M-Labs/artiq-zynq
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improve i2c error reporting

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This commit is contained in:
Sebastien Bourdeauducq 2020-09-06 00:38:28 +08:00
parent 36d8ffec3b
commit 2fe73505c8
1 changed files with 39 additions and 10 deletions
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49
src/runtime/src/i2c.rs
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@ -1,34 +1,63 @@
use libboard_zynq;
use crate::artiq_raise;
static mut I2C_BUS: Option<libboard_zynq::i2c::I2c> = None;
pub extern fn start(_busno: i32) {
pub extern fn start(busno: i32) {
if busno > 0 {
artiq_raise!("I2CError", "I2C bus could not be accessed");
}
unsafe {
(&mut I2C_BUS).as_mut().unwrap().start().expect("I2C start failed")
if (&mut I2C_BUS).as_mut().unwrap().start().is_err() {
artiq_raise!("I2CError", "I2C start failed");
}
}
}
pub extern fn restart(_busno: i32) {
pub extern fn restart(busno: i32) {
if busno > 0 {
artiq_raise!("I2CError", "I2C bus could not be accessed");
}
unsafe {
(&mut I2C_BUS).as_mut().unwrap().restart().expect("I2C restart failed")
if (&mut I2C_BUS).as_mut().unwrap().restart().is_err() {
artiq_raise!("I2CError", "I2C restart failed");
}
}
}
pub extern fn stop(_busno: i32) {
pub extern fn stop(busno: i32) {
if busno > 0 {
artiq_raise!("I2CError", "I2C bus could not be accessed");
}
unsafe {
(&mut I2C_BUS).as_mut().unwrap().stop().expect("I2C stop failed")
if (&mut I2C_BUS).as_mut().unwrap().stop().is_err() {
artiq_raise!("I2CError", "I2C stop failed");
}
}
}
pub extern fn write(_busno: i32, data: i32) -> bool {
pub extern fn write(busno: i32, data: i32) -> bool {
if busno > 0 {
artiq_raise!("I2CError", "I2C bus could not be accessed");
}
unsafe {
(&mut I2C_BUS).as_mut().unwrap().write(data as u8).expect("I2C write failed")
match (&mut I2C_BUS).as_mut().unwrap().write(data as u8) {
Ok(r) => r,
Err(_) => artiq_raise!("I2CError", "I2C write failed"),
}
}
}
pub extern fn read(_busno: i32, ack: bool) -> i32 {
pub extern fn read(busno: i32, ack: bool) -> i32 {
if busno > 0 {
artiq_raise!("I2CError", "I2C bus could not be accessed");
}
unsafe {
(&mut I2C_BUS).as_mut().unwrap().read(ack).expect("I2C read failed") as i32
match (&mut I2C_BUS).as_mut().unwrap().read(ack) {
Ok(r) => r as i32,
Err(_) => artiq_raise!("I2CError", "I2C read failed"),
}
}
}