working threads with mpsc::channel

sdkconfig.defaults

@@ -1,5 +1,5 @@
 # Rust often needs a bit of an extra main task stack size compared to C (the default is 3K)
-CONFIG_ESP_MAIN_TASK_STACK_SIZE=17000
+CONFIG_ESP_MAIN_TASK_STACK_SIZE=64000
 
 # Use this to set FreeRTOS kernel tick frequency to 1000 Hz (100 Hz by default).
 # This allows to use 1 ms granuality for thread sleeps (10 ms by default).

src/accel.rs

@@ -0,0 +1,17 @@
+use anyhow;
+
+use std::sync::mpsc::SyncSender;
+use std::thread;
+use std::time::Duration;
+
+use crate::modem::Msg;
+
+pub fn main(sender: SyncSender<Msg>) -> Result<(), anyhow::Error> {
+    println!("entering ACCELERATOR sender loop ...");
+    for i in 0..20 {
+        println!("sending ACCELERATOR message ({}) of 20 ...", i);
+        let _ = sender.send(Msg::Location("{\"velocity\": 21.43, \"altitude\": 367}".to_string()))?;
+        thread::sleep(Duration::from_millis(2000));
+    }
+    Ok(())
+}

src/gps.rs

@@ -0,0 +1,17 @@
+use anyhow;
+
+use std::sync::mpsc::SyncSender;
+use std::thread;
+use std::time::Duration;
+
+use crate::modem::Msg;
+
+pub fn main(sender: SyncSender<Msg>) -> Result<(), anyhow::Error> {
+    println!("entering GPS sender loop ...");
+    for i in 0..20 {
+        println!("sending GPS message ({}) of 20 ...", i);
+        let _ = sender.send(Msg::Location("{\"lat\": 20.4322, \"long\": 44.5432}".to_string()))?;
+        thread::sleep(Duration::from_millis(2000));
+    }
+    Ok(())
+}

src/main.rs

@@ -1,18 +1,20 @@
+mod accel;
 mod config;
+mod gps;
 mod modem;
 #[allow(dead_code)]
 mod command;
 
 use anyhow;
+use std::thread::{self, JoinHandle};
+use std::cell::RefCell;
 use std::time::Duration;
-use std::thread;
-use esp_idf_hal::prelude::*;
-use esp_idf_hal::peripherals::Peripherals;
-use esp_idf_hal::serial;
 
-use mqtt::control::ConnectReturnCode;
+use esp_idf_hal::peripherals::Peripherals;
-use mqtt::packet::{ConnackPacket, ConnectPacket, PublishPacket, QoSWithPacketIdentifier};
+
-use mqtt::{Decodable, Encodable, TopicName};
+thread_local! {
+    static TLS: RefCell<u32> = RefCell::new(13);
+}
 
 
 fn main() -> anyhow::Result<()> {
@@ -20,116 +22,43 @@ fn main() -> anyhow::Result<()> {
 
     let dp = Peripherals::take().expect("error taking peripherals");
 
+    println!("Rust main thread: {:?}", thread::current());
+
     // LilyGo TTGO T-Call sim800l board serial pins.
-    let serial_rx = dp.pins.gpio26;
+    let modem_rx = dp.pins.gpio26;
-    let serial_tx = dp.pins.gpio27;
+    let modem_tx = dp.pins.gpio27;
-
+    // LilyGo TTGO T-Call sim800l board power / reset pins.
-    let serial_pins = serial::Pins {
-        tx: serial_tx,
-        rx: serial_rx,
-        cts: None,
-        rts: None,
-    };
-
-    // Create the serial and panic with a message ... if we can't create the serial port, then we
-    // can't communicate with the sim800l module, hence we don't run anymore.
-    let serial: serial::Serial<serial::UART1, _, _> = serial::Serial::new(
-        dp.uart1,
-        serial_pins,
-        serial::config::Config::default().baudrate(Hertz(115200)),
-    )?;
-
-    let (tx, rx) = serial.split();
-    let mut mdm = modem::Modem::new(tx, rx);
-
     let modem_pwrkey = dp.pins.gpio4.into_output()?;
     let modem_rst = dp.pins.gpio5.into_output()?;
     let modem_power = dp.pins.gpio23.into_output()?;
+    // UART interface for the GSM modem
+    let modem_uart = dp.uart1;
 
-    mdm.init(modem_pwrkey, modem_rst, modem_power)?;
+    let mut threads: Vec<JoinHandle<anyhow::Result<_>>> = vec![];
 
-    if !mdm.is_gprs_attached()? {
+    println!("Rust main thread: {:?}", thread::current());
-        let _ = mdm.gprs_attach_ap(
-            config::A1_GPRS_AP.apn,
-            config::A1_GPRS_AP.username,
-            config::A1_GPRS_AP.password,
-        )?;
-    }
 
-    thread::sleep(Duration::from_millis(2000));
 
-    //println!("setting up client TLS cert");
+    TLS.with(|tls| {
-    //let client_cert = include_bytes!("../certs/full-bin.p12");
+        println!("Main TLS before change: {}", *tls.borrow());
-    //let client_cert_path = "C:\\USER\\fullchain.pem";
+    });
 
