starting with library and measurment implementation

Cargo.lock

@@ -46,14 +46,18 @@ dependencies = [
  "ch32-metapac 0.0.6",
  "embassy-executor",
  "embassy-futures",
+ "embassy-sync 0.7.2",
  "embassy-time 0.4.0",
  "embassy-usb",
  "embedded-hal 1.0.0",
  "heapless",
+ "ina219",
+ "lib-bms-protocol",
  "micromath",
  "panic-halt",
  "qingke",
  "qingke-rt",
+ "thiserror",
 ]
 
 [[package]]
@@ -518,6 +522,16 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b9e0384b61958566e926dc50660321d12159025e767c18e043daf26b70104c39"
 
+[[package]]
+name = "ina219"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "457a68120d2d0f0ca1b5c7f8e0ff3f77db9e34b1076a4e82f7097cbde7d2aaa4"
+dependencies = [
+ "embedded-hal 1.0.0",
+ "embedded-hal-async",
+]
+
 [[package]]
 name = "lib-bms-protocol"
 version = "0.1.0"
@@ -804,6 +818,26 @@ dependencies = [
  "unicode-ident",
 ]
 
+[[package]]
+name = "thiserror"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f63587ca0f12b72a0600bcba1d40081f830876000bb46dd2337a3051618f4fc8"
+dependencies = [
+ "thiserror-impl",
+]
+
+[[package]]
+name = "thiserror-impl"
+version = "2.0.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ff15c8ecd7de3849db632e14d18d2571fa09dfc5ed93479bc4485c7a517c913"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.111",
+]
+
 [[package]]
 name = "unicode-ident"
 version = "1.0.22"