flash SI has no signal

[wen]

I use spi0 to connect a flash GD25VQ16C.I send a Read Status Register Command 05,but there is no so signal.

[Jørgen Holmefjord]

How did you connect the flash? Which device are you using? Can you upload your code? Does your application return any error codes?

[wen]

I use GD25VQ16CT flash and use the spi_master_example_with_spi_slave sample.

[Jørgen Holmefjord]

Which SDK version are you using? How have you connected the flash to your nRF device? Have you modified the example to work with the flash you are using? Have you read the datasheet of GD25VQ16CT to know how to interface the flash correctly?

[Werner Johansson]

The main gotcha with those flash parts is that they need #HOLD pulled high (some devices have built-in pull-ups, some don't). If #HOLD isn't pulled high the chip will not respond at all in single-bit mode.