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spi: change CSR to CSRStorage

This commit is contained in:
Ilia Sergachev 2019-07-12 14:12:51 +02:00
parent be280bed5e
commit dacec6aa86
1 changed files with 3 additions and 3 deletions
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6
litex/soc/cores/spi.py Normal file → Executable file
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@ -26,7 +26,7 @@ class SPIMaster(Module, AutoCSR):
pads = Record(self.pads_layout)
self.pads = pads
self._control = CSR(16)
self._control = CSRStorage(16)
self._status = CSRStatus(1)
self._mosi = CSRStorage(data_width)
self._miso = CSRStatus(data_width)
@ -47,8 +47,8 @@ class SPIMaster(Module, AutoCSR):
done = Signal()
# XFER start: initialize SPI XFER on SPI_CONTROL_START write and latch length
self.comb += start.eq(self._control.re & self._control.r[SPI_CONTROL_START])
self.sync += If(self._control.re, length.eq(self._control.r[SPI_CONTROL_LENGTH:]))
self.comb += start.eq(self._control.re & self._control.storage[SPI_CONTROL_START])
self.sync += If(self._control.re, length.eq(self._control.storage[SPI_CONTROL_LENGTH:]))
# XFER done
self.comb += self._status.status[SPI_STATUS_DONE].eq(done)