1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
import subprocess
from amaranth.build import *
from amaranth.vendor import LatticeICE40Platform
from .resources import *
__all__ = ["ICESugarPlatform"]
class ICESugarPlatform(LatticeICE40Platform):
device = "iCE40UP5K"
package = "SG48"
default_clk = "clk12"
resources = [
Resource("clk12", 0, Pins("35", dir="i"),
Clock(12e6), Attrs(GLOBAL=True, IO_STANDARD="LVCMOS33")),
*LEDResources(pins="40 41 39", invert=True, attrs=Attrs(IO_STANDARD="LVCMOS33")),
# Semantic aliases
Resource("led_r", 0, PinsN("40", dir="o"), Attrs(IO_STANDARD="LVCMOS33")),
Resource("led_g", 0, PinsN("41", dir="o"), Attrs(IO_STANDARD="LVCMOS33")),
Resource("led_b", 0, PinsN("39", dir="o"), Attrs(IO_STANDARD="LVCMOS33")),
*SwitchResources(
pins="18 19 20 21",
attrs=Attrs(IO_STANDARD="LVCMOS33")
),
UARTResource(0,
rx="4", tx="6",
attrs=Attrs(IO_STANDARD="LVTTL33", PULLUP=1)
),
*SPIFlashResources(0,
cs_n="16", clk="15", copi="14", cipo="17", wp_n="12", hold_n="13",
attrs=Attrs(IO_STANDARD="LVCMOS33")
),
Resource("usb", 0,
Subsignal("d_p", Pins("10", dir="io")),
Subsignal("d_n", Pins("9", dir="io")),
Subsignal("pullup", Pins("11", dir="o")),
Attrs(IO_STANDARD="LVCMOS33")
),
]
connectors = [
Connector("pmod", 0, "10 6 3 48 - - 9 4 2 47 - -"), # PMOD1 - IO pins shared by USB
Connector("pmod", 1, "46 44 42 37 - - 45 43 38 36 - -"), # PMOD2
Connector("pmod", 2, "34 31 27 25 - - 32 28 26 23 - -"), # PMOD3
Connector("pmod", 3, "21 20 19 18 - - - - - - - -"), # PMOD4 - IO pins used for switches via jumpers
]
def toolchain_program(self, products, name):
with products.extract("{}.bin".format(name)) as bitstream_filename:
subprocess.check_call(["icesprog", bitstream_filename])
if __name__ == "__main__":
from .test.blinky import *
ICESugarPlatform().build(Blinky(), do_program=True)
|
