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| author | RossTheRoss <msattr@gmail.com> | 2020-03-21 14:42:49 -0500 |
|---|---|---|
| committer | RossTheRoss <msattr@gmail.com> | 2020-03-21 14:42:49 -0500 |
| commit | 5178d116044f64b409b17ef026be88b44a00e84d (patch) | |
| tree | 9097374dd25c53379b7c1e5f34fa0e0f54bf8992 /HW3.X/strap012_hw3prob3.c | |
| parent | Do HW3 (diff) | |
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Do HW3
Diffstat (limited to '')
| -rw-r--r-- | HW3.X/strap012_hw3prob3.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/HW3.X/strap012_hw3prob3.c b/HW3.X/strap012_hw3prob3.c new file mode 100644 index 0000000..259f101 --- /dev/null +++ b/HW3.X/strap012_hw3prob3.c @@ -0,0 +1,78 @@ +#include <xc.h>
+
+// PIC24FJ64GA002 Configuration Bit Settings
+
+// CONFIG2
+#pragma config POSCMOD = NONE // Primary Oscillator Select (Primary oscillator disabled)
+#pragma config I2C1SEL = PRI // I2C1 Pin Location Select (Use default SCL1/SDA1 pins)
+#pragma config IOL1WAY = OFF // IOLOCK Protection (IOLOCK may be changed via unlocking seq)
+#pragma config OSCIOFNC = OFF // Primary Oscillator Output Function (OSC2/CLKO/RC15 functions as CLKO (FOSC/2))
+#pragma config FCKSM = CSECME // Clock Switching and Monitor (Clock switching is enabled, Fail-Safe Clock Monitor is enabled)
+#pragma config FNOSC = FRCPLL // Oscillator Select (Fast RC Oscillator with PLL module (FRCPLL))
+#pragma config SOSCSEL = SOSC // Sec Oscillator Select (Default Secondary Oscillator (SOSC))
+#pragma config WUTSEL = LEG // Wake-up timer Select (Legacy Wake-up Timer)
+#pragma config IESO = ON // Internal External Switch Over Mode (IESO mode (Two-Speed Start-up) enabled)
+
+// CONFIG1
+#pragma config WDTPS = PS32768 // Watchdog Timer Postscaler (1:32,768)
+#pragma config FWPSA = PR128 // WDT Prescaler (Prescaler ratio of 1:128)
+#pragma config WINDIS = ON // Watchdog Timer Window (Standard Watchdog Timer enabled,(Windowed-mode is disabled))
+#pragma config FWDTEN = OFF // Watchdog Timer Enable (Watchdog Timer is disabled)
+#pragma config ICS = PGx1 // Comm Channel Select (Emulator EMUC1/EMUD1 pins are shared with PGC1/PGD1)
+#pragma config GWRP = OFF // General Code Segment Write Protect (Writes to program memory are allowed)
+#pragma config GCP = OFF // General Code Segment Code Protect (Code protection is disabled)
+#pragma config JTAGEN = OFF // JTAG Port Enable (JTAG port is disabled)
+
+// To test: Window > Simulator > Stimulus. Click on the Pin / Register Actions.
+// Click on the top row where it says "Click here to add/remove signals", and add IC1
+// (or RB6). Add entries that change the signal to 1 at time 1000, to zero at 1100, and so on.
+// You may want to check the checkbox that says "Repeat from action".
+
+volatile unsigned int dutyCycle = 0; // positive or negative
+
+void __attribute__((__interrupt__,__auto_psv__)) _IC1Interrupt(void)
+{
+ static unsigned int last = 0;
+ unsigned int current;
+ _IC1IF = 0;
+
+ current = IC1BUF;
+ if (current > last)
+ dutyCycle = current - last;
+ else
+// dutyCycle = ((long)(1<<16) + current) - last;
+ dutyCycle = ((long)(PR3+1) + current) - last;
+
+ last = current;
+}
+
+void setup()
+{
+ CLKDIVbits.RCDIV = 0;
+ AD1PCFG = 0x9fff; // For digital I/O. If you want to use analog, you'll
+ // need to change this.
+ _TRISB6 = 1;
+ __builtin_write_OSCCONL(OSCCON & 0xbf); // unlock PPS
+ _IC1R = 6 ; //IC! <- RB6; See Table 10-2 on P108 of the datasheet
+ __builtin_write_OSCCONL(OSCCON | 0x40); // lock PPS
+
+ T3CON = 0;
+ PR3 = 65535;
+ TMR3 = 0;
+ _T3IF = 0;
+ T3CON = 0x8000;
+
+ IC1CON = 1; // every edge
+ _IC1IF = 0;
+ _IC1IE = 1;
+}
+
+int main(void)
+{
+ int count=0;
+ setup();
+
+ while (1){
+ count++;
+ }
+}
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