itsscb/embassy
1
0
Fork 0
mirror of https://github.com/embassy-rs/embassy.git synced 2025-09-29 21:31:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

use upstream command definitions

Browse Source
This commit is contained in:
Anton Lazarev 2025-03-24 12:47:08 -07:00
parent d22a7a3a96
commit 5d01712d84
No known key found for this signature in database
GPG Key ID: FBD20243E0CD9104
1 changed files with 55 additions and 151 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

206
embassy-stm32/src/sdmmc/mod.rs
View File

@ -10,7 +10,11 @@ use core::task::Poll;
use embassy_hal_internal::drop::OnDrop;
use embassy_hal_internal::{Peri, PeripheralType};
use embassy_sync::waitqueue::AtomicWaker;
use sdio_host::sd::{BusWidth, CardCapacity, CardStatus, CurrentState, SDStatus, CID, CSD, OCR, SCR, SD};
use sdio_host::{
common_cmd::{self, Resp, ResponseLen},
sd::{BusWidth, CardCapacity, CardStatus, CurrentState, SDStatus, CIC, CID, CSD, OCR, RCA, SCR, SD},
sd_cmd, Cmd,
};
#[cfg(sdmmc_v1)]
use crate::dma::ChannelAndRequest;
@ -136,6 +140,8 @@ pub enum Error {
UnsupportedCardVersion,
/// Unsupported card type.
UnsupportedCardType,
/// Unsupported voltage.
UnsupportedVoltage,
/// CRC error.
Crc,
/// No card inserted.
@ -149,13 +155,6 @@ pub enum Error {
StBitErr,
}
/// A SD command
struct Cmd {
cmd: u8,
arg: u32,
resp: Response,
}
#[derive(Clone, Copy, Debug, Default)]
/// SD Card
pub struct Card {
@ -164,7 +163,7 @@ pub struct Card {
/// Operation Conditions Register
pub ocr: OCR<SD>,
/// Relative Card Address
pub rca: u32,
pub rca: u16,
/// Card ID
pub cid: CID<SD>,
/// Card Specific Data
@ -189,22 +188,12 @@ enum PowerCtrl {
On = 0b11,
}
#[repr(u32)]
#[allow(dead_code)]
#[allow(non_camel_case_types)]
enum CmdAppOper {
VOLTAGE_WINDOW_SD = 0x8010_0000,
HIGH_CAPACITY = 0x4000_0000,
SDMMC_STD_CAPACITY = 0x0000_0000,
SDMMC_CHECK_PATTERN = 0x0000_01AA,
SD_SWITCH_1_8V_CAPACITY = 0x0100_0000,
}
#[derive(Eq, PartialEq, Copy, Clone)]
enum Response {
None = 0,
Short = 1,
Long = 3,
fn get_waitresp_val(rlen: ResponseLen) -> u8 {
match rlen {
common_cmd::ResponseLen::Zero => 0,
common_cmd::ResponseLen::R48 => 1,
common_cmd::ResponseLen::R136 => 3,
}
}
/// Calculate clock divisor. Returns a SDMMC_CK less than or equal to
@ -710,7 +699,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
6,
);
InterruptHandler::<T>::data_interrupts(true);
Self::cmd(Cmd::cmd6(set_function), true)?; // CMD6
Self::cmd(sd_cmd::cmd6(set_function), true)?; // CMD6
let res = poll_fn(|cx| {
T::state().register(cx.waker());
@ -769,7 +758,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
let regs = T::regs();
let rca = card.rca;
Self::cmd(Cmd::card_status(rca << 16), false)?; // CMD13
Self::cmd(common_cmd::card_status(rca, false), false)?; // CMD13
let r1 = regs.respr(0).read().cardstatus();
Ok(r1.into())
@ -785,8 +774,8 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
None => &mut CmdBlock::new(),
};
Self::cmd(Cmd::set_block_length(64), false)?; // CMD16
Self::cmd(Cmd::app_cmd(rca << 16), false)?; // APP
Self::cmd(common_cmd::set_block_length(64), false)?; // CMD16
Self::cmd(common_cmd::app_cmd(rca), false)?; // APP
let status = cmd_block;
@ -803,7 +792,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
6,
);
InterruptHandler::<T>::data_interrupts(true);
Self::cmd(Cmd::card_status(0), true)?;
Self::cmd(sd_cmd::sd_status(), true)?;
let res = poll_fn(|cx| {
T::state().register(cx.waker());
@ -846,9 +835,9 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
/// _Stand-by State_
fn select_card(&self, card: Option<&Card>) -> Result<(), Error> {
// Determine Relative Card Address (RCA) of given card
let rca = card.map(|c| c.rca << 16).unwrap_or(0);
let rca = card.map(|c| c.rca).unwrap_or(0);
let r = Self::cmd(Cmd::sel_desel_card(rca), false);
let r = Self::cmd(common_cmd::select_card(rca), false);
match (r, rca) {
(Err(Error::Timeout), 0) => Ok(()),
_ => r,
