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This function is called by a device driver to configure the SPI controller accordingly with device’s SPI setting.

Files

net_bsp.c

Prototype

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          static CPU_INT32U NetDev_WiFi_SPI_Cfg (NET_IF                         *p_if,
                                                 NET_DEV_CFG_SPI_CLK_FREQ        freq,
                                                 NET_DEV_CFG_SPI_CLK_POL         pol,
                                                 NET_DEV_CFG_SPI_CLK_PHASE       phase,
                                                 NET_DEV_CFG_SPI_XFER_UNIT_LEN   xfer_unit_len,
                                                 NET_DEV_CFG_SPI_XFER_SHIFT_DIR  xfer_shift_dir,
                                                 NET_ERR                        *p_err);

Note that since NetDev_WiFi_SPI_Cfg() 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’.

Arguments

p_if

Pointer to specific interface to configure the SPI controller.

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This 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.

Returned Value

None.

Required Configuration

None.

Notes / Warnings

• 1 NetDev_WiFi_SPI_Cfg() should be called only after the SPI lock has been acquired by calling NetDev_WiFi_SPI_Lock().
• 2 If no other device’s hardware share the same SPI controller, the configuration can be applied only at the initialization when NetDev_WiFi_SPI_Init() is called.
• 3 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:

  NetDev_WiFi_[Device]SPI_ChipSelEn[Number]()
[Device]

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

[Number]

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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