19 files changed, 329 insertions, 475 deletions
diff --git a/.cargo/config b/.cargo/config
new file mode 100644
index 0000000..cfc165f
--- /dev/null
+++ b/.cargo/config
@@ -0,0 +1,7 @@
+[target.thumbv7em-none-eabihf]
+rustflags = ["-C", "link-arg=-Tlink.x"]
+runner = "gdb-multiarch"
+
+[target.thumbv6m-none-eabi]
+rustflags = ["-C", "link-arg=-Tlink.x"]
+runner = "gdb-multiarch"
diff --git a/.gitignore b/.gitignore
index 0577f13..1acd378 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,5 +1,6 @@
 *.bin
 *.uf2
 */.gdb_history
+/target
 */target
 **/*.rs.bk
diff --git a/usb/Cargo.lock b/Cargo.lock
index 8bf4a7d..69b9f3c 100644
--- a/usb/Cargo.lock
+++ b/Cargo.lock
@@ -28,14 +28,17 @@ dependencies = [
 
 [[package]]
 name = "atsamd-hal"
-version = "0.6.0"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "atsamd21e18a 0.5.0",
+ "atsamd21e18a 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "atsamd21g18a 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "bitfield 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -44,16 +47,28 @@ dependencies = [
 name = "atsamd-usb-host"
 version = "0.1.0"
 dependencies = [
- "atsamd-hal 0.6.0",
+ "atsamd-hal 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "starb 0.2.0",
+ "starb 0.3.0",
  "usb-host 0.1.1",
 ]
 
 [[package]]
 name = "atsamd21e18a"
-version = "0.5.0"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bare-metal 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "atsamd21g18a"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "bare-metal 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
  "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -70,11 +85,41 @@ dependencies = [
 ]
 
 [[package]]
+name = "bbqueue"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "bitfield"
 version = "0.13.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "bitflags"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "ble"
+version = "0.1.0"
+dependencies = [
+ "bbqueue 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "clint 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m-semihosting 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nrf52840-hal 0.8.1",
+ "nrf52840-mdk-bsp 0.1.0",
+ "panic-semihosting 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rubble 0.0.3",
+ "rubble-nrf52 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "starb 0.3.0",
+]
+
+[[package]]
 name = "bootkbd"
 version = "0.2.0"
 dependencies = [
@@ -83,6 +128,16 @@ dependencies = [
 ]
 
 [[package]]
+name = "byteorder"
+version = "1.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "cast"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "cfg-if"
 version = "0.1.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -126,6 +181,14 @@ dependencies = [
 ]
 
 [[package]]
+name = "cortex-m-semihosting"
+version = "0.3.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "embedded-hal"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -135,6 +198,28 @@ dependencies = [
 ]
 
 [[package]]
+name = "feather_m0"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "atsamd-hal 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "panic-halt 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fpa"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "typenum 1.11.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "generic-array"
 version = "0.12.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -156,6 +241,65 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "nrf52-hal-common"
+version = "0.8.1"
+dependencies = [
+ "cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fpa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nrf52840-pac 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "nrf52840-hal"
+version = "0.8.1"
+dependencies = [
+ "cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "nrf52-hal-common 0.8.1",
+ "nrf52840-pac 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "nrf52840-mdk-bsp"
+version = "0.1.0"
+dependencies = [
+ "nrf52840-hal 0.8.1",
+]
+
+[[package]]
+name = "nrf52840-pac"
+version = "0.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bare-metal 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
+ "vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "panic-halt"
+version = "0.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "panic-semihosting"
+version = "0.5.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "cortex-m-semihosting 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
 name = "paste"
 version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -170,7 +314,7 @@ version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "proc-macro-hack 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -180,7 +324,7 @@ name = "proc-macro-hack"
 version = "0.5.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
@@ -195,7 +339,7 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.2"
+version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -214,7 +358,7 @@ name = "quote"
 version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -244,11 +388,35 @@ version = "0.4.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "rand_core"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "rgb"
 version = "0.8.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
+name = "rubble"
+version = "0.0.3"
+dependencies = [
+ "bbqueue 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rubble-nrf52"
+version = "0.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "nrf52840-hal 0.8.1",
+ "rubble 0.0.3",
+]
+
+[[package]]
 name = "rustc_version"
 version = "0.2.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -292,7 +460,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "starb"
-version = "0.2.0"
+version = "0.3.0"
 
