dma
Differences
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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| dma [2025/04/16 12:38] – arisotura | dma [2025/04/20 19:10] (current) – arisotura | ||
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| Line 79: | Line 79: | ||
| | 1-3 | Peripheral select | | | 1-3 | Peripheral select | | ||
| - | The peripheral select determines which peripheral is accessed. | + | The peripheral select determines which peripheral is accessed. |
| ^ Value ^ Desc. ^ | ^ Value ^ Desc. ^ | ||
| | 0 | ?? | | | 0 | ?? | | ||
| + | | 1 | ?? | | ||
| | 2 | SPI | | | 2 | SPI | | ||
| | 3 | ?? | | | 3 | ?? | | ||
| - | | 4 | + | | 4 |
| - | | 6 | + | | 5 | UART1 | |
| + | | 6 | ||
| + | | 7 | ?? | | ||
| + | |||
| + | Values 0, 2, 3, 4, 6 occur in the stock firmware. | ||
| Note that the peripheral must be configured correctly for the DMA transfer to work, ie. for SPI, the transfer direction in 0xF0004404 must match that of the DMA channel, and so on. | Note that the peripheral must be configured correctly for the DMA transfer to work, ie. for SPI, the transfer direction in 0xF0004404 must match that of the DMA channel, and so on. | ||
dma.1744807102.txt.gz · Last modified: 2025/04/16 12:38 by arisotura