Eric Glunn
Contains all code needed for analog digital and oscope
Diff: main.cpp
- Revision:
- 8:d3ffe55fd5f6
- Parent:
- 7:60e993355f76
--- a/main.cpp Thu Apr 23 02:49:56 2020 +0000
+++ b/main.cpp Tue Apr 28 21:02:07 2020 +0000
@@ -10,211 +10,31 @@
#define pinMask 0b00011111
#define FULL 0b11111111
-#define pin1 0b00010000 //digital and analog masks
-#define pin2 0b00001000
-#define pin3 0b00000100
-#define pin4 0b00000010
-#define pin5 0b00000001
-
-#define ms1 0b00000000 //Oscope masks
-#define ms5 0b00000001
-#define ms10 0b00000010
-#define ms50 0b00000011
-#define ms100 0b00000100
-#define ms250 0b00000101
-#define ms500 0b00000110
-#define ms1000 0b00000111
-#define rise 0b00010000
-#define fall 0b00000000
-#define timeMask 0b00000111
-#define triggerType 0b00010000
-#define triggerVolt 0b00001000
-#define volt11 0b00000000
-#define volt22 0b00001000
DigitalOut myled(LED1);
-DigitalOut DigitalStatus(LED2); //Led for when Digital read is running
-DigitalOut AnalogStatus(LED3); //LED for when Analog read is running
-DigitalOut oScopeStatus(LED4); //LED for Oscilloscope
-
-DigitalIn d1(p21); //Always set these pins for digital in
-DigitalIn d2(p22);
-DigitalIn d3(p23);
-DigitalIn d4(p24);
-DigitalIn d5(p25);
-AnalogIn a1(p16); //Always set these pins for analog in
-AnalogIn a2(p17);
-AnalogIn a3(p18);
-AnalogIn a4(p19);
-AnalogIn a5(p20);
-
+AnalogIn a1(p16); //SDA
+InterruptIn i1(p15); //SCL
-Serial PC(USBTX,USBRX);
-Ticker tickerboi; //Initialize the ticker for Sampling
+volatile bool I2CRunning=false;
+volatile bool newI2CData=false;
+Ticker I2C_ticker;
-Ticker oScopeTicker;
-Ticker oScopeCut;
-
-volatile unsigned char DigitalSample;
-volatile unsigned char AnalogSample[5];
volatile unsigned char command;
volatile unsigned char state;
-
-volatile bool newDigital=false;
-volatile bool newAnalog=false;
-
-volatile unsigned char oScopeTime;
-volatile bool oScope_poll;
-volatile bool newoScope=false;
-volatile unsigned char oScopeArray[20000];
-volatile int oScopeCount=0;
-volatile unsigned char oScopeTriggerType;
-volatile unsigned char oScopeTriggerVoltageBit;
-volatile unsigned char oScopeTriggerVoltageVal;
-
-volatile bool analogRunning;
-volatile bool oScopeRunning;
-volatile bool digitalRunning;
+Serial PC(USBTX,USBRX);
-void digital_sample_func(void) //sampling function, samples each pin specified and Ors it
-{
- DigitalSample = digital;
-
- if( (command & pin1) == pin1) {
- DigitalSample=DigitalSample + d1*pin1;
- }
- if( (command & pin2) == pin2) {
- DigitalSample=DigitalSample + d2*pin2;
- }
- if( (command & pin3) == pin3) {
- DigitalSample=DigitalSample + d3*pin3;
- }
- if( (command & pin4) == pin4) {
- DigitalSample=DigitalSample + d4*pin4;
- }
- if( (command & pin5) == pin5) {
- DigitalSample=DigitalSample + d5*pin5;
- }
- newDigital=true;
-}
-
-
-void analog_sample_func(void)
-{
- for(int i=0; i<5; i++) {
- AnalogSample[i]=0;
- }
- if( (command & pin1) == pin1) {
- AnalogSample[0]=a1*254;
- }
- if( (command & pin2) == pin2) {
- AnalogSample[1]=a2 * 254;
- }
- if( (command & pin3) == pin3) {
- AnalogSample[2]=a3*254;
- }
- if( (command & pin4) == pin4) {
- AnalogSample[3]=a4*254;
- }
- if( (command & pin5) == pin5) {
- AnalogSample[4]=a5*254;
- }
- newAnalog=true;
-}
-
-
-void oScope_kill_func(void)
-{
- oScopeTicker.detach();
- oScopeCut.detach();
- newoScope=true;
- oScopeRunning=0;
+void I2C_state_machine(void){
+ //Implement the state machine here to record address, data, R/W, ACK