 [[package]]
 name = "syn"
@@ -309,16 +477,17 @@ name = "syn"
 version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
  "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "trinket_m0"
-version = "0.4.0"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
- "atsamd-hal 0.6.0",
+ "atsamd-hal 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -351,12 +520,13 @@ dependencies = [
  "cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
  "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "feather_m0 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
  "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "smart-leds 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "smart-leds-trait 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "starb 0.2.0",
- "trinket_m0 0.4.0",
+ "starb 0.3.0",
+ "trinket_m0 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "usb-host 0.1.1",
 ]
 
@@ -365,6 +535,11 @@ name = "usb-host"
 version = "0.1.1"
 
 [[package]]
+name = "uuid"
+version = "0.7.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
 name = "vcell"
 version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
@@ -386,29 +561,44 @@ dependencies = [
 "checksum aligned 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d3a316c7ea8e1e9ece54862c992def5a7ac14de9f5832b69d71760680efeeefa"
 "checksum apa102-spi 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7db64ad01f91b1e4266786453db12b65aced7247bed5c6292ee77a7361f9718b"
 "checksum as-slice 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "293dac66b274fab06f95e7efb05ec439a6b70136081ea522d270bc351ae5bb27"
+"checksum atsamd-hal 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "51b17f505015d8f9594aaabed975a4bf44d790960d70e77d66c67f7bb7ff961d"
+"checksum atsamd21e18a 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fa1322ea4d23998e7894dacf34f587db0320d80b38c01bfb66339969f2592ef7"
+"checksum atsamd21g18a 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "a5486b991ab0012b18f749e0b4bd71d882b4d6134dd58a1c16b571cf2e3d40eb"
 "checksum bare-metal 0.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "5deb64efa5bd81e31fcd1938615a6d98c82eafcbcd787162b6f63b91d6bac5b3"
+"checksum bbqueue 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "fd19d1f2d21e6f6de95a61ea33bcfda30f30ac90ac3636d6d83a14baef4310f4"
 "checksum bitfield 0.13.2 (registry+https://github.com/rust-lang/crates.io-index)" = "46afbd2983a5d5a7bd740ccb198caf5b82f45c40c09c0eed36052d91cb92e719"
+"checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
+"checksum byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c3dd8985a7111efc5c80b44e23ecdd8c007de8ade3b96595387e812b957cf5"
+"checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
 "checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
 "checksum clint 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cf426ed438e61a9c2b9619fa8fda2ded21767e4fef8c13e5fc781b33487e9ec8"
 "checksum cortex-m 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "145da2fc379bbd378ed425e75e1748214add9bbd800d4d5b77abb54ca423dbca"
 "checksum cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "17805910e3ecf029bdbfcc42b7384d9e3d9e5626153fa810002c1ef9839338ac"
 "checksum cortex-m-rt-macros 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d7ae692573e0acccb1579fef1abf5a5bf1d2f3f0149a22b16870ec9309aee25f"
+"checksum cortex-m-semihosting 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "113ef0ecffee2b62b58f9380f4469099b30e9f9cbee2804771b4203ba1762cfa"
 "checksum embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ee4908a155094da7723c2d60d617b820061e3b4efcc3d9e293d206a5a76c170b"
+"checksum feather_m0 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05c88061f7a7d340ecadedf216cb1172eecac84cf209696c6a00239c398ea017"
+"checksum fpa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f074479d683e5a8fd0bf1251d0a5d91b0d9178b867b44962191ed0eaaf8d4009"
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
 "checksum nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b1411551beb3c11dedfb0a90a0fa256b47d28b9ec2cdff34c25a2fa59e45dbdc"
+"checksum nrf52840-pac 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e375b19eec5ae6c75387ea2fff3d5a6f989d65a0af350fcfe854f31243bfdfe2"
