Im building an MP3 player using a PIC18LF8720, and Im using the STA013... I cant get the STA to acknowledge any commands... and sending the identify command (0x01) results in the data read being 0xFF...
It looks as though the STA is not capable of pulling the SDA line low - Stays high due to the pull up resistor... I can see both the SCL and SDA changing states when I run my program...
Any ideas on what may be causing this? Anyone had this happen before?
- Vcc is stable on 3.3V, using a fixed linear regulator
- SDA is pulled high with 10k (also tried 1k and 5k)
- SCL is not pulled high as PIC is the only master
- Have also tried adding some capacitance to the SDA line, with no luck