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
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214

use gpio::{self, IntoFunction, Port};

/// The PadPin trait makes it more ergonomic to convert a
/// pin into a Sercom pad.  You should not implement this
/// trait for yourself; only the implementations in the
/// sercom module make sense.
pub trait PadPin<T> {
    fn into_pad(self, port: &mut Port) -> T;
}

/// The pad macro helps to define enums for pads and makes it
/// a little more convenient to initialize them.
macro_rules! pad {
    ($(pub enum $PadType:ident {
        $( $PinType:ident ($new:ident, $Pf:ident),)+
    })+
    ) => {
$(
/// Represents a numbered pad for the associated sercom instance
pub enum $PadType {
    $(
        $PinType(gpio::$PinType<gpio::$Pf>),
    )+
}

impl $PadType {
    $(
    /// Construct pad from the appropriate pin in any mode.
    /// You may find it more convenient to use the `into_pad` trait
    /// and avoid referencing the pad type.
    pub fn $new<MODE>(pin: gpio::$PinType<MODE>, port: &mut Port) -> Self {
        $PadType::$PinType(pin.into_function(port))
    }

    )+
}

$(
impl<MODE> PadPin<$PadType> for gpio::$PinType<MODE> {
    fn into_pad(self, port: &mut Port) -> $PadType {
        $PadType::$new(self, port)
    }
}
)+

)+
    };
}

pad!(
    // sercom0[0]:  PA04:D   PA08:C
    // sercom0[1]:  PA05:D   PA09:C
    // sercom0[2]:  PA06:D   PA10:C
    // sercom0[3]:  PA07:D   PA11:C

    pub enum Sercom0Pad0 {
        Pa4(pa4, PfD),
        Pa8(pa8, PfC),
    }

    pub enum Sercom0Pad1 {
        Pa5(pa5, PfD),
        Pa9(pa9, PfC),
    }

    pub enum Sercom0Pad2 {
        Pa6(pa6, PfD),
        Pa10(pa10, PfC),
    }

    pub enum Sercom0Pad3 {
        Pa7(pa7, PfD),
        Pa11(pa11, PfC),
    }

    // sercom1[0]:  PA16:C   PA00:D
    // sercom1[1]:  PA17:C   PA01:D
    // sercom1[2]:  PA18:C   PA30:D
    // sercom1[3]:  PA19:C   PA31:D

    pub enum Sercom1Pad0 {
        Pa0(pa0, PfD),
        Pa16(pa16, PfC),
    }

    pub enum Sercom1Pad1 {
        Pa1(pa1, PfD),
        Pa17(pa17, PfC),
    }

    pub enum Sercom1Pad2 {
        Pa18(pa18, PfC),
        Pa30(pa30, PfD),
    }

    pub enum Sercom1Pad3 {
        Pa19(pa19, PfC),
        Pa31(pa31, PfD),
    }

    // sercom2[0]:  PA12:C   PA08:D
    // sercom2[1]:  PA13:C   PA09:D
    // sercom2[2]:  PA14:C   PA10:D
    // sercom2[3]:  PA15:C   PA11:D

    pub enum Sercom2Pad0 {
        Pa8(pa8, PfD),
        Pa12(pa12, PfC),
    }

    pub enum Sercom2Pad1 {
        Pa9(pa9, PfD),
        Pa13(pa13, PfC),
    }

    pub enum Sercom2Pad2 {
        Pa10(pa10, PfD),
        Pa14(pa14, PfC),
    }

    pub enum Sercom2Pad3 {
        Pa11(pa11, PfD),
        Pa15(pa15, PfC),
    }

    // sercom3[0]:  PA16:D   PA22:C
    // sercom3[1]:  PA17:D   PA23:C
    // sercom3[2]:  PA18:D   PA24:C   PA20:D
    // sercom3[3]:  PA19:D   PA25:C   PA21:D

    pub enum Sercom3Pad0 {
        Pa16(pa16, PfD),
        Pa22(pa22, PfC),
    }
    pub enum Sercom3Pad1 {
        Pa17(pa17, PfD),
        Pa23(pa23, PfC),
    }
    pub enum Sercom3Pad2 {
        Pa18(pa18, PfD),
        Pa20(pa20, PfD),
        Pa24(pa24, PfC),
    }
    pub enum Sercom3Pad3 {
        Pa19(pa19, PfD),
        Pa21(pa21, PfD),
        Pa25(pa25, PfC),
    }
);

#[cfg(feature = "samd21g18a")]
pad!(
    // sercom4[0]:  PA12:D   PB08:D   PB12:C
    // sercom4[1]:  PA13:D   PB09:D   PB13:C
    // sercom4[2]:  PA14:D   PB10:D   PB14:C
    // sercom4[3]:  PA15:D   PB11:D   PB15:C

    pub enum Sercom4Pad0 {
        Pa12(pa12, PfD),
        Pb8(pb8, PfD),
        Pb12(pb12, PfC),
    }

    pub enum Sercom4Pad1 {
        Pa13(pa13, PfD),
        Pb9(pb9, PfD),
        Pb13(pb13, PfC),
    }

    pub enum Sercom4Pad2 {
        Pa14(pa14, PfD),
        Pb10(pb10, PfD),
        Pb14(pb14, PfC),
    }

    pub enum Sercom4Pad3 {
        Pa15(pa15, PfD),
        Pb11(pb11, PfD),
        Pb15(pb15, PfC),
    }

    // sercom5[0]:  PA22:D   PB02:D   PB16:C  PB30:D
    // sercom5[1]:  PA23:D   PB03:D   PB17:C  PB31:D
    // sercom5[2]:  PA24:D   PB00:D   PA20:C  PB22:D
    // sercom5[3]:  PA25:D   PB01:D   PA21:C  PB23:D

    pub enum Sercom5Pad0 {
        Pa22(pa22, PfD),
        Pb2(pb2, PfD),
        Pb16(pb16, PfC),
        Pb30(pb30, PfD),
    }

    pub enum Sercom5Pad1 {
        Pa23(pa23, PfD),
        Pb3(pb3, PfD),
        Pb17(pb17, PfC),
        Pb31(pb31, PfD),
    }

    pub enum Sercom5Pad2 {
        Pa24(pa24, PfD),
        Pb0(pb0, PfD),
        Pa20(pa20, PfC),
        Pb22(pb22, PfD),
    }

    pub enum Sercom5Pad3 {
        Pa25(pa25, PfD),
        Pb1(pb1, PfD),
        Pa21(pa21, PfC),
        Pb23(pb23, PfD),
    }
);