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libapp-expanded-json.rs
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#![feature(prelude_import)]
#![no_std]
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
//! Sensor app that reads sensor data from a temperature sensor and sends the sensor data to a CoAP server over NB-IoT.
//! Note that we are using a patched version of apps/my_sensor_app/src/vsscanf.c that
//! fixes AT response parsing bugs. The patched file must be present in that location.
//! This is the Rust version of `https://github.com/lupyuen/stm32bluepill-mynewt-sensor/blob/rust-nbiot/apps/my_sensor_app/OLDsrc/main.c`
#![no_std]
// Don't link with standard Rust library, which is not compatible with embedded systems
#![feature(trace_macros)]
// Allow macro tracing: `trace_macros!(true)`
#![feature(concat_idents)]
// Allow `concat_idents!()` macro used in `coap!()` macro
#![feature(const_transmute)]
// Allow `transmute` for initialising Mynewt structs
#![feature(proc_macro_hygiene)]
// Allow Procedural Macros like `run!()`
#![feature(custom_attribute)]
#[prelude_import]
use ::core::prelude::v1::*;
#[macro_use]
extern crate core as core;
#[macro_use]
extern crate compiler_builtins as compiler_builtins;
// Allow Custom Attributes like `#[safe_wrap]`
extern crate cortex_m;
// Declare the external library `cortex_m`
extern crate mynewt;
// Declare the Mynewt library
extern crate macros as mynewt_macros;
// Declare the Mynewt Procedural Macros library
mod app_sensor {
// Declare `app_sensor.rs` as Rust module `app_sensor` for Application Sensor functions
// Declare `app_network.rs` as Rust module `app_network` for Application Network functions
// Import `PanicInfo` type which is used by `panic()` below
// Import cortex_m assembly function to inject breakpoint
// Import Mynewt OS API
// Import Mynewt Console API
// Import Mynewt Sensor Network Library
// Don't mangle the name "main"
// Declare extern "C" because it will be called by Mynewt
// Initialise the Mynewt packages and Blue Pill internal temperature sensor driver.
// Start the CoAP / OIC Background Task to transmit CoAP messages. Any startup
// functions defined in pkg.yml of our custom drivers and libraries will be called by
// sysinit(). Here are the startup functions consolidated by Mynewt:
// bin/targets/bluepill_my_sensor/generated/src/bluepill_my_sensor-sysinit-app.c
// Start polling the temperature sensor every 10 seconds in the background.
// Start the Server Transport for sending sensor data to CoAP Server over NB-IoT.
// Main event loop
// Loop forever...
// Processing events...
// From default event queue.
// Never comes here
// Display the filename and line number to the Semihosting Console.
// TODO: Print in decimal not hex. Allow more than 255 lines.
// Pause in the debugger.
// Loop forever so that device won't restart.
//! Poll the temperature sensor every 10 seconds. Transmit the sensor data to the CoAP server after polling.
//! This is the Rust version of https://github.com/lupyuen/stm32bluepill-mynewt-sensor/blob/rust-nbiot/apps/my_sensor_app/OLDsrc/sensor.c
use mynewt::{result::*,
hw::sensor::{self, sensor_ptr, sensor_arg, sensor_data_ptr,
sensor_listener, sensor_temp_raw_data,
sensor_type_t, SensorValue, SensorValueType},
sys::console, fill_zero, Strn};
use mynewt_macros::{init_strn};
use crate::app_network::send_sensor_data;
/// Sensor to be polled: `temp_stm32_0` is Blue Pill's internal temperature sensor
static SENSOR_DEVICE: Strn =
Strn{rep: mynewt::StrnRep::ByteStr(b"temp_stm32_0\x00"),};
/// Poll sensor every 10,000 milliseconds (10 seconds)
const SENSOR_POLL_TIME: u32 = (10 * 1000);
/// Use key (field name) `t` to transmit raw temperature to CoAP Server
const TEMP_SENSOR_KEY: &str = "t";
/// Type of sensor: Raw temperature sensor (integer sensor values 0 to 4095)
const TEMP_SENSOR_TYPE: sensor_type_t =
sensor::SENSOR_TYPE_AMBIENT_TEMPERATURE_RAW;
/// Ask Mynewt to poll the temperature sensor every 10 seconds and call `handle_sensor_data()`.