-    //let _ = mdm.upload_cert(client_cert_path, client_cert)?;
+    TLS.with(|tls| *tls.borrow_mut() = 42);
-    //let _ = mdm.ssl_set_client_cert(client_cert_path, "t")?;
-    //let _ = mdm.fs_list("C:\\USER\\")?;
 
-    loop {
+    TLS.with(|tls| {
-        if mdm.is_gprs_attached()? {
+        println!("Main TLS after change: {}", *tls.borrow());
-            let _ = mdm.gprs_connect()?;
+    });
-            for _ in 0..3 {
-                let ip_addr = mdm.gprs_status()?;
-                if ip_addr.contains("0.0.0.0") {
-                    thread::sleep(Duration::from_millis(2000));
-                } else {
-                    break
-                }
-            }
 
-            //println!("connecting to server!");
+    let (gps_sender, receiver) = std::sync::mpsc::sync_channel::<modem::Msg>(1);
-            //if !mdm.tcp_is_ssl_enabled()? {
-            //    let _ = mdm.tcp_ssl_enable()?;
-            //}
-            if mdm.tcp_is_ssl_enabled()? {
-                let _ = mdm.tcp_ssl_disable()?;
-            }
 
-            let client_id = "c36a72df-5bd6-4f9b-995d-059433bc3267";
+    let accel_sender = gps_sender.clone();
-            let message = "{\"lat\": 20.475370, \"long\": 44.747224}";
 
-            let _ = mdm.tcp_set_quick_mode(false);
+    threads.push(thread::spawn(move || gps::main(gps_sender)));
-            let _ = mdm.tcp_set_manual_receive(true);
+    thread::sleep(Duration::from_millis(1000));
+    threads.push(thread::spawn(move || accel::main(accel_sender)));
+    thread::sleep(Duration::from_millis(1000));
 
-            let _ = mdm.tcp_connect("51.158.66.64", 1883)?;
+    let _ = modem::main(modem_rx, modem_tx, modem_uart, modem_pwrkey, modem_rst, modem_power, receiver)?;
-
-            let mut buf = Vec::new();
-
-            let mut conn = ConnectPacket::new(client_id);
-            conn.set_clean_session(true);
-            conn.set_keep_alive(0);
-            let _ = conn.encode(&mut buf)?;
-            let _ = mdm.tcp_send(&mut buf)?;
-            buf.clear();
-
-            thread::sleep(Duration::from_millis(1000));
-
-            let size = mdm.tcp_receive_reply_len()?;
-            let mut reply = vec![0 as u8; size];
-            let _ = mdm.tcp_receive(&mut reply);
-            println!("TCP Received: {}", reply.iter().map(|b| char::from(*b)).collect::<String>());
-
-            println!("sending publish packet");
-            let packet = PublishPacket::new(
-                TopicName::new("bajsevi/test").unwrap(),
-                QoSWithPacketIdentifier::Level0,
-                message.as_bytes(),
-            );
-            let _ = packet.encode(&mut buf)?;
-            let _ = mdm.tcp_send(&mut buf)?;
-            buf.clear();
-
-            let size = mdm.tcp_receive_reply_len()?;
-            let mut reply = vec![0 as u8; size];
-            let _ = mdm.tcp_receive(&mut reply);
-            println!("TCP Received: {}", reply.iter().map(|b| char::from(*b)).collect::<String>());
-
-            let _ = mdm.tcp_close_connection()?;
-
-            break
-        }
-    }
 
     Ok(())
 }

src/modem.rs

@@ -1,12 +1,19 @@
 use crate::command::Command;
 
+use anyhow;
 use std::thread;
 use std::error::Error;
 use std::time::{Duration, Instant};
+use std::sync::mpsc::Receiver;
+
+use esp_idf_hal::prelude::*;
+use esp_idf_hal::serial::{self, Rx, Tx};
 
 use embedded_hal::serial::{Read, Write};
 use embedded_hal::digital::v2::OutputPin;
-use esp_idf_hal::serial::{self, Rx, Tx};
+
+use mqtt::packet::{ConnectPacket, PublishPacket, QoSWithPacketIdentifier};
+use mqtt::{Encodable, TopicName};
 
 const MAX_TCP_MANUAL_REPLY_SIZE: usize = 300;
 
