2014-10-23, 14:55:37
Hello,
I have the following situation:
hardware: FT232R PIC16F1938
TXD tied with RX
RXD tied with TX
RTS tied with MCLR
CTS see below
software: Win7 32, ds30Loader GUI 1.5.7, driver for FT232R v2.10.00 (I know that there
is a newer version but for this chip - FT232R - it's no difference); other software or
firmware are not relevant for this discussion.
I have tried to write some firmware into the PIC either connecting CTS pin of the FT232R
to ground or leaving it unconnected. In both situations I have been able to write
correctly my firmware into the PIC regardless the settings in the GUI:
a) Reset tab: manual or RTS checked;
b) Basic tab\Flow control: None or Xon/Xoff or Hardware or Both.
So, the recommended schematic - I mean the connection of CTS to ground - from page 21 of
the main manual, October 2012 version, and the above mentioned settings are required
only when we are using a true, not a virtual, COM port together with the MAX232 shifting
levels chip?
In that case, there is no longer needed a 5-pin connector, but a 4-pin one, to upload
the firmware into the PIC.
Am I right?
I have the following situation:
hardware: FT232R PIC16F1938
TXD tied with RX
RXD tied with TX
RTS tied with MCLR
CTS see below
software: Win7 32, ds30Loader GUI 1.5.7, driver for FT232R v2.10.00 (I know that there
is a newer version but for this chip - FT232R - it's no difference); other software or
firmware are not relevant for this discussion.
I have tried to write some firmware into the PIC either connecting CTS pin of the FT232R
to ground or leaving it unconnected. In both situations I have been able to write
correctly my firmware into the PIC regardless the settings in the GUI:
a) Reset tab: manual or RTS checked;
b) Basic tab\Flow control: None or Xon/Xoff or Hardware or Both.
So, the recommended schematic - I mean the connection of CTS to ground - from page 21 of
the main manual, October 2012 version, and the above mentioned settings are required
only when we are using a true, not a virtual, COM port together with the MAX232 shifting
levels chip?
In that case, there is no longer needed a 5-pin connector, but a 4-pin one, to upload
the firmware into the PIC.
Am I right?
Reality is a fairy-tale ruin.