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面向对象方式拆分

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This commit is contained in:
RuigeLee
2026-02-05 10:53:33 +08:00
parent 6d69760a4e
commit fb683c1b56
1 changed files with 106 additions and 38 deletions
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144
src/main/scala/backBoard/shin/SpiInterface.scala
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@@ -39,7 +39,7 @@ abstract class SpiInterfaceBase extends Module with RequireAsyncReset{
//数据信号相对SCK的稳定应该由外部主机保证，因此认为SCK采样时刻，数据都是稳定正确的
val shiftSCK = ShiftRegisters(sck, 3, false.B, true.B)
val shiftCSn = ShiftRegisters(csn, 3, true.B, true.B)
val shiftMOSI = Wire(Bool())
val isSckPosedge = ~shiftSCK(2) & shiftSCK(1)
@@ -87,6 +87,56 @@ abstract class SpiInterfaceBase extends Module with RequireAsyncReset{
spiCnt := spiCnt + 1.U
}
val shiftMOSI = Wire(Bool())
}
trait SpiOp444 extends SpiInterfaceBase{
val shiftDat = Wire(UInt(4.W))
when( shiftCSn(2) & ~shiftCSn(1) ){ //CS下跳
spiLenTemp := 0.U
spiLen := 2.U
} .elsewhen(isSckPosedge & ~shiftCSn(1) & bitSel.andR & byteSel === 2.U){ //CS为低，且SCK上跳的第0byte
spiLenTemp := Cat( shiftDat, 0.U(8.W) )
} .elsewhen(isSckPosedge & ~shiftCSn(1) & bitSel.andR & byteSel === 3.U) {//CS为低，且SCK上跳的第0byte
spiLenTemp := Cat(spiLenTemp(11,8), exRegi(3,0), shiftDat)
spiLen := Cat(spiLenTemp(11,8), exRegi(3,0), shiftDat)
}
when( shiftCSn(2) & ~shiftCSn(1) ){ //CS下跳
addrr := 0.U
} .elsewhen(isSckPosedge & ~shiftCSn(1) & bitSel.andR & byteSel === 0.U){ //CS为低，且SCK上跳的第0byte
addrr := Cat( exRegi(3,0), shiftDat)
} .elsewhen(isSckPosedge & ~shiftCSn(1) & bitSel.andR & byteSel === 1.U) {//CS为低，且SCK上跳的第0byte
addrr := Cat(addrr(7,0), exRegi(3,0), shiftDat)
} .otherwise{ // byteSel > 1.U
when( isSckPosedge & byteSel >= 3.U & bitSel === 0.U ){
addrr := addrr + 1.U
}
}
when( shiftCSn(2) & ~shiftCSn(1) ){ //CS下跳
addrw := 0.U
} .elsewhen(isSckPosedge & ~shiftCSn(1) & bitSel.andR & byteSel === 0.U){ //CS为低，且SCK上跳的第0byte
addrw := Cat( exRegi(3,0), shiftDat )
} .elsewhen(isSckPosedge & ~shiftCSn(1) & bitSel.andR & byteSel === 1.U) {//CS为低，且SCK上跳的第0byte
addrw := Cat(addrw(7,0), exRegi(3,0), shiftDat )
} .otherwise{ // byteSel > 1.U
when( isSckPosedgeNext(0) & byteSelNext >= 4.U & bitSelNext.andR ){
addrw := addrw + 1.U
}
}
when( shiftCSn(2) & ~shiftCSn(1) || (~shiftCSn(2) & shiftCSn(1)) ){ //CS下跳或上跳
spiCmd := 0.U
} .elsewhen( isSckPosedge & ~shiftCSn(1) & byteSel === 2.U & bitSel === 0.U ){ //CS为低，且SCK上跳的第0byte
spiCmd := shiftDat.extract(3)
