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runtime/atsamd21: i2s initialization fixes

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This commit is contained in:
Mark Glines
2019-11-16 07:24:14 -05:00
committed by Ron Evans
parent 5171618284
commit 00f745e351
1 changed files with 7 additions and 7 deletions
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src/machine/machine_atsamd21.go
+7 -7
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@@ -877,29 +877,29 @@ func (i2s I2S) Configure(config I2SConfig) {
// now set serializer data size. // now set serializer data size.
switch config.DataFormat { switch config.DataFormat {
case I2SDataFormat8bit: case I2SDataFormat8bit:
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_8) i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_8 << sam.I2S_SERCTRL_DATASIZE_Pos)
case I2SDataFormat16bit: case I2SDataFormat16bit:
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_16) i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_16 << sam.I2S_SERCTRL_DATASIZE_Pos)
case I2SDataFormat24bit: case I2SDataFormat24bit:
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_24) i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_24 << sam.I2S_SERCTRL_DATASIZE_Pos)
case I2SDataFormat32bit: case I2SDataFormat32bit:
case I2SDataFormatDefault: case I2SDataFormatDefault:
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_32) i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_DATASIZE_32 << sam.I2S_SERCTRL_DATASIZE_Pos)
} }
// set serializer slot adjustment // set serializer slot adjustment
if config.Standard == I2SStandardLSB { if config.Standard == I2SStandardLSB {
// adjust right // adjust right
i2s.Bus.SERCTRL1.ClearBits(sam.I2S_SERCTRL_SLOTADJ) i2s.Bus.SERCTRL1.ClearBits(sam.I2S_SERCTRL_SLOTADJ)
// transfer LSB first
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_BITREV)
} else { } else {
// adjust left // adjust left
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_SLOTADJ) i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_SLOTADJ)
// reverse bit order?
i2s.Bus.SERCTRL1.SetBits(sam.I2S_SERCTRL_BITREV)
} }
// set serializer mode. // set serializer mode.