User`s manual

RX62N Group, RX621 Group 4. Library Reference
4.2.10. External DMA Controller
1) R_EXDMAC_Create
Synopsis
Configure the EXDMA controller.
Prototype
bool R_EXDMAC_Create(
uint8_t data1,
// Channel selection
uint32_t data2,
// Configuration selection
uint16_t data3,
// Configuration selection
uint8_t data4,
// Configuration selection
void * data5,
// Source start address
void * data6,
// Destination start address
uint16_t data7,
// Transfer count
uint16_t data8,
// Repeat or Block size
int32_t data9,
// Address offset
uint32_t data10,
// Source address extended repeat area
uint32_t data11,
// Destination address extended repeat area
void * func,
// Callback function
uint8_t data12
// Interrupt priority level
);
Description (1/3)
Set up an EXDMAC channel.
[data1]
The channel number n (where n = 0 to 1).
[data2]
Configure the operation of channel EXDMACn.
Use "|" to separate each selection.
•
Transfer mode selection
PDL_EXDMAC_NORMAL or
PDL_EXDMAC_REPEAT or
PDL_EXDMAC_BLOCK or
PDL_EXDMAC_CLUSTER
Normal or
Repeat or
Block or
Cluster mode.
PDL_EXDMAC_SOURCE or
PDL_EXDMAC_DESTINATION
If Repeat, Block or Cluster mode is selected, the source or
destination side can be selected as the Repeat or Block
area. This selection is optional.
•
Address direction selection
PDL_EXDMAC_SOURCE_ADDRESS_FIXED or
PDL_EXDMAC_SOURCE_ADDRESS_PLUS or
PDL_EXDMAC_SOURCE_ADDRESS_MINUS or
PDL_EXDMAC_SOURCE_ADDRESS_OFFSET
Leave the source address unchanged,
increment it, decrement it or modify it by
the value specified in parameter data9.
Address offset is valid only for n = 0.
PDL_EXDMAC_DESTINATION_ADDRESS_FIXED or
PDL_EXDMAC_DESTINATION_ADDRESS_PLUS or
PDL_EXDMAC_DESTINATION_ADDRESS_MINUS or
PDL_EXDMAC_DESTINATION_ADDRESS_OFFSET
Leave the destination address
unchanged, increment it,
decrement it or modify it by the
value specified in parameter data9.
Address offset is valid only for n = 0.
•
Address mode selection
PDL_EXDMAC_ADDRESS_MODE_READ or
PDL_EXDMAC_ADDRESS_MODE_WRITE or
PDL_EXDMAC_ADDRESS_MODE_DUAL
Select single address mode with the source
or destination for address output,
or dual address mode.
•
Transfer data size
PDL_EXDMAC_SIZE_8 or
PDL_EXDMAC_SIZE_16 or
PDL_EXDMAC_SIZE_32
Select 8, 16 or 32 bits for the data to be transferred.
R20UT0084EE0112 Rev.1.12 Page 4-73
July. 16, 2014