}
-void oScope_sample_func(void){
- oScopeArray[oScopeCount++]=a1*254;
+void I2C_sample_func(void){
+ //This function will sample the SDA line every 10uS
}
-void oScope_poll_trig(){
- bool nTriggered = true;
- myled=1;
- unsigned char trig;
- int state =0;
- if(oScopeTriggerVoltageBit == volt11){oScopeTriggerVoltageVal=85;}
- else{oScopeTriggerVoltageVal=169;}
-
- while(nTriggered){
-
- trig=a1*254;
- switch(state){
-
- case 0:
- if((trig < oScopeTriggerVoltageVal) & (oScopeTriggerType == rise) ){state = 1;}
- else if((trig > oScopeTriggerVoltageVal) & (oScopeTriggerType == fall) ){state = 2;}
- else { state = 0;}
- break;
- case 1:
- if(trig < oScopeTriggerVoltageVal){state=1;}
- if(trig > oScopeTriggerVoltageVal){state=3;}
- break;
- case 2:
- if(trig > oScopeTriggerVoltageVal){state = 2;}
- if(trig < oScopeTriggerVoltageVal){state = 3;}
- break;
- case 3:
- nTriggered=false;
- break;
- }
- wait(.01);
- }
- myled=0;
- switch(oScopeTime) {
-
- case ms1:
- oScopeCut.attach(oScope_kill_func, .001);
- break;
-
- case ms5:
- oScopeCut.attach(oScope_kill_func, .005);
- break;
-
- case ms10:
- oScopeCut.attach(oScope_kill_func, .01);
- break;
-
- case ms50:
- oScopeCut.attach(oScope_kill_func, .05);
- break;
-
- case ms100:
- oScopeCut.attach(oScope_kill_func, .1);
- break;
-
- case ms250:
- oScopeCut.attach(oScope_kill_func, .25);
- break;
-
- case ms500:
- oScopeCut.attach(oScope_kill_func, .5);
- break;
-
- case ms1000:
- oScopeCut.attach(oScope_kill_func, 1);
- break;
- default:
- oScopeCut.attach(oScope_kill_func, .01);
- break;
- }
-
- oScopeTicker.attach_us(oScope_sample_func, 50);
-
-}
-
-
void SerialInterrupt(void)
{
command=PC.getc();
@@ -222,73 +42,40 @@
switch(state) {
case reset:
- tickerboi.detach(); //detach Ticker
- digitalRunning=0; //turn off status LED
- analogRunning=0;
+
+ I2CRunning=false;
+ I2C_ticker.detach();
+ volatile bool newI2CData=true;
- if(oScopeRunning){
- oScope_kill_func();
- }
break;
-
- case digital:
- tickerboi.attach(&digital_sample_func, .5);
- digitalRunning=1; // turn on status LED
- break;
-
- case analog:
- tickerboi.attach(&analog_sample_func, .5);
- analogRunning=1;
+
+ case I2C:
+ I2CRunning=true;
+ I2C_ticker.attach_us(I2C_sample_func, 10);
+
break;
+
+ }
- case oScope:
- oScopeTime=command & timeMask;
- oScope_poll=true;
- oScopeRunning=1;
- oScopeTriggerType= command & triggerType;
- oScopeTriggerVoltageBit = command & triggerVolt;
- break;
- }
+
}
int main()
{
PC.attach(&SerialInterrupt, Serial::RxIrq);
-
+ i1.rise(&I2C_state_machine); //here is the interrupt that will call the state machine
while(1) {
-
- DigitalStatus=digitalRunning;
- AnalogStatus=analogRunning;
- oScopeStatus=oScopeRunning;
-
- if(newDigital) { //if digital sampling was run
- PC.putc(DigitalSample);
- newDigital=false;
+
+ while(I2CRunning){ //Hang here and do nothing
+
+
+ }
+ if(newI2CData){
+ //I2C done running send the data to PC
}
- if(newAnalog) { //if analog sampling was run
- PC.putc(FULL); //First bit is 0b01000000
- for(int i=0; i<5; i++) { //Send all of the analog bits
- PC.putc(AnalogSample[i]);
- }
- PC.putc(command); //Last bit is command from PC
- newAnalog=false;
- }
-
- if(oScope_poll){
- oScope_poll=false;
- oScope_poll_trig(); }
-
- if(newoScope){
- PC.putc(FULL);
- for(int j=0; j<oScopeCount; j++){
- PC.putc(oScopeArray[j]);
- }
- oScopeCount=0;
- newoScope=false;
- }
myled = 1; //indicate main loop is running