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drtio: send/process I2C and SPI aux packets (#740)

This commit is contained in:
Sebastien Bourdeauducq 2017-06-21 16:50:51 +08:00
parent f58f16ccd4
commit 66dee9d1ad
2 changed files with 172 additions and 20 deletions
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143
artiq/firmware/runtime/kern_hwreq.rs
View File

@ -4,28 +4,85 @@ use kernel_proto as kern;
use std::io;
use sched::Io;
// TODO
#[cfg(has_drtio)]
mod drtio_i2c {
pub fn start(_busno: u32) -> Result<(), ()> {
use drtioaux;
fn basic_reply() -> Result<(), ()> {
match drtioaux::hw::recv_timeout(None) {
Ok(drtioaux::Packet::I2cBasicReply { succeeded }) => {
if succeeded { Ok(()) } else { Err(()) }
}
Ok(_) => {
error!("received unexpected aux packet");
Err(())
}
pub fn restart(_busno: u32) -> Result<(), ()> {
Err(e) => {
error!("aux packet error ({})", e);
Err(())
}
pub fn stop(_busno: u32) -> Result<(), ()> {
Err(())
}
}
pub fn write(_busno: u32, _data: u8) -> Result<bool, ()> {
Err(())
pub fn start(busno: u32) -> Result<(), ()> {
let request = drtioaux::Packet::I2cStartRequest { busno: busno as u8 };
drtioaux::hw::send(&request).unwrap();
basic_reply()
}
pub fn read(_busno: u32, _ack: bool) -> Result<u8, ()> {
pub fn restart(busno: u32) -> Result<(), ()> {
let request = drtioaux::Packet::I2cRestartRequest { busno: busno as u8 };
drtioaux::hw::send(&request).unwrap();
basic_reply()
}
pub fn stop(busno: u32) -> Result<(), ()> {
let request = drtioaux::Packet::I2cStopRequest { busno: busno as u8 };
drtioaux::hw::send(&request).unwrap();
basic_reply()
}
pub fn write(busno: u32, data: u8) -> Result<bool, ()> {
let request = drtioaux::Packet::I2cWriteRequest {
busno: busno as u8,
data: data
};
drtioaux::hw::send(&request).unwrap();
match drtioaux::hw::recv_timeout(None) {
Ok(drtioaux::Packet::I2cWriteReply { succeeded, ack }) => {
if succeeded { Ok(ack) } else { Err(()) }
}
Ok(_) => {
error!("received unexpected aux packet");
Err(())
}
Err(e) => {
error!("aux packet error ({})", e);
Err(())
}
}
}
pub fn read(busno: u32, ack: bool) -> Result<u8, ()> {
let request = drtioaux::Packet::I2cReadRequest {
busno: busno as u8,
ack: ack
};
drtioaux::hw::send(&request).unwrap();
match drtioaux::hw::recv_timeout(None) {
Ok(drtioaux::Packet::I2cReadReply { succeeded, data }) => {
if succeeded { Ok(data) } else { Err(()) }
}
Ok(_) => {
error!("received unexpected aux packet");
Err(())
}
Err(e) => {
error!("aux packet error ({})", e);
Err(())
}
}
}
}
#[cfg(not(has_drtio))]
@ -106,24 +163,74 @@ mod i2c {
}
}
// TODO
#[cfg(has_drtio)]
mod drtio_spi {
pub fn set_config(_busno: u32, _flags: u8, _write_div: u8, _read_div: u8) -> Result<(), ()> {
use drtioaux;
fn basic_reply() -> Result<(), ()> {
match drtioaux::hw::recv_timeout(None) {
Ok(drtioaux::Packet::SpiBasicReply { succeeded }) => {
if succeeded { Ok(()) } else { Err(()) }
}
Ok(_) => {
error!("received unexpected aux packet");
Err(())
}
pub fn set_xfer(_busno: u32, _chip_select: u16, _write_length: u8, _read_length: u8) -> Result<(), ()> {
Err(e) => {
error!("aux packet error ({})", e);
Err(())
}
pub fn write(_busno: u32, _data: u32) -> Result<(), ()> {
Err(())
}
}
pub fn read(_busno: u32) -> Result<u32, ()> {
pub fn set_config(busno: u32, flags: u8, write_div: u8, read_div: u8) -> Result<(), ()> {
let request = drtioaux::Packet::SpiSetConfigRequest {
busno: busno as u8,
flags: flags,
write_div: write_div,
read_div: read_div
};
drtioaux::hw::send(&request).unwrap();
basic_reply()
}
pub fn set_xfer(busno: u32, chip_select: u16, write_length: u8, read_length: u8) -> Result<(), ()> {
let request = drtioaux::Packet::SpiSetXferRequest {
busno: busno as u8,
chip_select: chip_select,
write_length: write_length,
read_length: read_length
};
drtioaux::hw::send(&request).unwrap();
basic_reply()
}
pub fn write(busno: u32, data: u32) -> Result<(), ()> {
let request = drtioaux::Packet::SpiWriteRequest {
busno: busno as u8,
data: data
};
drtioaux::hw::send(&request).unwrap();
basic_reply()
}
pub fn read(busno: u32) -> Result<u32, ()> {
let request = drtioaux::Packet::SpiReadRequest { busno: busno as u8 };
drtioaux::hw::send(&request).unwrap();
match drtioaux::hw::recv_timeout(None) {
Ok(drtioaux::Packet::SpiReadReply { succeeded, data }) => {
if succeeded { Ok(data) } else { Err(()) }
}
Ok(_) => {
error!("received unexpected aux packet");
Err(())
}
Err(e) => {
error!("aux packet error ({})", e);
Err(())
}
}
}
}
#[cfg(not(has_drtio))]

