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Rust on ESP32 STD demo app

A demo STD binary crate for the ESP32[XX] and ESP-IDF, which connects to WiFi, Ethernet, drives a small HTTP server and draws on a LED screen.

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Important Update

This GH repository is now deprecated, because all of the functionalities it demonstrates (and more!) are available in the form of examples/ directly in the esp-idf-sys/esp-idf-hal/esp-idf-svc crates (see below).

To easily generate a "Hello, world!" binary crate for Espressif MCUs with ESP-IDF, use the esp-idf-template.

Examples:

The repository might also be archived soon.

Highlights:

Build

QEMU

Flash

NOTE: The above commands do use espflash and NOT cargo espflash, even though both can be installed via Cargo. cargo espflash is essentially espflash but it has some extra superpowers, like the capability to build the project before flashing, or to generate an ESP32 .BIN file from the built .ELF image.

Alternative flashing

Monitor

Hello, world from Rust!
More complex print [foo, bar]
Rust main thread: ...
This is thread number 0 ...
This is thread number 1 ...
This is thread number 2 ...
This is thread number 3 ...
This is thread number 4 ...
About to join the threads. If ESP-IDF was patched successfully, joining will NOT crash
Joins were successful.
I (4761) wifi:wifi driver task: 3ffc1d80, prio:23, stack:6656, core=0
I (4761) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (4761) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE
I (4771) wifi:wifi firmware version: 3ea4c76
I (4771) wifi:config NVS flash: disabled
I (4781) wifi:config nano formating: disabled
I (4781) wifi:Init dynamic tx buffer num: 32
I (4791) wifi:Init data frame dynamic rx buffer num: 32
I (4791) wifi:Init management frame dynamic rx buffer num: 32
I (4801) wifi:Init management short buffer num: 32
I (4801) wifi:Init static rx buffer size: 1600
I (4811) wifi:Init static rx buffer num: 10
I (4811) wifi:Init dynamic rx buffer num: 32
I (4811) esp_idf_svc::wifi: Driver initialized
I (4821) esp_idf_svc::wifi: Event handlers registered
I (4821) esp_idf_svc::wifi: Initialization complete
I (4831) rust_esp32_std_demo: Wifi created
I (4831) esp_idf_svc::wifi: Setting configuration: Client(ClientConfiguration { ssid: "<your-ssid>", bssid: None, auth_method: WPA2Personal, password: "<your-pass>", ip_conf: Some(DHCP) })
I (4851) esp_idf_svc::wifi: Stopping
I (4861) esp_idf_svc::wifi: Disconnect requested
I (4861) esp_idf_svc::wifi: Stop requested
I (4871) esp_idf_svc::wifi: About to wait for status
I (4871) esp_idf_svc::wifi: Providing status: Status(Stopped, Stopped)
I (4881) esp_idf_svc::wifi: Waiting for status done - success
I (4881) esp_idf_svc::wifi: Stopped
I (4891) esp_idf_svc::wifi: Wifi mode STA set
I (4891) esp_idf_svc::wifi: Setting STA configuration: ClientConfiguration { ssid: "<your-ssid>", bssid: None, auth_method: WPA2Personal, password: "<your-pass>", ip_conf: Some(DHCP) }
I (4911) esp_idf_svc::wifi: Setting STA IP configuration: DHCP
I (4921) esp_idf_svc::wifi: STA netif allocated: 0x3ffc685c
I (4921) esp_idf_svc::wifi: STA IP configuration done
I (4931) esp_idf_svc::wifi: STA configuration done
I (4931) esp_idf_svc::wifi: Starting with status: Status(Starting, Stopped)
I (4941) esp_idf_svc::wifi: Status is of operating type, starting
I (5041) phy: phy_version: 4180, cb3948e, Sep 12 2019, 16:39:13, 0, 0
I (5041) wifi:mode : sta (f0:08:d1:77:68:f0)
I (5041) esp_idf_svc::wifi: Got wifi event: 2
I (5051) esp_idf_svc::wifi: Recconecting
I (5051) esp_idf_svc::wifi: Start requested
I (5051) esp_idf_svc::wifi: Set status: Status(Started(Connecting), Stopped)
I (5061) esp_idf_svc::wifi: About to wait for status with timeout 10s
I (5071) esp_idf_svc::wifi: Wifi event 2 handled
I (5091) esp_idf_svc::wifi: Providing status: Status(Started(Connecting), Stopped)
I (5171) wifi:new:<1,1>, old:<1,0>, ap:<255,255>, sta:<1,1>, prof:1
I (5941) wifi:state: init -> auth (b0)
I (5951) esp_idf_svc::wifi: Providing status: Status(Started(Connecting), Stopped)
I (5951) wifi:state: auth -> assoc (0)
I (5961) wifi:state: assoc -> run (10)
I (5981) wifi:connected with muci, aid = 1, channel 1, 40U, bssid = 08:55:31:2e:c3:cf
I (5981) wifi:security: WPA2-PSK, phy: bgn, rssi: -54
I (5981) wifi:pm start, type: 1

