From 19e94bc0328a31a0bedb033e2b32241cc7e98cc3 Mon Sep 17 00:00:00 2001
From: Eric Brombaugh <ebrombaugh1@cox.net>
Date: Sun, 26 Jul 2020 14:57:49 -0700
Subject: [PATCH] Add OrangeCrab R0.2 servant target

Added OrangeCrab R0.2 servant target
---
 README.md                    |  8 +++
 data/orangecrab_r02.lpf      | 17 +++++++
 servant.core                 | 15 ++++++
 servant/servant_orangecrab.v | 96 ++++++++++++++++++++++++++++++++++++
 4 files changed, 136 insertions(+)
 create mode 100644 data/orangecrab_r02.lpf
 create mode 100644 servant/servant_orangecrab.v

diff --git a/README.md b/README.md
index b90d4e1..7c68ab3 100644
--- a/README.md
+++ b/README.md
@@ -101,6 +101,14 @@ Pin 9 is used for UART output with 57600 baud rate.
     cd $SERV/workspace
     fusesoc run --target=icebreaker servant
 
+### OrangeCrab R0.2
+
+Pin D1 is used for UART output with 115200 baud rate.
+
+    cd $SERV/workspace
+    fusesoc run --target=orangecrab_r0.2 servant
+    dfu-util -d 1209:5af0 -D build/servant_1.0.2/orangecrab_r0.2-trellis/servant_1.0.2.bit
+
 ### Arty A7 35T
 
 Pin D10 (uart_rxd_out) is used for UART output with 57600 baud rate (to use
diff --git a/data/orangecrab_r02.lpf b/data/orangecrab_r02.lpf
new file mode 100644
index 0000000..2a96dde
--- /dev/null
+++ b/data/orangecrab_r02.lpf
@@ -0,0 +1,17 @@
+LOCATE COMP "clk" SITE "A9";
+IOBUF  PORT "clk" PULLMODE=NONE IO_TYPE=LVCMOS33;
+FREQUENCY PORT "clk" 48.000 MHZ;
+
+LOCATE COMP "r" SITE "K4";
+LOCATE COMP "g" SITE "M3";
+LOCATE COMP "b" SITE "J3";
+
+IOBUF PORT "r" IO_TYPE=LVCMOS33;
+IOBUF PORT "g" IO_TYPE=LVCMOS33;
+IOBUF PORT "b" IO_TYPE=LVCMOS33;
+
+LOCATE COMP "btn" SITE "J17";  # BTN_PWRn (inverted logic)
+IOBUF PORT "btn" PULLMODE=UP IO_TYPE=LVCMOS33;
+
+LOCATE COMP "tx" SITE "M18"; # FPGA serial output
+IOBUF PORT "tx" PULLMODE=UP IO_TYPE=LVCMOS33 DRIVE=4;
diff --git a/servant.core b/servant.core
index 0be6684..df41dba 100644
--- a/servant.core
+++ b/servant.core
@@ -64,6 +64,11 @@ filesets:
       - servant/servix.v : {file_type : verilogSource}
       - data/arty_a7_35t.xdc : {file_type : xdc}
 
+  orangecrab:
+    files:
+      - data/orangecrab_r02.lpf : {file_type : LPF}
+      - servant/servant_orangecrab.v : {file_type : verilogSource}
+
   pipistrello:
     files:
       - servant/servis_clock_gen.v : {file_type : verilogSource}
@@ -175,6 +180,16 @@ targets:
       vivado: {part : xc7a35ticsg324-1L}
     toplevel : servix
 
