Espressif ESP32 Technical Reference Manual page 153

7 SPI Controller (SPI)
31 30 29 28 27
0 0 0 0 0 0 0
SPI_INLINK_RESTART Set the bit to add new inlink descriptors. (R/W)
SPI_INLINK_START Set the bit to start to use inlink descriptor. (R/W)
SPI_INLINK_STOP Set the bit to stop to use inlink descriptor. (R/W)
SPI_INLINK_AUTO_RET when the bit is set, inlink descriptor jumps to the next descriptor when a
packet is invalid. (R/W)
SPI_INLINK_ADDR The address of the first inlink descriptor. (R/W)
31
0 0 0 0 0 0 0
SPI_DMA_TX_EN SPI DMA write-data status bit. (RO)
SPI_DMA_RX_EN SPI DMA read-data status bit. (RO)
Espressif Systems
Register 7.27. SPI_DMA_IN_LINK_REG (0x108)
21 20 19
0 0 0 0 0
Register 7.28. SPI_DMA_STATUS_REG (0x10C)
0 0 0 0 0 0 0 0
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0x000000
0 0 0 0 0 0 0 0
153
2 1
0 0 0 0 0 0 0 0
ESP32 TRM (Version 5.2)
0
Reset
0
0
Reset