//MCP4801 SPI DAC..
void SPIDACworker(void)
{
unsigned char token, instruction, fInst=0,fb=0,bf=0;
initSPI();
SSP2BUF = 0xFD;
enableDAC();
//DACOE =0;
while (1)
{
while(PORTCbits.RC0 ==0)//CS LOW
{
if(SSP2STATbits.BF) // we received something :)
{
bf=1;
if(fb)
{
setDAC(SSP2BUF);
}
else
{
fb=1;
if(SSP2BUF&0b00010000)DACOE =1;//DAC on
else DACOE =0; //DACoff
}
SSP2BUF = DACCON1&0x1F;
}
}
if(bf) //CS HIGH
{
fb=0;
bf=0;
}
}
}
/* Your code will start executing here */
int main(void)
{
/* Call the peripheral setup functions */
setupDAC();
enableDAC();
setupGPIO();
if (energyEfficient) {
setupLETimer(); //We don't supply a period here because we want the default value
enableLETimer();
}
else {
setupNormalTimer(HIGH_ENERGY_FREQUENCY / BITRATE);
}
/* Enable interrupt handling */
setupNVIC();
/* TODO for higher energy efficiency, sleep while waiting for interrupts
instead of infinite loop for busy-waiting
*/
if (energyEfficient) *SCR = 6;
else __asm("wfi");
return 0;
}
void UARTworker(void)
{
unsigned char c,mode=0,addr=0,instruction=0,EEaddrF=0,EEaddr=0,adcc=0,helpC;
initUART();
//write start message (menu)
UARTwriteString(msgMenu[0]);
UARTwrite('\n');
while(1)
{
if(RCIF)
{
RCIF=0;
LED2ON;
if(!(RCSTA&0b00000110))
{ rhead++;
rhead&=RINGBUFFMASK;
ringbuff[rhead]=RCREG;
}
LED2OFF;
c=UARTread();
UARTwrite(c);
//c=UARTcharFromString(c);
switch (mode)
{
case 0:
mode=c-48;
UARTwriteString(msgMenu[c-48]);
if(mode==2)enablePWM();
else if(mode==3)enableDAC();
break;
case 1://ADC
switch(c)
{
case 'r'://single read
UARTwriteString("\n\nADC value: ");
helpC=getADC(adcc);
UARTwriteDecimal(helpC);
UARTwriteString(msgMenu[1]);
break;
case '1'://chanell one
UARTwriteString("\n\nchannel 1 selected");
adcc=0;
UARTwriteString(msgMenu[1]);
break;
case '2'://chanel two
UARTwriteString("\n\nchannel 2 selected");
adcc=1;
UARTwriteString(msgMenu[1]);
break;
case '3'://chanell three
UARTwriteString("\n\nchannel 3 selected");
adcc=2;
UARTwriteString(msgMenu[1]);
break;
case 't'://temp
UARTwriteString("\n\nTemp sensor selected");
adcc=3;
UARTwriteString(msgMenu[1]);
break;
case 'm'://back to start
mode = 0;
UARTwriteString(msgMenu[0]);
break;
default:
break;
}
break;
case 2://PWM
if(instruction)
{
switch(instruction)
{
case 'p':
//pwm period = c;
setPeriod(UARTcharFromString(c));
UARTwriteString(msgMenu[2]);
break;
case 'd':
setDuty(UARTcharFromString(c));
UARTwriteString(msgMenu[2]);
//pwm period =c;
break;
case 'm':
mode =0;
//pwm off
UARTwriteString(msgMenu[0]);
break;
default:
break;
}
instruction = 0;
}
else
{
instruction = c; //loads the instruction
if(instruction == 'p')
{
UARTwriteString("\n\nEnter the PWM Period: ");
}
else if(instruction == 'd')
{
UARTwriteString("\n\nEnter the PWM Duty Cycle: ");
}
else if(instruction == 'm') //if it's m goes back to the start menu...
{
mode =0;
instruction =0;
disablePWM();
UARTwriteString(msgMenu[0]);
}
}
break;
case 3://DAC
if(instruction)
{
switch(instruction)
{
case 'v': //enter woltage
setDAC(UARTcharFromString(c));
UARTwriteString(msgMenu[3]);
break;
case 'm':
mode = 0;
UARTwriteString(msgMenu[0]);
break;
default:
break;
}
instruction =0;
}
else
{
instruction = c; //loads the instruction
if(instruction == 'v')
{
UARTwriteString(msgDACsetV);
}
else if(instruction == 'm') //if it's m goes back to the start menu...
{
mode =0;
instruction =0;
disableDAC();
UARTwriteString(msgMenu[0]);
}
}
break;
case 4://MEM
if(instruction) //if instruction has been sent previusly
{
if(EEaddrF) //instruction was sent previusly, check if address was sent
{ //address was sent
if(instruction == 'w') //if instruction was W-writes recived character to EEProm[ADDR]
{
EEPROMwrite(EEaddr,UARTcharFromString(c));
UARTwriteString(msgMenu[4]);
//write c to eeprom
}
else if (instruction == 'r') //if instruction was R-reads EEprom[addr] from eeprom
{
UARTwriteDecimal(EEPROMread(EEaddr));
UARTwriteString(msgMenu[4]);
}
else if (instruction == 'm') //if instruction was m --returns to start menu...
{
mode = 0;
UARTwriteString(msgMenu[0]);
}
EEaddrF=0; //clears the addressing flag
instruction =0; //clears the istruction flag
}
else
{
EEaddrF=1; //sets the address flage
EEaddr=UARTcharFromString(c);
if(instruction=='w')UARTwriteString(msgEEw);
else if(instruction == 'r')UARTwriteString("\n\nHit any key to read from EEPROM.\n\n");
}
}
else
{
instruction = c; //loads the instruction
if((instruction == 'w')||(instruction == 'r'))
{
UARTwriteString(msgEEaddr);
}
else if(instruction == 'm') //if it's m goes back to the start menu...
{
mode =0;
instruction =0;
UARTwriteString(msgMenu[0]);
}
}
break;
default:
mode=0;
UARTwriteString(msgMenu[0]);
break;
}
}
}
}
