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-rw-r--r--docs/index.html64
-rw-r--r--examples/icestick/Makefile4
-rw-r--r--examples/icestick/rs232demo.v124
-rw-r--r--examples/icestick/rs232demo_tb.v5
4 files changed, 157 insertions, 40 deletions
diff --git a/docs/index.html b/docs/index.html
index 7e718e7..35fd2ec 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -75,37 +75,37 @@ Here is a list of currently supported parts and the corresponding options for ar
</p>
<table class="ctab">
-<tr><th>Part</th><th>Package</th><th>Pin Spacing</th><th>I/Os</th><th>arachne-pnr opts</th><th>icetime opts</th></tr>
-<tr><td>iCE40-LP1K-SWG16TR</td><td>16-ball WLCSP (1.40 x 1.48 mm)</td><td>0.35 mm</td><td>10</td><td>-d 1k -P swg16tr</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-UP3K-UWG30</td><td>30-ball WLCSP (2.15 x 2.55 mm)</td><td>0.40 mm</td><td>21</td><td>-d 5k -P uwg30</td><td>-d up5k</td></tr>
-<tr><td>iCE40-UP5K-UWG30</td><td>30-ball WLCSP (2.15 x 2.55 mm)</td><td>0.40 mm</td><td>21</td><td>-d 5k -P uwg30</td><td>-d up5k</td></tr>
-<tr><td>iCE40-LP384-CM36</td><td>36-ball ucBGA (2.5 x 2.5 mm)</td><td>0.40 mm</td><td>25</td><td>-d 384 -P cm36</td><td>-d lp384</td></tr>
-<tr><td>iCE40-LP1K-CM36</td><td>36-ball ucBGA (2.5 x 2.5 mm)</td><td>0.40 mm</td><td>25</td><td>-d 1k -P cm36</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-LP384-CM49</td><td>49-ball ucBGA (3 x 3 mm)</td><td>0.40 mm</td><td>37</td><td>-d 384 -P cm49</td><td>-d lp384</td></tr>
-<tr><td>iCE40-LP1K-CM49</td><td>49-ball ucBGA (3 x 3 mm)</td><td>0.40 mm</td><td>35</td><td>-d 1k -P cm49</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-LP1K-CM81</td><td>81-ball ucBGA (4 x 4 mm)</td><td>0.40 mm</td><td>63</td><td>-d 1k -P cm81</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-LP4K-CM81</td><td>81-ball ucBGA (4 x 4 mm)</td><td>0.40 mm</td><td>63</td><td>-d 8k -P cm81:4k</td><td>-d lp8k</td></tr>
-<tr><td>iCE40-LP8K-CM81</td><td>81-ball ucBGA (4 x 4 mm)</td><td>0.40 mm</td><td>63</td><td>-d 8k -P cm81</td><td>-d lp8k</td></tr>
-<tr><td>iCE40-LP1K-CM121</td><td>121-ball ucBGA (5 x 5 mm)</td><td>0.40 mm</td><td>95</td><td>-d 1k -P cm121</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-LP4K-CM121</td><td>121-ball ucBGA (5 x 5 mm)</td><td>0.40 mm</td><td>93</td><td>-d 8k -P cm121:4k</td><td>-d lp8k</td></tr>
-<tr><td>iCE40-LP8K-CM121</td><td>121-ball ucBGA (5 x 5 mm)</td><td>0.40 mm</td><td>93</td><td>-d 8k -P cm121</td><td>-d lp8k</td></tr>
-<tr><td>iCE40-LP4K-CM225</td><td>225-ball ucBGA (7 x 7 mm)</td><td>0.40 mm</td><td>167</td><td>-d 8k -P cm225:4k</td><td>-d lp8k</td></tr>
-<tr><td>iCE40-LP8K-CM225</td><td>225-ball ucBGA (7 x 7 mm)</td><td>0.40 mm</td><td>178</td><td>-d 8k -P cm225</td><td>-d lp8k</td></tr>
