Add pre-built binaries

.gitignore

@@ -4,3 +4,5 @@
 .vscode/launch.json
 .vscode/ipch
 boards/pack/Puya.PY32F0xx_DFP.1.1.3a*
+bin/flash.cmd
+bin/out.bin

README.md

@@ -61,7 +61,18 @@ If you want to hack on this without a debug probe, an XMODEM bootloader is avail
 - Works as an addon, or standalone with a CR2032
 
 
-## Misc Notes:
+## Binaries
+
+The `bin/` directory contains pre-built binaries. Names are formatted as follows:
+
+`testo_0.0.1_abcdef1_fw2k.bin`
+
+`fw2k` are intended to be sent via XMODEM to the built-in bootloader.
+
+`blfw_x.y.z` are binary files with the bootloader version `x.y.z` prepended. These are intended to be written with a debugger or programmer.
+
+
+## Misc Notes
 
 - This device is using PUYA PY32F003 MCU, an MCU intended for
   the China domestic market. This MCU, as well as other