Nor flash with SPI

Depend on SDK1.10.0

Overview

• The example shows the use of SPI interface with single/dual/quad mode to read and write nor flash memory.
• The nor flash memory used in this example is W25Q64JVSSIQ
• The component serial_nor supports nor flash memory that complies with sfdp, and is not limited to W25Q64JVSSIQ
• The default SPI SCLK frequency is 50M
• The default SPI IO mode is dual-wire SPI

Board Setting

• SPI PINs should check the information according to the board model, default is the same as pins in hpm_sdk spi demo.
• The SPI pins connect the nor flash(module) pins
• please refer to taobao link module: https://item.taobao.com/item.htm?spm=a1z10.3-c-s.w4002-24145583300.20.7e233746j65hgo&id=43071752309
• When using four wires, you need to ensure that the board has IO2 and IO3 pins leading to SPI and initialize the relevant pins.

Running the example

• confirm the hardware is correct,and the sample runs successfully,
• Use quad SPI, the log would be seen on the terminal like:

  spi nor flash init ok
  the flash sfdp version:5
  the flash size:8192 KB
  the flash page_size:256 Byte
  the flash sector_size:4 KB
  the flash block_size:64 KB
  the flash sector_erase_cmd:0x20
  the flash block_erase_cmd:0xd8
  wbuff and rbuff compare finsh ok
  write_speed:667.72 KB/s read_speed:22842.98 KB/s
  page program: wbuff and rbuff compare finsh ok

• Use dual SPI, the log would be seen on the terminal like:

  spi nor flash init ok
  the flash sfdp version:0
  the flash size:8192 KB
  the flash page_size:256 Byte
  the flash sector_size:4 KB
  the flash block_size:64 KB
  the flash sector_erase_cmd:0x20
  the flash block_erase_cmd:0xd8
  wbuff and rbuff compare finsh ok
  write_speed:617.63 KB/s read_speed:11905.44 KB/s
  page program: wbuff and rbuff compare finsh ok

• Use single SPI, the log would be seen on the terminal like:

  spi nor flash init ok
  the flash sfdp version:0
  the flash size:8192 KB
  the flash page_size:256 Byte
  the flash sector_size:4 KB
  the flash block_size:64 KB
  the flash sector_erase_cmd:0x20
  the flash block_erase_cmd:0xd8
  wbuff and rbuff compare finsh ok
  write_speed:614.73 KB/s read_speed:6084.88 KB/s
  page program: wbuff and rbuff compare finsh ok

Licensing

HPM APP is permissively licensed using the BSD 3-clause license