-<tr><td>iCE40-HX8K-CM225</td><td>225-ball ucBGA (7 x 7 mm)</td><td>0.40 mm</td><td>178</td><td>-d 8k -P cm225</td><td>-d hx8k</td></tr>
-<tr><td>iCE40-LP384-QN32</td><td>32-pin QFN (5 x 5 mm)</td><td>0.50 mm</td><td>21</td><td>-d 384 -P qn32</td><td>-d lp384</td></tr>
-<tr><td>iCE40-UP5K-SG48</td><td>48-pin QFN (7 x 7 mm)</td><td>0.50 mm</td><td>39</td><td>-d 5k -P sg48</td><td>-d up5k</td></tr>
-<tr><td>iCE40-LP1K-QN84</td><td>84-pin QFNS (7 x 7 mm)</td><td>0.50 mm</td><td>67</td><td>-d 1k -P qn84</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-LP1K-CB81</td><td>81-ball csBGA (5 x 5 mm)</td><td>0.50 mm</td><td>62</td><td>-d 1k -P cb81</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-LP1K-CB121</td><td>121-ball csBGA (6 x 6 mm)</td><td>0.50 mm</td><td>92</td><td>-d 1k -P cb121</td><td>-d lp1k</td></tr>
-<tr><td>iCE40-HX1K-CB132</td><td>132-ball csBGA (8 x 8 mm)</td><td>0.50 mm</td><td>95</td><td>-d 1k -P cb132</td><td>-d hx1k</td></tr>
-<tr><td>iCE40-HX4K-CB132</td><td>132-ball csBGA (8 x 8 mm)</td><td>0.50 mm</td><td>95</td><td>-d 8k -P cb132:4k</td><td>-d hx8k</td></tr>
-<tr><td>iCE40-HX8K-CB132</td><td>132-ball csBGA (8 x 8 mm)</td><td>0.50 mm</td><td>95</td><td>-d 8k -P cb132</td><td>-d hx8k</td></tr>
-<tr><td>iCE40-HX1K-VQ100</td><td>100-pin VQFP (14 x 14 mm)</td><td>0.50 mm</td><td>72</td><td>-d 1k -P vq100</td><td>-d hx1k</td></tr>
-<tr><td>iCE40-HX1K-TQ144</td><td>144-pin TQFP (20 x 20 mm)</td><td>0.50 mm</td><td>96</td><td>-d 1k -P tq144</td><td>-d hx1k</td></tr>
-<tr><td>iCE40-HX4K-TQ144</td><td>144-pin TQFP (20 x 20 mm)</td><td>0.50 mm</td><td>107</td><td>-d 8k -P tq144:4k</td><td>-d hx8k</td></tr>
-<tr><td>iCE40-HX4K-BG121</td><td>121-ball caBGA (9 x 9 mm)</td><td>0.80 mm</td><td>93</td><td>-d 8k -P bg121:4k</td><td>-d hx8k</td></tr>
-<tr><td>iCE40-HX8K-BG121</td><td>121-ball caBGA (9 x 9 mm)</td><td>0.80 mm</td><td>93</td><td>-d 8k -P bg121</td><td>-d hx8k</td></tr>
-<tr><td>iCE40-HX8K-CT256</td><td>256-ball caBGA (14 x 14 mm)</td><td>0.80 mm</td><td>206</td><td>-d 8k -P ct256</td><td>-d hx8k</td></tr>
+<tr><th>Part</th><th>Package</th><th>Pin Spacing</th><th>I/Os</th><th>nextpnr opts</th><th>arachne-pnr opts</th><th>icetime opts</th></tr>
+<tr><td>iCE40-LP1K-SWG16TR</td><td>16-ball WLCSP (1.40 x 1.48 mm)</td><td>0.35 mm</td><td>10</td><td>--lp1k --package swg16tr</td><td>-d 1k -P swg16tr</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-UP3K-UWG30</td><td>30-ball WLCSP (2.15 x 2.55 mm)</td><td>0.40 mm</td><td>21</td><td>--up5k --package uwg30</td><td>-d 5k -P uwg30</td><td>-d up5k</td></tr>
+<tr><td>iCE40-UP5K-UWG30</td><td>30-ball WLCSP (2.15 x 2.55 mm)</td><td>0.40 mm</td><td>21</td><td>--up5k --package uwg30</td><td>-d 5k -P uwg30</td><td>-d up5k</td></tr>
+<tr><td>iCE40-LP384-CM36</td><td>36-ball ucBGA (2.5 x 2.5 mm)</td><td>0.40 mm</td><td>25</td><td>--lp384 --package cm36</td><td>-d 384 -P cm36</td><td>-d lp384</td></tr>
