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
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
use core::marker;
#[doc = " Raw register type"]
pub trait RegisterSpec {
    #[doc = " Raw register type (`u8`, `u16`, `u32`, ...)."]
    type Ux: Copy;
}
#[doc = " Trait implemented by readable registers to enable the `read` method."]
#[doc = ""]
#[doc = " Registers marked with `Writable` can be also `modify`'ed."]
pub trait Readable: RegisterSpec {
    #[doc = " Result from a call to `read` and argument to `modify`."]
    type Reader: core::convert::From<R<Self>> + core::ops::Deref<Target = R<Self>>;
}
#[doc = " Trait implemented by writeable registers."]
#[doc = ""]
#[doc = " This enables the  `write`, `write_with_zero` and `reset` methods."]
#[doc = ""]
#[doc = " Registers marked with `Readable` can be also `modify`'ed."]
pub trait Writable: RegisterSpec {
    #[doc = " Writer type argument to `write`, et al."]
    type Writer: core::convert::From<W<Self>> + core::ops::DerefMut<Target = W<Self>>;
}
#[doc = " Reset value of the register."]
#[doc = ""]
#[doc = " This value is the initial value for the `write` method. It can also be directly written to the"]
#[doc = " register by using the `reset` method."]
pub trait Resettable: RegisterSpec {
    #[doc = " Reset value of the register."]
    fn reset_value() -> Self::Ux;
}
#[doc = " This structure provides volatile access to registers."]
pub struct Reg<REG: RegisterSpec> {
    register: vcell::VolatileCell<REG::Ux>,
    _marker: marker::PhantomData<REG>,
}
unsafe impl<REG: RegisterSpec> Send for Reg<REG> where REG::Ux: Send {}
impl<REG: RegisterSpec> Reg<REG> {
    #[doc = " Returns the underlying memory address of register."]
    #[doc = ""]
    #[doc = " ```ignore"]
    #[doc = " let reg_ptr = periph.reg.as_ptr();"]
    #[doc = " ```"]
    #[inline(always)]
    pub fn as_ptr(&self) -> *mut REG::Ux {
        self.register.as_ptr()
    }
}
impl<REG: Readable> Reg<REG> {
    #[doc = " Reads the contents of a `Readable` register."]
    #[doc = ""]
    #[doc = " You can read the raw contents of a register by using `bits`:"]
    #[doc = " ```ignore"]
    #[doc = " let bits = periph.reg.read().bits();"]
    #[doc = " ```"]
    #[doc = " or get the content of a particular field of a register:"]
    #[doc = " ```ignore"]
    #[doc = " let reader = periph.reg.read();"]
    #[doc = " let bits = reader.field1().bits();"]
    #[doc = " let flag = reader.field2().bit_is_set();"]
    #[doc = " ```"]
    #[inline(always)]
    pub fn read(&self) -> REG::Reader {
        REG::Reader::from(R {
            bits: self.register.get(),
            _reg: marker::PhantomData,
        })
    }
}
impl<REG: Resettable + Writable> Reg<REG> {
    #[doc = " Writes the reset value to `Writable` register."]
    #[doc = ""]
    #[doc = " Resets the register to its initial state."]
    #[inline(always)]
    pub fn reset(&self) {
        self.register.set(REG::reset_value())
    }
    #[doc = " Writes bits to a `Writable` register."]
    #[doc = ""]
    #[doc = " You can write raw bits into a register:"]
    #[doc = " ```ignore"]
    #[doc = " periph.reg.write(|w| unsafe { w.bits(rawbits) });"]
    #[doc = " ```"]
    #[doc = " or write only the fields you need:"]
    #[doc = " ```ignore"]
    #[doc = " periph.reg.write(|w| w"]
    #[doc = "     .field1().bits(newfield1bits)"]
    #[doc = "     .field2().set_bit()"]
    #[doc = "     .field3().variant(VARIANT)"]
    #[doc = " );"]
    #[doc = " ```"]
    #[doc = " In the latter case, other fields will be set to their reset value."]
    #[inline(always)]
    pub fn write<F>(&self, f: F)
    where
        F: FnOnce(&mut REG::Writer) -> &mut W<REG>,
    {
        self.register.set(
            f(&mut REG::Writer::from(W {
                bits: REG::reset_value(),
                _reg: marker::PhantomData,
            }))
            .bits,
        );
    }
}
impl<REG: Writable> Reg<REG>
where
    REG::Ux: Default,
{
    #[doc = " Writes 0 to a `Writable` register."]
    #[doc = ""]
    #[doc = " Similar to `write`, but unused bits will contain 0."]