+"checksum panic-halt 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de96540e0ebde571dc55c73d60ef407c653844e6f9a1e2fdbd40c07b9252d812"
+"checksum panic-semihosting 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c03864ac862876c16a308f5286f4aa217f1a69ac45df87ad3cd2847f818a642c"
 "checksum paste 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "423a519e1c6e828f1e73b720f9d9ed2fa643dce8a7737fb43235ce0b41eeaa49"
 "checksum paste-impl 0.1.6 (registry+https://github.com/rust-lang/crates.io-index)" = "4214c9e912ef61bf42b81ba9a47e8aad1b2ffaf739ab162bf96d1e011f54e6c5"
 "checksum proc-macro-hack 0.5.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e688f31d92ffd7c1ddc57a1b4e6d773c0f2a14ee437a4b0a4f5a69c80eb221c8"
 "checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
-"checksum proc-macro2 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "175a40b9cf564ce9bf050654633dbf339978706b8ead1a907bb970b63185dd95"
+"checksum proc-macro2 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e98a83a9f9b331f54b924e68a66acb1bb35cb01fb0a23645139967abefb697e8"
 "checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
 "checksum quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "053a8c8bcc71fcce321828dc897a98ab9760bef03a4fc36693c231e5b3216cfe"
 "checksum r0 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2a38df5b15c8d5c7e8654189744d8e396bddc18ad48041a500ce52d6948941f"
 "checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
 "checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
 "checksum rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
+"checksum rand_core 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "90bde5296fc891b0cef12a6d03ddccc162ce7b2aff54160af9338f8d40df6d19"
 "checksum rgb 0.8.14 (registry+https://github.com/rust-lang/crates.io-index)" = "2089e4031214d129e201f8c3c8c2fe97cd7322478a0d1cdf78e7029b0042efdb"
+"checksum rubble-nrf52 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a5316700fe451281c7dd96b8769768c9fabe87bbd084f8ec507a142b76cff4f2"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
 "checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
@@ -417,9 +607,11 @@ dependencies = [
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
 "checksum syn 1.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "66850e97125af79138385e9b88339cbcd037e3f28ceab8c5ad98e64f0f1f80bf"
+"checksum trinket_m0 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ebc2347d143043a360cde2d4223515c728049bd05f57f362e0c86d6f1a17246"
 "checksum typenum 1.11.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6d2783fe2d6b8c1101136184eb41be8b1ad379e4657050b8aaff0c79ee7575f9"
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
+"checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
 "checksum vcell 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "876e32dcadfe563a4289e994f7cb391197f362b6315dc45e8ba4aa6f564a4b3c"
 "checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
 "checksum volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0d67cb4616d99b940db1d6bd28844ff97108b498a6ca850e5b6191a532063286"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..aa2710d
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,25 @@
+[workspace]
+members = ["usb", "ble"]
+
+[patch.crates-io]
+#atsamd-hal = { path = "../usbh/atsamd/hal" }
+#trinket_m0 = { path = "../usbh/atsamd/boards/trinket_m0" }
+#feather_m0 = { path = "../usbh/atsamd/boards/feather_m0" }
+rubble = { path = "../rubble/rubble" }
+nrf52840-hal = { path = "../nrf52-hal/nrf52840-hal" }
+bootkbd = { path = "../usbh/bootkbd" }
+usb-host = { path = "../usbh/usb-host" }
+starb = { path = "../usbh/starb" }
+
+[profile.dev]
+incremental = false
+codegen-units = 1
+debug = true
+lto = false
+panic = "abort"
+
+[profile.release]
+debug = true
+lto = true
+opt-level = "s"
+panic = 'abort'
diff --git a/ble/.cargo/config b/ble/.cargo/config
index c4ce5ef..5d10902 100644
--- a/ble/.cargo/config
+++ b/ble/.cargo/config
@@ -1,6 +1,2 @@
 [build]
 target = "thumbv7em-none-eabihf"
-
-[target.thumbv7em-none-eabihf]
-rustflags = ["-C", "link-arg=-Tlink.x"]
-runner = "gdb-multiarch"
diff --git a/ble/.gdbinit b/ble/.gdbinit
index 1f1606a..abfe67e 100644
--- a/ble/.gdbinit
+++ b/ble/.gdbinit
@@ -1,3 +1,7 @@
+define hook-quit
+  set confirm off
+end
+
 # print demangled symbols by default
 set print asm-demangle on
 
