Issues with Arduino driver

[ZeeRooo]

I have been trying to stablish a communication between my pc and BC417 through my Arduino (which has a CH340) and i put some prints in the Arduino sketch but nothing is received, seems like the driver is not sending information to the Arduino because https://github.com/Frans-Willem/CsrSpiDrivers/blob/master/spilpt.arduino/CsrSpiDriver/CsrSpiDriver.ino#L32 is always empty.
First, just to make sure the driver IS working, i built the LPT fixed version and worked as expected in an old LPT compatible motherboard that i have lying around, so i decided to replace all LPT to COM, but i didn't work (again, nothing were send to the Arduino).
Last, reading the CH340 datasheet i saw that 256000bauds is not supported, so i changed to other speeds (like 115200) in both Arduino sketch and https://github.com/Frans-Willem/CsrSpiDrivers/blob/master/spilpt.arduino/CsrSpiDriver/CsrSpiDriver.ino#L32

I understand that it's an old project and also something finished for you, but can you point me out what to look? Thanks.

PS: I'm using Uno R3.

[hllhll]

Years ago, I've manage to use the BitBang version, I've changed the Baud rate of the DLL & the sketch to, .. I don't remember what .... and it still worked

Note - the Serial is not meant for interfacing the BCxxx! Rather it's the interface between the PC & Arduino

[ZeeRooo]

@hllhll What do you mean with your note? I'm not supposed to be able to use my Arduino as an ISP programmer for the BC?

[hllhll]

I'll rephrase my comment.
The Arduino acts as the middleman between the BCxxx and the PC; The arduino interacts with the chip via SPI (See setup https://github.com/Frans-Willem/CsrSpiDrivers/blob/master/spilpt.arduino/CsrSpiDriver/CsrSpiDriver.ino#L21 ) And interacts with the PC Using the arduino Serial port.

In your question you mentioned CH340 - I Thought it has to do with the BCxxx (but googling I see it's not, rather the communication with the PC, I Guess that's my mistake ^_^).

Anyway, if you change the speed on the .ino; You should also change it in the .DLL
For the regular sketch https://github.com/Frans-Willem/CsrSpiDrivers/blob/master/spilpt.arduino/basics.cpp#L131:
For bitbang: https://github.com/Frans-Willem/CsrSpiDrivers/blob/master/spilpt.arduino.bitbang/basics.cpp#L129