Block Functions

General Description

Functions
__STATIC_INLINE void	Cy_AXIDMAC_Enable (AXI_DMAC_Type *base)
	Enables the AXIDMAC block. More...
__STATIC_INLINE void	Cy_AXIDMAC_Disable (AXI_DMAC_Type *base)
	Disables the AXIDMAC block. More...
__STATIC_INLINE uint32_t	Cy_AXIDMAC_GetAllChannelStatus (AXI_DMAC_Type *base)
	Returns the channel enabled status of all channels in a AXIDMAC block. More...
__STATIC_INLINE uint32_t	Cy_AXIDMAC_GetActiveChannel (AXI_DMAC_Type const *base)
	Returns the status of the active/pending channels of the AXIDMAC block. More...

Function Documentation

Cy_AXIDMAC_Enable()

__STATIC_INLINE void Cy_AXIDMAC_Enable

(

AXI_DMAC_Type *

base

)

Enables the AXIDMAC block.

Parameters

base	The pointer to the hardware AXIDMAC block.

Function Usage

  #define AXIDMAC_DESCRIPTOR CY_SECTION(".cy_socmem_data") cy_stc_axidmac_descriptor_t
  /* Scenario: Initialize a 2D descriptor with descriptors, src and dst are in SOCMEM*/
  #define DATACNT (8UL)
  CY_SECTION(".cy_socmem_data") cy_stc_axidmac_descriptor_t firstDescriptor;
  CY_SECTION(".cy_socmem_data") cy_stc_axidmac_descriptor_t nextDescriptor;
  CY_SECTION(".cy_socmem_data") uint32_t src[DATACNT];
  CY_SECTION(".cy_socmem_data") uint32_t dst[DATACNT];
  CY_SECTION(".cy_socmem_data") cy_stc_axidmac_descriptor_config_t descriptor_cfg =
  {
        .retrigger = CY_AXIDMAC_RETRIG_IM,
        .interruptType = CY_AXIDMAC_DESCR,
        .triggerOutType = CY_AXIDMAC_DESCR,
        .channelState = CY_AXIDMAC_CHANNEL_ENABLED,
        .triggerInType = CY_AXIDMAC_DESCR,
        .descriptorType = CY_AXIDMAC_2D_MEMORY_COPY,
        .srcAddress = &src,
        .dstAddress = &dst,
        .mCount=1U,
        .srcXincrement = 1U,
        .dstXincrement = 1U,
        .xCount = DATACNT,
        .srcYincrement = 0U,
        .dstYincrement = 0U,
        .yCount = 1UL,
        .nextDescriptor = &nextDescriptor,
  };
 
void snippet_Cy_AXIDMAC_Enable(void)
{
  /* Scenario: Setup and enable the AXIDMAC channel 0 */
    cy_stc_axidmac_channel_config_t channelConfig;
    channelConfig.enable = false;
    channelConfig.bufferable = false;
    channelConfig.descriptor = &firstDescriptor;
    if (CY_AXIDMAC_SUCCESS != Cy_AXIDMAC_Descriptor_Init(&firstDescriptor, &descriptor_cfg))
    {
        /* Insert error handling */
    }
 
    if (CY_AXIDMAC_SUCCESS != Cy_AXIDMAC_Channel_Init(SAXI_DMAC, 0UL, &channelConfig))
    {
        /* Insert error handling */
    }
 
    Cy_AXIDMAC_Channel_SetDescriptor(SAXI_DMAC, 0UL, &firstDescriptor);
    Cy_AXIDMAC_Channel_SetPriority(SAXI_DMAC, 0UL, 3UL);
    Cy_AXIDMAC_Channel_Enable(SAXI_DMAC, 0UL);
    Cy_AXIDMAC_Enable(SAXI_DMAC);
 
}

Cy_AXIDMAC_Disable()

__STATIC_INLINE void Cy_AXIDMAC_Disable

(

AXI_DMAC_Type *

base

)

Disables the AXIDMAC block.

Parameters

base	The pointer to the hardware AXIDMAC block.

Function Usage

 
    /* Scenario: Disable the AXIDMAC channel 0 if it's priority equals 3 */
 
    if (3UL == Cy_AXIDMAC_Channel_GetPriority(SAXI_DMAC, 0UL))
    {
        if (0UL != Cy_AXIDMAC_Channel_GetStatus(SAXI_DMAC, 0UL))
        {
            Cy_AXIDMAC_Channel_Disable(SAXI_DMAC, 0UL);
            Cy_AXIDMAC_Channel_DeInit(SAXI_DMAC, 0UL);
 
            /* if needed (if there is only channel used) the whole block can be disabled */
            Cy_AXIDMAC_Disable(SAXI_DMAC);
        }
    }
 

Cy_AXIDMAC_GetAllChannelStatus()

__STATIC_INLINE uint32_t Cy_AXIDMAC_GetAllChannelStatus

(

AXI_DMAC_Type *

base

)

Returns the channel enabled status of all channels in a AXIDMAC block.

Example if return value is 7 then channel 0,1,2 are enabled.

Parameters

base	The pointer to the hardware AXIDMAC block.

Returns

Returns a bit-field with all of the currently enabled channels in the AXIDMAC block.

Function Usage

    /* Scenario: Get all channel status */
 
    Cy_AXIDMAC_GetAllChannelStatus (SAXI_DMAC);
 

Cy_AXIDMAC_GetActiveChannel()

__STATIC_INLINE uint32_t Cy_AXIDMAC_GetActiveChannel

(

AXI_DMAC_Type const *

base

)

Returns the status of the active/pending channels of the AXIDMAC block.

Parameters

base	The pointer to the hardware AXIDMAC block.

Returns

Returns a bit-field with all of the currently active/pending secure channels in the AXIDMAC block.

Function Usage

 
    /* Scenario: Get the Active channel and disable channel 0 */
    Cy_AXIDMAC_Channel_Enable(SAXI_DMAC, 0UL);
 
    if (0UL != Cy_AXIDMAC_GetActiveChannel(SAXI_DMAC))
    {
        Cy_AXIDMAC_Channel_Disable(SAXI_DMAC, 0UL);
        Cy_AXIDMAC_Channel_DeInit(SAXI_DMAC, 0UL);
 
        /* if needed (if there is only channel used) the whole block can be disabled */
        Cy_AXIDMAC_Disable(SAXI_DMAC);
    }