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Since the _NEOLED_CTRL_STROBE_ flag is also buffered in the TX buffer, the RESET command is treated just as another
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Since the _NEOLED_CTRL_STROBE_ flag is also buffered in the TX buffer, the RESET command is treated just as another
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data word being written to the TX buffer making busy wait concepts obsolete and allowing maximum refresh rates.
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data word being written to the TX buffer making busy wait concepts obsolete and allowing maximum refresh rates.
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**Interrupt**
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**NEOLED Interrupt**
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The NEOLED modules features a single interrupt that becomes pending based on the current TX buffer fill level.
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The NEOLED modules features a single interrupt that becomes pending based on the current TX buffer fill level.
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The interrupt can only become pending if the NEOLED module is enabled. The specific interrupt condition
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The interrupt can only become pending if the NEOLED module is enabled. The specific interrupt condition
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is configured via the _NEOLED_CTRL_IRQ_CONF_ in the control register `NEORV32_NEOLED.CTRL`.
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is configured via the _NEOLED_CTRL_IRQ_CONF_ bit in the unit's control register.
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If _NEOLED_CTRL_IRQ_CONF_ is cleared, an interrupt is generated whenever the TX FIFO is _less than half-full_.
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If _NEOLED_CTRL_IRQ_CONF_ is cleared, an interrupt is generated whenever the TX FIFO _becomes_ less than half-full.
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In this case software can write up to _IO_NEOLED_TX_FIFO_/2 new data words to `DATA` without checking the FIFO
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In this case software can write up to _IO_NEOLED_TX_FIFO_/2 new data words to `DATA` without checking the FIFO
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status flags. The interrupt request is cleared whenever the FIFO fill level is above _half-full_ level or if
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status flags. If _NEOLED_CTRL_IRQ_CONF_ is set, an interrupt is generated whenever the TX FIFO _becomes_ empty.
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the NEOLED module is disabled.
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If _NEOLED_CTRL_IRQ_CONF_ is set, an interrupt is generated whenever the TX FIFO is _empty_. The interrupt
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A pending interrupt request is cleared is cleared by any of the following operations:
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request is cleared again when the FIFO contains at least one data word.
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* write access to `NEORV32_NEOLED.DATA` (for example to send more LED data)
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* write access to `NEORV32_NEOLED.CTRL`
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* disabling the NEOLED module
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[NOTE]
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[NOTE]
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The _NEOLED_CTRL_IRQ_CONF_ is hardwired to one if _IO_NEOLED_TX_FIFO_ = 1 (-> IRQ if FIFO is empty).
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The _NEOLED_CTRL_IRQ_CONF_ is hardwired to one if _IO_NEOLED_TX_FIFO_ = 1 (-> IRQ if FIFO is empty).
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If the FIFO is configured to contain only a single entry (_IO_NEOLED_TX_FIFO_ = 1) the interrupt
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If the FIFO is configured to contain only a single entry (_IO_NEOLED_TX_FIFO_ = 1) the interrupt
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