+  orangecrab_r0.2:
+    default_tool: trellis
+    description : OrangeCrab R0.2
+    filesets : [mem_files, soc, orangecrab]
+    parameters : [memfile, memsize]
+    tools:
+      trellis:
+        nextpnr_options : [--package, CSFBGA285, --25k]
+    toplevel: servant_orangecrab
+
   pipistrello:
     default_tool: ise
     description : Saanlima pipistrello
diff --git a/servant/servant_orangecrab.v b/servant/servant_orangecrab.v
new file mode 100644
index 0000000..a82c9bf
--- /dev/null
+++ b/servant/servant_orangecrab.v
@@ -0,0 +1,96 @@
+`default_nettype none
+module servant_orangecrab
+(
+ input wire  clk,
+ input wire btn,
+ output wire r,
+ output wire g,
+ output wire b,
+ output wire tx
+);
+
+   parameter memfile = "zephyr_hello.hex";
+   parameter memsize = 8192;
+
+   wire      wb_clk;
+   wire      pll_locked;
+    EHXPLLL #(
+        .CLKI_DIV(6),
+        .CLKFB_DIV(4),
+        .CLKOP_DIV(15),
+        .CLKOS_DIV(8),
+        .CLKOS2_DIV(8),
+        .CLKOS3_DIV(8),
+        .CLKOP_ENABLE("ENABLED"),
+        .CLKOS_ENABLE("DISABLED"),
+        .CLKOS2_ENABLE("DISABLED"),
+        .CLKOS3_ENABLE("DISABLED"),
+        .CLKOP_CPHASE(0),
+        .CLKOS_CPHASE(0),
+        .CLKOS2_CPHASE(0),
+        .CLKOS3_CPHASE(0),
+        .CLKOP_FPHASE(0),
+        .CLKOS_FPHASE(0),
+        .CLKOS2_FPHASE(0),
+        .CLKOS3_FPHASE(0),
+        .FEEDBK_PATH("CLKOP"),
+        .CLKOP_TRIM_POL("RISING"),
+        .CLKOP_TRIM_DELAY(0),
+        .CLKOS_TRIM_POL("RISING"),
+        .CLKOS_TRIM_DELAY(0),
+        .OUTDIVIDER_MUXA("DIVA"),
+        .OUTDIVIDER_MUXB("DIVB"),
+        .OUTDIVIDER_MUXC("DIVC"),
+        .OUTDIVIDER_MUXD("DIVD"),
+        .PLL_LOCK_MODE(0),
+        .PLL_LOCK_DELAY(200),
+        .STDBY_ENABLE("DISABLED"),
+        .REFIN_RESET("DISABLED"),
+        .SYNC_ENABLE("DISABLED"),
+        .INT_LOCK_STICKY("ENABLED"),
+        .DPHASE_SOURCE("DISABLED"),
+        .PLLRST_ENA("DISABLED"),
+        .INTFB_WAKE("DISABLED")
+    ) uPLL (
+        .CLKI(clk),         // ref input
+        .CLKFB(wb_clk),     // ext fb input
+        .PHASESEL1(0),      // msbit phs adj select
+        .PHASESEL0(0),      // lsbit phs adj select
+        .PHASEDIR(0),       // phs adj dir
+        .PHASESTEP(0),      // phs adj step
+        .PHASELOADREG(0),   // load phs adj
+        .STDBY(0),          // power down pll
+        .PLLWAKESYNC(0),    // int/ext fb switching @ wakeup
+        .RST(0),            // pll reset
+        .ENCLKOP(1),        // primary output enable
+        .ENCLKOS(0),        // secondary output enable
+        .ENCLKOS2(0),       // secondary output enable
+        .ENCLKOS3(0),       // secondary output enable
+        .CLKOP(wb_clk),     // primary output
+        .CLKOS(),           // secondary output
+        .CLKOS2(),          // secondary output
+        .CLKOS3(),          // secondary output
+        .LOCK(pll_locked),  // lock indicator
+        .INTLOCK(),         // internal lock indictor
+        .REFCLK(),          // output of ref select mux
+        .CLKINTFB()         // internal fb
+    );
+
+   reg wb_rst;
+   always @(posedge wb_clk)
+       wb_rst <= ~pll_locked;
+   
+   wire q;
+   servant
+     #(.memfile (memfile),
+       .memsize (memsize))
+   servant
+     (.wb_clk (wb_clk),
+      .wb_rst (wb_rst),
+      .q      (q));
+
+   assign r = q;
+   assign g = q;
+   assign b = q;
+   assign tx = q;
+endmodule