+<tr><td>iCE40-LP1K-CM36</td><td>36-ball ucBGA (2.5 x 2.5 mm)</td><td>0.40 mm</td><td>25</td><td>--lp1k --package cm36</td><td>-d 1k -P cm36</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-LP384-CM49</td><td>49-ball ucBGA (3 x 3 mm)</td><td>0.40 mm</td><td>37</td><td>--lp384 --package cm49</td><td>-d 384 -P cm49</td><td>-d lp384</td></tr>
+<tr><td>iCE40-LP1K-CM49</td><td>49-ball ucBGA (3 x 3 mm)</td><td>0.40 mm</td><td>35</td><td>--lp1k --package cm49</td><td>-d 1k -P cm49</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-LP1K-CM81</td><td>81-ball ucBGA (4 x 4 mm)</td><td>0.40 mm</td><td>63</td><td>--lp1k --package cm81</td><td>-d 1k -P cm81</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-LP4K-CM81</td><td>81-ball ucBGA (4 x 4 mm)</td><td>0.40 mm</td><td>63</td><td>--lp8k --package cm81:4k</td><td>-d 8k -P cm81:4k</td><td>-d lp8k</td></tr>
+<tr><td>iCE40-LP8K-CM81</td><td>81-ball ucBGA (4 x 4 mm)</td><td>0.40 mm</td><td>63</td><td>--lp9k --package cm81</td><td>-d 8k -P cm81</td><td>-d lp8k</td></tr>
+<tr><td>iCE40-LP1K-CM121</td><td>121-ball ucBGA (5 x 5 mm)</td><td>0.40 mm</td><td>95</td><td>--lp1k --package cm121</td><td>-d 1k -P cm121</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-LP4K-CM121</td><td>121-ball ucBGA (5 x 5 mm)</td><td>0.40 mm</td><td>93</td><td>--lp8k --package cm121:4k</td><td>-d 8k -P cm121:4k</td><td>-d lp8k</td></tr>
+<tr><td>iCE40-LP8K-CM121</td><td>121-ball ucBGA (5 x 5 mm)</td><td>0.40 mm</td><td>93</td><td>--lp8k --package cm121</td><td>-d 8k -P cm121</td><td>-d lp8k</td></tr>
+<tr><td>iCE40-LP4K-CM225</td><td>225-ball ucBGA (7 x 7 mm)</td><td>0.40 mm</td><td>167</td><td>--lp8k --package cm225:4k</td><td>-d 8k -P cm225:4k</td><td>-d lp8k</td></tr>
+<tr><td>iCE40-LP8K-CM225</td><td>225-ball ucBGA (7 x 7 mm)</td><td>0.40 mm</td><td>178</td><td>--lp8k --package cm225</td><td>-d 8k -P cm225</td><td>-d lp8k</td></tr>
+<tr><td>iCE40-HX8K-CM225</td><td>225-ball ucBGA (7 x 7 mm)</td><td>0.40 mm</td><td>178</td><td>--hx8k --package cm225</td><td>-d 8k -P cm225</td><td>-d hx8k</td></tr>
+<tr><td>iCE40-LP384-QN32</td><td>32-pin QFN (5 x 5 mm)</td><td>0.50 mm</td><td>21</td><td>--lp384 --package qn32</td><td>-d 384 -P qn32</td><td>-d lp384</td></tr>
+<tr><td>iCE40-UP5K-SG48</td><td>48-pin QFN (7 x 7 mm)</td><td>0.50 mm</td><td>39</td><td>--up5k --package sg48</td><td>-d 5k -P sg48</td><td>-d up5k</td></tr>
+<tr><td>iCE40-LP1K-QN84</td><td>84-pin QFNS (7 x 7 mm)</td><td>0.50 mm</td><td>67</td><td>--lp1k --package qn84</td><td>-d 1k -P qn84</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-LP1K-CB81</td><td>81-ball csBGA (5 x 5 mm)</td><td>0.50 mm</td><td>62</td><td>--lp1k --package cb81</td><td>-d 1k -P cb81</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-LP1K-CB121</td><td>121-ball csBGA (6 x 6 mm)</td><td>0.50 mm</td><td>92</td><td>--lp1k --package cb121</td><td>-d 1k -P cb121</td><td>-d lp1k</td></tr>
