This function is called by a device driver to
release the SPI lock and give the access to the SPI bus to other device’s hardware.
Files
net_bsp.c
Prototype
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Code Block |
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static CPU_INT32U NetDev_WiFi_SPI_Unlock (NET_IF *p_if); |
Note that since NetDev_WiFi_SPI_Unlock()
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 unlock.
Returned Value
None.
Required Configuration
None.
Notes / Warnings
- 1
NetDev_WiFi_SPI_Unlock must be
implemented if more than one hardware device share the same SPI bus. - 2 Since each network device requires a unique
NetDev_WiFi_SPI_Unlock()
, it is recommended that each device’sNetDev_WiFi_SPI_Unlock()
function be named using the following convention:NetDev_WiFi_[Device]SPI_Unlock[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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