Page Comparison

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Anchor11450291145029 NetDev_WiFi_SPI_ChipSelEn() Anchor11450301145030This function is called by a device driver to enable the SPI chip select of the wireless device. Anchor11450311145031

Files

Anchor11450321145032net_bsp.c Anchor11450331145033

Prototype

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                                                       NET_ERR *p_err);

          static CPU_INT32U NetDev_WiFi_SPI_ChipSelEn (NET_IF  *p_if,

Anchor11450411145041Note that since NetDev_WiFi_SPI_ChipSelEn() is accessed only by function pointer via a BSP interface structure, it doesn’t need to be globally available and should therefore be declared as ‘static’. Anchor11450421145042 Arguments Anchor11450431145043‘static’.

Arguments

p_if Anchor11450441145044

Pointer to specific interface to enable the chip select.

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11450451145045p_err Anchor11450461145046

Pointer to variable that will receive the return error code from this function:

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NET_DEV_ERR_NONE

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NET_DEV_ERR_FAULT

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1145048This is not an exclusive list of return errors and specific network device’s or device BSP functions may return any other specific errors as required. Anchor11450491145049

Returned Value

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None.anchor11450511145051

Required Configuration

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11450521145052None. Anchor11450531145053

Notes / Warnings

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• NetDev_WiFi_SPI_ChipSelEn() should be called only after the SPI lock has been acquired by calling NetDev_WiFi_SPI_Lock().

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• Since each network device requires a unique NetDev_WiFi_SPI_ChipSelEn(), it is recommended that each device’s NetDev_WiFi_SPI_ChipSelEn() function be named using the following convention:

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• NetDev_WiFi_[Device]SPI_ChipSelEn[Number]()


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• [Device]

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• Network device name or type, e.g. RS9110 (optional if the development board does not support multiple devices)

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1145059[Number] Anchor11450601145060

Network device number for each specific instance of device (optional if the development board does not support multiple instances of the specific device)

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For example, the NetDev_WiFi_SPI_ChipSelEn() function for the #2 RS9110 wireless device on an Atmel AT91SAM9263-EK should be named NetDev_WiFi_RS9110_SPI_ChipSelEn2(), or NetDev_WiFi_RS9110_SPI_ChipSelEn_2() with additional underscore optional.

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See also Chapter 6, “Network section Network Board Support Package” on page 121Package.