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add register_at! macro

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Astro 2019-05-20 23:01:50 +02:00
parent 7e12468bf2
commit 351d18c10f
3 changed files with 18 additions and 27 deletions
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12
src/regs.rs
View File

@ -163,3 +163,15 @@ macro_rules! register_bits {
}
);
}
#[macro_export]
macro_rules! register_at {
($name: ident, $addr: expr, $ctor: ident) => (
impl $name {
pub fn $ctor() -> &'static mut Self {
let addr = $addr as *mut Self;
unsafe { &mut *addr }
}
}
)
}

16
src/slcr.rs
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@ -1,6 +1,6 @@
#[allow(unused)]
use crate::{register, register_bit, register_bits, regs::RegisterRW};
use crate::{register, register_bit, register_bits, register_at, regs::RegisterW, regs::RegisterRW};
pub enum PllSource {
IoPll = 0b00,
@ -13,13 +13,8 @@ register_bit!(uart_clk_ctrl, clkact0, 0);
register_bit!(uart_clk_ctrl, clkact1, 1);
register_bits!(uart_clk_ctrl, divisor, u8, 8, 13);
register_bits!(uart_clk_ctrl, srcsel, u8, 4, 5);
register_at!(UartClkCtrl, 0xF8000154, new);
impl UartClkCtrl {
const ADDR: *mut Self = 0xF8000154 as *mut _;
pub fn new() -> &'static mut Self {
unsafe { &mut *Self::ADDR }
}
pub fn enable_uart0(&self) {
self.modify(|_, w| {
// a. Clock divisor, slcr.UART_CLK_CTRL[DIVISOR] = 0x14.
@ -37,13 +32,8 @@ register_bit!(uart_rst_ctrl, uart0_ref_rst, 3);
register_bit!(uart_rst_ctrl, uart1_ref_rst, 2);
register_bit!(uart_rst_ctrl, uart0_cpu1x_rst, 1);
register_bit!(uart_rst_ctrl, uart1_cpu1x_rst, 0);
register_at!(UartRstCtrl, 0xF8000228, new);
impl UartRstCtrl {
const ADDR: *mut Self = 0xF8000228 as *mut _;
pub fn new() -> &'static mut Self {
unsafe { &mut *Self::ADDR }
}
pub fn reset_uart0(&self) {
self.modify(|_, w| w.uart0_ref_rst(true));
self.modify(|_, w| w.uart0_ref_rst(false));

17
src/uart/regs.rs
View File

@ -1,6 +1,6 @@
use volatile_register::{RO, WO, RW};
use crate::{register, register_bit, register_bits, regs::*};
use crate::{register, register_bit, register_bits, register_at, regs::*};
#[repr(C)]
pub struct RegisterBlock {
@ -23,6 +23,8 @@ pub struct RegisterBlock {
pub unused1: RO<u32>,
pub tx_fifo_trigger_level: RW<u32>,
}
register_at!(RegisterBlock, 0xE0000000, uart0);
register_at!(RegisterBlock, 0xE0001000, uart1);
register!(control, Control, RW, u32);
register_bit!(control, rxrst, 0);
@ -46,16 +48,3 @@ register_bits!(tx_rx_fifo, data, u32, 0, 31);
register!(baud_rate_div, BaudRateDiv, RW, u32);
register_bits!(baud_rate_div, bdiv, u8, 0, 7);
impl RegisterBlock {
const UART0: *mut Self = 0xE0000000 as *mut _;
const UART1: *mut Self = 0xE0001000 as *mut _;
pub fn uart0() -> &'static mut Self {
unsafe { &mut *Self::UART0 }
}
pub fn uart1() -> &'static mut Self {
unsafe { &mut *Self::UART1 }
}
}