@ -891,8 +880,8 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
async fn get_scr(&mut self, card: &mut Card) -> Result<(), Error> {
// Read the 64-bit SCR register
Self::cmd(Cmd::set_block_length(8), false)?; // CMD16
Self::cmd(Cmd::app_cmd(card.rca << 16), false)?;
Self::cmd(common_cmd::set_block_length(8), false)?; // CMD16
Self::cmd(common_cmd::app_cmd(card.rca), false)?;
let cmd_block = match self.cmd_block.as_deref_mut() {
Some(x) => x,
@ -913,7 +902,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
3,
);
InterruptHandler::<T>::data_interrupts(true);
Self::cmd(Cmd::cmd51(), true)?;
Self::cmd(sd_cmd::send_scr(), true)?;
let res = poll_fn(|cx| {
T::state().register(cx.waker());
@ -952,7 +941,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
/// Send command to card
#[allow(unused_variables)]
fn cmd(cmd: Cmd, data: bool) -> Result<(), Error> {
fn cmd<R: Resp>(cmd: Cmd<R>, data: bool) -> Result<(), Error> {
let regs = T::regs();
Self::clear_interrupt_flags();
@ -965,7 +954,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
// Command index and start CP State Machine
regs.cmdr().write(|w| {
w.set_waitint(false);
w.set_waitresp(cmd.resp as u8);
w.set_waitresp(get_waitresp_val(cmd.response_len()));
w.set_cmdindex(cmd.cmd);
w.set_cpsmen(true);
@ -980,7 +969,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
});
let mut status;
if cmd.resp == Response::None {
if cmd.response_len() == ResponseLen::Zero {
// Wait for CMDSENT or a timeout
while {
status = regs.star().read();
@ -1016,7 +1005,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
// Command index and start CP State Machine
regs.cmdr().write(|w| {
w.set_waitint(false);
w.set_waitresp(Response::Short as u8);
w.set_waitresp(get_waitresp_val(ResponseLen::R48));
w.set_cmdindex(12);
w.set_cpsmen(true);
@ -1061,29 +1050,30 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
});
regs.power().modify(|w| w.set_pwrctrl(PowerCtrl::On as u8));
Self::cmd(Cmd::idle(), false)?;
Self::cmd(common_cmd::idle(), false)?;
// Check if cards supports CMD8 (with pattern)
Self::cmd(Cmd::hs_send_ext_csd(0x1AA), false)?;
let r1 = regs.respr(0).read().cardstatus();
Self::cmd(sd_cmd::send_if_cond(1, 0xAA), false)?;
let cic = CIC::from(regs.respr(0).read().cardstatus());
let mut card = if r1 == 0x1AA {
// Card echoed back the pattern. Must be at least v2
Card::default()
} else {
if cic.pattern() != 0xAA {
return Err(Error::UnsupportedCardVersion);
};
}
if cic.voltage_accepted() & 1 == 0 {
return Err(Error::UnsupportedVoltage);
}
let mut card = Card::default();
let ocr = loop {
// Signal that next command is a app command
Self::cmd(Cmd::app_cmd(0), false)?; // CMD55
let arg = CmdAppOper::VOLTAGE_WINDOW_SD as u32
| CmdAppOper::HIGH_CAPACITY as u32
| CmdAppOper::SD_SWITCH_1_8V_CAPACITY as u32;
Self::cmd(common_cmd::app_cmd(0), false)?; // CMD55
// 3.2-3.3V
let voltage_window = 1 << 5;
// Initialize card
match Self::cmd(Cmd::app_op_cmd(arg), false) {
match Self::cmd(sd_cmd::sd_send_op_cond(true, false, true, voltage_window), false) {
// ACMD41
Ok(_) => (),
Err(Error::Crc) => (),
@ -1104,7 +1094,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
}
card.ocr = ocr;
Self::cmd(Cmd::all_send_cid(), false)?; // CMD2
Self::cmd(common_cmd::all_send_cid(), false)?; // CMD2
let cid0 = regs.respr(0).read().cardstatus() as u128;
let cid1 = regs.respr(1).read().cardstatus() as u128;
let cid2 = regs.respr(2).read().cardstatus() as u128;
@ -1112,10 +1102,11 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
let cid = (cid0 << 96) | (cid1 << 64) | (cid2 << 32) | (cid3);
card.cid = cid.into();
Self::cmd(Cmd::send_rel_addr(), false)?;
card.rca = regs.respr(0).read().cardstatus() >> 16;
Self::cmd(sd_cmd::send_relative_address(), false)?;
let rca = RCA::<SD>::from(regs.respr(0).read().cardstatus());
card.rca = rca.address();
Self::cmd(Cmd::send_csd(card.rca << 16), false)?;
Self::cmd(common_cmd::send_csd(card.rca), false)?;
