adding digistump encoder arduino code

Former-commit-id: ae89e87ec766ff19f1c3ec92934430065a9205b6

digistump_firmware/encoder_loop_debounce/encoder_loop_debounce.ino

@@ -0,0 +1,92 @@
+#include "DigiKeyboard.h"
+
+#define encoder0PinA 0
+#define encoder0PinB 2
+
+#define aIn  //5 is 0 on the digistump
+
+#define avgPeriod 100
+
+static boolean rotating=false;
+
+float avgRead = 0;
+float lastRead = 0;
+unsigned char avgCount = 0;
+
+float buttonState =  0;
+
+bool lastButtonState = 0;
+
+int rotIncrement = 0;
+
+void setup() {
+ 
+  pinMode(encoder0PinA, INPUT); 
+  digitalWrite(encoder0PinA, HIGH);       
+  pinMode(encoder0PinB, INPUT); 
+  digitalWrite(encoder0PinB, HIGH); 
+
+  pinMode(1, INPUT);
+  digitalWrite(1, HIGH);
+
+  attachInterrupt(0, rotEncoder, CHANGE);  
+}
+
+void rotEncoder(){
+  rotating=true; 
+}
+
+void loop() {
+    DigiKeyboard.update();
+
+    avgRead += (float)analogRead(0) / avgPeriod;
+    avgCount++;
+
+    buttonState += (float)digitalRead(1) / avgPeriod;
+
+    if(avgCount >= avgPeriod) {
+      if(abs(avgRead - lastRead) >= 1) {
+        DigiKeyboard.print(String((int)avgRead, HEX));
+        DigiKeyboard.println(""); 
+        lastRead = avgRead;
+      }
+
+      if((buttonState > .5) != lastButtonState) {
+        lastButtonState = (buttonState > .5);
+
+        if(lastButtonState) {
+          DigiKeyboard.print("n");          
+        } else {
+          DigiKeyboard.print("m");
+        }
+         
+      }
+      
+      avgRead = 0;
+      avgCount = 0;
+      buttonState = 0;
+      
+    }
+  
+    while(rotating) {
+      delay(2);
+  
+      if (digitalRead(encoder0PinA) == digitalRead(encoder0PinB)) {  
+        rotIncrement++;
+      } 
+      else {          
+        rotIncrement--;                        
+      }
+      rotating=false; // Reset the flag back to false
+    }
+
+    if(rotIncrement >= 2) {
+      DigiKeyboard.print("z");
+      rotIncrement = 0;
+    }
+
+    if(rotIncrement <= -2) {
+      DigiKeyboard.print("x");
+      rotIncrement = 0;
+    }
+}

