Added comment for SPI transfer API

bhmanda-silabs · bhmanda-silabs · commit 66d2a865d057 · 2025-01-22T19:10:47.000+05:30
diff --git a/src/platform/silabs/wifi/SiWx/ncp/efx32_ncp_host.c b/src/platform/silabs/wifi/SiWx/ncp/efx32_ncp_host.c
@@ -105,6 +105,7 @@ Ecode_t si91x_SPIDRV_MTransfer(SPIDRV_Handle_t handle, const void * txBuffer, vo
     uint8_t * tx          = (txBuffer != NULL) ? (uint8_t *) txBuffer : dummy_buffer;
     uint8_t * rx          = (rxBuffer != NULL) ? (uint8_t *) rxBuffer : dummy_buffer;
 
+    // For transfers less than 16 bytes, directly interacting with USART buffers is faster than using DMA
     if (count < 16)
     {
         while (count > 0)

Original file line number	Diff line number	Diff line change
`@@ -105,6 +105,7 @@ Ecode_t si91x_SPIDRV_MTransfer(SPIDRV_Handle_t handle, const void * txBuffer, vo`
`105`	`105`	`uint8_t * tx = (txBuffer != NULL) ? (uint8_t *) txBuffer : dummy_buffer;`
`106`	`106`	`uint8_t * rx = (rxBuffer != NULL) ? (uint8_t *) rxBuffer : dummy_buffer;`
`107`	`107`
	`108`	`+ // For transfers less than 16 bytes, directly interacting with USART buffers is faster than using DMA`
`108`	`109`	`if (count < 16)`
`109`	`110`	`{`
`110`	`111`	`while (count > 0)`