diff --git a/ble/Cargo.lock b/ble/Cargo.lock
deleted file mode 100644
index 3003e13..0000000
--- a/ble/Cargo.lock
+++ /dev/null
@@ -1,384 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "aligned"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "as-slice 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "as-slice"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "bare-metal"
-version = "0.2.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "bbqueue"
-version = "0.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "bitflags"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "ble"
-version = "0.1.0"
-dependencies = [
- "bbqueue 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "clint 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m-semihosting 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "nrf52840-hal 0.8.1",
- "nrf52840-mdk-bsp 0.1.0",
- "panic-semihosting 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "rubble 0.0.3",
- "rubble-nrf52 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "starb 0.2.0",
-]
-
-[[package]]
-name = "byteorder"
-version = "1.3.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "cast"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "cfg-if"
-version = "0.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "clint"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "cortex-m"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "aligned 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "bare-metal 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "cortex-m-rt"
-version = "0.6.10"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cortex-m-rt-macros 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
- "r0 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "cortex-m-rt-macros"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "cortex-m-semihosting"
-version = "0.3.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "embedded-hal"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "fpa"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "generic-array"
-version = "0.12.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "log"
-version = "0.4.8"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "nb"
-version = "0.1.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "nrf52-hal-common"
-version = "0.8.1"
-dependencies = [
- "cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "fpa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "nrf52840-pac 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "nrf52840-hal"
-version = "0.8.1"
-dependencies = [
- "cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
- "nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "nrf52-hal-common 0.8.1",
- "nrf52840-pac 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "nrf52840-mdk-bsp"
-version = "0.1.0"
-dependencies = [
- "nrf52840-hal 0.8.1",
-]
-
-[[package]]
-name = "nrf52840-pac"
-version = "0.8.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bare-metal 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "vcell 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "panic-semihosting"
-version = "0.5.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "cortex-m-semihosting 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "proc-macro2"
-version = "0.4.30"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "quote"
-version = "0.6.13"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "r0"
-version = "0.2.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "rand"
-version = "0.5.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "rand_core"
-version = "0.4.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "rubble"
-version = "0.0.3"
-dependencies = [
- "bbqueue 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "rubble-nrf52"
-version = "0.0.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "nrf52840-hal 0.8.1",
- "rubble 0.0.3",
-]
-
-[[package]]
-name = "rustc_version"
-version = "0.2.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "semver"
-version = "0.9.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "semver-parser"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "stable_deref_trait"
-version = "1.1.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "starb"
-version = "0.2.0"
-
-[[package]]
-name = "syn"
-version = "0.15.44"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)",
- "unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "typenum"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "unicode-xid"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "uuid"
-version = "0.7.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "vcell"
-version = "0.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "void"
-version = "1.0.2"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "volatile-register"
-version = "0.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "vcell 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[metadata]
-"checksum aligned 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d3a316c7ea8e1e9ece54862c992def5a7ac14de9f5832b69d71760680efeeefa"
-"checksum as-slice 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "293dac66b274fab06f95e7efb05ec439a6b70136081ea522d270bc351ae5bb27"
-"checksum bare-metal 0.2.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a3caf393d93b2d453e80638d0674597020cef3382ada454faacd43d1a55a735a"
-"checksum bbqueue 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "fd19d1f2d21e6f6de95a61ea33bcfda30f30ac90ac3636d6d83a14baef4310f4"
-"checksum bitflags 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3d155346769a6855b86399e9bc3814ab343cd3d62c7e985113d46a0ec3c281fd"
-"checksum byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c3dd8985a7111efc5c80b44e23ecdd8c007de8ade3b96595387e812b957cf5"
