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fix counter error

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xinyangli 2024-01-10 20:51:23 +08:00
parent 1118f64668
commit 674702b552
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2 changed files with 21 additions and 8 deletions
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5
npc/core/src/main/scala/Main.scala
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@ -13,7 +13,7 @@ class Switch extends Module {
io.out := io.sw(0) ^ io.sw(1)
}
import npc.util.{PS2Port, KeyboardController, SegGenerator}
import npc.util.{PS2Port, KeyboardController, SegControllerGenerator}
class Keyboard extends Module {
val io = IO(new Bundle {
@ -21,7 +21,7 @@ class Keyboard extends Module {
val segs = Output(Vec(8, UInt(8.W)))
})
val seg_handler = Module(new SegGenerator(seg_count = 8))
val seg_handler = Module(new SegControllerGenerator(seg_count = 8))
val keyboard_controller = Module(new KeyboardController)
seg_handler.io.keycode <> keyboard_controller.io.out
@ -30,4 +30,3 @@ class Keyboard extends Module {
io.segs := seg_handler.io.segs
}
class SegHandler extends SegGenerator(8) { }

24
npc/core/src/main/scala/SegGenerator.scala → npc/core/src/main/scala/SegControllerGenerator.scala
View file

@ -4,7 +4,7 @@ import chisel3._
import chisel3.util._
import chisel3.util.log2Ceil
class SegGenerator(seg_count: Int) extends Module {
class SegControllerGenerator(seg_count: Int) extends Module {
val io = IO(new Bundle {
val keycode = Flipped(Decoupled(UInt(8.W)))
val segs = Output(Vec(seg_count, UInt(8.W)))
@ -32,16 +32,30 @@ class SegGenerator(seg_count: Int) extends Module {
0x25.U, 0x2E.U, 0x36.U, 0x3D.U, 0x3E.U, 0x46.U,
).zip(((0x41 to 0x5A) ++ (0x30 to 0x39)).map(_.U))
val keycode = RegEnable(io.keycode.bits, io.keycode.ready && io.keycode.valid)
val keycode = RegInit(0.U(8.W))
val counter = Counter(0xFF)
val release_state = RegInit(Bool(), false.B)
when(io.keycode.ready && io.keycode.valid) {
when(io.keycode.bits === 0xF0.U) {
release_state := true.B
}.elsewhen(!release_state) {
keycode := io.keycode.bits
counter.inc()
}.otherwise{
// Release code on io.keycode.bits
release_state := false.B
}
}
val keycode_digits = VecInit(keycode(3,0)) ++ VecInit(keycode(7,4))
val keycode_seg = keycode_digits.map(MuxLookup(_, 0xFF.U)(digit_to_seg))
val ascii = MuxLookup(keycode, 0.U)(keycode_to_ascii)
val ascii_digits = VecInit(ascii(3,0)) ++ VecInit(ascii(6,4))
val ascii_seg = ascii_digits.map(MuxLookup(_, 0xFF.U)(digit_to_seg))
val (counter, _) = Counter(io.keycode.valid && io.keycode.ready && io.keycode.bits =/= keycode, 0xFF)
val count_digits = VecInit(counter(3,0)) ++ VecInit(counter(7,4))
val count_seg = count_digits.map(MuxLookup(_, 0xFF.U)(digit_to_seg))
val count_digits = VecInit(counter.value(3,0)) ++ VecInit(counter.value(7,4))
val count_seg = count_digits.map(MuxLookup(_, 0xFF.U)(digit_to_seg))
seg_regs := keycode_seg ++ ascii_seg ++ count_seg ++ Seq(0xFF.U, 0xFF.U)
io.segs := seg_regs