Interactive Device Design
:)
Dependencies: MbedJSONValue DebounceIn TextLCD USBDevice mbed WebSocketClient cc3000_hostdriver_mbedsocket Adafruit_LEDBackpack_2
Revision 14:2d47b97c2028, committed 2014-12-08
- Comitter:
- jn80842
- Date:
- Mon Dec 08 19:52:15 2014 +0000
- Parent:
- 13:209da1dcb6e1
- Child:
- 15:236d90e38951
- Commit message:
- rewritten for memory issues/code clarity
Changed in this revision
| main.cpp | Show annotated file Show diff for this revision Revisions of this file |
--- a/main.cpp Wed Dec 03 00:14:32 2014 +0000
+++ b/main.cpp Mon Dec 08 19:52:15 2014 +0000
@@ -20,6 +20,14 @@
I2C i2c_right(D7,D6);
Adafruit_24bargraph ledbar_right=Adafruit_24bargraph(&i2c_right);
+void set_led(int index, int color) { // index range from 0-47
+ if (index<24) {
+ ledbar_left.setBar(index,color);
+ } else {
+ ledbar_right.setBar(index-24,color);
+ }
+}
+
DebounceIn upbutton(PTA16);
DebounceIn downbutton(PTC12);
DebounceIn leftbutton(PTC17);
@@ -42,9 +50,25 @@
//LCD stuff
-//extLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2);
+//TextLCD(PinName rs, PinName e, PinName d4, PinName d5, PinName d6, PinName d7, LCDType type = LCD16x2);
TextLCD lcd(PTC6,PTC5,D5,D4,D3,D2,TextLCD::LCD20x4);
+void lcd_write_selected_info(int selected) {
+ lcd.cls();
+ lcd.locate(0,0);
+ lcd.printf("The ToastBoard");
+ lcd.locate(0,1);
+ lcd.printf("Selected row: %d",selected);
+}
+
+void lcd_write_voltage_info(float vddval,int selected,float rowval) {
+ lcd.cls();
+ lcd.locate(0,1);
+ lcd.printf("Vdd: %1.1f V",vddval);
+ lcd.locate(0,0);
+ lcd.printf("Row %d: %1.1f V",selected+1,rowval);
+}
+
//WIFI STUFF
@@ -60,44 +84,107 @@
// plus wifi network SSID, password, security level and smart-configuration flag.
mbed_cc3000::cc3000 wifi(D8, D9, D10, SPI(D11, D12, D13),
- "SSID", "PASSWORD", WPA2, false);
+ "SSID", "PASSWORD", WPA2, false);
Websocket ws("ws://sockets.mbed.org/ws/toastboard/rw");
-
-// json encoding
-std::string s;
-std::string t;
-std::back_insert_iterator<std::string> json_str = std::back_inserter(t);
-char row[1] = ""; // holder for row tokens
-char rowvoltage[4] = ""; // holder for voltage values
-
-void jsoncopy(const std::string& s, std::back_insert_iterator<std::string> oi) {
- std::copy(s.begin(), s.end(), oi);
-}
-
void add_to_json(const std::string& s, std::back_insert_iterator<std::string> oi) {
- // this chunk of code lifted from the MbedJSONValue library
+ // this chunk of code lifted from the MbedJSONValue
+ char buf[7];
for (std::string::const_iterator i = s.begin(); i != s.end(); ++i) {
- switch (*i) {
-#define MAP(val, sym) case val: jsoncopy(sym, oi); break
- MAP('"', "\\\"");
- MAP('\\', "\\\\");
- MAP('/', "\\/");
- MAP('\b', "\\b");
- MAP('\f', "\\f");
- MAP('\n', "\\n");
- MAP('\r', "\\r");
- MAP('\t', "\\t");
-#undef MAP
- default:
- if ((unsigned char)*i < 0x20 || *i == 0x7f) {
- char buf[7];
- sprintf(buf, "\\u%04x", *i & 0xff);
- copy(buf, buf + 6, oi);
- } else {
- *oi++ = *i;
- }
- break;
+ if ((unsigned char)*i < 0x20 || *i == 0x7f) {
+ sprintf(buf, "\\u%04x", *i & 0xff);
+ copy(buf, buf + 6, oi);
+ } else {
+ *oi++ = *i;
+ }
+ }
