//-----------------------------------------------------------------------------
// updateDisplay - updates one digit per execution, runs every 1ms
// executed from main()
void updateDisplay(void)
{
switch(displayState)
{
case 0:
SEG_4_GND_OFF;
CLEAR_DIGIT;
if(theDisplay.thousands != 0)
{
SEG_1_GND_ON;
showDigit(theDisplay.thousands);
}
break;
case 1:
SEG_1_GND_OFF;
CLEAR_DIGIT;
SEG_2_GND_ON;
showDigit(theDisplay.hundreds);
break;
case 2:
SEG_2_GND_OFF;
CLEAR_DIGIT;
SEG_3_GND_ON;
showDigit(theDisplay.tens);
break;
case 3:
SEG_3_GND_OFF;
CLEAR_DIGIT;
SEG_4_GND_ON;
showDigit(theDisplay.ones);
break;
default:
break;
}
if(displayState<3) displayState++;
else displayState = 0;
return;
}
void numbers99(){
uint8_t i = 0;
while(1)
{
//just some silly temporisation
for (uint32_t j = 0; j < 1500; j++){
showDigit(i);
}
i= (i + 1) % 100;
}
}
void voltmeter(){
//------------START ADC INIT --------------------------
ADCSRA |= (1 << ADEN) // Analog-Digital enable bit
| (1 << ADPS1) // set prescaler to 8 (clock / 8)
| (1 << ADPS0) // set prescaler to 8 (clock / 8)
// | (1 << REFS1) //1.1v internal ref
// | (1 << REFS2) | (1 << REFS1) //2.56v internal ref, without AREF
| (1 << REFS1) | (0 << REFS0) //2.56v internal ref, without AREF
;
ADCSRB |=
(1 << REFS2) //2.56v internal ref, without AREF
| (0 << GSEL) //no gain
| (0 << MUX5) //adc9 = 001001
;
ADMUX |=
// (1 << ADLAR) //just read ADH
(0 << ADLAR) //read ADL then ADH
| (1 << MUX3) | (1 << MUX0) //adc9 = 001001
;
//------------END ADC INIT --------------------------
uint16_t i = 0;
while(1)
{
// i = ReadADCx();//i in [0;255]
i = ReadADCx16();//i in [0;1024]
//adjustement : my readings are a little to high (+10%)
//also readings [0:1024]->[0:2.56v] and since voltage is measured through a divider scale, adjust
i = i * VOLTAGE_SCALE_FACTOR - VOLTAGE_SCALE_FACTOR * i /10;
//uint16_t i50 = (uint16_t)i * (uint16_t)50 / (uint16_t)255;
// uint16_t i50 = (uint16_t)i * (uint16_t)50; i50 = i50 >> 8; //same as /255
uint16_t i50 = (uint16_t)i * (uint16_t)50; i50 = i50 >> 10; //same as /1024
//just some silly temporisation
for (uint32_t j = 0; j < 1500; j++){
showDigit(i50);
}
}
}
//Main body in fact, an inifinite loop
void ReadTemp(){
set_sleep_mode(SLEEP_MODE_PWR_SAVE);
while(1)
{
uint32_t v = ReadADCx16();
//convert to centigrad and *10 (because we are working with INT and want to display 1 decimal)
//v = (v * 5 * 100 * 10) / 1024; <=> v * 5 * 1000 / 1024 <=> v *5 but we loose a bit of precision
//v = v * 5;
v = (v * 5 * 100 * 10) >> 10; //>> 10 <=> /1024
//ad'hoc calibration
//apparently my system reads a bit too high temp, about 5% too high
//I don't have the will to make extensive test, calculate formula etc...
//v = v - v/20; //finally readings are ok like that after comparison, just keep the code for memory
//average the temp with latest readings
mTempBufferAverage[mTempBufferHead] = v;
mTempBufferHead = (mTempBufferHead +1) % AVGBUFFER_LEN;
//calculate an average with a circle buffer
v= 0;
for (uint16_t j = 0; j < AVGBUFFER_LEN; j++){
v += mTempBufferAverage[j];
}
v = v / AVGBUFFER_LEN;
//just some silly temporisation
for (uint16_t j = 0; j < 10000; j++){
showDigit(v);
//_delay_us(1000);
//_delay_ms(1); // save about 0.5mA per ms of sleep. 1 does not change the brightness, after it does but saves more power... depends if you want to read the temperature by daylight too.
}
//and now the sleep n time 8 sec
for (int i =0; i < 2; i++){
wdt_reset();
myWatchdogEnable();
sleep_mode();
}
}
}
int main (void){
int cbtns = 1;
int cins = 1;
setup();
for(;;){
if(taskBtn == 0){
cbtns = digitalRead(BUTTON);
if(cbtns != lbtns){
if(cbtns == 0){
HOLD = !HOLD;
}
}
lbtns = cbtns;
taskBtn = 500;
}
if(task1 == 0){
if(HOLD){
t1s = !t1s;
digitalWrite(LED1,t1s);
}else{
digitalWrite(LED1,LOW);
}
task1 = 2500;
}
if(task2 == 0){
t2s = !t2s;
digitalWrite(LED2,t2s);
task2 = 5000;
}
if(task3 == 0){
if(!HOLD){
t3s = !t3s;
digitalWrite(LED3,t3s);
}else{
digitalWrite(LED3,LOW);
}
task3 = 1250;
}
if(!HOLD){
cins = digitalRead(SIGNAL);
if(cins != lins){
counter++;
}
}
if(displayUpdate == 0){
if(!HOLD){
if(counter <= 9999){
displaysValue[3] = counter/1000;
int h = counter%1000;
displaysValue[2] = h/100;
h = h % 100;
displaysValue[1] = h/10;
h = h % 10;
displaysValue[0] = h;
}else{
displaysValue[3] = 1;
displaysValue[2] = 10;
displaysValue[1] = 10;
displaysValue[0] = 10;
}
}
if(display == 4){
display = 0;
}
showDigit(displays[display],displaysValue[display]);
display ++;
displayUpdate = 20;
}
lins = cins;
task1--;
task2--;
task3--;
taskBtn--;
displayUpdate--;
delayMicroseconds(100);
}
return 0;
}
