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xRingbufferSendFromISR() function
Insert an item into the ring buffer in an ISR Attempt to insert an item into the ring buffer from an ISR. This function will return immediately if there is insufficient free space in the buffer.
Syntax
BaseType_t xRingbufferSendFromISR(RingbufHandle_t xRingbuffer,
const void *pvItem,
size_t xItemSize,
BaseType_t *pxHigherPriorityTaskWoken);
Implemented in ![]()
ringbuf.c:1053
Return value
- pdTRUE if succeeded - pdFALSE when the ring buffer does not have space.
Notes
For no-split/allow-split ring buffers, the actual size of memory that the item will occupy will be rounded up to the nearest 32-bit aligned size. This is done to ensure all items are always stored in 32-bit aligned fashion. For no-split/allow-split buffers, an xItemSize of 0 will result in an item with no data being set (i.e., item only contains the header). For byte buffers, an xItemSize of 0 will simply return pdTRUE without copying any data.