45
artiq/firmware/satman/lib.rs
View File

@ -76,6 +76,51 @@ fn process_aux_packet(p: &drtioaux::Packet) {
let reply = drtioaux::Packet::InjectionStatusReply { value: value };
drtioaux::hw::send(&reply).unwrap();
},
drtioaux::Packet::I2cStartRequest { busno } => {
let succeeded = board::i2c::start(busno).is_ok();
drtioaux::hw::send(&drtioaux::Packet::I2cBasicReply { succeeded: succeeded }).unwrap();
}
drtioaux::Packet::I2cRestartRequest { busno } => {
let succeeded = board::i2c::restart(busno).is_ok();
drtioaux::hw::send(&drtioaux::Packet::I2cBasicReply { succeeded: succeeded }).unwrap();
}
drtioaux::Packet::I2cStopRequest { busno } => {
let succeeded = board::i2c::stop(busno).is_ok();
drtioaux::hw::send(&drtioaux::Packet::I2cBasicReply { succeeded: succeeded }).unwrap();
}
drtioaux::Packet::I2cWriteRequest { busno, data } => {
match board::i2c::write(busno, data) {
Ok(ack) => drtioaux::hw::send(&drtioaux::Packet::I2cWriteReply { succeeded: true, ack: ack }).unwrap(),
Err(_) => drtioaux::hw::send(&drtioaux::Packet::I2cWriteReply { succeeded: false, ack: false }).unwrap()
};
}
drtioaux::Packet::I2cReadRequest { busno, ack } => {
match board::i2c::read(busno, ack) {
Ok(data) => drtioaux::hw::send(&drtioaux::Packet::I2cReadReply { succeeded: true, data: data }).unwrap(),
Err(_) => drtioaux::hw::send(&drtioaux::Packet::I2cReadReply { succeeded: false, data: 0xff }).unwrap()
};
}
drtioaux::Packet::SpiSetConfigRequest { busno, flags, write_div, read_div } => {
let succeeded = board::spi::set_config(busno, flags, write_div, read_div).is_ok();
drtioaux::hw::send(&drtioaux::Packet::SpiBasicReply { succeeded: succeeded }).unwrap();
},
drtioaux::Packet::SpiSetXferRequest { busno, chip_select, write_length, read_length } => {
let succeeded = board::spi::set_xfer(busno, chip_select, write_length, read_length).is_ok();
drtioaux::hw::send(&drtioaux::Packet::SpiBasicReply { succeeded: succeeded }).unwrap();
}
drtioaux::Packet::SpiWriteRequest { busno, data } => {
let succeeded = board::spi::write(busno, data).is_ok();
drtioaux::hw::send(&drtioaux::Packet::SpiBasicReply { succeeded: succeeded }).unwrap();
}
drtioaux::Packet::SpiReadRequest { busno } => {
match board::spi::read(busno) {
Ok(data) => drtioaux::hw::send(&drtioaux::Packet::SpiReadReply { succeeded: true, data: data }).unwrap(),
Err(_) => drtioaux::hw::send(&drtioaux::Packet::SpiReadReply { succeeded: false, data: 0 }).unwrap()
};
}
_ => warn!("received unexpected aux packet {:?}", p)
}
}