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
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
|
import os
import subprocess
import shutil
from nmigen.build import *
from nmigen.vendor.lattice_ecp5 import *
from .resources import *
__all__ = ["OrangeCrabR0_1Platform"]
class OrangeCrabR0_1Platform(LatticeECP5Platform):
device = "LFE5U-25F"
package = "MG285"
speed = "8"
default_clk = "clk"
resources = [
Resource("clk", 0, Pins("A9", dir="i"),
Clock(48e6), Attrs(IO_TYPE="LVCMOS33")),
# Used to reload FPGA configuration.
# Can enter USB bootloader by assigning button 0 to program.
Resource("program", 0, PinsN("R16", dir="o"), Attrs(IO_TYPE="LVCMOS33")),
RGBLEDResource(0,
r="V17", g="T17", b="J3", invert=True,
attrs=Attrs(IO_TYPE="LVCMOS33")),
*SPIFlashResources(0,
cs_n="U17", clk="U16", cipo="T18", copi="U18", wp_n="R18", hold_n="N18",
attrs=Attrs(IO_TYPE="LVCMOS33"),
),
Resource("ddr3", 0,
Subsignal("rst", PinsN("B1", dir="o")),
Subsignal("clk", DiffPairs("J18", "K18", dir="o"), Attrs(IO_TYPE="SSTL135D_I")),
Subsignal("clk_en", Pins("D6", dir="o")),
Subsignal("cs", PinsN("A12", dir="o")),
Subsignal("we", PinsN("B12", dir="o")),
Subsignal("ras", PinsN("C12", dir="o")),
Subsignal("cas", PinsN("D13", dir="o")),
Subsignal("a", Pins("A4 D2 C3 C7 D3 D4 D1 B2 C1 A2 A7 C2 C4", dir="o")),
Subsignal("ba", Pins("B6 B7 A6", dir="o")),
Subsignal("dqs", DiffPairs("G18 H17", "B15 A16", dir="io"),
Attrs(IO_TYPE="SSTL135D_I", TERMINATION="OFF",
DIFFRESISTOR="100")),
Subsignal("dq", Pins("F17 F16 G15 F15 J16 C18 H16 F18 C17 D15 B17 C16 A15 B13 A17 A13", dir="io"),
Attrs(TERMINATION="75")),
Subsignal("dm", Pins("G16 D16", dir="o")),
Subsignal("odt", Pins("C13", dir="o")),
Attrs(IO_TYPE="SSTL135_I", SLEWRATE="FAST")
),
Resource("ddr3_pseudo_power", 0,
# pseudo power pins, leave these at their default value
Subsignal("vcc_virtual", PinsN("A3 B18 C6 C15 D17 D18 K15 K16 K17", dir="o")),
Subsignal("gnd_virtual", Pins("L15 L16 L18", dir="o")),
Attrs(IO_TYPE="SSTL135_II", SLEWRATE="FAST")
),
*SDCardResources(0,
dat0="J1", dat1="K3", dat2="L3", dat3="M1", clk="K1", cmd="K2", cd="L1",
attrs=Attrs(IO_TYPE="LVCMOS33", SLEWRATE="FAST")
),
DirectUSBResource(0, d_p="N1", d_n="M2", pullup="N2", attrs=Attrs(IO_TYPE="LVCMOS33"))
]
connectors = [
Connector("io", 0, {
"0": "N17",
"1": "M18",
"5": "B10",
"6": "B9",
"9": "C8",
"10": "B8",
"11": "A8",
"12": "H2",
"13": "J2",
"cipo": "N15",
"copi": "N16",
"sck": "R17",
"scl": "C9",
"sda": "C10"
}),
Connector("mcu", 0, {
"0": "A10",
"1": "C11",
"2": "A11",
"3": "B11",
}),
]
@property
def required_tools(self):
return super().required_tools + [
"dfu-suffix"
]
@property
def command_templates(self):
return super().command_templates + [
r"""
{{invoke_tool("dfu-suffix")}}
-v 1209 -p 5af0 -a {{name}}.bit
"""
]
def toolchain_prepare(self, fragment, name, **kwargs):
overrides = dict(ecppack_opts="--compress --freq 38.8")
overrides.update(kwargs)
return super().toolchain_prepare(fragment, name, **overrides)
def toolchain_program(self, products, name):
dfu_util = os.environ.get("DFU_UTIL", "dfu-util")
with products.extract("{}.bit".format(name)) as bitstream_filename:
subprocess.check_call([dfu_util, "-D", bitstream_filename])
if __name__ == "__main__":
from .test.blinky import *
OrangeCrabR0_1Platform().build(Blinky(), do_program=True)
|
