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dma_if.h File Reference
Functions

dma_if.h File Reference

DMA Driver interface headers. More...

Go to the source code of this file.

Functions

int_t R_DMA_Init (const dma_drv_init_t *const p_dma_init_param, int32_t *const p_errno)
 Function Name: R_DMA_Init Init DMA driver.
int_t R_DMA_UnInit (int32_t *const p_errno)
 Function Name: R_DMA_UnInit UnInit DMA driver.
int_t R_DMA_Alloc (const int_t channel, int32_t *const p_errno)
 Function Name: R_DMA_Alloc Open DMA channel.
int_t R_DMA_Free (const int_t channel, int32_t *const p_errno)
 Function Name: R_DMA_Free Close DMA channel.
int_t R_DMA_Setup (const int_t channel, const dma_ch_setup_t *const p_ch_setup, int32_t *const p_errno)
 Function Name: R_DMA_Setup Setup DMA transfer parameter.
int_t R_DMA_Start (const int_t channel, const dma_trans_data_t *const p_dma_data, int32_t *const p_errno)
 Function Name: R_DMA_Start Start DMA transfer.
int_t R_DMA_NextData (const int_t channel, const dma_trans_data_t *const p_dma_data, int32_t *const p_errno)
 Function Name: R_DMA_NextData Set continous DMA mode.
int_t R_DMA_Cancel (const int_t channel, uint32_t *const p_remain, int32_t *const p_errno)
 Function Name: R_DMA_Cancel Cancel DMA transfer.
uint16_t R_DMA_GetVersion (void)
 Function Name: R_DMA_GetVersion.

Detailed Description

DMA Driver interface headers.

Rev:
1318
Date:
2014-12-04 10:45:12 +0900#

Definition in file dma_if.h.

Function Documentation

int_t R_DMA_Alloc ( const int_t  channel,
int32_t *const   p_errno 
)

Function Name: R_DMA_Alloc Open DMA channel.

Check parameter in this function mainly.

Description:

Parameters:
[in]channel:Open channel number. If channel is (-1), it looking for free chanel and allocate.
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - EINVAL : Value of the ch is outside the range of DMA_ALLOC_CH(-1) <= ch < DMA_CH_NUM. EACCES : Driver status isn't DMA_DRV_INIT. EBUSY : It has been allocated already in channel. EMFILE : When looking for a free channel, but a free channel didn't exist. ENOTSUP : Channel status is DMA_CH_UNINIT. EFAULT: Channel status is besides the status definded in dma_stat_ch_t.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 264 of file dma_if.c.

int_t R_DMA_Cancel ( const int_t  channel,
uint32_t *const   p_remain,
int32_t *const   p_errno 
)

Function Name: R_DMA_Cancel Cancel DMA transfer.

Check parameter in this function mainly.

Description:

Parameters:
[in]channel:Cancel DMA channel number.
[in]p_remain:Remain data size of DMA transfer when it stopping.
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - EBADF : Channel status is DMA_CH_INIT or DMA_CH_OPEN. (DMA stopped) EINVAL : Value of the ch is outside the range of (-1) < ch < (DMA_CH_NUM + 1). ENOTSUP : Channel status is DMA_CH_UNINIT. EFAULT: Channel status is besides the status definded in dma_stat_ch_t. p_remain is NULL.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 1070 of file dma_if.c.

int_t R_DMA_Free ( const int_t  channel,
int32_t *const   p_errno 
)

Function Name: R_DMA_Free Close DMA channel.

Check parameter in this function mainly.

Description:

Parameters:
[in]channel:Close channel number.
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - EBADF : Channel status is DMA_CH_INIT. EINVAL : Value of the ch is outside the range of (-1) < ch < (DMA_CH_NUM + 1). EACCES : Driver status isn't DMA_DRV_INIT. EBUSY : It has been start DMA transfer in channel. ENOTSUP : Channel status is DMA_CH_UNINIT. EFAULT: Channel status is besides the status definded in dma_stat_ch_t.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 369 of file dma_if.c.

uint16_t R_DMA_GetVersion ( void   )

Function Name: R_DMA_GetVersion.

