I have had audio playing using the button control method, so my files are working and playable.
I just cant figure out how to get it to accept serial control.
I have also been using the SOMO-14D resources out there to see if that helps.
WTV020-SD voice module adopts WTV020SD-20S as core procesing chip. It supports MP3 control mode, key control models (3-voice and 5-voice),pwer control mode or two-line serial control mode . Control mode is set while producing, which can not be changed through configuring.
Note: please choose the mo3 mode you want to order and we will ship for you as you order!
So, unless you got the serial mode version, it doesn't look to me like you can get it into serial mode.
On the other hand there is this:
If you want to control the mp3 player with serial port commands with arduino, first you must put the cof.mp3 file with number 1 inside the advert1 folder.
Have you created this file, in this directory? Does the file contain just the number 1?
I definitely got the serial version. I emailed them at first and asked and they said that it is (and actually sent me a second one to make sure).
As for the folder/file structure I have tried both that way and the 0001.ad4, 0002.ad4 methods.
Hardwired as MP3 mode When I trigger pin 9 , all I get is a beep. I tried several wav files, and even reconfigured those wav files to ensure they had the proper bit rate. I tried the sample ad4 files found in this forum, and then tried mp3s. I'm using a 1Gb scandisk SD card.
Simply 3.3V into VDD pin 16, an LED with 500 ohm resistor to pin 15, pin 8 wired to COM. Tie pin 9 to ground to trigger. Get nothing but a short beep. The LED does go out while it beeps. I'm using a cell phone speaker - the chip doesnt drive a 1/4 W speaker.
The chip doesnt play files at all from memory.
Wonder what I'm doing wrong ................not sure what to ask the vendor.