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|
#![no_std]
#![no_main]
#[cfg(feature = "rp2040")]
teleprobe_meta::target!(b"rpi-pico");
#[cfg(feature = "rp235xb")]
teleprobe_meta::target!(b"pimoroni-pico-plus-2");
use defmt::{assert_eq, info, panic};
use embassy_embedded_hal::SetConfig;
use embassy_executor::Spawner;
use embassy_rp::clocks::{PllConfig, XoscConfig};
use embassy_rp::config::Config as rpConfig;
use embassy_rp::peripherals::{I2C0, I2C1};
use embassy_rp::{bind_interrupts, i2c, i2c_slave};
use embedded_hal_1::i2c::Operation;
use embedded_hal_async::i2c::I2c;
use {defmt_rtt as _, panic_probe as _, panic_probe as _, panic_probe as _};
use crate::i2c::AbortReason;
bind_interrupts!(struct Irqs {
I2C0_IRQ => i2c::InterruptHandler<I2C0>;
I2C1_IRQ => i2c::InterruptHandler<I2C1>;
});
const DEV_ADDR: u8 = 0x42;
#[embassy_executor::task]
async fn device_task(mut dev: i2c_slave::I2cSlave<'static, I2C1>) -> ! {
info!("Device start");
let mut count = 0xD0;
loop {
let mut buf = [0u8; 128];
match dev.listen(&mut buf).await {
Ok(i2c_slave::Command::GeneralCall(len)) => {
assert_eq!(buf[..len], [0xCA, 0x11], "recieving the general call failed");
info!("General Call - OK");
}
Ok(i2c_slave::Command::Read) => {
loop {
match dev.respond_to_read(&[count]).await {
Ok(x) => match x {
i2c_slave::ReadStatus::Done => break,
i2c_slave::ReadStatus::NeedMoreBytes => count += 1,
i2c_slave::ReadStatus::LeftoverBytes(x) => panic!("tried to write {} extra bytes", x),
},
Err(e) => match e {
embassy_rp::i2c_slave::Error::Abort(AbortReason::Other(n)) => panic!("Other {:b}", n),
_ => panic!("{}", e),
},
}
}
count += 1;
}
Ok(i2c_slave::Command::Write(len)) => match len {
1 => {
assert_eq!(buf[..len], [0xAA], "recieving a single byte failed");
info!("Single Byte Write - OK")
}
4 => {
assert_eq!(buf[..len], [0xAA, 0xBB, 0xCC, 0xDD], "recieving 4 bytes failed");
info!("4 Byte Write - OK")
}
32 => {
assert_eq!(
buf[..len],
[
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,
25, 26, 27, 28, 29, 30, 31
],
"recieving 32 bytes failed"
);
info!("32 Byte Write - OK")
}
_ => panic!("Invalid write length {}", len),
},
Ok(i2c_slave::Command::WriteRead(len)) => {
info!("device received write read: {:x}", buf[..len]);
match buf[0] {
0xC2 => {
let resp_buff = [0xD1, 0xD2, 0xD3, 0xD4];
dev.respond_to_read(&resp_buff).await.unwrap();
}
0xC8 => {
let mut resp_buff = [0u8; 32];
for i in 0..32 {
resp_buff[i] = i as u8;
}
dev.respond_to_read(&resp_buff).await.unwrap();
// reset count for next round of tests
count = 0xD0;
}
x => panic!("Invalid Write Read {:x}", x),
}
}
Err(e) => match e {
embassy_rp::i2c_slave::Error::Abort(AbortReason::Other(n)) => panic!("Other {:b}", n),
_ => panic!("{}", e),
},
}
}
}
async fn controller_task(con: &mut i2c::I2c<'static, I2C0, i2c::Async>) {
info!("Controller start");
{
let buf = [0xCA, 0x11];
con.write(0u16, &buf).await.unwrap();
info!("Controler general call write");
embassy_futures::yield_now().await;
}
{
let mut buf = [0u8];
con.read(DEV_ADDR, &mut buf).await.unwrap();
assert_eq!(buf, [0xD0], "single byte read failed");
info!("single byte read - OK");
embassy_futures::yield_now().await;
}
{
let mut buf = [0u8; 4];
con.read(DEV_ADDR, &mut buf).await.unwrap();
assert_eq!(buf, [0xD1, 0xD2, 0xD3, 0xD4], "single byte read failed");
info!("4 byte read - OK");
embassy_futures::yield_now().await;
}
{
let buf = [0xAA];
con.write(DEV_ADDR, &buf).await.unwrap();
info!("Controler single byte write");
embassy_futures::yield_now().await;
}
{
let buf = [0xAA, 0xBB, 0xCC, 0xDD];
con.write(DEV_ADDR, &buf).await.unwrap();
info!("Controler 4 byte write");
embassy_futures::yield_now().await;
}
{
let mut buf = [0u8; 32];
for i in 0..32 {
buf[i] = i as u8;
}
con.write(DEV_ADDR, &buf).await.unwrap();
info!("Controler 32 byte write");
embassy_futures::yield_now().await;
}
{
let mut buf = [0u8; 4];
let mut ops = [Operation::Write(&[0xC2]), Operation::Read(&mut buf)];
con.transaction(DEV_ADDR, &mut ops).await.unwrap();
assert_eq!(buf, [0xD1, 0xD2, 0xD3, 0xD4], "write_read failed");
info!("write_read - OK");
embassy_futures::yield_now().await;
}
{
let mut buf = [0u8; 32];
let mut ops = [Operation::Write(&[0xC8]), Operation::Read(&mut buf)];
con.transaction(DEV_ADDR, &mut ops).await.unwrap();
assert_eq!(
buf,
[
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27,
28, 29, 30, 31
],
"write_read of 32 bytes failed"
);
info!("large write_read - OK")
}
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let mut config = rpConfig::default();
// Configure clk_sys to 48MHz to support 1kHz scl.
// In theory it can go lower, but we won't bother to test below 1kHz.
config.clocks.xosc = Some(XoscConfig {
hz: 12_000_000,
delay_multiplier: 128,
sys_pll: Some(PllConfig {
refdiv: 1,
fbdiv: 120,
post_div1: 6,
post_div2: 5,
}),
usb_pll: Some(PllConfig {
refdiv: 1,
fbdiv: 120,
post_div1: 6,
post_div2: 5,
}),
});
let p = embassy_rp::init(config);
info!("Hello World!");
let d_sda = p.PIN_19;
let d_scl = p.PIN_18;
let mut config = i2c_slave::Config::default();
config.addr = DEV_ADDR as u16;
let device = i2c_slave::I2cSlave::new(p.I2C1, d_sda, d_scl, Irqs, config);
spawner.spawn(device_task(device).unwrap());
let c_sda = p.PIN_21;
let c_scl = p.PIN_20;
let mut controller = i2c::I2c::new_async(p.I2C0, c_sda, c_scl, Irqs, Default::default());
for freq in [1000, 100_000, 400_000, 1_000_000] {
info!("testing at {}hz", freq);
let mut config = i2c::Config::default();
config.frequency = freq;
controller.set_config(&config).unwrap();
controller_task(&mut controller).await;
}
info!("Test OK");
cortex_m::asm::bkpt();
}
}
|