-"checksum cast 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "926013f2860c46252efceabb19f4a6b308197505082c609025aa6706c011d427"
-"checksum cfg-if 0.1.9 (registry+https://github.com/rust-lang/crates.io-index)" = "b486ce3ccf7ffd79fdeb678eac06a9e6c09fc88d33836340becb8fffe87c5e33"
-"checksum clint 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "200296af81a4cbe7da52afd9e5c35b7782eca865678caf2280251b777c9c37aa"
-"checksum cortex-m 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f3c18719fdc57db65668bfc977db9a0fa1a41d718c5d9cd4f652c9d4b0e0956a"
-"checksum cortex-m-rt 0.6.10 (registry+https://github.com/rust-lang/crates.io-index)" = "17805910e3ecf029bdbfcc42b7384d9e3d9e5626153fa810002c1ef9839338ac"
-"checksum cortex-m-rt-macros 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d7ae692573e0acccb1579fef1abf5a5bf1d2f3f0149a22b16870ec9309aee25f"
-"checksum cortex-m-semihosting 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "05bd17c26d344f364eaf7f7ededc848ca8ef762a75d13c0829d4a3e62eb5418a"
-"checksum embedded-hal 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ee4908a155094da7723c2d60d617b820061e3b4efcc3d9e293d206a5a76c170b"
-"checksum fpa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f074479d683e5a8fd0bf1251d0a5d91b0d9178b867b44962191ed0eaaf8d4009"
-"checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
-"checksum log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14b6052be84e6b71ab17edffc2eeabf5c2c3ae1fdb464aae35ac50c67a44e1f7"
-"checksum nb 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "b1411551beb3c11dedfb0a90a0fa256b47d28b9ec2cdff34c25a2fa59e45dbdc"
-"checksum nrf52840-pac 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e375b19eec5ae6c75387ea2fff3d5a6f989d65a0af350fcfe854f31243bfdfe2"
-"checksum panic-semihosting 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "97cfb37c1d3b5f0cc18bf14485018cccd13bdd24f7b5bfd456c1d8760afef824"
-"checksum proc-macro2 0.4.30 (registry+https://github.com/rust-lang/crates.io-index)" = "cf3d2011ab5c909338f7887f4fc896d35932e29146c12c8d01da6b22a80ba759"
-"checksum quote 0.6.13 (registry+https://github.com/rust-lang/crates.io-index)" = "6ce23b6b870e8f94f81fb0a363d65d86675884b34a09043c81e5562f11c1f8e1"
-"checksum r0 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "e2a38df5b15c8d5c7e8654189744d8e396bddc18ad48041a500ce52d6948941f"
-"checksum rand 0.5.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c618c47cd3ebd209790115ab837de41425723956ad3ce2e6a7f09890947cacb9"
-"checksum rand_core 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6fdeb83b075e8266dcc8762c22776f6877a63111121f5f8c7411e5be7eed4b"
-"checksum rand_core 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "9c33a3c44ca05fa6f1807d8e6743f3824e8509beca625669633be0acbdf509dc"
-"checksum rubble-nrf52 0.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a5316700fe451281c7dd96b8769768c9fabe87bbd084f8ec507a142b76cff4f2"
-"checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
-"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
-"checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
-"checksum syn 0.15.44 (registry+https://github.com/rust-lang/crates.io-index)" = "9ca4b3b69a77cbe1ffc9e198781b7acb0c7365a883670e8f1c1bc66fba79a5c5"
-"checksum typenum 1.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "612d636f949607bdf9b123b4a6f6d966dedf3ff669f7f045890d3a4a73948169"
-"checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
-"checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
-"checksum vcell 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "45c297f0afb6928cd08ab1ff9d95e99392595ea25ae1b5ecf822ff8764e57a0d"
-"checksum void 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6a02e4885ed3bc0f2de90ea6dd45ebcbb66dacffe03547fadbb0eeae2770887d"
-"checksum volatile-register 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0d67cb4616d99b940db1d6bd28844ff97108b498a6ca850e5b6191a532063286"
diff --git a/ble/Cargo.toml b/ble/Cargo.toml
index 865834c..d645057 100644
--- a/ble/Cargo.toml
+++ b/ble/Cargo.toml
@@ -15,7 +15,7 @@ embedded-hal = "0.2"
 panic-semihosting = "~0.5"
 nb = "~0.1"
 log = "0.4"
-starb = "~0.2"
+starb = "~0.3"
 clint = "~0.2"
 cortex-m-semihosting = "~0.3"
 bbqueue = "~0.3"
@@ -23,19 +23,3 @@ bbqueue = "~0.3"
 [features]
 default = ["rt", "rubble-nrf52/52840", "cortex-m/const-fn", "cortex-m/inline-asm"]
 rt = ["nrf52840-hal/rt"]
-
-[patch.crates-io]
-nrf52840-hal = { path = "../../nrf52-hal/nrf52840-hal" }
-starb = { path = "../../usbh/starb" }
-rubble = { path = "../../rubble/rubble" }
-
-[profile.dev]
-incremental = false
-codegen-units = 1
-debug = true
-lto = false
-
-[profile.release]
-debug = true
-lto = true
-opt-level = "s"
diff --git a/ble/openocd.cfg b/ble/openocd.cfg
index 1aa6f38..e77bd64 100644
--- a/ble/openocd.cfg
+++ b/ble/openocd.cfg
@@ -1,2 +1,4 @@
 source [find interface/cmsis-dap.cfg]
 source [find target/nrf52.cfg]
+
+adapter_khz 10000
diff --git a/ble/src/ble.rs b/ble/src/ble.rs
index ac3542f..04d8687 100644
--- a/ble/src/ble.rs
+++ b/ble/src/ble.rs
@@ -7,11 +7,12 @@ use rubble::{
     gatt::BatteryServiceAttrs,
     l2cap::{BleChannelMap, L2CAPState},
     link::{
-        ad_structure::AdStructure, queue, AddressKind, DeviceAddress, HardwareInterface, LinkLayer,
-        Responder, MIN_PDU_BUF,
+        ad_structure::{AdStructure, ServiceUuids},
+        queue, AddressKind, DeviceAddress, HardwareInterface, LinkLayer, Responder, MIN_PDU_BUF,
     },
     security_manager::NoSecurity,
     time::{Duration, Timer},
+    uuid::Uuid,
 };
 use rubble_nrf52::{
     radio::{BleRadio, PacketBuffer},
@@ -76,11 +77,16 @@ pub fn setup(
     // may be able to use ring buffer to avoid sharing?
     let mut ble_radio = unsafe { BleRadio::new(radio, &mut TX_BUF, &mut RX_BUF) };
 