/// Return `Ok()` if successful, else return `Err()` with `MynewtError` error code inside.
pub fn start_sensor_listener() -> MynewtResult<()> {
console::print("Rust TMP poll\n");
sensor::set_poll_rate_ms(&SENSOR_DEVICE, SENSOR_POLL_TIME)?;
let sensor =
sensor::mgr_find_next_bydevname(&SENSOR_DEVICE,
core::ptr::null_mut())?;
if !!sensor.is_null() {
{
::core::panicking::panic(&("no sensor",
"rust/app/src/app_sensor.rs",
56u32, 5u32))
}
};
let listener =
sensor_listener{sl_sensor_type: TEMP_SENSOR_TYPE,
sl_func:
sensor::as_untyped(handle_sensor_data),
..unsafe
{
::core::mem::transmute::<[u8; ::core::mem::size_of::<sensor_listener>()],
sensor_listener>([0;
::core::mem::size_of::<sensor_listener>()])
}};
sensor::register_listener(sensor, listener)?;
Ok(())
}
/// This listener function is called every 10 seconds by Mynewt to handle the polled sensor data.
/// Return 0 if we have handled the sensor data successfully.
extern "C" fn handle_sensor_data(sensor: sensor_ptr, _arg: sensor_arg,
sensor_data: sensor_data_ptr,
sensor_type: sensor_type_t)
-> MynewtError {
console::print("Rust handle_sensor_data\n");
if sensor_data.is_null() { return MynewtError::SYS_EINVAL; }
if !!sensor.is_null() {
{
::core::panicking::panic(&("null sensor",
"rust/app/src/app_sensor.rs",
80u32, 5u32))
}
};
let sensor_value = convert_sensor_data(sensor_data, sensor_type);
if let SensorValueType::None = sensor_value.val {
if !false {
{
::core::panicking::panic(&("bad type",
"rust/app/src/app_sensor.rs",
84u32, 55u32))
}
};
}
let res = send_sensor_data(&sensor_value);
if let Err(err) = res {
if err == MynewtError::SYS_EAGAIN {
console::print("TMP network not ready\n");
return MynewtError::SYS_EOK;
}
}
MynewtError::SYS_EOK
}
/// Convert the raw temperature value received from Mynewt into a `SensorValue` for transmission, which includes the sensor data key `t`.
/// `sensor_type` indicates the type of data in `sensor_data`.
#[allow(non_snake_case, unused_variables)]
fn convert_sensor_data(sensor_data: sensor_data_ptr,
sensor_type: sensor_type_t) -> SensorValue {
console::print("TMP listener got rawtmp\n");
SensorValue{key: TEMP_SENSOR_KEY,
val:
match sensor_type {
SENSOR_TYPE_AMBIENT_TEMPERATURE_RAW => {
let mut rawtempdata =
unsafe {
::core::mem::transmute::<[u8; ::core::mem::size_of::<sensor_temp_raw_data>()],
sensor_temp_raw_data>([0;
::core::mem::size_of::<sensor_temp_raw_data>()])
};
let rc =
unsafe {
sensor::get_temp_raw_data(sensor_data,
&mut rawtempdata)
};
{
match (&(rc), &(0)) {
(left_val, right_val) => {
if !(*left_val == *right_val) {
{
::core::panicking::panic_fmt(::core::fmt::Arguments::new_v1(&["assertion failed: `(left == right)`\n left: `",
"`,\n right: `",
"`: "],
&match (&&*left_val,
&&*right_val,
&::core::fmt::Arguments::new_v1(&["rawtmp fail"],
&match ()
{
()
=>
[],
}))
{
(arg0,
arg1,
arg2)
=>
[::core::fmt::ArgumentV1::new(arg0,
::core::fmt::Debug::fmt),
::core::fmt::ArgumentV1::new(arg1,
::core::fmt::Debug::fmt),
::core::fmt::ArgumentV1::new(arg2,
::core::fmt::Display::fmt)],
}),
&("rust/app/src/app_sensor.rs",
117u32,
17u32))
}
}
}
}
};
{
match (&(rawtempdata.strd_temp_raw_is_valid),
&(0)) {
(left_val, right_val) => {
if *left_val == *right_val {
{
::core::panicking::panic_fmt(::core::fmt::Arguments::new_v1(&["assertion failed: `(left != right)`\n left: `",
"`,\n right: `",
"`: "],
&match (&&*left_val,
&&*right_val,
&::core::fmt::Arguments::new_v1(&["bad rawtmp"],
&match ()
{
()
=>
[],
}))
{
(arg0,
arg1,
arg2)
=>
[::core::fmt::ArgumentV1::new(arg0,
::core::fmt::Debug::fmt),
::core::fmt::ArgumentV1::new(arg1,
::core::fmt::Debug::fmt),
::core::fmt::ArgumentV1::new(arg2,
::core::fmt::Display::fmt)],
}),
&("rust/app/src/app_sensor.rs",
119u32,
17u32))
}
}
}
}
};
SensorValueType::Uint(rawtempdata.strd_temp_raw)
}
},}
}
}
mod app_network {
//! Transmit sensor data to a CoAP server like thethings.io. The CoAP payload will be encoded as JSON.