    #[inline(always)]
    pub fn write_with_zero<F>(&self, f: F)
    where
        F: FnOnce(&mut REG::Writer) -> &mut W<REG>,
    {
        self.register.set(
            (*f(&mut REG::Writer::from(W {
                bits: REG::Ux::default(),
                _reg: marker::PhantomData,
            })))
            .bits,
        );
    }
}
impl<REG: Readable + Writable> Reg<REG> {
    #[doc = " Modifies the contents of the register by reading and then writing it."]
    #[doc = ""]
    #[doc = " E.g. to do a read-modify-write sequence to change parts of a register:"]
    #[doc = " ```ignore"]
    #[doc = " periph.reg.modify(|r, w| unsafe { w.bits("]
    #[doc = "    r.bits() | 3"]
    #[doc = " ) });"]
    #[doc = " ```"]
    #[doc = " or"]
    #[doc = " ```ignore"]
    #[doc = " periph.reg.modify(|_, w| w"]
    #[doc = "     .field1().bits(newfield1bits)"]
    #[doc = "     .field2().set_bit()"]
    #[doc = "     .field3().variant(VARIANT)"]
    #[doc = " );"]
    #[doc = " ```"]
    #[doc = " Other fields will have the value they had before the call to `modify`."]
    #[inline(always)]
    pub fn modify<F>(&self, f: F)
    where
        for<'w> F: FnOnce(&REG::Reader, &'w mut REG::Writer) -> &'w mut W<REG>,
    {
        let bits = self.register.get();
        self.register.set(
            f(
                &REG::Reader::from(R {
                    bits,
                    _reg: marker::PhantomData,
                }),
                &mut REG::Writer::from(W {
                    bits,
                    _reg: marker::PhantomData,
                }),
            )
            .bits,
        );
    }
}
#[doc = " Register reader."]
#[doc = ""]
#[doc = " Result of the `read` methods of registers. Also used as a closure argument in the `modify`"]
#[doc = " method."]
pub struct R<REG: RegisterSpec + ?Sized> {
    pub(crate) bits: REG::Ux,
    _reg: marker::PhantomData<REG>,
}
impl<REG: RegisterSpec> R<REG> {
    #[doc = " Reads raw bits from register."]
    #[inline(always)]
    pub fn bits(&self) -> REG::Ux {
        self.bits
    }
}
impl<REG: RegisterSpec, FI> PartialEq<FI> for R<REG>
where
    REG::Ux: PartialEq,
    FI: Copy + Into<REG::Ux>,
{
    #[inline(always)]
    fn eq(&self, other: &FI) -> bool {
        self.bits.eq(&(*other).into())
    }
}
#[doc = " Register writer."]
#[doc = ""]
#[doc = " Used as an argument to the closures in the `write` and `modify` methods of the register."]
pub struct W<REG: RegisterSpec + ?Sized> {
    #[doc = "Writable bits"]
    pub(crate) bits: REG::Ux,
    _reg: marker::PhantomData<REG>,
}
impl<REG: RegisterSpec> W<REG> {
    #[doc = " Writes raw bits to the register."]
    #[inline(always)]
    pub unsafe fn bits(&mut self, bits: REG::Ux) -> &mut Self {
        self.bits = bits;
        self
    }
}
#[doc = " Used if enumerated values cover not the whole range."]
#[derive(Clone, Copy, PartialEq)]
pub enum Variant<U, T> {
    #[doc = " Expected variant."]
    Val(T),
    #[doc = " Raw bits."]
    Res(U),
}
#[doc = " Field reader."]
#[doc = ""]
#[doc = " Result of the `read` methods of fields."]
pub struct FieldReader<U, T> {
    pub(crate) bits: U,
    _reg: marker::PhantomData<T>,
}
impl<U, T> FieldReader<U, T>
where
    U: Copy,
{
    #[doc = " Creates a new instance of the reader."]
    #[allow(unused)]
    #[inline(always)]
    pub(crate) fn new(bits: U) -> Self {
        Self {
            bits,
            _reg: marker::PhantomData,
        }
    }
    #[doc = " Reads raw bits from field."]
    #[inline(always)]
    pub fn bits(&self) -> U {
        self.bits
    }
}
impl<U, T, FI> PartialEq<FI> for FieldReader<U, T>
where
    U: PartialEq,
    FI: Copy + Into<U>,
{
    #[inline(always)]
    fn eq(&self, other: &FI) -> bool {
        self.bits.eq(&(*other).into())
    }
}
impl<FI> FieldReader<bool, FI> {
    #[doc = " Value of the field as raw bits."]
    #[inline(always)]
    pub fn bit(&self) -> bool {
        self.bits
    }
    #[doc = " Returns `true` if the bit is clear (0)."]
    #[inline(always)]
    pub fn bit_is_clear(&self) -> bool {
        !self.bit()
    }
    #[doc = " Returns `true` if the bit is set (1)."]
    #[inline(always)]
    pub fn bit_is_set(&self) -> bool {
        self.bit()
    }
}