Flexbus secondary wait states functionality and configuration

yorknh — Mon, 24 Jul 2017 15:39:59 GMT

First, do secondary wait states only apply to burst operations, or can they be treated as an extension of the primary wait states for single byte accesses?

Regardless, there doesn't appear to be a way to set the secondary wait state value. The _flexbus_config structure has a boolean for enabling the secondary wait states, but the is no field for the number of wait states. Not surprisingly, there is no code in FLEXBUS_Init() to set the appropriate bits in the CSCR register.

This is using MCUXpresso 10.0.2 and an SDK 2.2.0 built for the TWR-K64F120M.

Re: Flexbus secondary wait states functionality and configuration

Hui_Ma — Wed, 26 Jul 2017 04:58:55 GMT

Hi,

The secondary wait states only applied for burst operation.

In fact, the MCUXpresso SDK V2.2.0 software Flexbus driver doesn't provide full features of the Flexbus module.

Customer can add related secondary wait states setting function in application code.

Sorry for that may bring any inconvenience to you.

Have a great day,
Ma Hui

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topic Flexbus secondary wait states functionality and configuration in Kinetis Microcontrollers

Flexbus secondary wait states functionality and configuration

Re: Flexbus secondary wait states functionality and configuration