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Make software USART used in the XPLAINBridge project directly check and store into the ring buffers, rather than polling from the main program loop to avoid added latency.

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This commit is contained in:
Dean Camera 2010-05-26 06:59:55 +00:00
parent 9b29d1dc50
commit 79742c5d24
5 changed files with 42 additions and 68 deletions
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13
Projects/XPLAINBridge/Lib/LightweightRingBuff.h
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@ -53,13 +53,15 @@
RingBuff_Data_t Buffer[BUFFER_SIZE];
RingBuff_Data_t* In;
RingBuff_Data_t* Out;
uint8_t Count;
} RingBuff_t;
/* Inline Functions: */
static inline void RingBuffer_InitBuffer(RingBuff_t* const Buffer)
{
Buffer->In = Buffer->Buffer;
Buffer->Out = Buffer->Buffer;
Buffer->Out = Buffer->Buffer;
Buffer->Count = 0;
}
static inline void RingBuffer_Insert(RingBuff_t* const Buffer, RingBuff_Data_t Data)
@ -68,6 +70,8 @@
if (++Buffer->In == &Buffer->Buffer[BUFFER_SIZE])
Buffer->In = Buffer->Buffer;
Buffer->Count++;
}
static inline RingBuff_Data_t RingBuffer_Remove(RingBuff_t* const Buffer)
@ -77,12 +81,9 @@
if (++Buffer->Out == &Buffer->Buffer[BUFFER_SIZE])
Buffer->Out = Buffer->Buffer;
return Data;
}
Buffer->Count--;
static inline bool RingBuffer_Empty(RingBuff_t* const Buffer)
{
return (Buffer->In == Buffer->Out);
return Data;
}
#endif