men nu är den färdig.
Kod: Markera allt
/*
Simple analyzer for Kjell:s cheap remote switch,
http://www.kjell.com/sortiment/el/el-produkter/starkstrom/fjarrstrombrytare/manuell/fjarrstrombrytare-p50219
The signal is 25 bits with a bit period of 0.6 ms
a zero is high 0.15 ms and low 0.45 ms
a one is high 0.45 ms and low 0.15 ms.
Each 25 bit packet is repeated (at least) 8 times with
about 4.4 ms delay between packets, but only first packet is
analyzed.
Type a key in a serial terminal and the key is echoed
as "#define (upper(ch))_ON" or OFF. Then the program waits for
PD7 is to go high and it is then sampled with 0.3+0.3 ms
intervalls and the final code is written in hex.
Only the 25 first bits is significant.
*/
volatile uint16_t capt_time;
volatile uint8_t capt_state, overflow_cnt;
// Called on falling and rising edge on ICP1(PB0)
// capt_state is 1 when w got a rising edge, zero on a falling
// last meassurement is stored in time
ISR(TIMER1_CAPT_vect)
{
static uint16_t save_time;
// Read and change edge
uint8_t state = (TCCR1B ^= (1<<ICES1));
if (bit_is_clear(state, ICES1)) {
// It was a rising edge, remember start time
save_time = ICR1;
capt_state = 1;
} else {
// Time elapsed since last falling edge.
capt_time = ICR1 - save_time;
capt_state = 0;
}
}
// Count number of overflows. Not used right now.
ISR(TIMER1_OVF_vect)
{
overflow_cnt++;
}
// Start an input caputre on ICP1.
// count in 25 pulses and determine if they are long or short.
uint32_t capture(void)
{
uint32_t n = 0;
uint8_t i = 0;
TIFR1 = (1<<ICF1); // Clear pending interrupts
capt_state = 0;
// Wait for first rising edge
while (capt_state == 0)
;
while (i < 25) {
// Wait for fall
while (capt_state == 1)
;
// *2 for 16MHz
if (capt_time > 300*2)
n |= 1;
n <<= 1;
while(capt_state == 0)
;
i++;
}
n <<= 6;
return n;
}
void setup()
{
Serial.begin(9600);
TIMSK1 = (1<<ICIE1)|(1<<TOIE1); // Enable input capture and overflow
// interrupt
TCCR1A = 0;
TCCR1B = (1<<ICNC1)|(1<<ICES1)|(1<<CS11); // presc 1:8
}
void loop()
{
uint32_t n;
uint8_t i;
if (Serial.available())
{
char ch = Serial.read();
Serial.print("#define ");
Serial.print((char)toupper(ch));
Serial.print("_");
if (isupper(ch))
Serial.print("ON ");
else
Serial.print("OFF");
Serial.print(" 0x");
Serial.println(capture(), HEX);
}
}Kod: Markera allt
#define A_ON 0xFFC55400
#define A_OFF 0xFFC55100
#define B_ON 0xFFD15400
#define B_OFF 0xFFD15100
#define C_ON 0xFFD45400
#define C_OFF 0xFFD45100
#define D_ON 0xFFD51400
#define D_OFF 0xFFD51100
#define E_ON 0xFFD54400
#define E_OFF 0xFFD54100
Jo. Om du menar digitalt oscilloskop så har jag ett likadant som du har (om jag minns rätt): Där kan man ju zomma in och läsa av, men det är ju enklare att få utKlas-Kenny skrev:"lite besvärligt att läsa av 25 ettor/nollor på oscilloskopet"
Dags att investera i ett DSO!
Kod: Markera allt
#define C_ON 0xFFD45400Tackar! (trycker A på datorn, springer in i sovrummen och kollar att lampan tändes, det gjorde den, hur kul som helstTrevligt projekt i alla fall
) 
