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

//! This is an internal module that contains utility functionality used by other modules.

// For some reason, we can't import the `paste` and `cfg_if` macros here and use them
// in `apb_en_reset`.

/// Enables and resets peripheral clocks that could be on either APB1 or APB2.
/// The first argument is a `1` or `2` to specify the APB. The second is something like `tim1`,
/// and the third is a `pac::RCC`.
#[macro_export]
macro_rules! rcc_en_reset {
    (1, $periph:expr, $rcc:expr) => {
        paste::paste! { cfg_if::cfg_if! {
            if #[cfg(any(feature = "f3", feature = "f4"))] {
                $rcc.apb1enr.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.apb1rstr.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.apb1rstr.modify(|_, w| w.[<$periph rst>]().clear_bit());
            } else if #[cfg(any(feature = "l4", feature = "l5", feature = "g4"))] {
                $rcc.apb1enr1.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.apb1rstr1.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.apb1rstr1.modify(|_, w| w.[<$periph rst>]().clear_bit());
            } else if #[cfg(feature = "g0")] {
                $rcc.apbenr1.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.apbrstr1.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.apbrstr1.modify(|_, w| w.[<$periph rst>]().clear_bit());
            } else {  // H7
                $rcc.apb1lenr.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.apb1lrstr.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.apb1lrstr.modify(|_, w| w.[<$periph rst>]().clear_bit());
            }
        }}
    };
    (2, $periph:expr, $rcc:expr) => {
        paste::paste! { cfg_if::cfg_if! {
            if #[cfg(feature = "g0")] {
                $rcc.apbenr2.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.apbrstr2.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.apbrstr2.modify(|_, w| w.[<$periph rst>]().clear_bit());
            } else {
                $rcc.apb2enr.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.apb2rstr.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.apb2rstr.modify(|_, w| w.[<$periph rst>]().clear_bit());
            }
        }}
    };
    (ahb1, $periph:expr, $rcc:expr) => {
        paste::paste! { cfg_if::cfg_if! {
            if #[cfg(feature = "f3")] {
                $rcc.ahbenr.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.ahbrstr.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.ahbrstr.modify(|_, w| w.[<$periph rst>]().clear_bit());
            } else {
                $rcc.ahb1enr.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.ahb1rstr.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.ahb1rstr.modify(|_, w| w.[<$periph rst>]().clear_bit());
            }
        }}
    };
    (ahb2, $periph:expr, $rcc:expr) => {
        paste::paste! { cfg_if::cfg_if! {
            if #[cfg(feature = "placeholder")] {
            } else {
                $rcc.ahb2enr.modify(|_, w| w.[<$periph en>]().set_bit());
                $rcc.ahb2rstr.modify(|_, w| w.[<$periph rst>]().set_bit());
                $rcc.ahb2rstr.modify(|_, w| w.[<$periph rst>]().clear_bit());
            }
        }}
    };
}