+    let uart_uuid =
+        Uuid::parse_str("6E400001-B5A3-F393-E0A9-E50E24DCCA9E").expect("parsing UART UUID");
     let mut ble_ll = LinkLayer::<NRF52840>::new(addr, ble_timer);
     let next_update = ble_ll
         .start_advertise(
             Duration::from_millis(200),
-            &[AdStructure::CompleteLocalName("bleusb")],
+            &[
+                AdStructure::CompleteLocalName("bleusb"),
+                AdStructure::ServiceUuids128(ServiceUuids::from_uuids(true, &[uart_uuid])),
+            ],
             &mut ble_radio,
             tx_cons,
             rx_prod,
diff --git a/usb/.cargo/config b/usb/.cargo/config
index 9a30220..b10f29d 100644
--- a/usb/.cargo/config
+++ b/usb/.cargo/config
@@ -1,6 +1,2 @@
 [build]
 target = "thumbv6m-none-eabi"
-
-[target.thumbv6m-none-eabi]
-rustflags = ["-C", "link-arg=-Tlink.x"]
-runner = "gdb-multiarch"
diff --git a/usb/.gdbinit b/usb/.gdbinit
index 2782abd..937b91c 100644
--- a/usb/.gdbinit
+++ b/usb/.gdbinit
@@ -1,3 +1,7 @@
+define hook-quit
+  set confirm off
+end
+
 # print demangled symbols by default
 set print asm-demangle on
 