+<tr><td>iCE40-HX1K-CB132</td><td>132-ball csBGA (8 x 8 mm)</td><td>0.50 mm</td><td>95</td><td>--hx1k --package cb132</td><td>-d 1k -P cb132</td><td>-d hx1k</td></tr>
+<tr><td>iCE40-HX4K-CB132</td><td>132-ball csBGA (8 x 8 mm)</td><td>0.50 mm</td><td>95</td><td>--hx8k --package cb132:4k</td><td>-d 8k -P cb132:4k</td><td>-d hx8k</td></tr>
+<tr><td>iCE40-HX8K-CB132</td><td>132-ball csBGA (8 x 8 mm)</td><td>0.50 mm</td><td>95</td><td>--hx8k --package cb132</td><td>-d 8k -P cb132</td><td>-d hx8k</td></tr>
+<tr><td>iCE40-HX1K-VQ100</td><td>100-pin VQFP (14 x 14 mm)</td><td>0.50 mm</td><td>72</td><td>--hx1k --package vq100</td><td>-d 1k -P vq100</td><td>-d hx1k</td></tr>
+<tr><td>iCE40-HX1K-TQ144</td><td>144-pin TQFP (20 x 20 mm)</td><td>0.50 mm</td><td>96</td><td>--hx1k --package tq144</td><td>-d 1k -P tq144</td><td>-d hx1k</td></tr>
+<tr><td>iCE40-HX4K-TQ144</td><td>144-pin TQFP (20 x 20 mm)</td><td>0.50 mm</td><td>107</td><td>--hx8k --package tq144:4k</td><td>-d 8k -P tq144:4k</td><td>-d hx8k</td></tr>
+<tr><td>iCE40-HX4K-BG121</td><td>121-ball caBGA (9 x 9 mm)</td><td>0.80 mm</td><td>93</td><td>--hx8k --package bg121:4k</td><td>-d 8k -P bg121:4k</td><td>-d hx8k</td></tr>
+<tr><td>iCE40-HX8K-BG121</td><td>121-ball caBGA (9 x 9 mm)</td><td>0.80 mm</td><td>93</td><td>--hx8k --package bg121</td><td>-d 8k -P bg121</td><td>-d hx8k</td></tr>
+<tr><td>iCE40-HX8K-CT256</td><td>256-ball caBGA (14 x 14 mm)</td><td>0.80 mm</td><td>206</td><td>--hx8k --package ct256</td><td>-d 8k -P ct256</td><td>-d hx8k</td></tr>
</table>
<p>
@@ -143,7 +143,7 @@ Installing prerequisites (this command is for Ubuntu 14.04):
sudo apt-get install build-essential clang bison flex libreadline-dev \
gawk tcl-dev libffi-dev git mercurial graphviz \
xdot pkg-config python python3 libftdi-dev \
- qt5-default python3-dev libboost-dev
+ qt5-default python3-dev libboost-all-dev cmake
</pre>
<p>
diff --git a/examples/icestick/Makefile b/examples/icestick/Makefile
index 8b8e741..58f26b9 100644
--- a/examples/icestick/Makefile
+++ b/examples/icestick/Makefile
@@ -34,6 +34,10 @@ all: $(PROJ).rpt $(PROJ).bin
%_syntb.vcd: %_syntb
vvp -N $< +vcd=$@
+sim: $(PROJ)_tb.vcd
+
+postsim: $(PROJ)_syntb.vcd
+
prog: $(PROJ).bin
iceprog $<
diff --git a/examples/icestick/rs232demo.v b/examples/icestick/rs232demo.v
index 40347e8..9f66f97 100644
--- a/examples/icestick/rs232demo.v
+++ b/examples/icestick/rs232demo.v
@@ -1,17 +1,59 @@
+// A simple design demonstrating receiving and sending of RS232 signals
+//
+// With this design loaded, connect with a serial terminal to the USB serial
+// port of the icestick (with 9600 BAUD) and use the number keys 1..5 to toggle
+// the LEDs.
