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About SPI opcode 0x03

Hello. 

I am yoo at korea.

We will connect OLED with QSPI and Driver IC supports SLOWREAD.

- 8bit (Opcode: 0x03) + 24bit  (Addr) + 8bit (Read value: Mandatory) + 8bit (Read value: Optional) ... + 8bit (Read value: Optional) 

According to "6.19.8 instruction set" of nRF52840_PS_v1.5.pdf, there is no opcode 0x03 (SLOWREAD).

My question is as follows.

1. Is it possible add opcode 0x03?

2. Could I use "6.19.6 Sending custom instructions" for opcode 0x03.

Thank you.

Best Regrads.

Parents Reply
  • Hey Yoo, 

    I'm afraid the QSPI peripheral only supports the specified Instruction set. The QSPI is tailored for flash devices and is not a generic QSPI peripheral. I will ask my colleagues if we have any work-around for this issue. If we could get any information on the display and it's spec we could tell you definitely whether we can support it or not. 

    BR,
    Håkon Holdhus.

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