/**
* @brief Enables or disables the Mute mode for the selected SAI block.
*
* @note This function has a meaning only when the audio block is transmitter
* @note Mute mode is applied for an entire frame for all the valid slot
* It becomes active at the end of an audio frame when set somewhere in a frame.
* Mute mode exit occurs at the end of the frame in which the bit MUTE has been set.
*
* @param SAI_Block_x: where x can be A or B to select the SAI Block peripheral.
* @param NewState: new state of the SAIx block.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void SAI_MuteModeCmd(SAI_Block_TypeDef* SAI_Block_x, FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_SAI_BLOCK_PERIPH(SAI_Block_x));
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Enable the selected SAI block mute mode */
SAI_Block_x->CR2 |= SAI_xCR2_MUTE;
}
else
{
/* Disable the selected SAI SS output */
SAI_Block_x->CR2 &= ~(SAI_xCR2_MUTE);
}
}
/**
* @brief Enables or disables the specified SAI Block peripheral.
* @param SAI_Block_x: where x can be A or B to select the SAI Block peripheral.
* @param NewState: new state of the SAI_Block_x peripheral.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void SAI_Cmd(SAI_Block_TypeDef* SAI_Block_x, FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_SAI_BLOCK_PERIPH(SAI_Block_x));
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Enable the selected SAI peripheral */
SAI_Block_x->CR1 |= SAI_xCR1_SAIEN;
}
else
{
/* Disable the selected SAI peripheral */
SAI_Block_x->CR1 &= ~(SAI_xCR1_SAIEN);
}
}
/**
* @brief Enables or disables the specified SAI Block interrupts.
* @param SAI_Block_x: where x can be A or B to select the SAI Block peripheral.
* @param SAI_IT: specifies the SAI interrupt source to be enabled or disabled.
* This parameter can be one of the following values:
* @arg SAI_IT_FREQ: FIFO Request interrupt mask
* @arg SAI_IT_MUTEDET: MUTE detection interrupt mask
* @arg SAI_IT_OVRUDR: overrun/underrun interrupt mask
* @arg SAI_IT_AFSDET: anticipated frame synchronization detection
* interrupt mask
* @arg SAI_IT_LFSDET: late frame synchronization detection interrupt
* mask
* @arg SAI_IT_CNRDY: codec not ready interrupt mask
* @arg SAI_IT_WCKCFG: wrong clock configuration interrupt mask
* @param NewState: new state of the specified SAI interrupt.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void SAI_ITConfig(SAI_Block_TypeDef* SAI_Block_x, uint32_t SAI_IT, FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_SAI_BLOCK_PERIPH(SAI_Block_x));
assert_param(IS_FUNCTIONAL_STATE(NewState));
assert_param(IS_SAI_BLOCK_CONFIG_IT(SAI_IT));
if (NewState != DISABLE)
{
/* Enable the selected SAI Block interrupt */
SAI_Block_x->IMR |= SAI_IT;
}
else
{
/* Disable the selected SAI Block interrupt */
SAI_Block_x->IMR &= ~(SAI_IT);
}
}
/**
* @brief Returns the status of EN bit for the specified SAI Block x.
* @param SAI_Block_x: where x can be A or B to select the SAI Block peripheral.
*
* @note After disabling a SAI Block, it is recommended to check (or wait until)
* the SAI Block is effectively disabled. If a Block is disabled while
* an audio frame transfer is ongoing, the current frame will be
* transferred and the block will be effectively disabled only at
* the end of audio frame.
*
* @retval Current state of the DMAy Streamx (ENABLE or DISABLE).
*/
FunctionalState SAI_GetCmdStatus(SAI_Block_TypeDef* SAI_Block_x)
{
FunctionalState state = DISABLE;
/* Check the parameters */
assert_param(IS_SAI_BLOCK_PERIPH(SAI_Block_x));
if ((SAI_Block_x->CR1 & (uint32_t)SAI_xCR1_SAIEN) != 0)
{
/* The selected SAI Block x EN bit is set (audio frame transfer is ongoing) */
state = ENABLE;
}
else
{
/* The selected SAI Block x EN bit is cleared (SAI Block is disabled and
all transfers are complete) */
state = DISABLE;
}
return state;
}
/**
* @brief Checks whether the specified SAI block x flag is set or not.
* @param SAI_Block_x: where x can be A or B to select the SAI Block peripheral.
* @param SAI_FLAG: specifies the SAI block flag to check.
* This parameter can be one of the following values:
* @arg SAI_FLAG_FREQ: FIFO Request flag.
* @arg SAI_FLAG_MUTEDET: MUTE detection flag.
* @arg SAI_FLAG_OVRUDR: overrun/underrun flag.
* @arg SAI_FLAG_WCKCFG: wrong clock configuration flag.
* @arg SAI_FLAG_CNRDY: codec not ready flag.
* @arg SAI_FLAG_AFSDET: anticipated frame synchronization detection flag.
* @arg SAI_FLAG_LFSDET: late frame synchronization detection flag.
* @retval The new state of SAI_FLAG (SET or RESET).
*/
FlagStatus SAI_GetFlagStatus(SAI_Block_TypeDef* SAI_Block_x, uint32_t SAI_FLAG)
{
FlagStatus bitstatus = RESET;
/* Check the parameters */
assert_param(IS_SAI_BLOCK_PERIPH(SAI_Block_x));
assert_param(IS_SAI_BLOCK_GET_FLAG(SAI_FLAG));
/* Check the status of the specified SAI flag */
if ((SAI_Block_x->SR & SAI_FLAG) != (uint32_t)RESET)
{
/* SAI_FLAG is set */
bitstatus = SET;
}
else
{
/* SAI_FLAG is reset */
bitstatus = RESET;
}
/* Return the SAI_FLAG status */
return bitstatus;
}