+
module top (
input clk,
input RX,
output TX,
+ output LED1,
+ output LED2,
+ output LED3,
+ output LED4,
+ output LED5
+);
+ parameter integer BAUD_RATE = 9600;
+ parameter integer CLOCK_FREQ_HZ = 12000000;
+ localparam integer PERIOD = CLOCK_FREQ_HZ / BAUD_RATE;
+
+ rs232_recv #(
+ .HALF_PERIOD(PERIOD / 2)
+ ) recv (
+ .clk (clk ),
+ .RX (RX ),
+ .LED1 (LED1),
+ .LED2 (LED2),
+ .LED3 (LED3),
+ .LED4 (LED4),
+ .LED5 (LED5)
+ );
+
+ rs232_send #(
+ .PERIOD(PERIOD)
+ ) send (
+ .clk (clk ),
+ .TX (TX ),
+ .LED1 (LED1),
+ .LED2 (LED2),
+ .LED3 (LED3),
+ .LED4 (LED4),
+ .LED5 (LED5)
+ );
+endmodule
+
+module rs232_recv #(
+ parameter integer HALF_PERIOD = 5
+) (
+ input clk,
+ input RX,
output reg LED1,
output reg LED2,
output reg LED3,
output reg LED4,
output reg LED5
);
- parameter integer BAUD_RATE = 9600;
- parameter integer CLOCK_FREQ_HZ = 12000000;
- localparam integer HALF_PERIOD = CLOCK_FREQ_HZ / (2 * BAUD_RATE);
-
reg [7:0] buffer;
reg buffer_valid;
@@ -20,11 +62,11 @@ module top (
reg recv = 0;
initial begin
- LED1 = 0;
+ LED1 = 1;
LED2 = 0;
- LED3 = 0;
+ LED3 = 1;
LED4 = 0;
- LED5 = 0;
+ LED5 = 1;
end
always @(posedge clk) begin
@@ -60,6 +102,72 @@ module top (
if (buffer == "5") LED5 <= !LED5;
end
end
+endmodule
+
+module rs232_send #(
+ parameter integer PERIOD = 10
+) (
+ input clk,
+ output TX,
+ input LED1,
+ input LED2,
+ input LED3,
+ input LED4,
+ input LED5
+);
+ reg [7:0] buffer;
+ reg buffer_valid;
+
+ reg [$clog2(PERIOD):0] cycle_cnt = 0;
+ reg [4:0] bit_cnt = 0;
+ reg [5:0] byte_cnt = 60;
+
+ always @(posedge clk) begin
+ cycle_cnt <= cycle_cnt + 1;
+ if (cycle_cnt == PERIOD-1) begin
+ cycle_cnt <= 0;
+ bit_cnt <= bit_cnt + 1;
+ if (bit_cnt == 10) begin
+ bit_cnt <= 0;
+ byte_cnt <= byte_cnt + 1;
+ end
+ end
+ end
+
+ reg [7:0] data_byte;
+ reg data_bit;
+
+ always @* begin
+ data_byte = 'bx;
+ case (byte_cnt)
+ 0: data_byte <= "\r";
+ 1: data_byte <= LED1 ? "*" : "-";
+ 2: data_byte <= LED2 ? "*" : "-";
+ 3: data_byte <= LED3 ? "*" : "-";
+ 4: data_byte <= LED4 ? "*" : "-";
+ 5: data_byte <= LED5 ? "*" : "-";
+ endcase
+ end
+
+ always @(posedge clk) begin
+ data_bit = 'bx;
+ case (bit_cnt)
+ 0: data_bit <= 0; // start bit
+ 1: data_bit <= data_byte[0];
+ 2: data_bit <= data_byte[1];
+ 3: data_bit <= data_byte[2];
+ 4: data_bit <= data_byte[3];
+ 5: data_bit <= data_byte[4];
+ 6: data_bit <= data_byte[5];
+ 7: data_bit <= data_byte[6];
+ 8: data_bit <= data_byte[7];
+ 9: data_bit <= 1; // stop bit
+ 10: data_bit <= 1; // stop bit
+ endcase
+ if (byte_cnt > 5) begin
+ data_bit <= 1;
+ end
+ end
- assign TX = RX;
+ assign TX = data_bit;
endmodule
diff --git a/examples/icestick/rs232demo_tb.v b/examples/icestick/rs232demo_tb.v
index 5b9aee1..fd3a0cf 100644
--- a/examples/icestick/rs232demo_tb.v
+++ b/examples/icestick/rs232demo_tb.v
@@ -53,6 +53,11 @@ module testbench;
repeat (10 * PERIOD) @(posedge clk);
+ // turn all LEDs off
+ send_byte("1");
+ send_byte("3");
+ send_byte("5");
+
// turn all LEDs on
send_byte("1");
send_byte("2");
generated by cgit v1.2.3 (git 2.25.1) at 2025-04-17 21:33:41 +0000