digistump_firmware/encoder_loop_debounce_002/encoder_loop_debounce_002.ino

@@ -0,0 +1,125 @@
+#include "DigiKeyboard.h"
+
+#define encoderPinA 0
+#define encoderPinB 2
+#define selectPin   1
+#define sqlPin      0   //5 is 0 on the digistump
+
+#define bufferPeriod 100
+
+float encoderPinABuffer = 0;
+float encoderPinBBuffer = 0;
+float selectPinBuffer = 0;
+float sqlPinBuffer = 0;
+
+int encoderCounter = 0;
+
+bool encoderPinALast = 0;
+bool encoderPinBLast = 0;
+bool selectPinLast = 0;
+float sqlPinLast = 0;
+
+int bufferCounter = 0;
+
+int8_t lookup_table[] = {0,-1,1,0,1,0,0,-1,-1,0,0,1,0,1,-1,0};
+
+uint8_t index = 0;
+
+void setup() {
+ 
+  pinMode(encoderPinA, INPUT); 
+  digitalWrite(encoderPinA, HIGH);       
+  pinMode(encoderPinB, INPUT); 
+  digitalWrite(encoderPinB, HIGH); 
+
+  pinMode(selectPin, INPUT);
+  digitalWrite(selectPin, HIGH);
+
+  pinMode(sqlPin, INPUT);
+}
+
+void loop() {
+
+  //update buffers
+  
+  //encoderPinABuffer += (float)digitalRead(encoderPinA) / bufferPeriod;
+  //encoderPinBBuffer += (float)digitalRead(encoderPinB) / bufferPeriod;
+  selectPinBuffer += (float)digitalRead(selectPin) / bufferPeriod;
+  sqlPinBuffer += (float)analogRead(sqlPin) / bufferPeriod;
+
+  bufferCounter++;
+
+  bool encoderPinAState = (bool)digitalRead(encoderPinA);
+  bool encoderPinBState = (bool)digitalRead(encoderPinB);
+
+  if((encoderPinAState != encoderPinALast) | (encoderPinBState != encoderPinBLast)) {
+    index = (index << 2) & 0b1100;
+    index = index  | ((encoderPinAState << 1) + encoderPinBState);
+  
+    encoderCounter += lookup_table[index & 0b1111];
+    
+    if(encoderCounter > 2) {
+      DigiKeyboard.print("z");
+      encoderCounter = 0;
+    }
+
+    if(encoderCounter < -2) {
+      DigiKeyboard.print("x");
+      encoderCounter = 0;
+    }   
+
+    encoderPinALast = encoderPinAState;
+    encoderPinBLast = encoderPinBState;
+  }
+  
+  //check pin values
+  if(bufferCounter > bufferPeriod) {
+    //usb keepalive
+    DigiKeyboard.update();
+
+    //bool encoderPinAState = encoderPinABuffer > .5;
+    //bool encoderPinBState = encoderPinBBuffer > .5;
+    bool selectPinState = selectPinBuffer > .5;
+
+    //check encoder pins nd transmit
+//    if(encoderPinAState != encoderPinALast || encoderPinBState != encoderPinBLast)  {
+//
+//      uint8_t index = (encoderPinALast << 4) + (encoderPinBLast << 3) + (encoderPinAState << 1) + encoderPinBState;
+//
+//      //encoderDetentCounter += lookup_table[index];
+//
+//      if(lookup_table[index] > 0) {
+//        DigiKeyboard.print("z");
+//      } else if (lookup_table[index] < 0) {
+//        DigiKeyboard.print("x");
+//      }
+//      
+//      encoderPinALast = encoderPinAState;
+//      encoderPinBLast = encoderPinBState;
+//    }
+    
+    //check select pin and transmit
+    if(selectPinState != selectPinLast) {
+      selectPinLast = selectPinState;
+      if(selectPinLast) {
+        DigiKeyboard.print("n");          
+      } else {
+        DigiKeyboard.print("m");
+      }
+    }
+
+    //check squelch knob and transmit    
+    if(abs(sqlPinBuffer - sqlPinLast) >= 1) {
+      DigiKeyboard.print(String((int)sqlPinBuffer, HEX));
+      DigiKeyboard.println(""); 
+      sqlPinLast = sqlPinBuffer;
+    }
+
+    // reset buffers
+    encoderPinABuffer = 0;
+    encoderPinBBuffer = 0;
+    selectPinBuffer = 0;
+    sqlPinBuffer = 0;
+    bufferCounter = 0;
+  }
+}

digistump_firmware/libraries/readme.txt

@@ -0,0 +1 @@
+For information on installing libraries, see: http://www.arduino.cc/en/Guide/Libraries

grid_pc.py

@@ -0,0 +1,60 @@
+#!/usr/bin/python
+
+import pygame
+import os
+from time import sleep
+
+#Colours
+WHITE = (255,255,255)
+ 
+#os.putenv('SDL_FBDEV', '/dev/fb1')
+pygame.init()
+pygame.mouse.set_visible(False)
+lcd = pygame.display.set_mode((320, 240))
+
+font_big = pygame.font.Font(None, 100)
+font_small = pygame.font.Font(None, 18)
+
+lcd.fill((0,0,0))
+pygame.display.update()
+ 
+top_1 = (0,0,80,40);
+top_2 = (80,0,80,40);
+top_3 = (160,0,80,40);
+top_4 = (240,0,80,40);
+
+pygame.draw.rect(lcd, (100,100,100), top_1, 2)
+pygame.draw.rect(lcd, (100,100,100), top_2, 2)
+pygame.draw.rect(lcd, (100,100,100), top_3, 2)
+pygame.draw.rect(lcd, (100,100,100), top_4, 2)
+
+text_surface = font_small.render('DEMOD', True, WHITE)
+rect = text_surface.get_rect(center=(40, 20))
+lcd.blit(text_surface, rect)
+
+text_surface = font_small.render('SQLCH', True, WHITE)
+rect = text_surface.get_rect(center=(120, 20))
+lcd.blit(text_surface, rect)
+
+text_surface = font_small.render('GAIN', True, WHITE)
+rect = text_surface.get_rect(center=(200, 20))
+lcd.blit(text_surface, rect)
+
+text_surface = font_small.render('MENU', True, WHITE)
+rect = text_surface.get_rect(center=(280, 20))
+lcd.blit(text_surface, rect)
+
+
+sql_gain_box = (0,40,32,200)
+
+pygame.draw.rect(lcd, (10,10,10), sql_gain_box, 2)
+
+for x in range(0,6):
+	pygame.draw.rect(lcd, (10,10,10), (32 + x * 48,40,48,80),2)
+ 	text_surface = font_big.render('%d'%x, True, WHITE)
+        rect = text_surface.get_rect(center=(32 + (x + .5) * 48, 80))
+        lcd.blit(text_surface, rect)
+
+while True:
+	pygame.display.update()
+	sleep(1)