Ken Todotani / Mbed 2 deprecated DMA_M2M

Memory to Memory DMA demo from CMSIS example. This demo execute 1000 times of 32 word memory to memory DMA (copy), and also measures number of dummy loop execution during DMA cylcles. Line 56 of "DMA_M2M.c" can change DMA source. where; 1)static : source is SRAM 2)const : source is Flash ROM

Dependencies:   mbed

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GPDMA Public Functions
Functions

GPDMA Public Functions
[GPDMA]

Functions

void GPDMA_Init (void)
 Initialize GPDMA controller.
Status GPDMA_Setup (GPDMA_Channel_CFG_Type *GPDMAChannelConfig)
 Setup GPDMA channel peripheral according to the specified parameters in the GPDMAChannelConfig.
void GPDMA_ChannelCmd (uint8_t channelNum, FunctionalState NewState)
 Enable/Disable DMA channel.
IntStatus GPDMA_IntGetStatus (GPDMA_Status_Type type, uint8_t channel)
 Check if corresponding channel does have an active interrupt request or not.
void GPDMA_ClearIntPending (GPDMA_StateClear_Type type, uint8_t channel)
 Clear one or more interrupt requests on DMA channels.

Function Documentation

void GPDMA_ChannelCmd ( uint8_t  channelNum,
FunctionalState  NewState 
)

Enable/Disable DMA channel.

Parameters:
[in]channelNumGPDMA channel, should be in range from 0 to 7
[in]NewStateNew State of this command, should be:

  • ENABLE.
  • DISABLE.
Returns:
None

Definition at line 353 of file lpc17xx_gpdma.c.

void GPDMA_ClearIntPending ( GPDMA_StateClear_Type  type,
uint8_t  channel 
)

Clear one or more interrupt requests on DMA channels.

Parameters:
[in]typetype of interrupt request, should be:

  • GPDMA_STATCLR_INTTC: GPDMA Interrupt Terminal Count Request Clear
  • GPDMA_STATCLR_INTERR: GPDMA Interrupt Error Clear
[in]channelGPDMA channel, should be in range from 0 to 7
Returns:
None

Definition at line 424 of file lpc17xx_gpdma.c.

void GPDMA_Init ( void   )

Initialize GPDMA controller.

Parameters:
None
Returns:
None

Definition at line 189 of file lpc17xx_gpdma.c.

IntStatus GPDMA_IntGetStatus ( GPDMA_Status_Type  type,
uint8_t  channel 
)

Check if corresponding channel does have an active interrupt request or not.

Parameters:
[in]typetype of status, should be:

  • GPDMA_STAT_INT: GPDMA Interrupt Status
  • GPDMA_STAT_INTTC: GPDMA Interrupt Terminal Count Request Status
  • GPDMA_STAT_INTERR: GPDMA Interrupt Error Status
  • GPDMA_STAT_RAWINTTC: GPDMA Raw Interrupt Terminal Count Status
  • GPDMA_STAT_RAWINTERR: GPDMA Raw Error Interrupt Status
  • GPDMA_STAT_ENABLED_CH:GPDMA Enabled Channel Status
[in]channelGPDMA channel, should be in range from 0 to 7
Returns:
IntStatus status of DMA channel interrupt after masking Should be:
  • SET: the corresponding channel has no active interrupt request
  • RESET: the corresponding channel does have an active interrupt request

Definition at line 382 of file lpc17xx_gpdma.c.

Status GPDMA_Setup ( GPDMA_Channel_CFG_Type *  GPDMAChannelConfig )

Setup GPDMA channel peripheral according to the specified parameters in the GPDMAChannelConfig.

Parameters:
[in]GPDMAChannelConfigPointer to a GPDMA_CH_CFG_Type structure that contains the configuration information for the specified GPDMA channel peripheral.
Returns:
ERROR if selected channel is enabled before or SUCCESS if channel is configured successfully

Definition at line 218 of file lpc17xx_gpdma.c.

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