Get DMA driver version.

Description:

Parameters:
none
Return values:
driverversion - upper 8bit=MAJOR lower 8bit=MINOR

Definition at line 62 of file dma_ver.c.

int_t R_DMA_Init ( const dma_drv_init_t *const   p_dma_init_param,
int32_t *const   p_errno 
)

Function Name: R_DMA_Init Init DMA driver.

Check parameter in this function.

Description:

Parameters:
[in]p_dma_init_param:Point of driver init parameter.
[in,out]p_errno:Pointer of error code. When pointer is NULL, it isn't set error code. error code - OS error num : Registering handler failed. EPERM : Pointer of callback function which called in DMA error interrupt handler is NULL. EFAULT : dma_init_param is NULL.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 68 of file dma_if.c.

int_t R_DMA_NextData ( const int_t  channel,
const dma_trans_data_t *const   p_dma_data,
int32_t *const   p_errno 
)

Function Name: R_DMA_NextData Set continous DMA mode.

Check parameter in this function mainly.

Description:

Parameters:
[in]channel:Continuous DMA channel number.
[in,out]p_dma_data:DMAaddress parameters.
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - EBADF : Channel status is DMA_CH_INIT. EINVAL : Value of the ch is outside the range of (-1) < ch < (DMA_CH_NUM + 1). EBUSY : It has been set continous DMA transfer. ENOTSUP : Channel status is DMA_CH_UNINIT. EPERM : The value in p_ch_setup isn't in the right range. EFAULT: Channel status is besides the status definded in dma_stat_ch_t. p_dma_data is NULL.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 945 of file dma_if.c.

int_t R_DMA_Setup ( const int_t  channel,
const dma_ch_setup_t *const   p_ch_setup,
int32_t *const   p_errno 
)

Function Name: R_DMA_Setup Setup DMA transfer parameter.

Check parameter in this function mainly.

Description:

Parameters:
[in]channel:Setup channel number.
[in]p_ch_setup:Setup parameters.
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - EBADF : Channel status is DMA_CH_INIT. EINVAL : Value of the ch is outside the range of (-1) < ch < (DMA_CH_NUM + 1). EBUSY : It has been start DMA transfer in channel. ENOTSUP : Channel status is DMA_CH_UNINIT. EPERM : The value in p_ch_setup isn't in the right range. EFAULT: Channel status is besides the status definded in dma_stat_ch_t. p_ch_setup is NULL.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 485 of file dma_if.c.

int_t R_DMA_Start ( const int_t  channel,
const dma_trans_data_t *const   p_dma_data,
int32_t *const   p_errno 
)

Function Name: R_DMA_Start Start DMA transfer.

Check parameter in this function mainly.

Description:

Parameters:
[in]channel:DMA start channel number.
[in]p_dma_data:DMAaddress parameters.
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - EBADF : Channel status is DMA_CH_INIT. EINVAL : Value of the ch is outside the range of (-1) < ch < (DMA_CH_NUM + 1). EBUSY : It has been start DMA transfer in channel. ENOTSUP : Channel status is DMA_CH_UNINIT. EPERM : The value in p_ch_setup isn't in the right range. EFAULT: Channel status is besides the status definded in dma_stat_ch_t. p_dma_data is NULL.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 819 of file dma_if.c.

int_t R_DMA_UnInit ( int32_t *const   p_errno )

Function Name: R_DMA_UnInit UnInit DMA driver.

Check parameter in this function.

Description:

Parameters:
[in,out]p_errno:Pointer of error code When pointer is NULL, it isn't set error code. error code - OS error num : Unegistering handler failed. EACCES : Driver status isn't DMA_DRV_INIT. EBUSY : It has been allocated already in channel. EFAULT : Channel status is besides the status definded in dma_stat_ch_t.
Return values:
ESUCCESS- Operation successful. EERROR - Error occured.

Definition at line 147 of file dma_if.c.

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