Problems with AT89C5132 USB/Serial Communication!

[john2020]

Hello All,
I am having problems with Atmel FLIP, it refuses to talk to the microcontroller. I tried using USB with hardware reset condition (ISP connected to GND via 2.2K resistor and RST = Vcc to reset). D+ and D- of the chip connects to the USB cable to the computer. I've installed the USB driver many times. I usually get the error

"Cannot open Port" or
"USB driver NOt installed" <\b>
even though I just installed the driver.

I have tried this on different computers and still I couldnt get it to work yet. Is there a way of running the bootloader software other than this? And how do I know that the bootloader software is in the memory of the chip?

Thanks
john

 

[Kukaz]

Xm, disconnect RESET pin from VCC !

 

[john2020]

hi kukaz

i will check it.i will try disconnecting reset pin from VCC,but are you sure this will rectify my problem?

thanks
john

 

[Kukaz]

High level on RESET pin (VCC) set and HOLD controller to initial (reset) state.
Bootloader do not work !

 

[john2020]

hi kukaz


You said, High level on RESET pin (VCC) set and HOLD controller to initial (reset) state. but why should i do this?could you justify out?do you mean to say this would affect the bootloader?am not getting what you are trying to say,reply me

regards
john

 

[Kukaz]

See AT89C5132 datasheet, page 18 (figure 12), 43 & 44

Best regards !