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#include <msp430.h>
/* * main.c */ volatile unsigned long doublemillis = 0; volatile unsigned int j = 0; const unsigned int brainFq[8][63] = { {1,15,14,13,12,11,10,9,8,7,6,5,4,7,6,5,4,6,5,4,5,6,7,8,9,10,11,12,13,14,15,}, {1,14,13,15,12,11,14,11,10,9,11,9,8,7,10,7,6,5,7,6,8,5,8,7,9,11,10,12,}, {1,15,14,13,12,14,11,10,9,8,11,10,9,8,9,8,9,10,8,10,9,8,9,10,11,12,13,10,15,10,11,10,11,12}, {1,12,14,11,13,12,10,9,8,7,6,5,4,8,7,6,5,4,7,6,5,4,7,6,5,4,5,6,7,8,9,12,10,11,12,15,12,15,12,}, {1,12,14,11,13,12,10,9,8,7,6,5,4,8,7,6,5,4,7,6,5,4,7,6,5,4,5,6,7,8,9,12,10,11,12,15,12,15,12,}, {1,12,14,11,13,12,10,9,8,7,6,5,4,8,7,6,5,4,7,6,5,4,7,6,5,4,5,6,7,8,9,12,10,11,12,15,12,15,12,}, {1,12,14,11,13,12,10,9,8,7,6,5,4,8,7,6,5,4,7,6,5,4,7,6,5,4,5,6,7,8,9,12,10,11,12,15,12,15,12,}, {1,10,1,1,1,1,1,1,1,1,1,1,1,1,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,} }; const unsigned int brainDuration[8][63] = { {0,20,20,20,20,20,20,20,30,30,30,30,40,5,10,20,40,5,10,30,5,5,5,5,5,5,5,5,5,5,25,}, {1,15,15,5,15,15,5,15,15,15,5,15,15,15,3,15,10,10,5,10,5,10,5,10,10,5,15,15,}, {2,15,15,15,15,10,20,20,20,20,5,5,10,10,10,10,10,10,10,5,10,10,10,20,20,20,20,10,15,10,10,10,10,30,}, {3,5,15,10,5,10,8,10,10,12,5,4,15,5,5,10,10,10,5,5,5,10,15,5,5,5,5,5,5,10,10,10,5,5,15,5,10,5,25,}, {4,5,15,10,5,10,8,10,10,12,5,4,15,5,5,10,10,10,5,5,5,10,15,5,5,5,5,5,5,10,10,10,5,5,15,5,10,5,25,}, {5,5,15,10,5,10,8,10,10,12,5,4,15,5,5,10,10,10,5,5,5,10,15,5,5,5,5,5,5,10,10,10,5,5,15,5,10,5,25,}, {6,5,15,10,5,10,8,10,10,12,5,4,15,5,5,10,10,10,5,5,5,10,15,5,5,5,5,5,5,10,10,10,5,5,15,5,10,5,25,}, {7,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,}, }; const unsigned int ArrayLength[8] = {31,28,34,39,39,39,39,39,}; volatile unsigned int on = 0; Declaration of functions unsigned int FreqTime(unsigned int Hz); unsigned int FreqCycle(unsigned int Hz , unsigned long speed); unsigned long millis(); unsigned long blinkms(unsigned long Millis); unsigned int CountByTime(unsigned long duration, unsigned int ArrayLength); MAIN program int main(void) {
// Set Watchdog as timer with an interrupt every 0.5ms BCSCTL1 = CALBC1_1MHZ; DCOCTL = CALDCO_1MHZ; WDTCTL = WDT_MDLY_0_5; // (WDTPW+WDTTMSEL+WDTCNTCL+WDTIS1) /* 0.5ms IFG1 &= ~WDTIFG; IE1 |= WDTIE; // Enable WDT interrupt P1SEL = 0x00; // Set all Pins to GPIO Pins, no clock sources, nothing P1SEL2 = 0x00; // Set all Pins to GPIO Pins, no clock sources, nothing P2SEL = 0x00; P2SEL2 = 0x00; P3SEL = 0x00; P3SEL2 = 0x00; P1DIR = 0xCF; // Set P1.0 - P1.3 as output P1.4 - P1.5 as input and P1.6 - P1.7 as output P1REN = 0x30; // Set P1.4 - P1.5 pull down resistor