+}
+
+std::string build_json(float vddval,int selected,float clientdata[48]) {
+ std::string s;
+ std::back_insert_iterator<std::string> json_str = std::back_inserter(s);
+ char row[1] = ""; // holder for row tokens
+ char rowvoltage[4] = ""; // holder for voltage values
+ add_to_json("{\"vddval\":",json_str);
+ sprintf(rowvoltage,"%.1f",vddval);
+ add_to_json(rowvoltage,json_str);
+ add_to_json(", \"selected\":",json_str);
+ sprintf(rowvoltage,"%d",selected);
+ add_to_json(", \"rows\": [",json_str);
+ int append_comma = 0;
+ for (int i= 0; i < 48; i++) {
+ if (clientdata[i] != 100.0) { // don't pass on floating row vals
+ if (append_comma == 1) {
+ add_to_json(",",json_str);
+ } else {
+ append_comma = 1;
+ }
+ add_to_json("{\"",json_str);
+ sprintf(row, "%d", i);
+ add_to_json(row,json_str);
+ add_to_json("\":",json_str);
+ sprintf(rowvoltage,"%.1f",clientdata[i]);
+ add_to_json(rowvoltage,json_str);
+ add_to_json("}",json_str);
+ }
+ }
+ add_to_json("]}",json_str);
+ return s;
+}
+
+bool voltages_equal(float voltage1,float voltage2) {
+ return (voltage1 > voltage2-0.01) && (voltage1 < voltage2+0.01);
+}
+
+void read_voltages(float voltages[48]) {
+ int sn = 0;
+ for (int x=0;x<2;x++) { // iterate over two columns of breadboard
+ for (int y=0;y<24;y++) { // iterate over 24 rows of each column
+ sn = (x*24)+y+1; // maybe?????
+ A_in = (sn-1)%2;
+ B_in = ((sn-1)/2)%2;
+ C_in = ((sn-1)/4)%2;
+ D_in = ((sn-1)/8)%2;
+ E_in = ((sn-1)/16)%2;
+ F_in = ((sn-1)/32)%2;
+
+ voltages[sn-1] = adc.read();
+ }
+ }
+}
+
+void compare_voltages(float voltages[48], float clientdata[48], int colselect, int rowselect, float vddval) {
+ // get selected row voltage
+ float rowval = voltages[(colselect*24)+rowselect];
+ for (int i=0;i<48;i++) {
+ int client_index = (colselect*24)+rowselect;
+ int sn = i+1;//(colselect+1)*(rowselect+1);
+ A_in = (sn-1)%2;
+ B_in = ((sn-1)/2)%2;
+ C_in = ((sn-1)/4)%2;
+ D_in = ((sn-1)/8)%2;
+ E_in = ((sn-1)/16)%2;
+ F_in = ((sn-1)/32)%2;
+
+ float in_val = adc.read();
+ if (!voltages_equal(voltages[i],in_val)) {
+ // this row is floating
+ set_led(i,LED_RED);
+ clientdata[client_index] = 100.0;
+ } else if (voltages_equal(voltages[i],vddval)) {
+ // this row matches vdd
+ set_led(i,LED_RED);
+ clientdata[client_index] = vddval;
+ } else if (voltages_equal(voltages[i],0.0)) {
+ // this row matches ground
+ set_led(i,LED_YELLOW);
+ clientdata[client_index] = 0.0;
+ } else if (voltages_equal(voltages[i],rowval)) {
+ // this row matches selected row
+ set_led(i,LED_GREEN);
+ clientdata[client_index] = rowval;
+ } else {
+ clientdata[client_index] = voltages[i];
}
}
}
@@ -107,11 +194,9 @@
{
//Scan init
-
- int con_mat[24][2] = {};
- float volt_mat[24][2] = {};
+ float originalvoltages[48] = {};
float clientdata[48] = {};
- float rowval = 0, vddval = 0;
+ float vddval = 0.0;
//LED init
int rowselect = 0, moved = 1, colselect = 0, selected = 0;
@@ -125,13 +210,9 @@
//LCD init
lcd.cls();
-
- // wifi init
+ int written = 0;
+
wifi.init();
- wifi.connect();
- // websocket init
- Websocket ws("ws://sockets.mbed.org/ws/toastboard/rw");
- ws.connect();
