forked from M-Labs/artiq-zynq
40 lines
964 B
Rust
40 lines
964 B
Rust
use libboard_zynq;
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static mut I2C_BUS: Option<libboard_zynq::i2c::I2c> = None;
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pub extern fn start(_busno: i32) {
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unsafe {
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(&mut I2C_BUS).as_mut().unwrap().start().expect("I2C start failed")
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}
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}
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pub extern fn restart(_busno: i32) {
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unsafe {
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(&mut I2C_BUS).as_mut().unwrap().restart().expect("I2C restart failed")
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}
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}
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pub extern fn stop(_busno: i32) {
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unsafe {
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(&mut I2C_BUS).as_mut().unwrap().stop().expect("I2C stop failed")
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}
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}
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pub extern fn write(_busno: i32, data: i32) -> bool {
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unsafe {
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(&mut I2C_BUS).as_mut().unwrap().write(data as u8).expect("I2C write failed")
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}
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}
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pub extern fn read(_busno: i32, ack: bool) -> i32 {
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unsafe {
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(&mut I2C_BUS).as_mut().unwrap().read(ack).expect("I2C read failed") as i32
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}
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}
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pub fn init() {
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let mut i2c = libboard_zynq::i2c::I2c::i2c0();
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i2c.init().expect("I2C bus initialization failed");
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unsafe { I2C_BUS = Some(i2c) };
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}
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