Hi guys,
Having a lot of fun with 4.0! My issue is:
I am attempting to port a project using the CS42448 from a Teensy 3.6 to 4.0. I have successfully rewired the PCB and now have 8 working audio outputs but I have not been able to get the inputs working.
I followed the guidance for the audio board to remap the pins to the new teensy 4.0:
TX from 22 (3.6) to 7 (4.0)
RX from 13 to 8
SDA from 18 to 18
SCL from 19 to 19
LRCLK from 23 to 20
BCLK from 9 to 21
MCLK from 11 to 23
Has anyone successfully used the CS42448 inputs on the T4.0 as of yet?
Any help with this would be greatly appreciated. I made a little PCB sub board to handle the rewiring as i have the 3.6 connected to my PCB via headers and slotting back in a 3.6 works perfectly so the hardware is sound, I think I have a mistake in the RX connection.
Should RX connect to CRX1 on the teensy 4.0? The 2 pins for CRX1 (13 and 23) are being used for SCLK & MCLK in my current wiring. I get the feeling that the issue is caused by a conflicting pin (the alternate SPI clock pin being unavailable on the T4).
The only pins in use outside of the CS42448 are for an ST7735 screen. The pins assigned are:
#define sclk 13
#define mosi 11
#define cs 10
#define dc 6
#define rst 9
If I can provide any more info just let me know and thanks for any help!
Having a lot of fun with 4.0! My issue is:
I am attempting to port a project using the CS42448 from a Teensy 3.6 to 4.0. I have successfully rewired the PCB and now have 8 working audio outputs but I have not been able to get the inputs working.
I followed the guidance for the audio board to remap the pins to the new teensy 4.0:
TX from 22 (3.6) to 7 (4.0)
RX from 13 to 8
SDA from 18 to 18
SCL from 19 to 19
LRCLK from 23 to 20
BCLK from 9 to 21
MCLK from 11 to 23
Has anyone successfully used the CS42448 inputs on the T4.0 as of yet?
Any help with this would be greatly appreciated. I made a little PCB sub board to handle the rewiring as i have the 3.6 connected to my PCB via headers and slotting back in a 3.6 works perfectly so the hardware is sound, I think I have a mistake in the RX connection.
Should RX connect to CRX1 on the teensy 4.0? The 2 pins for CRX1 (13 and 23) are being used for SCLK & MCLK in my current wiring. I get the feeling that the issue is caused by a conflicting pin (the alternate SPI clock pin being unavailable on the T4).
The only pins in use outside of the CS42448 are for an ST7735 screen. The pins assigned are:
#define sclk 13
#define mosi 11
#define cs 10
#define dc 6
#define rst 9
If I can provide any more info just let me know and thanks for any help!
Last edited: