Matt Lloyd
Example of UART-DMA transfers taken form the npx cmsis driver libary
GPDMA_Channel_CFG_Type Struct Reference
[GPDMA Public Types]
GPDMA Channel configuration structure type definition. More...
#include <lpc17xx_gpdma.h>
Data Fields | |
| uint32_t | ChannelNum |
| DMA channel number, should be in range from 0 to 7. | |
| uint32_t | TransferSize |
| Length/Size of transfer. | |
| uint32_t | TransferWidth |
| Transfer width - used for TransferType is GPDMA_TRANSFERTYPE_M2M only. | |
| uint32_t | SrcMemAddr |
| Physical Source Address, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_M2M or GPDMA_TRANSFERTYPE_M2P. | |
| uint32_t | DstMemAddr |
| Physical Destination Address, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_M2M or GPDMA_TRANSFERTYPE_P2M. | |
| uint32_t | TransferType |
Transfer Type, should be one of the following:
| |
| uint32_t | SrcConn |
Peripheral Source Connection type, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_P2M or GPDMA_TRANSFERTYPE_P2P, should be one of following:
| |
| uint32_t | DstConn |
Peripheral Destination Connection type, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_M2P or GPDMA_TRANSFERTYPE_P2P, should be one of following:
| |
| uint32_t | DMALLI |
| Linker List Item structure data address if there's no Linker List, set as '0'. | |
Detailed Description
GPDMA Channel configuration structure type definition.
Definition at line 311 of file lpc17xx_gpdma.h.
Field Documentation
| uint32_t ChannelNum |
DMA channel number, should be in range from 0 to 7.
Note: DMA channel 0 has the highest priority and DMA channel 7 the lowest priority.
Definition at line 312 of file lpc17xx_gpdma.h.
| uint32_t DMALLI |
Linker List Item structure data address if there's no Linker List, set as '0'.
Definition at line 369 of file lpc17xx_gpdma.h.
| uint32_t DstConn |
Peripheral Destination Connection type, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_M2P or GPDMA_TRANSFERTYPE_P2P, should be one of following:
- GPDMA_CONN_SSP0_Tx: SSP0, Tx
- GPDMA_CONN_SSP0_Rx: SSP0, Rx
- GPDMA_CONN_SSP1_Tx: SSP1, Tx
- GPDMA_CONN_SSP1_Rx: SSP1, Rx
- GPDMA_CONN_ADC: ADC
- GPDMA_CONN_I2S_Channel_0: I2S Channel 0
- GPDMA_CONN_I2S_Channel_1: I2S Channel 1
- GPDMA_CONN_DAC: DAC
- GPDMA_CONN_UART0_Tx_MAT0_0: UART0 Tx / MAT0.0
- GPDMA_CONN_UART0_Rx_MAT0_1: UART0 Rx / MAT0.1
- GPDMA_CONN_UART1_Tx_MAT1_0: UART1 Tx / MAT1.0
- GPDMA_CONN_UART1_Rx_MAT1_1: UART1 Rx / MAT1.1
- GPDMA_CONN_UART2_Tx_MAT2_0: UART2 Tx / MAT2.0
- GPDMA_CONN_UART2_Rx_MAT2_1: UART2 Rx / MAT2.1
- GPDMA_CONN_UART3_Tx_MAT3_0: UART3 Tx / MAT3.0
- GPDMA_CONN_UART3_Rx_MAT3_1: UART3 Rx / MAT3.1.
Definition at line 349 of file lpc17xx_gpdma.h.
| uint32_t DstMemAddr |
Physical Destination Address, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_M2M or GPDMA_TRANSFERTYPE_P2M.
Definition at line 321 of file lpc17xx_gpdma.h.
| uint32_t SrcConn |
Peripheral Source Connection type, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_P2M or GPDMA_TRANSFERTYPE_P2P, should be one of following:
- GPDMA_CONN_SSP0_Tx: SSP0, Tx
- GPDMA_CONN_SSP0_Rx: SSP0, Rx
- GPDMA_CONN_SSP1_Tx: SSP1, Tx
- GPDMA_CONN_SSP1_Rx: SSP1, Rx
- GPDMA_CONN_ADC: ADC
- GPDMA_CONN_I2S_Channel_0: I2S Channel 0
- GPDMA_CONN_I2S_Channel_1: I2S Channel 1
- GPDMA_CONN_DAC: DAC
- GPDMA_CONN_UART0_Tx_MAT0_0: UART0 Tx / MAT0.0
- GPDMA_CONN_UART0_Rx_MAT0_1: UART0 Rx / MAT0.1
- GPDMA_CONN_UART1_Tx_MAT1_0: UART1 Tx / MAT1.0
- GPDMA_CONN_UART1_Rx_MAT1_1: UART1 Rx / MAT1.1
- GPDMA_CONN_UART2_Tx_MAT2_0: UART2 Tx / MAT2.0
- GPDMA_CONN_UART2_Rx_MAT2_1: UART2 Rx / MAT2.1
- GPDMA_CONN_UART3_Tx_MAT3_0: UART3 Tx / MAT3.0
- GPDMA_CONN_UART3_Rx_MAT3_1: UART3 Rx / MAT3.1.
Definition at line 329 of file lpc17xx_gpdma.h.
| uint32_t SrcMemAddr |
Physical Source Address, used in case TransferType is chosen as GPDMA_TRANSFERTYPE_M2M or GPDMA_TRANSFERTYPE_M2P.
Definition at line 319 of file lpc17xx_gpdma.h.
| uint32_t TransferSize |
Length/Size of transfer.
Definition at line 317 of file lpc17xx_gpdma.h.
| uint32_t TransferType |
Transfer Type, should be one of the following:
- GPDMA_TRANSFERTYPE_M2M: Memory to memory - DMA control
- GPDMA_TRANSFERTYPE_M2P: Memory to peripheral - DMA control
- GPDMA_TRANSFERTYPE_P2M: Peripheral to memory - DMA control
- GPDMA_TRANSFERTYPE_P2P: Source peripheral to destination peripheral - DMA control.
Definition at line 323 of file lpc17xx_gpdma.h.
| uint32_t TransferWidth |
Transfer width - used for TransferType is GPDMA_TRANSFERTYPE_M2M only.
Definition at line 318 of file lpc17xx_gpdma.h.
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