//Osci
int loopcount = 0, pressed = 0;
@@ -139,34 +220,38 @@
while(1) {
+ if (wifi.is_connected() == false) {
+ pc.printf("trying to connect to wifi\r\n");
+ if (wifi.connect() == -1) {
+ pc.printf("Failed to connect\r\n");
+ } else {
+ pc.printf("IP address: %s \r\n", wifi.getIPAddress());
+ }
+ } else {
+ Websocket ws("ws://sockets.mbed.org/ws/toastboard/rw");
+ ws.connect();
+ }
//Display
-
- if (colselect == 0 && moved == 1) {
+ if (moved ==1) {
ledbar_left.clear();
ledbar_right.clear();
- ledbar_left.setBar(rowselect,LED_GREEN);
+ set_led((colselect*24+rowselect),LED_GREEN);
ledbar_left.writeDisplay();
ledbar_right.writeDisplay();
- } else if (colselect == 1 && moved == 1) {
- ledbar_left.clear();
- ledbar_right.clear();
- ledbar_right.setBar(rowselect,LED_GREEN);
- ledbar_right.writeDisplay();
- ledbar_left.writeDisplay();
}
//Moving the selected row
if (upbutton.read() == 0) {
-
rowselect = rowselect-1;
moved = 1;
+ written = 0;
wait(0.75);
}
if (downbutton.read() == 0) {
-
rowselect = rowselect+1;
moved = 1;
+ written = 0;
wait(0.75);
}
@@ -174,17 +259,16 @@
colselect = 0;
ledbar_right.clear();
moved =1;
+ written = 0;
wait(0.75);
-
}
if (rightbutton.read() == 0) {
colselect = 1;
ledbar_left.clear();
moved =1;
+ written = 0;
wait(0.75);
-
-
}
//Boundary checking
@@ -207,164 +291,57 @@
vddval = adc.read();
- //SET MULTIPLEXER TO READ SELECTED ROW
- // Sample the 'selected' node
-
- int sn = (colselect + 1)*(rowselect + 1);
- A_in = (sn-1)&2;
- B_in = ((sn-1)/2)%2;
- C_in = ((sn-1)/4)%2;
- D_in = ((sn-1)/8)%2;
- E_in = ((sn-1)/16)%2;
- F_in = ((sn-1)/32)%2;
- rowval = adc.read();
-
ledbar_left.clear();
ledbar_right.clear();
- for (int u = 0; u < 2; u++) {
-
- for (int x = 0; x < 2; x++) {
- for (int y = 0; y < 24; y++) {
-
-
- int sn = (colselect+1)*(rowselect+1);
- A_in = (sn-1)&2;
- B_in = ((sn-1)/2)%2;
- C_in = ((sn-1)/4)%2;
- D_in = ((sn-1)/8)%2;
- E_in = ((sn-1)/16)%2;
- F_in = ((sn-1)/32)%2;
-
- float in_val = adc.read();
-
-
- if (u == 0) {
- old_volt_map[x][y] = in_val
- } else {
- volt_map[x][y] = in_val
- if (old_volt_map[x][y] != volt_map[x][y] ) {
- volt_map[x][y] = 100;
- }
- if (x == 1) {
- int z = y+24;
- clientdata[z] = in_val;
- } else {
- clientdata[y] = in_val;
- }
+ // first set of voltages read into old_volt_mat
+ read_voltages(originalvoltages);
+ // second set for comparison, read into clientdata
+ compare_voltages(originalvoltages,clientdata,colselect,rowselect,vddval);
-
- if ((in_val > vddval-0.01) && (in_val < vddval+0.01)) {
- con_mat[x][y] = 2;
- if (x == 0) {
- ledbar_left.setBar(y,LED_RED);
- } else {
- ledbar_right.setBar(y,LED_RED);
- }
- } else if (in_val == 0) {
- con_mat[x][y] = 3;
- if (x == 0) {
- ledbar_left.setBar(y,LED_YELLOW);
- } else {
- ledbar_right.setBar(y,LED_YELLOW);
- }
- } else if ((in_val > rowval-0.01) && (in_val < rowval+0.01)) {
- con_mat[x][y] = 1;
- if (x == 0) {
- ledbar_left.setBar(y,LED_GREEN);
- } else {
- ledbar_right.setBar(y,LED_GREEN);
- }
- }
- else if (volt_mat[x][y]==100) {
- con_mat[x][y] = 4;
- if (x == 0) {
- ledbar_left.setBar(y,LED_OFF);
- } else {
- ledbar_right.setBar(y,LED_OFF);
