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Hooks for SPI DMA support (incomplete)

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2145 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2009-10-16 19:46:32 +00:00
parent 20862e7bb5
commit b33074dcda
1 changed files with 5 additions and 7 deletions
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12
configs/stm3210e-eval/README.txt
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@ -347,13 +347,11 @@ STM3210E-EVAL-specific Configuration Options
CONFIG_U[S]ARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity
CONFIG_U[S]ARTn_2STOP - Two stop bits
CONFIG_SPI_POLLWAIT - Select to disable interrupt driven SPI support.
Poll-waiting is recommended if the interrupt rate would be to
high in the interrupt driven case.
CONFIG_SPI_TXLIMIT - Write this many words to the Tx FIFO before
emptying the Rx FIFO. If the SPI frequency is high and this
value is large, then larger values of this setting may cause
Rx FIFO overrun errors. Default: half of the Tx FIFO size (4).
CONFIG_STM32_SPI_INTERRUPT - Select to enable interrupt driven SPI
support. Non-interrupt-driven, poll-waiting is recommended if the
interrupt rate would be to high in the interrupt driven case.
CONFIG_STM32_SPI_DMA - Use DMA to improve SPI transfer performance.
Cannot be used with CONFIG_STM32_SPI_INTERRUPT.
Configurations
^^^^^^^^^^^^^^