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Auxiliary Clock (ACLK)

Defines a driver to facilitate interfacing with the auxiliary clock. More...

Functions

static INLINE void wiced_hal_aclk_enable (UINT32 frequency, UINT32 clkSrc, UINT32 baseFreqSel)
 Configures, enables, and starts the aclk to be active on a preconfigured GPIO pin. More...
 
static INLINE void wiced_hal_aclk_disable (UINT32 clkSrc)
 Disables the desired auxilary clock source. More...
 
UINT32 wiced_hal_aclk_pads_config (UINT32 gpio, UINT32 src)
 Configure the GPIO pin for the desired auxilary clock source. More...
 

Detailed Description

Defines a driver to facilitate interfacing with the auxiliary clock.

Use this driver to output a clock to a GPIO pin for external use. Two clock sources are avaliable: clk0 or clk1, as well as two base frequencies used to calulate the prescaler : 1 MHz or 24 MHz. Note that the desired GPIO pin must have already been configured to output for aclk. See the HW muxing section in the Kit Guide for more information.

Parameters.

The following enumerations are used to configure the driver or define
return status. They are not modifiable.

Available clock sources.

enum CLK_SRC_SEL
{
    ACLK0,
    ACLK1,
        WICED_ACLK0 = ACLK0,
        WICED_ACLK1 = ACLK1
};

Available base clock frequencies.

enum CLK_SRC_FREQ_SEL
{
    ACLK_FREQ_1_MHZ,
    ACLK_FREQ_24_MHZ
        WICED_ACLK_FREQ_24_MHZ = ACLK_FREQ_24_MHZ
};

Function Documentation

static INLINE void wiced_hal_aclk_disable ( UINT32  clkSrc)
static

Disables the desired auxilary clock source.

Parameters
clkSrc- Clock source to disable (aclk0 or aclk1).
Returns
none
static INLINE void wiced_hal_aclk_enable ( UINT32  frequency,
UINT32  clkSrc,
UINT32  baseFreqSel 
)
static

Configures, enables, and starts the aclk to be active on a preconfigured GPIO pin.

(!) Note that the desired GPIO pin must have already been configured to output for aclk. See the HW muxing section in the HW User Manual or Kit Guide for your device for more information.

Parameters
frequency- Desired frequency to output; 0 is the same as disable.
clkSrc- ACLK0 or ACLK1
baseFreqSel- ACLK_FREQ_1_MHZ or ACLK_FREQ_24_MHZ.
Returns
none
UINT32 wiced_hal_aclk_pads_config ( UINT32  gpio,
UINT32  src 
)

Configure the GPIO pin for the desired auxilary clock source.

This function is in the wiced_hal_aclk_lib.a library.

Parameters
gpioPin- GPIO pin for the output of Clock source. Only gpio pin 32, 36 are for ACLK 0 Only gpio pin 33, 37 are for ACLK 1
clkSrc- Clock source to disable (aclk0 or aclk1). 0 - aclk0 1 - aclk1
Returns
TRUE - Success FALSE - Failed