diff --git a/usb/Cargo.toml b/usb/Cargo.toml
index 3a12676..fb6712c 100644
--- a/usb/Cargo.toml
+++ b/usb/Cargo.toml
@@ -9,9 +9,8 @@ repository = "https://github.com/bjc/bleusb.git"
 
 [dependencies]
 embedded-hal = "0.2"
-trinket_m0 = "0.4"
 log = "0.4"
-starb = "0.2"
+starb = "0.3"
 clint = "0.2"
 nb = "0.1"
 cortex-m = "0.6"
@@ -21,19 +20,12 @@ smart-leds = "0.2"
 apa102-spi = "0.2"
 usb-host = "0.1"
 bootkbd = "0.2"
-#atsamd-usb-host = { git = "https://github.com/bjc/atsamd-usb-host.git", rev = "385efdf53fa3fe38591f22d01edf75d3087c2326" }
 atsamd-usb-host = { path = "../../usbh/atsamd-usb-host" }
-
-[patch.crates-io]
-#atsamd-hal = { git = "https://github.com/atsamd-rs/atsamd.git", rev = "ce2c2f426" }
-#bootkbd = { git = "https://github.com/bjc/bootkbd.git", rev = "49827fce5adbaf636b893919f31c0dbd97bb3eb4" }
-#usb-host = { git = "https://github.com/bjc/usb-host.git", rev = "b0be48424e81384de3280b5a5ac521d694b82e15" }
-#trinket_m0 = { git = "https://github.com/atsamd-rs/atsamd.git", rev = "53f8d846e40715c8592d171d9a57b66ee303207a" }
-atsamd-hal = { path = "../../usbh/atsamd/hal" }
-trinket_m0 = { path = "../../usbh/atsamd/boards/trinket_m0" }
-bootkbd = { path = "../../usbh/bootkbd" }
-usb-host = { path = "../../usbh/usb-host" }
-starb = { path = "../../usbh/starb" }
+#atsamd-usb-host = { git = "https://github.com/bjc/atsamd-usb-host.git", rev = "52d36ba" }
+trinket_m0 = {version = "0.5", optional = true }
+feather_m0 = {version = "0.5", optional = true }
 
 [features]
-default = ["atsamd-usb-host/samd21e18a"]
+default = ["trinket-m0"]
+trinket-m0 = ["trinket_m0", "atsamd-usb-host/samd21e18a"]
+feather-m0 = ["feather_m0", "atsamd-usb-host/samd21g18a"]
diff --git a/usb/Makefile b/usb/Makefile
index 6d420d1..e673fc4 100644
--- a/usb/Makefile
+++ b/usb/Makefile
@@ -30,10 +30,18 @@ test:
 	cargo test
 
 cargo-build:
-	cargo rustc $(CARGOFLAGS) -- -C link-arg=-Tlink.x
+	cargo build #rustc $(CARGOFLAGS) -- -C link-arg=-Tlink.x
 
 $(OUTDIR)/$(APP): cargo-build
 
+        # stlink_swim
+        # hla_jtag
+        # hla_swd
+        # swd
+        # aice_jtag
+        # jtag
+
+
 flash: $(APP).bin
 	feather-cmd r
 	sleep 2
diff --git a/usb/openocd.conf b/usb/openocd.conf
index 586c517..d1557f7 100644
--- a/usb/openocd.conf
+++ b/usb/openocd.conf
@@ -2,10 +2,18 @@ gdb_port 3334
 telnet_port 4445
 tcl_port 6667
 
-source [find interface/stlink-v2.cfg]
-set TRANSPORT stlink_jtag
+source [find interface/stlink.cfg]
+transport select hla_swd
+
+set CHIPNAME at91samd21e18a
 set CPUTAPID 0x0bc11477
 source [find target/at91samdXX.cfg]
 
 adapter_khz 3750
-reset_config srst_only srst_nogate
+#adapter_khz 300
+adapter_nsrst_delay 100
+adapter_nsrst_assert_width 100
+reset_config srst_nogate
+
+init
+reset halt
diff --git a/usb/src/dotstar.rs b/usb/src/dotstar.rs
index 8e930d0..c7eed7d 100644
--- a/usb/src/dotstar.rs
+++ b/usb/src/dotstar.rs
@@ -1,9 +1,9 @@
 use trinket_m0::{
     clock::GenericClockController,
     gpio::{self, Floating, Input},
+    pac::{PM, SERCOM1},
     prelude::*,
     sercom::{self, PadPin, SPIMaster1},
-    PM, SERCOM1,
 };
 
 use apa102_spi::Apa102;
diff --git a/usb/src/logger.rs b/usb/src/logger.rs
index 9fbba77..7357c22 100644
--- a/usb/src/logger.rs
+++ b/usb/src/logger.rs
@@ -1,14 +1,14 @@
+use crate::hal::{
+    gpio::{Pa6, Pa7, PfD},
+    sercom::{Sercom0Pad2, Sercom0Pad3, UART0},
+};
 use crate::rtc;
-use starb::{Reader, RingBuffer, Writer};
 
