/**
* @brief Hard-resets AD1854.
*
* @details Resets the AD1854 device instance via hardware by toggling the
* GPIO pin connected to AD1854 device.
*
* @param [in] hDevice AD1854 instance to work on.
* @param [in] bEnable TRUE to enable AD1854 dataflow, FALSE to disable.
*
* @return Status
* - #ADI_AD1854_SUCCESS: Successfully updated AD1854 dataflow.
* - #ADI_AD1854_BAD_HANDLE: Supplied Device handle is invalid.
* - #ADI_AD1854_GPIO_ERROR: GPIO configuration error.
*
*/
ADI_AD1854_RESULT adi_ad1854_HwReset(
ADI_AD1854_HANDLE const hDevice,
ADI_GPIO_PORT const ePort,
uint32_t const Pin)
{
/* Pointer to AD1854 device instance to work on */
ADI_AD1854_DEV *pDevice = (ADI_AD1854_DEV *) hDevice;
/* Loop variable */
volatile uint32_t i;
/* IF (Debug information enabled) */
#if defined (ADI_DEBUG)
/* IF (AD1854 Handle is invalid) */
if (ValidateHandle (hDevice) != ADI_AD1854_SUCCESS)
{
return (ADI_AD1854_BAD_HANDLE);
}
#endif
/* IF (AD1854 dataflow enabled) */
if (pDevice->bIsEnabled)
{
/* Report failure as AD1854 is already running */
return (ADI_AD1854_ALREADY_RUNNING);
}
/* Set the GPIO direction */
if (adi_gpio_SetDirection (ePort, Pin, ADI_GPIO_DIRECTION_OUTPUT))
{
/* Failed to configure GPIO, return failure */
return (ADI_AD1854_GPIO_ERROR);
}
/* De-assert reset signal */
if (adi_gpio_Clear (ePort, Pin))
{
/* Failed to configure GPIO, return failure */
return (ADI_AD1854_GPIO_ERROR);
}
/* Provide some delay to reset the device */
for (i = 0xFFFFFu; i > 0u; i--)
{
;
}
/* Assert reset signal */
if (adi_gpio_Set (ePort, Pin))
{
/* Failed to configure GPIO, return failure */
return (ADI_AD1854_GPIO_ERROR);
}
/* Return success */
return (ADI_AD1854_SUCCESS);
}
//将片选取消SPI的复用，用于连续采样模式，同时拉低
void ad7793ContinueCSPin_Set(AD7793_CS Csx)
{
if(Csx.Spix == BF609_SPI0)
{
*pREG_PORTD_MUX &= ~SPI0_SEL1_PORTD_MUX;//Disable
/* PORTx_FER registers */
*pREG_PORTD_FER &= ~SPI0_SEL1_PORTD_FER; //Disable
/* set GPIO output */
adi_gpio_SetDirection(
ADI_GPIO_PORT_D,
ADI_GPIO_PIN_11,
ADI_GPIO_DIRECTION_OUTPUT);
/* set it down */
adi_gpio_Clear(ADI_GPIO_PORT_D,
ADI_GPIO_PIN_11);
}
else if(Csx.Spix == BF609_SPI1)
{
*pREG_PORTD_MUX &= ~SPI1_SEL3_PORTD_MUX;
/* PORTx_FER registers */
*pREG_PORTD_FER &= ~SPI1_SEL3_PORTD_FER;
/* set GPIO output */
adi_gpio_SetDirection(
ADI_GPIO_PORT_D,
ADI_GPIO_PIN_10,
ADI_GPIO_DIRECTION_OUTPUT);
/* set it down */
adi_gpio_Clear(ADI_GPIO_PORT_D,
ADI_GPIO_PIN_10);
}
}