EasyDMA can operate in Array List mode.
The Array List mode is implemented in channels where the LIST register is available.
The array list is not able to specify where the next item in the list is located. Instead, it assumes that the list is organized as a linear array where items are located one after the other in RAM.
The EasyDMA array list is implemented with the data structure ArrayList_type. This is illustrated in the following code example using a READER EasyDMA channel as an example.
#define BUFFER_SIZE 4
typedef struct ArrayList
{
uint8_t buffer[BUFFER_SIZE];
} ArrayList_type;
ArrayList_type ReaderList[3] __at__ 0x20000000;
MYPERIPHERAL->READER.MAXCNT = BUFFER_SIZE;
MYPERIPHERAL->READER.PTR = &ReaderList;
MYPERIPHERAL->READER.LIST = MYPERIPHERAL_READER_LIST_ArrayList;The data structure includes a buffer that is equal in size to the READER.MAXCNT register. EasyDMA uses the READER.MAXCNT register to determine when the buffer is full.