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SPI Flash Read/Write Issue

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deep.kap

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I'm trying to write into SPI Flash IC using Quectel MC60 openCPU.

I'm writing some data to a particular address and then I'm trying to read from the same, But I'm always getting all the bytes 0xFF.

-> Yes. I have Erased that particular sector before.

-> I'm successfully getting correct ID from SPI Flash IC. (SPI is working)

-> I have also tried to Write Enable Instruction(06h). I'm always getting 0x00 byte from status register, even after Write Enable Instruction.

SPI Flash: W25Q64FVSSIQ

MCU : Quectel MC60

I have attached code below.

Please help me where the issue. Thanks!!
 

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  • SPI_Flash_Code.txt
    4.9 KB · Views: 83

Yes. WP pin is pulled up.
 

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