| ??? 12/25/05 19:25 Read: times |
#105932 - Only TX? There are 3 more to test. Responding to: ???'s previous message |
Vinod Kumar said:
but the thing is when i am able to use the circuit as a simple RS232 convertor for the TX and RX lines what could be worng with the hardware. I was able to recieve and transmitt upto 57600 bps. I looped the RX in to the TX out and was able to use the circuit without any problem. Standard UART communication is not used for ISP. The application bit-bangs the ISP signals. RX is not used during ISP. TX is used for SCK, so out of the four ISP signals you have only tested one? What about testing MOSI, MISO, and RST? Vinod Kumar said:
is the programmer capable of working with the s51/52? I have received no user reports of modifications required to accommodate the 'S51 or 'S52 devices. |
| Topic | Author | Date |
| serial port ISP programmer | 01/01/70 00:00 | |
| Links | 01/01/70 00:00 | |
| ponyprog | 01/01/70 00:00 | |
| no luck yet | 01/01/70 00:00 | |
| it will be cheaper to bou an USB paralle | 01/01/70 00:00 | |
| USB Parallel Ports | 01/01/70 00:00 | |
| solutions | 01/01/70 00:00 | |
| Doesn't work | 01/01/70 00:00 | |
| it works only for the AT89S8252 | 01/01/70 00:00 | |
| Are you certain it's a software problem? | 01/01/70 00:00 | |
| i have tested the hardware | 01/01/70 00:00 | |
| Test the hardware with the application | 01/01/70 00:00 | |
| I did test it | 01/01/70 00:00 | |
| Only TX? There are 3 more to test. | 01/01/70 00:00 | |
Another note | 01/01/70 00:00 |