IO2 QSPI pin

[AShetty]

While using the Quad SPI mode of the OCTOSPI peripheral for four lanes, it was observed that when used in input mode all the pins except IO2 function properly. We can see the signal coming to the pin when probed externally, but it just does not seem to get sampled. Because of this the data captured seems similar but falls short of the actual value as the data from this GPIO always seems to be zero. It does not seem to be due to a faulty board also

[KDJEM.1]

Hello @AShetty and welcome to the Community 🙂,

Could you please give more details about the issue:

• Which STM32 are you using?
• Are you use a ST board?
• Which pin is connected to IO2?

Could you please test with different pins  by reassigning the IO2 function to a different pin and see if the issue persists. Double-checking the physical connections and solder joints for the IO2 pin.

Please make sure that the pin is correctly assigned in the hardware configuration and that there are no conflicts with other peripherals.

Thank you.

Kaouthar

[AShetty]

Hello Kouathar,

I am using an STM32H563 Nucleo board. 

PE2 pin was connected to IO2. The IO2 line seems to work if connected to any other pin supporting it(eg PC2). Also, the PE2 pin in the ST Morpo header works. The issue seems to be only with the Zio header. 

[KDJEM.1 · Accepted solution]

Hello @AShetty ,

PE2 is connected to the ST Zio connector (pin25 of CN10) and is used as the QSPI_BK1_IO2 signal when the solder bridge SB70 is ON as mentioned in UM3115 Table 17. Solder bridge and jumper configuration.

For that, please make sure that the SB70 state is ON.

The default status is in bold.

Thank you.

Kaouthar