Revision 0:72ec745e12dc, committed 2018-08-29

Comitter:

MaximGordon

Date:

Wed Aug 29 00:01:12 2018 +0000

Commit message:

maxim ESD demo

Changed in this revision

diff -r 000000000000 -r 72ec745e12dc main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Wed Aug 29 00:01:12 2018 +0000
@@ -0,0 +1,87 @@
+#include "mbed.h"
+
+#define ACC_MAX 20000   //20000 is equivalent to 1V DAC output
+#define ADC_MAX 3.2 //if 5Gohm/1Mohm resistor divider is used, ADC=3.2V is equivalent to 16000kV
+
+Ticker ADC;
+
+DigitalOut protection_relay_D6(PB_1);
+DigitalOut protection_relay_D12(PA_6);
+DigitalOut zap_control_D8(PB_2);
+DigitalIn turbo_D11(PA_7);
+InterruptIn button_D2(PD_14);
+AnalogOut aout(PA_4);
+PwmOut motor_control_D10(PA_2);
+
+unsigned acc;
+AnalogIn ain(A0);
+
+void ADC_convert()
+{
+    printf("%i",ain.read_u16());
+}
+
+void incr() {
+    if(acc>=ACC_MAX)
+        acc=ACC_MAX;
+    else
+    {
+        if(acc<4000)
+            acc+=1000;
+        else if(acc<8000)
+            acc+=800;
+        else if(acc<10000)
+            acc+=600;
+        else
+            acc+=500;
+    }
+}
+
+int main()
+{
+    acc=0;
+    motor_control_D10.period_ms(10);    //PWM with 50ms period
+    motor_control_D10=0.2;
+    button_D2.fall(&incr);
+    
+    protection_relay_D6=1;  //relay closed
+    protection_relay_D12=1; //relay closed
+    
+    //ADC.attach(&ADC_convert, 0.2);  //Do ADC convertion every 200ms
+    
+    while(1) {
+        wait(0.2); // 200 ms
+        if(acc<=0)
+            acc=0;
+        else
+            if(acc<1000)
+                acc=0;
+            else
+                acc-=1000;
+        if(turbo_D11==1)
+            aout.write_u16(ACC_MAX);
+        else
+            aout.write_u16(acc);
+        
+        int ADC_reading=ain.read_u16();
+        motor_control_D10=(0.2+0.8*((float)ADC_reading/65536*3.3/ADC_MAX)); //set motor speed
+        if((ADC_reading/65536*3.3)>ADC_MAX) //if MAX voltage is reached
+        {
+            protection_relay_D6=0;  //cut off relay connection
+            protection_relay_D12=0; //cut off relay connection
+            wait_ms(10);    //wait 10ms for relay to disconnect completely
+            zap_control_D8=1;  //ZAP!
+            wait_ms(5); //wait for Zap to happen
+            acc=0;
+            aout.write_u16(acc);    //discharge HV generator
+            zap_control_D8=0;  //disconnect CAN bus from HV generator
+            wait_ms(5);
+            protection_relay_D6=1;
+            protection_relay_D12=1;
+        }
+        
+        while(turbo_D11==1);    //wait until turbo button is released
+            
+        printf("%i\n\r", ADC_reading);  //send ADC data to GUI
+    }
+}

diff -r 000000000000 -r 72ec745e12dc mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Wed Aug 29 00:01:12 2018 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/a7c7b631e539
\ No newline at end of file