I (5991) esp_idf_svc::wifi: Got wifi event: 4
I (5991) esp_idf_svc::wifi: Set status: Status(Started(Connected(Waiting)), Stopped)
I (6001) esp_idf_svc::wifi: Wifi event 4 handled
I (6011) wifi:AP's beacon interval = 102400 us, DTIM period = 1
I (6451) esp_idf_svc::wifi: Providing status: Status(Started(Connected(Waiting)), Stopped)
I (6951) esp_idf_svc::wifi: Providing status: Status(Started(Connected(Waiting)), Stopped)
I (7451) esp_idf_svc::wifi: Providing status: Status(Started(Connected(Waiting)), Stopped)
I (7951) esp_idf_svc::wifi: Providing status: Status(Started(Connected(Waiting)), Stopped)
I (8221) esp_idf_svc::wifi: Got IP event: 0
I (8221) esp_idf_svc::wifi: Set status: Status(Started(Connected(Done(ClientSettings { ip: 192.168.10.155, subnet: Subnet { gateway: 192.168.10.1, mask: Mask(24) }, dns: None, secondary_dns: None }))), Stopped)
I (8231) esp_idf_svc::wifi: IP event 0 handled
I (8241) esp_netif_handlers: staSTA netif allocated:  ip: 192.168.10.155, mask: 255.255.255.0, gw: 192.168.10.1
I (8451) esp_idf_svc::wifi: Providing status: Status(Started(Connected(Done(ClientSettings { ip: 192.168.10.155, subnet: Subnet { gateway: 192.168.10.1, mask: Mask(24) }, dns: None, secondary_dns: None }))), Stopped)
I (8461) esp_idf_svc::wifi: Waiting for status done - success
I (8461) esp_idf_svc::wifi: Started
I (8471) esp_idf_svc::wifi: Configuration set
I (8471) rust_esp32_std_demo: Wifi configuration set, about to get status
I (8481) esp_idf_svc::wifi: Providing status: Status(Started(Connected(Done(ClientSettings { ip: 192.168.10.155, subnet: Subnet { gateway: 192.168.10.1, mask: Mask(24) }, dns: None, secondary_dns: None }))), Stopped)
I (8501) rust_esp32_std_demo: Wifi connected, about to do some pings
I (8511) esp_idf_svc::ping: About to run a summary ping 192.168.10.1 with configuration Configuration { count: 5, interval: 1s, timeout: 1s, data_size: 56, tos: 0 }
I (8521) esp_idf_svc::ping: Ping session established, got handle 0x3ffc767c
I (8531) esp_idf_svc::ping: Ping session started
I (8531) esp_idf_svc::ping: Waiting for the ping session to complete
I (8541) esp_idf_svc::ping: Ping success callback invoked
I (8551) esp_idf_svc::ping: From 192.168.10.1 icmp_seq=1 ttl=64 time=14ms bytes=64
I (9531) esp_idf_svc::ping: Ping success callback invoked
I (9531) esp_idf_svc::ping: From 192.168.10.1 icmp_seq=2 ttl=64 time=1ms bytes=64
I (10531) esp_idf_svc::ping: Ping success callback invoked
I (10531) esp_idf_svc::ping: From 192.168.10.1 icmp_seq=3 ttl=64 time=2ms bytes=64
I (11531) esp_idf_svc::ping: Ping success callback invoked
I (11531) esp_idf_svc::ping: From 192.168.10.1 icmp_seq=4 ttl=64 time=0ms bytes=64
I (12531) esp_idf_svc::ping: Ping success callback invoked
I (12531) esp_idf_svc::ping: From 192.168.10.1 icmp_seq=5 ttl=64 time=1ms bytes=64
I (13531) esp_idf_svc::ping: Ping end callback invoked
I (13531) esp_idf_svc::ping: 5 packets transmitted, 5 received, time 18ms
I (13531) esp_idf_svc::ping: Ping session stopped
I (13531) esp_idf_svc::ping: Ping session 0x3ffc767c removed
I (13541) rust_esp32_std_demo: Pinging done
I (13551) esp_idf_svc::httpd: Started Httpd IDF server with config Configuration { http_port: 80, https_port: 443 }
I (13561) esp_idf_svc::httpd: Registered Httpd IDF server handler Get for URI "/"
I (13561) esp_idf_svc::httpd: Registered Httpd IDF server handler Get for URI "/foo"
I (13571) esp_idf_svc::httpd: Registered Httpd IDF server handler Get for URI "/bar"