//! The sensor data will be transmitted over NB-IoT.
//! Note that we are using a patched version of apps/my_sensor_app/src/vsscanf.c that
//! fixes response parsing bugs. The patched file must be present in that location.
//! This is the Rust version of `https://github.com/lupyuen/stm32bluepill-mynewt-sensor/blob/rust-nbiot/apps/my_sensor_app/OLDsrc/network.c`
use mynewt::{result::*, hw::sensor::{SensorValue, SensorValueType},
sys::console, encoding::coap_context::*,
libs::{sensor_network}, coap, d, Strn};
use mynewt_macros::strn;
/// Compose a CoAP JSON message with the Sensor Key (field name) and Value in `val`
/// and send to the CoAP server. The message will be enqueued for transmission by the CoAP / OIC
/// Background Task so this function will return without waiting for the message to be transmitted.
/// Return `Ok()` if successful, `SYS_EAGAIN` if network is not ready yet.
/// For the CoAP server hosted at thethings.io, the CoAP payload should be encoded in JSON like this:
/// ```json
/// {"values":[
/// {"key":"device", "value":"0102030405060708090a0b0c0d0e0f10"},
/// {"key":"t", "value":1715}
/// ]}
/// ```
pub fn send_sensor_data(val: &SensorValue) -> MynewtResult<()> {
console::print("Rust send_sensor_data\n");
let device_id = sensor_network::get_device_id()?;
let rc = sensor_network::init_server_post(&Strn::new(b"\0"))?;
if !rc { return Err(MynewtError::SYS_EAGAIN); }
let _payload =
{
"begin json root";
{
"begin json coap_root";
unsafe {
mynewt::libs::sensor_network::prepare_post(mynewt::encoding::APPLICATION_JSON)?;
}
unsafe {
mynewt::libs::sensor_coap::json_rep_start_root_object();
}
{
{
"begin json coap_array , object : COAP_CONTEXT , key : values";
{
"<< jarri , o: COAP_CONTEXT, k: values";
let key_with_null: &str = "values\u{0}";
unsafe {
mynewt::libs::mynewt_rust::json_helper_set_array(COAP_CONTEXT.to_void_ptr(),
COAP_CONTEXT.key_to_cstr(key_with_null.as_bytes()));
};
};
{
" >> >> \"device\" >> : & device_id , val ,";
"add1 key : \"device\" value : $crate::parse!(@ json &device_id) to object :\nCOAP_CONTEXT";
{
"begin json coap_item_str , parent : COAP_CONTEXT , key : \"device\" , val :\n$crate::parse!(@ json &device_id)";
{
"begin json coap_item , array : COAP_CONTEXT";
{
"<< jitmi c: COAP_CONTEXT";
let key_with_null: &str =
"COAP_CONTEXT\u{0}";
unsafe {
mynewt::libs::mynewt_rust::json_helper_object_array_start_item(COAP_CONTEXT.key_to_cstr(key_with_null.as_bytes()))
};
};
{
{
"-- jtxti o: COAP_CONTEXT, k: key, v: \"device\"";
let key_strn: &Strn =
&Strn::new(b"key\x00");
let value_strn: &Strn =
&Strn::new(b"device\x00");
unsafe {
COAP_CONTEXT.json_set_text_string(key_strn,
value_strn)
};
};
{
"-- jtxti o: COAP_CONTEXT, k: value, v: $crate::parse!(@ json &device_id)";
let key_strn: &Strn =
&Strn::new(b"value\x00");
let value_strn: &Strn =
&device_id;
unsafe {
COAP_CONTEXT.json_set_text_string(key_strn,
value_strn)
};
};
};
{
">>";
let key_with_null: &str =
"COAP_CONTEXT\u{0}";
unsafe {
mynewt::libs::mynewt_rust::json_helper_object_array_end_item(COAP_CONTEXT.key_to_cstr(key_with_null.as_bytes()))
};
};
"end json coap_item";
};
"end json coap_item_str";
};
"--------------------";
" >> >> val >> ,";
