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MICROCHIPC bootloader - Can't download code into PIC16LF871

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vamaro

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Hi all,

Since I can't understand what I am doing wrong I just want to check if anybody has any suggestions.

I have a PIC16LF871 with "01619 - bootldr-v26-16F870-71-16Mhz-19200bps.hex" programmed inside with the following configuration:
Oscillator:HS / Code Protect off / Fuses: WDT 0,PWRT 0,BODEN 0,LVP 0,CPD 1,WRT 1,DEBUGGER 1

In my board I am using a 16MHz crystal, MCLR is connected to VDD by 1K2 res and RB3 is connected to ground by another 1K2 res.
I am able to see the PIC oscillating signal with a scope.

In order to load the test code "_19160 - Test_16F87x_Serial_Port_19200baud_16Mhz.hex" I use the "PIC downloader 1.08" software.
It presents the message "searching for bootloader" and I can see some signals (don't know if the correct ones) in the RC7/RX pin, just after an ICL232 -RS232toTTL- converter.

Shouldn't something happen after I reset the PIC?
Do you see anything wrong in the PIC configuration?
Do you see anything wrong in my short schematic description?
Any ideas would be appreciated...

Thank you,
VSC
 
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