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Build io_expander

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Signed-off-by: Egor Savkin <es@m-labs.hk>
This commit is contained in:
Egor Savkin 2023-02-15 15:31:22 +08:00
parent 4bc936f071
commit 8230a01701
2 changed files with 23 additions and 17 deletions
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39
src/runtime/src/io_expander.rs
View File

@ -11,9 +11,9 @@ struct Registers {
}
pub struct IoExpander {
busno: u8,
busno: i32,
port: u8,
address: u8,
address: i32,
virtual_led_mapping: &'static [(u8, u8, u8)],
iodir: [u8; 2],
out_current: [u8; 2],
@ -22,7 +22,7 @@ pub struct IoExpander {
}
impl IoExpander {
#[cfg(all(soc_platform = "kasli", hw_rev = "v2.0"))]
#[cfg(feature = "target_kasli_soc")]
pub fn new(index: u8) -> Result<Self, &'static str> {
const VIRTUAL_LED_MAPPING0: [(u8, u8, u8); 2] = [(0, 0, 6), (1, 1, 6)];
const VIRTUAL_LED_MAPPING1: [(u8, u8, u8); 2] = [(2, 0, 6), (3, 1, 6)];
@ -81,29 +81,34 @@ impl IoExpander {
Ok(io_expander)
}
#[cfg(soc_platform = "kasli")]
#[cfg(feature = "target_kasli_soc")]
fn select(&self) -> Result<(), &'static str> {
let mask: u16 = 1 << self.port;
i2c::switch_select(self.busno, 0x70, mask as u8)?;
i2c::switch_select(self.busno, 0x71, (mask >> 8) as u8)?;
let mask: i32 = 1 << self.port;
i2c::switch_select(self.busno, 0x70, mask);
i2c::switch_select(self.busno, 0x71, (mask >> 8));
Ok(())
}
#[cfg(not(feature = "target_kasli_soc"))]
fn select(&self) -> Result<(), &'static str> {
Err("the target is not supported yet")
}
fn write(&self, addr: u8, value: u8) -> Result<(), &'static str> {
i2c::start(self.busno)?;
i2c::write(self.busno, self.address)?;
i2c::write(self.busno, addr)?;
i2c::write(self.busno, value)?;
i2c::stop(self.busno)?;
i2c::start(self.busno);
i2c::write(self.busno, self.address as i32);
i2c::write(self.busno, addr as i32);
i2c::write(self.busno, value as i32);
i2c::stop(self.busno);
Ok(())
}
fn check_ack(&self) -> Result<bool, &'static str> {
// Check for ack from io expander
self.select()?;
i2c::start(self.busno)?;
let ack = i2c::write(self.busno, self.address)?;
i2c::stop(self.busno)?;
i2c::start(self.busno);
let ack = i2c::write(self.busno, self.address);
i2c::stop(self.busno);
Ok(ack)
}
@ -144,8 +149,8 @@ impl IoExpander {
pub fn service(&mut self) -> Result<(), &'static str> {
for (led, port, bit) in self.virtual_led_mapping.iter() {
let level = unsafe { (csr::virtual_leds::status_read() >> led) & 1 };
self.set(*port, *bit, level != 0);
//let level = unsafe { (csr::virtual_leds::status_read() >> led) & 1 };
self.set(*port, *bit, true);
}
if self.out_target != self.out_current {

1
src/runtime/src/main.rs
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@ -46,6 +46,7 @@ mod mgmt;
mod analyzer;
mod irq;
mod i2c;
#[cfg(feature = "target_kasli_soc")]
mod io_expander;
static mut SEEN_ASYNC_ERRORS: u8 = 0;