3 """ define functions here, with their pin names and the pin type.
5 each function returns a pair of lists
6 (or objects with a __getitem__ function)
8 the first list (or object) contains pin name plus type specifications.
12 * "-" for an input pin,
13 * "+" for an output pin,
14 * "*" for an in/out pin
16 each function is then added to the pinspec tuple, below, as a ("NAME",
19 different functions may be added multiple times under the same NAME,
20 so that complex (or large) functions can be split into one or more
21 groups (and placed on different pinbanks).
23 eint, pwm and gpio are slightly odd in that instead of a fixed list
24 an object is returned with a __getitem__ function that accepts a
25 slice object. in this way the actual generation of the pin name
26 is delayed until it is known precisely how many pins are to be
27 generated, and that's not known immediately (or it would be if
28 every single one of the functions below had a start and end parameter
29 added). see spec.interfaces.PinGen class slice on pingroup
31 the second list is the names of pins that are part of an inout bus.
32 this list of pins (a ganged group) will need to be changed under
33 the control of the function, as a group. for example: sdmmc's
34 D0-D3 pins are in-out, they all change from input to output at
35 the same time under the control of the function, therefore there's
36 no point having multiple in-out switch/control wires, as the
37 sdmmc is never going to do anything other than switch this entire
38 bank all at once. so in this particular example, sdmmc returns:
40 (['CMD+', 'CLK+', 'D0*', 'D1*', 'D2*', 'D3*'] # pin names
41 ['D0*', 'D1*', 'D2*', 'D3*']) # ganged bus names
45 def i2s(suffix
, bank
):
46 return (['MCK+', 'BCK+', 'LRCK+', 'DI-', 'DO+'],
50 def emmc(suffix
, bank
, pincount
=8):
51 emmcpins
= ['CMD+', 'CLK+']
53 for i
in range(pincount
):
55 emmcpins
.append(pname
)
57 return (emmcpins
, inout
)
60 def sdmmc(suffix
, bank
):
61 return emmc(suffix
, bank
, pincount
=4)
64 def nspi(suffix
, bank
, iosize
, masteronly
=True):
66 qpins
= ['CK+', 'NSS+']
68 qpins
= ['CK*', 'NSS*']
70 for i
in range(iosize
):
77 def mspi(suffix
, bank
):
78 return nspi(suffix
, bank
, 2, masteronly
=True)
81 def mquadspi(suffix
, bank
):
82 return nspi(suffix
, bank
, 4, masteronly
=True)
85 def spi(suffix
, bank
):
86 return nspi(suffix
, bank
, 2)
89 def quadspi(suffix
, bank
):
90 return nspi(suffix
, bank
, 4)
93 def i2c(suffix
, bank
):
94 return (['SDA*', 'SCL*'], [])
97 def jtag(suffix
, bank
):
98 return (['TMS-', 'TDI-', 'TDO+', 'TCK+'], [])
101 def uart(suffix
, bank
):
102 return (['TX+', 'RX-'], [])
105 def ulpi(suffix
, bank
):
106 ulpipins
= ['CK+', 'DIR+', 'STP+', 'NXT+']
108 ulpipins
.append('D%d*' % i
)
109 return (ulpipins
, [])
112 def uartfull(suffix
, bank
):
113 return (['TX+', 'RX-', 'CTS-', 'RTS+'],
117 def rgbttl(suffix
, bank
):
118 ttlpins
= ['CK+', 'DE+', 'HS+', 'VS+']
120 ttlpins
.append("OUT%d+" % i
)
124 def rgmii(suffix
, bank
):
127 buspins
.append("ERXD%d-" % i
)
129 buspins
.append("ETXD%d+" % i
)
130 buspins
+= ['ERXCK-', 'ERXERR-', 'ERXDV-',
132 'ETXEN+', 'ETXCK+', 'ECRS-',
137 def flexbus1(suffix
, bank
):
142 buspins
.append(pname
)
145 buspins
.append("CS%d+" % i
)
146 buspins
+= ['ALE+', 'OE+', 'RW+', 'TA-',
147 # 'TS+', commented out for now, mirrors ALE, for mux'd mode
151 buspins
.append("BWE%d+" % i
)
152 for i
in range(2, 6):
153 buspins
.append("CS%d+" % i
)
154 return (buspins
, inout
)
157 def flexbus2(suffix
, bank
):
159 for i
in range(8, 32):
160 buspins
.append("AD%d*" % i
)
161 return (buspins
, buspins
)
164 def sdram1(suffix
, bank
):
168 pname
= "SDRDQM%d*" % i
169 buspins
.append(pname
)
172 buspins
.append("SDRAD%d+" % i
)
174 buspins
.append("SDRDQ%d+" % i
)
176 buspins
.append("SDRCS%d#+" % i
)
178 buspins
.append("SDRDQ%d+" % i
)
180 buspins
.append("SDRBA%d+" % i
)
181 buspins
+= ['SDRCKE+', 'SDRRAS#+', 'SDRCAS#+', 'SDRWE#+',
183 return (buspins
, inout
)
186 def sdram2(suffix
, bank
):
189 for i
in range(3, 6):
190 buspins
.append("SDRCS%d#+" % i
)
191 for i
in range(16, 32):
192 pname
= "SDRDQM%d*" % i
193 buspins
.append(pname
)
195 return (buspins
, inout
)
198 def mcu8080(suffix
, bank
):
202 pname
= "MCUD%d*" % i
203 buspins
.append(pname
)
206 buspins
.append("MCUAD%d+" % (i
+ 8))
208 buspins
.append("MCUCS%d+" % i
)
210 buspins
.append("MCUNRB%d+" % i
)
211 buspins
+= ['MCUCD+', 'MCURD+', 'MCUWR+', 'MCUCLE+', 'MCUALE+',
213 return (buspins
, inout
)
216 class RangePin(object):
217 def __init__(self
, suffix
, prefix
=None):
219 self
.prefix
= prefix
or ''
221 def __getitem__(self
, s
):
223 for idx
in range(s
.start
or 0, s
.stop
or -1, s
.step
or 1):
224 res
.append("%s%d%s" % (self
.prefix
, idx
, self
.suffix
))
228 def eint(suffix
, bank
):
229 return (RangePin("-"), [])
232 def pwm(suffix
, bank
):
233 return (RangePin("+"), [])
236 def gpio(suffix
, bank
):
237 return (("GPIO%s" % bank
, RangePin(prefix
=bank
, suffix
="*")), [])
240 # list functions by name here
242 pinspec
= (('IIS', i2s
),