EDMA3--LINK item in PARAM

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EDMA3--LINK item in PARAM [Copy link]

The LINK address in PaRAM is a 16-bit offset address to PaRAM0. After the transfer to the PaRAM is completed, the entire current PaRAM table (including the LINK address in the target PaRAM) will be overwritten with the contents of the linked target PaRAM. If a PaRAM is linked to 0xffff (empty table), then an empty transfer table with A, B, and C counters all at 0 will be returned. If you want the value in the current PaRAM to remain the same, you can LINK to a "LINK address configured as your own backup PaRAM table" so that the contents of the new table are repeatedly loaded after the transfer is completed. In this way, the operation can be repeated the next time an event is triggered. The following figure shows the link from PaRAM table 3 to PaRAM table 511. After executing two transfers, table 3 becomes an empty table, and the content in PaRAM table 511 remains unchanged. The following figure shows the link from PaRAM table 3 to PaRAM table 511. The LINK in PaRAM table 511 points to its own address 0x7FE0, and can be loaded and executed repeatedly. (If the operations in table 3 and table 511 are the same, you can directly point to table 3 in table 3 to reload itself.)