embassy_stm32_plus/builder/uart/uart3/
mod.rs

1use embassy_stm32::{bind_interrupts, Peripheral, usart};
2use embassy_stm32::mode::Async;
3use embassy_stm32::peripherals::{DMA1_CH2, DMA1_CH3, USART3};
4use embassy_stm32::usart::{Config, ConfigError, RtsPin, RxPin, TxPin, Uart};
5use crate::builder::uart::base::UartBase;
6use crate::builder::uart::uart3::rx::{Uart3Rts, Uart3Rx, Uart3RxBuilder};
7use crate::builder::uart::uart3::tx::{Uart3Cts, Uart3Tx};
8
9pub mod rx;
10pub mod tx;
11
12bind_interrupts!(struct Irqs {
13    USART3 => usart::InterruptHandler<USART3>;
14});
15
16/// uart3 builder
17pub struct Uart3Builder {
18    /// uart3 base data
19    pub base: UartBase<USART3>,
20    /// uart2 tx pin
21    pub tx: Uart3Tx,
22    /// uart2 rx pin
23    pub rx: Uart3Rx,
24    /// use rts cts
25    pub rts_cts: Option<(Uart3Rts, Uart3Cts)>,
26}
27
28/// custom method
29impl Uart3Builder {
30    /// create builder
31    #[inline]
32    pub fn new(uart: USART3, tx: Uart3Tx, rx: Uart3Rx) -> Self {
33        Self { base: UartBase::new(uart), tx, rx, rts_cts: None }
34    }
35
36    /// set uart config
37    #[inline]
38    pub fn config(mut self, config: Config) -> Self {
39        self.base.set_config(config);
40        self
41    }
42
43    /// set rts cts
44    #[inline]
45    pub fn rts_cts(mut self, rts: Uart3Rts, cts: Uart3Cts) -> Self {
46        self.rts_cts = Some((rts, cts));
47        self
48    }
49
50    /// build a serial port that supports read and write data
51    pub fn build(self, tx_dma: DMA1_CH2, rx_dma: DMA1_CH3) -> Result<Uart<'static, Async>, ConfigError> {
52        let rx = Uart3RxBuilder { base: self.base, rx: self.rx, rts: None };
53        match self.tx {
54            Uart3Tx::PB10(pb10) => { Self::build_rx(pb10, rx, tx_dma, rx_dma, self.rts_cts) }
55            #[cfg(PC10)]
56            Uart3Tx::PC10(pc10) => { Self::build_rx(pc10, rx, tx_dma, rx_dma, self.rts_cts) }
57            #[cfg(PD8)]
58            Uart3Tx::PD8(pd8) => { Self::build_rx(pd8, rx, tx_dma, rx_dma, self.rts_cts) }
59        }
60    }
61
62    /// build by rx
63    fn build_rx(
64        tx: impl Peripheral<P=impl TxPin<USART3>> + 'static,
65        rx: Uart3RxBuilder,
66        tx_dma: DMA1_CH2,
67        rx_dma: DMA1_CH3,
68        rts_cts: Option<(Uart3Rts, Uart3Cts)>)
69        -> Result<Uart<'static, Async>, ConfigError> {
70        match rx.rx {
71            Uart3Rx::PB11(pb11) => { Self::build_rts(tx, pb11, rx.base, tx_dma, rx_dma, rts_cts) }
72            #[cfg(PC11)]
73            Uart3Rx::PC11(pc11) => { Self::build_rts(tx, pc11, rx.base, tx_dma, rx_dma, rts_cts) }
74            #[cfg(PD9)]
75            Uart3Rx::PD9(pd9) => { Self::build_rts(tx, pd9, rx.base, tx_dma, rx_dma, rts_cts) }
76        }
77    }
78
79    /// build by rts
80    fn build_rts(
81        tx: impl Peripheral<P=impl TxPin<USART3>> + 'static,
82        rx: impl Peripheral<P=impl RxPin<USART3>> + 'static,
83        base: UartBase<USART3>,
84        tx_dma: DMA1_CH2,
85        rx_dma: DMA1_CH3,
86        rts_cts: Option<(Uart3Rts, Uart3Cts)>)
87        -> Result<Uart<'static, Async>, ConfigError> {
88        let (rts, cts) = crate::match_some_return!(rts_cts,
89            Uart::new(base.uart, rx, tx, Irqs, tx_dma, rx_dma, base.config.unwrap_or_default()));
90
91        match rts {
92            Uart3Rts::PB14(pb14) => { Self::build_cts(tx, rx, base, tx_dma, rx_dma, pb14, cts) }
93            #[cfg(PD12)]
94            Uart3Rts::PD12(pd12) => { Self::build_cts(tx, rx, base, tx_dma, rx_dma, pd12, cts) }
95        }
96    }
97
98    /// build by cts
99    fn build_cts(
100        tx: impl Peripheral<P=impl TxPin<USART3>> + 'static,
101        rx: impl Peripheral<P=impl RxPin<USART3>> + 'static,
102        base: UartBase<USART3>,
103        tx_dma: DMA1_CH2,
104        rx_dma: DMA1_CH3,
105        rts: impl Peripheral<P=impl RtsPin<USART3>> + 'static,
106        cts: Uart3Cts)
107        -> Result<Uart<'static, Async>, ConfigError> {
108        match cts {
109            Uart3Cts::PB13(pb13) => {
110                Uart::new_with_rtscts(base.uart, rx, tx, Irqs, rts, pb13, tx_dma, rx_dma, base.config.unwrap_or_default())
111            }
112            #[cfg(PD11)]
113            Uart3Cts::PD11(pd11) => {
114                Uart::new_with_rtscts(base.uart, rx, tx, Irqs, rts, pd11, tx_dma, rx_dma, base.config.unwrap_or_default())
115            }
116        }
117    }
118}
embassy_stm32_plus/builder/uart/uart3/mod.rs

embassy_stm32_plus/builder/uart/uart3/
mod.rs