"--------------------";
{
"begin json coap_item_int_val , c : COAP_CONTEXT , val : val";
if let SensorValueType::Uint(val) =
val.val {
{
"begin json coap_item_int , key : val.key , value : val";
{
"begin json coap_item , array : COAP_CONTEXT";
{
"<< jitmi c: COAP_CONTEXT";
let key_with_null: &str =
"COAP_CONTEXT\u{0}";
unsafe {
mynewt::libs::mynewt_rust::json_helper_object_array_start_item(COAP_CONTEXT.key_to_cstr(key_with_null.as_bytes()))
};
};
{
{
"-- jtxte o: COAP_CONTEXT, k: \"key\", v: val.key";
let key_with_opt_null:
&[u8] =
"key".to_bytes_optional_nul();
let value_with_opt_null:
&[u8] =
val.key.to_bytes_optional_nul();
unsafe {
mynewt::libs::mynewt_rust::json_helper_set_text_string(COAP_CONTEXT.to_void_ptr(),
COAP_CONTEXT.key_to_cstr(key_with_opt_null),
COAP_CONTEXT.value_to_cstr(value_with_opt_null))
};
};
{
"-- jinte o: COAP_CONTEXT, k: \"value\", v: val";
let key_with_opt_null:
&[u8] =
"value".to_bytes_optional_nul();
let value =
val as u64;
unsafe {
mynewt::libs::mynewt_rust::json_helper_set_int(COAP_CONTEXT.to_void_ptr(),
COAP_CONTEXT.key_to_cstr(key_with_opt_null),
value)
};
};
};
{
">>";
let key_with_null: &str =
"COAP_CONTEXT\u{0}";
unsafe {
mynewt::libs::mynewt_rust::json_helper_object_array_end_item(COAP_CONTEXT.key_to_cstr(key_with_null.as_bytes()))
};
};
"end json coap_item";
};
"end json coap_item_int";
};
} else {
unsafe {
COAP_CONTEXT.fail(CoapError::VALUE_NOT_UINT)
};
}
"end json coap_item_int_val";
};
"--------------------";
};
{
">>";
let key_with_null: &str = "values\u{0}";
unsafe {
mynewt::libs::mynewt_rust::json_helper_close_array(COAP_CONTEXT.to_void_ptr(),
COAP_CONTEXT.key_to_cstr(key_with_null.as_bytes()))
};
};
"end json coap_array";
};
};
unsafe {
mynewt::libs::sensor_coap::json_rep_end_root_object();
}
"end json coap_root";
};
"end json root";
()
};
sensor_network::do_server_post()?;
console::print("NET view your sensor at \nhttps://blue-pill-geolocate.appspot.com?device=");
console::print_strn(&device_id);
console::print("\n");
Ok(())
}
}
use core::panic::PanicInfo;
use cortex_m::asm::bkpt;
use mynewt::{kernel::os, sys::console, libs::sensor_network};
/// Main program that initialises the sensor, network driver and starts reading and sending sensor data in the background.
/// main() will be called at Mynewt startup. It replaces the C version of the main() function.
#[no_mangle]
extern "C" fn main() -> ! {
mynewt::sysinit();
app_sensor::start_sensor_listener().expect("TMP fail");
sensor_network::start_server_transport().expect("NET fail");
loop {
os::eventq_run(os::eventq_dflt_get().expect("GET fail")).expect("RUN fail");
}
}
/// This function is called on panic, like an assertion failure. We display the filename and line number and pause in the debugger. From https://os.phil-opp.com/freestanding-rust-binary/
#[panic_handler]
fn panic(info: &PanicInfo) -> ! {
console::print("panic ");
if let Some(location) = info.location() {
let file = location.file();
let line = location.line();
console::print("at ");
console::buffer(&file);
console::print(" line 0x");
console::printhex(line as u8);
console::print("\n");
console::flush();
} else { console::print("no loc\n"); console::flush(); }
bkpt();
loop { }
}