esp-hal 1.2.0

Bare-metal HAL for Espressif devices
Documentation 
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

//! D+ / D- pin configuration for full-speed USB OTG.

use crate::{gpio::Pin, peripherals::IO_MUX};

/// USB D+ pin for full-speed OTG.
pub trait UsbFsDp: crate::private::Sealed {
    #[doc(hidden)]
    fn configure(&self);
}

/// USB D- pin for full-speed OTG.
pub trait UsbFsDm: crate::private::Sealed {
    #[doc(hidden)]
    fn configure(&self);
}

fn set_high_drive(pin: &impl Pin) {
    IO_MUX::regs()
        .gpio(pin.number() as usize)
        .modify(|_, w| unsafe { w.fun_drv().bits(3) });
}

for_each_analog_function! {
    (USB_FS_DM, $gpio:ident) => {
        impl UsbFsDm for crate::peripherals::$gpio<'_> {
            fn configure(&self) {
                set_high_drive(self);
            }
        }
    };
    (USB_FS_DP, $gpio:ident) => {
        impl UsbFsDp for crate::peripherals::$gpio<'_> {
            fn configure(&self) {
                set_high_drive(self);
            }
        }
    };
}