}
}
trait SpiOp114 extends SpiInterfaceBase{
when( shiftCSn(2) & ~shiftCSn(1) ){ //CS下跳
spiLenTemp := 0.U
spiLen := 2.U
@@ -128,7 +178,8 @@ abstract class SpiInterfaceBase extends Module with RequireAsyncReset{
}
}
class SSpiInterface extends SpiInterfaceBase{
class SSpi extends SpiInterfaceBase with SpiOp114{
val spi = IO(new SSPIInterfaceIO)
shiftMOSI := ShiftRegister(spi.mosi, 2, false.B, true.B)
@@ -168,49 +219,19 @@ class SSpiInterface extends SpiInterfaceBase{
}
class QSpiInterface(edge: Boolean) extends SpiInterfaceBase{
trait QSpiInterface(edge: Boolean) extends SpiInterfaceBase{
val qspi = IO(new QSPIInterfaceIO)
val shiftDat = ShiftRegisters(qspi.mosi, 3, 0.U(4.W), true.B)
shiftMOSI := shiftDat(1).extract(0)
shiftDat := ShiftRegister(qspi.mosi, 2, 0.U(4.W), true.B)
shiftMOSI := shiftDat.extract(0)
sck := qspi.sck
csn := qspi.csn
qspi.miso := exRego(7, 4)
qspi.isDirIn := isSpiWrite || byteSel < 4.U
when( shiftCSn(2) & ~shiftCSn(1) ){
bitSel := 0.U
} .elsewhen( isSckPosedge & ~shiftCSn(1) ){
when( byteSel <= 3.U ){
bitSel := bitSel + 1.U
} .otherwise{
bitSel := ~bitSel
}
}
//输入看SCK上升沿
when( isSckPosedge & ~shiftCSn(1) ){
when( byteSel <= 3.U ){
when( bitSel === 0.U ){
exRegi := Cat( 0.U, shiftMOSI )
}.otherwise{
exRegi := Cat( exRegi(6,0), shiftMOSI )
}
} .otherwise{
when( bitSel === 0.U ){
exRegi := Cat( 0.U, shiftDat(1) )
}.otherwise{
exRegi := Cat( exRegi(3,0), shiftDat(1) )
}
}
}
//输出在SCK XX沿准备数据
when( shiftCSn(2) & ~shiftCSn(1) ){ //CS下跳
exRego := 0.U //第一个byte 地址0
@@ -229,8 +250,55 @@ class QSpiInterface(edge: Boolean) extends SpiInterfaceBase{
}
}
}
class QSpi444 extends SpiInterfaceBase with SpiOp444 with QSpiInterface{
//输入看SCK上升沿
when( isSckPosedge & ~shiftCSn(1) ){
when( bitSel === 0.U ){
exRegi := Cat( 0.U, shiftDat )
}.otherwise{
exRegi := Cat( exRegi(3,0), shiftDat )
}
}
when( shiftCSn(2) & ~shiftCSn(1) ){
bitSel := 0.U
} .elsewhen( isSckPosedge & ~shiftCSn(1) ){
bitSel := ~bitSel
}
}
class QSpi114 extends SpiInterfaceBase with SpiOp114 with QSpiInterface{
//输入看SCK上升沿
when( isSckPosedge & ~shiftCSn(1) ){
when( byteSel <= 3.U ){
when( bitSel === 0.U ){
exRegi := Cat( 0.U, shiftMOSI )
}.otherwise{
exRegi := Cat( exRegi(6,0), shiftMOSI )
}
} .otherwise{
when( bitSel === 0.U ){
exRegi := Cat( 0.U, shiftDat )
}.otherwise{
exRegi := Cat( exRegi(3,0), shiftDat )
}
}
}
when( shiftCSn(2) & ~shiftCSn(1) ){
bitSel := 0.U
} .elsewhen( isSckPosedge & ~shiftCSn(1) ){
when( byteSel <= 3.U ){
bitSel := bitSel + 1.U
} .otherwise{
bitSel := ~bitSel
}
}
}