| ??? 12/27/06 07:26 Read: times |
#130168 - About the 4n35 Responding to: ???'s previous message |
Asok
said:
Ext0 is connected to pin 5 of 4N35 which is the collector of the photo transistor.The base is open hence ? ...is there any base current if it is dark? The way you have connected the 4n35 indicates that the LED is bright when not in zero crossing. Thus, the collector will be pulled low when not in ZC and high when the input is swinging through the 0 point. said:
Regarding receiving a bit at a time can you give any example,I am not sure if I will miss the bus
Pseudo code starts
if state == waiting for start bit
read start bit
state = waiting for data bits
bit number = 0
if state == waiting for data bits
read data bit
dataword = 1 << bit number
bit number = bit number+1
if (bit number >= number of data bits)
state = waiting for start bit
RC5code = dataword
Flag = RC5CodeAvailable
Pseudo Code ends
I hope you understand what I am getting at. Jerson |
| Topic | Author | Date |
| Multiple Interrupts with Infrared RC5 | 01/01/70 00:00 | |
| Must be the technique you are using | 01/01/70 00:00 | |
| Test Zero Cross | 01/01/70 00:00 | |
| Couple of questions | 01/01/70 00:00 | |
| Do you disable interrputs when you are in ISR? | 01/01/70 00:00 | |
| use priority | 01/01/70 00:00 | |
| Peter,Please clarify | 01/01/70 00:00 | |
| RC5 within interrupt | 01/01/70 00:00 | |
| RC5 polling | 01/01/70 00:00 | |
| Quality workmanship... | 01/01/70 00:00 | |
| workmanship | 01/01/70 00:00 | |
| Dimmers | 01/01/70 00:00 | |
| Russel Please | 01/01/70 00:00 | |
| Some more points | 01/01/70 00:00 | |
| Dimmers | 01/01/70 00:00 | |
| that does not make sense | 01/01/70 00:00 | |
| Divide and Rule | 01/01/70 00:00 | |
instead of using your first choice, you state: | 01/01/70 00:00 | |
| C sample code | 01/01/70 00:00 | |
| Let me assimilate your code first | 01/01/70 00:00 | |
| .LST? | 01/01/70 00:00 | |
| About the 4n35 | 01/01/70 00:00 | |
| Thanks Jerson ,I corrected the picture | 01/01/70 00:00 | |
| Here | 01/01/70 00:00 | |
| F629FAN Schematic | 01/01/70 00:00 |