B4R Question dataformat of softserial

[Hans- Joachim Krahe]

Does someone know dataformat of softserial and can I change it (Startbit, stopbit) in c-source? What I need is

"start bit: 1bit; data bit: 8 bits; parity bit: none; stop bit: 1 bit. "

... it does not work in my communication-setting with esp and WT2000 chip and I dont know, if data format is the reason maybe...

thanks

 

[thetahsk]

Does someone know dataformat of softserial and can I change it (Startbit, stopbit) in c-source? What I need is

"start bit: 1bit; data bit: 8 bits; parity bit: none; stop bit: 1 bit. "

... it does not work in my communication-setting with esp and WT2000 chip and I dont know, if data format is the reason maybe...

thanks

The Software Serial Lib should work with your WT2000 according to other Arduino examples.

DFPlayer Mini Mp3 Player - DFRobot Wiki

wiki:DFRobot Mini Mp3 Player is an extremely low cost MP3 module that can be interfaced with Arduino. It supports common audio formats such as MP3, WAV and WMA.

wiki.dfrobot.com

Which esp board do you have and what pins are connected to the DFplayer ?

 

[thetahsk]

Does someone know dataformat of softserial and can I change it (Startbit, stopbit) in c-source? What I need is

"start bit: 1bit; data bit: 8 bits; parity bit: none; stop bit: 1 bit. "

... it does not work in my communication-setting with esp and WT2000 chip and I dont know, if data format is the reason maybe...

thanks

You can also check this Software Serial Lib for the esp's

GitHub - plerup/espsoftwareserial: Implementation of the Arduino software serial for ESP8266

Implementation of the Arduino software serial for ESP8266 - plerup/espsoftwareserial

github.com

 

[tigrot]

Look for some other issue, probably it's hardware problem. Some pin cannot be used for input and some for output. Look in chip's datasheet.

 

[Hans- Joachim Krahe]

Output is ok, i looked at with oszi. It is pin p1. P1 an p1.P2. Works with other connections too. But WT2000 does not react. So I dont know, if softserial uses start and stopbit as demanded...

 

[thetahsk]

Try to use 5V for the WT2000.
Which ESP do you have ?

 

[Hans- Joachim Krahe]

Yes, 5V at wt2000. It sends a blink at power on. I use D1 mini, pin d1. D1 and d1.d2. Signal is going out on oscilloscope. Never had had problems with this...

 

[Hans- Joachim Krahe]

By the way: do you know the dataformat?

 

[Hans- Joachim Krahe]

...ok, found one bug in this description:

http://en.waytronic1999.com/Private/ProductFiles/2110a7d5110d8c6173cf.pdf

- where RXD and TXD is mistaken in the picture, but correct in further discription.

but it does not jet work

... ist ist correct, to transmit serial hex 0xAA such as 'stream.write("AA"), when hex is demanded?

 

[thetahsk]

Can you post some code of your project ?
Is it similar to you other post ?

how to integrate wt2000 to DFPlayer_mini_mp3 ?

... hi there, years ago, I had a good experience with DFPlayer_mini_mp3 library (probably from Derez). Now, I would like to use wt2000 chip, it is similar, but within record. Here is the uart Code: http://n.waytronic1999.com/Private/ProductFiles/132401a2def9fdfc283e.pdf Is someone...

www.b4x.com

 

[tigrot]

...ok, found one bug in this description:

http://en.waytronic1999.com/Private/ProductFiles/2110a7d5110d8c6173cf.pdf

- where RXD and TXD is mistaken in the picture, but correct in further discription.

but it does not jet work

... ist ist correct, to transmit serial hex 0xAA such as 'stream.write("AA"), when hex is demanded?

AStream.Write(Array As Byte(0x01, 0x25, 0xF8, 0x45, 0x30, 0x05, 0x30, 0x31, 0x39, 0x37, 0x03 )) to send a string of hex