- }
- }
- else {
- con_mat[x][y] = 0;
- }
+ selected = rowselect;
+ if (colselect == 1) {
+ selected = selected+24;
+ }
- }}} //END OF ROWSCAN FOR LOOP
-
- selected = rowselect;
- if (colselect == 1) {
- selected = selected+24;
- }
-
-
- //STUFF INTO JSON FORMAT
- add_to_json("{\"vddval\":",json_str);
- sprintf(rowvoltage,"%.f",vddval);
- add_to_json(rowvoltage,json_str);
- add_to_json(", \"selected\":",json_str);
- selected = rowselect;
- sprintf(rowvoltage,"%d",selected);
- add_to_json(", \"rows\": [",json_str);
-
- char str[1];
- for (int i= 0; i < 48; i++) {
- if (i != 0) {
- add_to_json(",",json_str);
- }
- add_to_json("{\"",json_str);
- sprintf(str, "%d", i);
- add_to_json(str,json_str);
- add_to_json("\":",json_str);
- sprintf(rowvoltage,"%.f",clientdata[i]);
- add_to_json(rowvoltage,json_str);
- add_to_json("}",json_str);
- }
-
-
-
- moved = 0;
-
+ written = 0;
+ moved = 0;
//DEBUGGING TOOLS //////////////
- pc.printf("\r\n%1.3f %1.3f \r\n", vddval, rowval);
- for (int i = 0; i<48; i++) {
- pc.printf(" %1.3f ", clientdata[i]);
- }
- pc.printf(" \r\n \r\n ");
- for (int x = 0; x < 2; x++) {
- for (int y = 0; y < 24; y++) {
- pc.printf("%1.3f \r\n", volt_mat[x][y]);
- }
- }
- ////////////////////////
+ pc.printf("\r\n%1.3f %1.3f \r\n", vddval, clientdata[selected]);
+ for (int i = 0; i<48; i++) {
+ pc.printf(" %1.3f ", clientdata[i]);
+ }
+ pc.printf(" \r\n \r\n ");
+ for (int x = 0; x < 48; x++) {
+ pc.printf("%1.3f \r\n", originalvoltages[x]);
+ }
+ ////////////////////////
- wait(1); //THIS NEEDS TO GO AWAY! :}
+ wait(1); //THIS NEEDS TO GO AWAY!
} // END OF SCANBUTTON IF STATEMENT
- if (moved==0) {
+ if (moved==0 && written == 0) {
ledbar_left.writeDisplay();
ledbar_right.writeDisplay();
- lcd.cls();
- lcd.locate(0,1);
- lcd.printf("Vdd: %1.1f V",vddval);
- lcd.locate(0,0);
- lcd.printf("Row %d: %1.1f V",selected,rowval);
+ lcd_write_voltage_info(vddval,selected+1,clientdata[selected]);
// send data to websocket
- char * writable = new char[t.size() + 1];
- std::copy(t.begin(), t.end(), writable);
- writable[t.size()] = '\0';
- ws.send(writable);
- delete[] writable;
- } else {
- lcd.cls();
- string programname = "The ToastBoard";
- string instructions = "Select a row";
- lcd.locate(0,0);
- lcd.printf("%s",programname.c_str());
- lcd.locate(0,1);
- lcd.printf("%s",instructions.c_str());
+ if (wifi.is_connected()) {
+ std::string json = build_json(vddval,selected,clientdata);
+ char * writable = new char[json.size() + 1];
+ std::copy(json.begin(), json.end(), writable);
+ writable[json.size()] = '\0';
+ ws.send(writable);
+ delete[] writable;
+ delete[] &json;
+ }
+ written = 1;
+ } else if (written == 0) {
+ lcd_write_selected_info(selected);
+ written = 1;
}
@@ -392,12 +369,12 @@
add another "for" around the two for the 48 row checker:
if (u == 0){
- old_volt_map[x,y] = in_val
+ old_volt_mat[x,y] = in_val
}
else{
- volt_map[x,y] = in_val
- if (old_volt_map[x,y] != volt_map[x,y] ) {
- volt_map[x,y] = 100;
+ volt_mat[x,y] = in_val
+ if (old_volt_mat[x,y] != volt_mat[x,y] ) {
+ volt_mat[x,y] = 100;
}
PUT ALL ROW LIGHTING (CON_MAT) STUFF HERE