let csd0 = regs.respr(0).read().cardstatus() as u128;
let csd1 = regs.respr(1).read().cardstatus() as u128;
let csd2 = regs.respr(2).read().cardstatus() as u128;
@ -1133,8 +1124,8 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
BusWidth::Four if card.scr.bus_width_four() => (BusWidth::Four, 2),
_ => (BusWidth::One, 0),
};
Self::cmd(Cmd::app_cmd(card.rca << 16), false)?;
Self::cmd(Cmd::cmd6(acmd_arg), false)?;
Self::cmd(common_cmd::app_cmd(card.rca), false)?;
Self::cmd(sd_cmd::cmd6(acmd_arg), false)?;
// CPSMACT and DPSMACT must be 0 to set WIDBUS
Self::wait_idle();
@ -1196,7 +1187,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
CardCapacity::StandardCapacity => block_idx * 512,
_ => block_idx,
};
Self::cmd(Cmd::set_block_length(512), false)?; // CMD16
Self::cmd(common_cmd::set_block_length(512), false)?; // CMD16
let regs = T::regs();
let on_drop = OnDrop::new(|| Self::on_drop());
@ -1210,7 +1201,7 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
9,
);
InterruptHandler::<T>::data_interrupts(true);
Self::cmd(Cmd::read_single_block(address), true)?;
Self::cmd(common_cmd::read_single_block(address), true)?;
let res = poll_fn(|cx| {
T::state().register(cx.waker());
@ -1255,20 +1246,20 @@ impl<'d, T: Instance> Sdmmc<'d, T> {
CardCapacity::StandardCapacity => block_idx * 512,
_ => block_idx,
};
Self::cmd(Cmd::set_block_length(512), false)?; // CMD16
Self::cmd(common_cmd::set_block_length(512), false)?; // CMD16
let regs = T::regs();
let on_drop = OnDrop::new(|| Self::on_drop());
// sdmmc_v1 uses different cmd/dma order than v2, but only for writes
#[cfg(sdmmc_v1)]
Self::cmd(Cmd::write_single_block(address), true)?;
Self::cmd(common_cmd::write_single_block(address), true)?;
let transfer = self.prepare_datapath_write(buffer, 512, 9);
InterruptHandler::<T>::data_interrupts(true);
#[cfg(sdmmc_v2)]
Self::cmd(Cmd::write_single_block(address), true)?;
Self::cmd(common_cmd::write_single_block(address), true)?;
let res = poll_fn(|cx| {
T::state().register(cx.waker());
@ -1363,93 +1354,6 @@ impl<'d, T: Instance> Drop for Sdmmc<'d, T> {
}
}
/// SD card Commands
impl Cmd {
const fn new(cmd: u8, arg: u32, resp: Response) -> Cmd {
Cmd { cmd, arg, resp }
}
/// CMD0: Idle
const fn idle() -> Cmd {
Cmd::new(0, 0, Response::None)
}
/// CMD2: Send CID
const fn all_send_cid() -> Cmd {
Cmd::new(2, 0, Response::Long)
}
/// CMD3: Send Relative Address
const fn send_rel_addr() -> Cmd {
Cmd::new(3, 0, Response::Short)
}
/// CMD6: Switch Function Command
/// ACMD6: Bus Width
const fn cmd6(arg: u32) -> Cmd {
Cmd::new(6, arg, Response::Short)
}
/// CMD7: Select one card and put it into the _Tranfer State_
const fn sel_desel_card(rca: u32) -> Cmd {
Cmd::new(7, rca, Response::Short)
}
/// CMD8:
const fn hs_send_ext_csd(arg: u32) -> Cmd {
Cmd::new(8, arg, Response::Short)
}
/// CMD9:
const fn send_csd(rca: u32) -> Cmd {
Cmd::new(9, rca, Response::Long)
}
/// CMD12:
//const fn stop_transmission() -> Cmd {
// Cmd::new(12, 0, Response::Short)
//}
/// CMD13: Ask card to send status register
/// ACMD13: SD Status
const fn card_status(rca: u32) -> Cmd {
Cmd::new(13, rca, Response::Short)
}
/// CMD16:
const fn set_block_length(blocklen: u32) -> Cmd {
Cmd::new(16, blocklen, Response::Short)
}
/// CMD17: Block Read
const fn read_single_block(addr: u32) -> Cmd {
Cmd::new(17, addr, Response::Short)
}
/// CMD18: Multiple Block Read
//const fn read_multiple_blocks(addr: u32) -> Cmd {
// Cmd::new(18, addr, Response::Short)
//}
/// CMD24: Block Write
const fn write_single_block(addr: u32) -> Cmd {
Cmd::new(24, addr, Response::Short)
}
const fn app_op_cmd(arg: u32) -> Cmd {
Cmd::new(41, arg, Response::Short)
}
const fn cmd51() -> Cmd {
Cmd::new(51, 0, Response::Short)
}
/// App Command. Indicates that next command will be a app command
const fn app_cmd(rca: u32) -> Cmd {
Cmd::new(55, rca, Response::Short)
}
}
//////////////////////////////////////////////////////
trait SealedInstance {