 use core::cell::UnsafeCell;
 use core::fmt::{self, Write};
 use embedded_hal::{digital::v2::OutputPin, serial};
 use log::{Metadata, Record};
-use trinket_m0::{
-    gpio::{Pa6, Pa7, PfD},
-    sercom::{Sercom0Pad2, Sercom0Pad3, UART0},
-};
+use starb::{Reader, RingBuffer, Writer};
 
 static mut UART0: usize = 0;
 
diff --git a/usb/src/main.rs b/usb/src/main.rs
index 523d275..42cdf55 100644
--- a/usb/src/main.rs
+++ b/usb/src/main.rs
@@ -3,6 +3,12 @@
 #![no_std]
 #![no_main]
 
+#[cfg(feature = "feather-m0")]
+use feather_m0 as hal;
+#[cfg(feature = "trinket-m0")]
+use trinket_m0 as hal;
+
+#[cfg(feature = "trinket-m0")]
 mod dotstar;
 mod logger;
 mod macros;
@@ -13,21 +19,24 @@ use bootkbd::BootKeyboard;
 use clint::HandlerArray;
 use core::mem;
 use core::panic::PanicInfo;
-use cortex_m::{asm::wfi, peripheral::NVIC};
+use cortex_m::{
+    asm::wfi,
+    peripheral::{Peripherals as CorePeripherals, NVIC},
+};
 use cortex_m_rt::{entry, exception, ExceptionFrame};
 use embedded_hal::{blocking::i2c::Write, digital::v2::OutputPin};
-use log::{info, LevelFilter};
-use smart_leds::colors;
-use smart_leds_trait::SmartLedsWrite;
-use trinket_m0::{
-    self as hal,
+use hal::{
     clock::GenericClockController,
     gpio::{OpenDrain, Output, Pa10, Pa6, Pa7, PfD},
+    pac::{interrupt, Interrupt, Peripherals},
     sercom,
-    target_device::{interrupt, Interrupt},
     time::*,
-    CorePeripherals, Peripherals,
 };
+use log::{info, LevelFilter};
+#[cfg(feature = "trinket-m0")]
+use smart_leds::colors;
+#[cfg(feature = "trinket-m0")]
+use smart_leds_trait::SmartLedsWrite;
 use usb_host::Driver;
 
 // A very unsafe copy of an LED to turn on when things go really, really wrong.
@@ -77,19 +86,22 @@ fn main() -> ! {
     red_led.set_low().expect("turning off red LED");
     unsafe { LED = mem::transmute(&red_led) }
 
-    let mut dotstar = dotstar::new(
-        dp.SERCOM1,
-        pins.swdio,
-        pins.dotstar_di,
-        pins.dotstar_ci,
-        &mut pins.port,
-        &mut dp.PM,
-        &mut clocks,
-    );
-    let black = [colors::BLACK];
-    dotstar
-        .write(black.iter().cloned())
-        .expect("turning off dotstar");
+    #[cfg(feature = "trinket-m0")]
+    {
+        let mut dotstar = dotstar::new(
+            dp.SERCOM1,
+            pins.swdio,
+            pins.dotstar_di,
+            pins.dotstar_ci,
+            &mut pins.port,
+            &mut dp.PM,
+            &mut clocks,
+        );
+        let black = [colors::BLACK];
+        dotstar
+            .write(black.iter().cloned())
+            .expect("turning off dotstar");
+    }
 
     // We do the transmute because, while all the underlying data is
     // static, we're unable to get a referecence to the UART or LED
diff --git a/usb/src/rtc.rs b/usb/src/rtc.rs
index fa7b347..dc4259f 100644
--- a/usb/src/rtc.rs
+++ b/usb/src/rtc.rs
@@ -1,6 +1,7 @@
+use crate::hal::{clock::GenericClockController, pac::RTC};
+
 use core::sync::atomic::{AtomicUsize, Ordering};
 use log;
-use trinket_m0::{clock::GenericClockController, RTC};
 
 struct Clock(AtomicUsize);
 impl Clock {