Files
aligned
app
arrayvec
as_slice
bare_metal
byteorder
cfg_if
cortex_m
cortex_m_rt
cstr_core
cty
druid
druid_shell
embedded_graphics
embedded_hal
generic_array
hash32
heapless
introsort
kurbo
libchip8
libm
log
memchr
mynewt
nb
num_traits
piet
piet_common
piet_embedded_graphics
r0
st7735_lcd
stable_deref_trait
typenum
unicode_segmentation
vcell
void
volatile_register
  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
//! v2 compatibility shims
//! this module adds implicit forward support to v1 digital traits

#[allow(deprecated)]
use super::v1;
use super::v2;

/// Implementation of fallible `v2::OutputPin` for `v1::OutputPin` traits
#[allow(deprecated)]
impl <T> v2::OutputPin for T 
where
    T: v1::OutputPin,
{
    // TODO: update to ! when never_type is stabilized
    type Error = ();

    fn set_low(&mut self) -> Result<(), Self::Error> {
        Ok(self.set_low())
    }

    fn set_high(&mut self) -> Result<(), Self::Error> {
         Ok(self.set_high())
     }
}

/// Implementation of fallible `v2::StatefulOutputPin` for `v1::StatefulOutputPin` digital traits
#[cfg(feature = "unproven")]
#[allow(deprecated)]
impl <T> v2::StatefulOutputPin for T
where
    T: v1::StatefulOutputPin + v1::OutputPin,
{
    fn is_set_low(&self) -> Result<bool, Self::Error> {
        Ok(self.is_set_low())
    }

     fn is_set_high(&self) -> Result<bool, Self::Error> {
         Ok(self.is_set_high())
     }
}


/// Implementation of fallible `v2::InputPin` for `v1::InputPin` digital traits
#[cfg(feature = "unproven")]
#[allow(deprecated)]
impl <T> v2::InputPin for T
where
    T: v1::InputPin
{
    // TODO: update to ! when never_type is stabilized
    type Error = ();

    fn is_low(&self) -> Result<bool, Self::Error> {
        Ok(self.is_low())
    }

     fn is_high(&self) -> Result<bool, Self::Error> {
         Ok(self.is_high())
     }
}

#[cfg(test)]
mod tests {

    #[allow(deprecated)]
    use crate::digital::v1;
    use crate::digital::v2;

    #[allow(deprecated)]
    struct OldOutputPinImpl { 
        state: bool
    }

    #[allow(deprecated)]
    impl v1::OutputPin for OldOutputPinImpl {
        fn set_low(&mut self) {
            self.state = false;
        }
        fn set_high(&mut self) {
            self.state = true;
        }
    }

    struct NewOutputPinConsumer<T: v2::OutputPin> {
        _pin: T,
    }

    impl <T>NewOutputPinConsumer<T> 
    where T: v2::OutputPin {
        pub fn new(pin: T) -> NewOutputPinConsumer<T> {
            NewOutputPinConsumer{ _pin: pin }
        }
    }

    #[test]
    fn v2_v1_output_implicit() {
        let i = OldOutputPinImpl{state: false};
        let _c = NewOutputPinConsumer::new(i);
    }

    #[test]
    fn v2_v1_output_state() {
        let mut o = OldOutputPinImpl{state: false};
        
        v2::OutputPin::set_high(&mut o).unwrap();
        assert_eq!(o.state, true);

        v2::OutputPin::set_low(&mut o).unwrap();
        assert_eq!(o.state, false);
    }

    #[cfg(feature = "unproven")]
    #[allow(deprecated)]
    struct OldInputPinImpl { 
        state: bool
    }

    #[cfg(feature = "unproven")]
    #[allow(deprecated)]
    impl v1::InputPin for OldInputPinImpl {
        fn is_low(&self) -> bool {
            !self.state
        }
        fn is_high(&self) -> bool {
            self.state
        }
    }

    #[cfg(feature = "unproven")]
    struct NewInputPinConsumer<T: v2::InputPin> {
        _pin: T,
    }

    #[cfg(feature = "unproven")]
    impl <T>NewInputPinConsumer<T> 
    where T: v2::InputPin {
        pub fn new(pin: T) -> NewInputPinConsumer<T> {
            NewInputPinConsumer{ _pin: pin }
        }
    }

    #[cfg(feature = "unproven")]
    #[test]
    fn v2_v1_input_implicit() {
        let i = OldInputPinImpl{state: false};
        let _c = NewInputPinConsumer::new(i);
    }

    #[cfg(feature = "unproven")]
    #[test]
    fn v2_v1_input_state() {
        let mut i = OldInputPinImpl{state: false};
        
        assert_eq!(v2::InputPin::is_high(&mut i).unwrap(), false);
        assert_eq!(v2::InputPin::is_low(&mut i).unwrap(), true);
    }
}