P1OUT = 0x00; Set P1.0 - P1.7 to 0 P2DIR = 0xF8; Set P2.0 - P2.2 as Intput and P2.3 - P2.7 as Output
P2REN = 0x07; // Set P2.0 - P2.2 pull down resistor P2OUT = 0x00; // Set P2.0 - P2.7 to 0 P3DIR = 0xFF; P3OUT = 0x00;
Timer_A TA0CCR0 = 1250; Count limit for 400Hz at !MHz (1000000 / 400 / 2)
TA0CCTL0 = 0x10; // Enable Timer A0 interrupts, bit 4=1 TA0CTL = TASSEL_2 + MC_1; // Timer A0 with SMCLK, count UP TA1CCR0 = 1250; // Count limit for 400Hz predefinitoin, will be overwriten later TA1CCTL0 = 0x10; // Enable Timer A0 interrupts, bit 4=1 TA1CTL = TASSEL_2 + MC_1; // Timer A1 with SMCLK, count UP _EINT(); //enable interrupts
convert input of PIN 2.0 - 2.2 to programnumber. Onöy once at startup. So no switching during program volatile int ProgNo = P2IN & 0x07; Endless loop while(1){
j = CountByTime(brainDuration[ProgNo][j], ArrayLength[ProgNo]);
if (j < ArrayLength[ProgNo]){
on = blinkms(FreqTime(brainFq[ProgNo][j]));
TA1CCR0 = FreqCycle(brainFq[ProgNo][j]+400, 1000000);
int brightness = ((P1IN & 0x30) >> 4)+5; // brightness encoded on switches on PIN 1.4 and 1.5
if (on){
for (int i = 0; i < 10; i++){
// poor mans PWM
if (i<brightness){
P1OUT |= 0x03;
}
else{
P1OUT &= 0xFC;
}
}
}
else{
P1OUT &= 0xFC;
}
}
else{
P1DIR = 0xFF; // Set P1.0 - P1.7 as output
P2DIR = 0xFF; // Set P2.0 - P2.7 as output
P1OUT = 0x00; P2OUT = 0x00;
__dint(); _BIS_SR(LPM4_bits); } }
return 0; }
Functions blink in the rhythm of given ms unsigned long blinkms(unsigned long Millis){
static unsigned long PreviousMillis = 0;
static unsigned int back = 0;
unsigned long CurrentMillis = millis();
if (CurrentMillis - PreviousMillis >= Millis){
PreviousMillis = CurrentMillis;
back ^= 0x01;
}
return back;
} count 1 up, if time in ms done unsigned int CountByTime(unsigned long duration, unsigned int ArrayLength){ static unsigned long PreviousMillis = 0; static unsigned int back = 0; unsigned long Millis = duration * 1000; unsigned long CurrentMillis = millis(); if (CurrentMillis - PreviousMillis >= Millis){ PreviousMillis = CurrentMillis; if (back ⇐ ArrayLength) back++; } return back; } Convert frequency to ms unsigned int FreqTime(unsigned int Hz){
unsigned int v = 1000 / Hz / 2; return v;
} Convert frequency to Cycles by given Clockspeed unsigned int FreqCycle(unsigned int Hz, unsigned long speed){ unsigned int v = speed / Hz / 2; return v; } Function that is reuturning ms since startup unsigned long millis(){
return doublemillis >> 1; // Double Millisecondy divided by 2
}
#pragma vector=TIMER0_A1_VECTOR Timer1 A0 interrupt service routine __interrupt void Timer1_A0 (void) { P1OUT ^= 0x08; Toggle output P1.3 }