@@ -395,4 +402,150 @@ impl<UART: serial::Uart> Modem<UART> {
         let _ = self.send_command(Command::ssl_set_root_cert(path, filesize))?;
         Ok(())
     }
+
+    fn mqtt_receive_reply(&mut self)  -> std::result::Result<(), anyhow::Error> {
+        println!("entered receiving modem reply ...");
+        let size = self.tcp_receive_reply_len()?;
+        println!("receiving reply len({}) ...", size);
+        let mut reply = vec![0 as u8; size];
+        println!("receiving tcp reply ...");
+        let _ = self.tcp_receive(&mut reply);
+        println!("received tcp reply ...");
+        Ok(())
+    }
+
+    fn mqtt_connect(&mut self, device_id: &str) -> std::result::Result<(), anyhow::Error> {
+        let mut buf = Vec::new();
+        let mut conn = ConnectPacket::new(device_id);
+        conn.set_clean_session(true);
+        conn.set_keep_alive(0);
+        let _ = conn.encode(&mut buf)?;
+        let _ = self.tcp_send(&mut buf)?;
+
+        thread::sleep(Duration::from_millis(2000));
+        drop(buf);
+
+        let _ = self.mqtt_receive_reply()?;
+        Ok(())
+    }
+
+    fn mqtt_publish(&mut self, _device_id: &str, message: &str) -> std::result::Result<(), anyhow::Error> {
+        println!("entered mqtt publish ...");
+        let mut buf = Vec::new();
+        let packet = PublishPacket::new(
+            TopicName::new(format!("bajsevi/location")).unwrap(),
+            QoSWithPacketIdentifier::Level0,
+            message.as_bytes(),
+        );
+        println!("created mqtt publish packet ...");
+        let _ = packet.encode(&mut buf)?;
+        println!("modem tcp send publish pakage ...");
+        let _ = self.tcp_send(&mut buf)?;
+
+        thread::sleep(Duration::from_millis(2000));
+        drop(buf);
+
+        println!("receiving modem publish reply ...");
+        let _ = self.mqtt_receive_reply()?;
+        Ok(())
+    }
+}
+
+pub enum Msg {
+    Location(String),
+//    Movement(String),
+}
+
+pub fn main<T: Sync + Send>(
+    rx: esp_idf_hal::gpio::Gpio26<T>,
+    tx: esp_idf_hal::gpio::Gpio27<T>,
+    uart: serial::UART1,
+    pwrkey: esp_idf_hal::gpio::Gpio4<esp_idf_hal::gpio::Output>,
+    rst: esp_idf_hal::gpio::Gpio5<esp_idf_hal::gpio::Output>,
+    power: esp_idf_hal::gpio::Gpio23<esp_idf_hal::gpio::Output>,
+    receiver: Receiver<Msg>,
+) -> std::result::Result<(), anyhow::Error> {
+    let serial_pins = serial::Pins {
+        tx,
+        rx,
+        cts: None,
+        rts: None,
+    };
+
+    // Create the serial and panic with a message ... if we can't create the serial port, then we
+    // can't communicate with the sim800l module, hence we don't run anymore.
+    let serial: serial::Serial<serial::UART1, _, _> = serial::Serial::new(
+        uart,
+        serial_pins,
+        serial::config::Config::default().baudrate(Hertz(115200)),
+    )?;
+
+    let (tx, rx) = serial.split();
+    let mut mdm = Modem::new(tx, rx);
+
+    mdm.init(pwrkey, rst, power)?;
+
+    if !mdm.is_gprs_attached()? {
+        let _ = mdm.gprs_attach_ap(
+            crate::config::A1_GPRS_AP.apn,
+            crate::config::A1_GPRS_AP.username,
+            crate::config::A1_GPRS_AP.password,
+        )?;
+    }
+
+    thread::sleep(Duration::from_millis(1000));
+
+    //println!("setting up client TLS cert");
+    //let client_cert = include_bytes!("../certs/full-bin.p12");
+    //let client_cert_path = "C:\\USER\\fullchain.pem";
+
+    //let _ = mdm.upload_cert(client_cert_path, client_cert)?;
+    //let _ = mdm.ssl_set_client_cert(client_cert_path, "t")?;
+    //let _ = mdm.fs_list("C:\\USER\\")?;
+
+    let mut retries = 0;
+    let is_connected: bool = loop {
+        if mdm.is_gprs_attached()? {
+            let _ = mdm.gprs_connect()?;
+            thread::sleep(Duration::from_millis(1000));
+            let ip_addr = mdm.gprs_status()?;
+            if ip_addr.contains("0.0.0.0") && retries < 5 {
+                thread::sleep(Duration::from_millis(1000));
+                retries += 1;
+                continue
+            } else if retries < 5 {
+                break true
+            } else {
+                break false
+            }
+        }
+    };
+
+    if is_connected {
+        //println!("connecting to server!");
+        //if !mdm.tcp_is_ssl_enabled()? {
+        //    let _ = mdm.tcp_ssl_enable()?;
+        //}
+        //if mdm.tcp_is_ssl_enabled()? {
+        //    let _ = mdm.tcp_ssl_disable()?;
+        //}
+        let device_id = "c36a72df-5bd6-4f9b-995d-059433bc3267";
+
+        let _ = mdm.tcp_set_quick_mode(false);
+        let _ = mdm.tcp_set_manual_receive(true);
+        let _ = mdm.tcp_connect("51.158.66.64", 1883)?;
+
+        let _ = mdm.mqtt_connect(device_id)?;
+
+        println!("entering queue receive loop ...");
+        while let Ok(Msg::Location(msg)) = receiver.recv() {
+            println!("received message {} | sending to mqtt ...", msg);
+            let _ = mdm.mqtt_publish(device_id, &msg)?;
+        }
+
+
+        let _ = mdm.tcp_close_connection()?;
+    }
+
+    Ok(())
 }