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emac_esp_dma_transmit_multiple_buf_frame() function
Transmit data from multiple buffers over EMAC in single Ethernet frame. Data will be joint into single frame in order in which the buffers are stored in input array. @pre @p lengths array must have the same size as @p buffs array and their elements need to be stored in the same order, i.e. lengths[1] is a length associated with data buffer referenced at buffs[1] position.
Syntax
uint32_t emac_esp_dma_transmit_multiple_buf_frame(emac_esp_dma_handle_t emac_esp_dma,
uint8_t **buffs,
uint32_t *lengths,
uint32_t buffs_cnt);
Implemented in ![]()
esp_eth_mac_esp_dma.c:186
Return value
number of transmitted bytes on success zero on fail
Related Functions
Found 11 other functions taking a ![]()
emac_esp_dma_t
argument:
Function
Description
Flush frame stored in Rx DMA
Copy received Ethernet frame from EMAC DMA memory space to application.
Get number of frames remaining in Rx DMA
Deletes the ESP EMAC DMA instance
Reset DMA
Transmit data from buffer over EMAC
Allocate buffer with size equal to actually received Ethernet frame size.
Set the Transmit Descriptor Word 0 (TDES0) control bits
Clear the Transmit Descriptor Word 0 (TDES0) control bits
Creates a new instance of the ESP EMAC DMA