add esp_hal_ota crate

and do the manual setup steps for it

.cargo/config.toml

@@ -1,5 +1,5 @@
 [target.riscv32imc-unknown-none-elf]
-runner = "espflash flash --monitor --chip esp32c3"
+runner = "espflash flash --erase-parts otadata --partition-table ./partitions.csv --monitor --chip esp32c3"
 
 [env]
 ESP_LOG="info"

Cargo.lock

@@ -308,6 +308,7 @@ dependencies = [
  "esp-backtrace",
  "esp-bootloader-esp-idf",
  "esp-hal",
+ "esp-hal-ota",
  "esp-println",
  "esp-radio",
  "esp-rtos",
@@ -710,6 +711,17 @@ dependencies = [
  "xtensa-lx-rt",
 ]
 
+[[package]]
+name = "esp-hal-ota"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b0f57c560af3fe8037ea9aadc094089703a5b6fdd808b7c68650125615d71a8e"
+dependencies = [
+ "embedded-storage",
+ "esp32c3",
+ "log",
+]
+
 [[package]]
 name = "esp-hal-procmacros"
 version = "0.21.0"

ecu-esp32/Cargo.toml

@@ -71,7 +71,9 @@ embassy-net = { version = "0.7.1", features = [
 dns-protocol = { version = "0.1.2", default-features = false, features = [
   # no "std" feature
 ] }
-
+esp-hal-ota = { version = "0.4.5", features = [
+  "esp32c3", "log"
+] }
 
 
 [profile.dev]

partitions.csv

@@ -0,0 +1,7 @@
+# https://github.com/filipton/esp-hal-ota/blob/master/partitions.csv.template
+# Name,   Type, SubType, Offset,  Size,      Flags
+nvs,      data, nvs,     0x9000,   0x4000,
+otadata,  data, ota,     0xd000,   0x2000,
+phy_init, data, phy,     0xf000,   0x1000,
+ota_0,    app,  ota_0,   0x10000,  0x100000,
+ota_1,    app,  ota_1,   0x110000, 0x100000,