use bitfield instead of strum

pn532/Cargo.toml

@@ -3,7 +3,6 @@ name = "pn532"
 version = "0.1.0"
 edition = "2024"
 description = "A no_std, embedded-hal driver for the NXP PN532 NFC controller (I2C interface)"
-license = "BSD-3-Clause"
 keywords = ["nfc", "pn532", "embedded-hal", "no-std", "i2c"]
 categories = ["embedded", "no-std", "hardware-support"]
 
@@ -20,9 +19,9 @@ defmt = { version = "~1.1", optional = true }
 hex = { version = "~0.4", default-features = false }
 des = { version = "~0.9", default-features = false }
 cbc = { version = "~0.2", default-features = false, features = ["block-padding"] }
-strum = { version = "0.28.0", default-features = false, features = ["derive", "strum_macros"] }
 heapless = "~0.9"
 thiserror = { version = "~2", default-features = false }
+bitfields = "3.1.0"
 
 [features]
 default = []
@@ -31,4 +30,4 @@ alloc = ["defmt/alloc", "hex/alloc", "heapless/alloc"]
 mifare-classic = []
 iso14443a = []
 felica = []
-felica-lite-s = ["felica"]
+felica-lite-s = ["felica"]