> // Hardware-specific library
// If your 32x32 matrix has the SINGLE HEADER input,
// use this pinout:
#define CLK 8 // MUST be on PORTB! (Use pin 11 on Mega)
#define OE 9
#define LAT 10
#define A A0
#define B A1
#define C A2
#define D A3
#define PULLUP true //use the AVR's internal pullup resistor
#define INVERT true //low level means fsr pressed
#define DEBOUNCE_TIME 50 //milliseconds
// If your matrix has the DOUBLE HEADER input, use:
//#define CLK 8 // MUST be on PORTB! (Use pin 11 on Mega)
//#define LAT 9
//#define OE 10
//#define A A3
//#define B A2
//#define C A1
//#define D A0
RGBmatrixPanel matrix(A, B, C, D, CLK, LAT, OE, false);
void setup(){
Serial.begin(9600);
matrix.begin();
// draw a pixel in solid white
matrix.drawPixel(0, 0, matrix.Color333(7, 7, 7));
delay(500);
// fix the screen with green
matrix.fillRect(0, 0, 32, 32, matrix.Color333(0, 7, 0));
delay(500);
// draw a box in yellow
matrix.drawRect(0, 0, 32, 32, matrix.Color333(7, 7, 0));
delay(500);
// draw an 'X' in red
matrix.drawLine(0, 0, 31, 31, matrix.Color333(7, 0, 0));
matrix.drawLine(31, 0, 0, 31, matrix.Color333(7, 0, 0));
delay(500);
// draw a blue circle
matrix.drawCircle(10, 10, 10, matrix.Color333(0, 0, 7));
delay(500);
// fill a violet circle
matrix.fillCircle(21, 21, 10, matrix.Color333(7, 0, 7));
delay(500);
// fill the screen with 'black'
matrix.fillScreen(matrix.Color333(0, 0, 0));
// draw some text!
matrix.setCursor(1, 0); // start at top left, with one pixel of spacing
matrix.setTextSize(1); // size 1 == 8 pixels high
matrix.setTextWrap(false); // Don't wrap at end of line - will do ourselves
matrix.setTextColor(matrix.Color333(7,7,7));
matrix.println("FIST");
matrix.println(" BUMP");
// print each letter with a rainbow color
matrix.setTextColor(matrix.Color333(7,0,0));
matrix.print('C');
matrix.setTextColor(matrix.Color333(7,4,0));
matrix.print('O');
matrix.setTextColor(matrix.Color333(7,7,0));
matrix.print('U');
matrix.setTextColor(matrix.Color333(4,7,0));
matrix.print('N');
matrix.setTextColor(matrix.Color333(0,7,0));
matrix.println('T');
}
void loop(){
const int fsr_pin = A4; //connect fsr from this pin to ground
int read fsrAnalogPin = 4;
fsr_pin.read();
if( fsr_pin.wasPressed() ){
counter = counter + 1
matrix.setTextColor( matrix.Color333(0,7,7) );
matrix.print( counter )
}
}
I will also suggest following proper indentation. That will make your code readable. It would be also great if you revise your Arduino prog. concepts.