make: Set up release profile and update the readme

Due to limiting the codegen units to 1 the size of the program memory
can be reduced roughly by 10% and the data memory by a bit more than
20%.

README.md

@@ -79,5 +79,6 @@ regulator is 3.3V.
 ### The Rust Firmware
 To flash the firmware, connect the ICSP pins of the board to the
 programmer and inside the `firmware/rust/` directory run `cargo make
-all`. This burns the fuses, writes the default configuration values to
+--profile release all`. This compiles the firmware with the release
+profile, burns the fuses, writes the default configuration values to
 the EEPROM and flashes the firmware.

firmware/rust/Cargo.lock

@@ -112,9 +112,9 @@ checksum = "de96540e0ebde571dc55c73d60ef407c653844e6f9a1e2fdbd40c07b9252d812"
 
 [[package]]
 name = "paste"
-version = "1.0.6"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0744126afe1a6dd7f394cb50a716dbe086cb06e255e53d8d0185d82828358fb5"
+checksum = "0c520e05135d6e763148b6426a837e239041653ba7becd2e538c076c738025fc"
 
 [[package]]
 name = "proc-macro-hack"
@@ -124,18 +124,18 @@ checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.36"
+version = "1.0.37"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7342d5883fbccae1cc37a2353b09c87c9b0f3afd73f5fb9bba687a1f733b029"
+checksum = "ec757218438d5fda206afc041538b2f6d889286160d649a86a24d37e1235afd1"
 dependencies = [
  "unicode-xid",
 ]
 
 [[package]]
 name = "quote"
-version = "1.0.15"
+version = "1.0.17"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "864d3e96a899863136fc6e99f3d7cae289dafe43bf2c5ac19b70df7210c0a145"
+checksum = "632d02bff7f874a36f33ea8bb416cd484b90cc66c1194b1a1110d067a7013f58"
 dependencies = [
  "proc-macro2",
 ]
@@ -176,9 +176,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "1.0.86"
+version = "1.0.91"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
+checksum = "b683b2b825c8eef438b77c36a06dc262294da3d5a5813fac20da149241dcd44d"
 dependencies = [
  "proc-macro2",
  "quote",

firmware/rust/Makefile.toml

@@ -6,35 +6,95 @@ HIGH_FUSE = "0xD6"
 LOW_FUSE = "0xE2"
 
 [tasks.size]
+run_task = [
+    { name = "size-development", condition = { profiles = [ "development" ] } },
+    { name = "size-release", condition = { profiles = [ "release" ] } },
+]
+
+[tasks.size-development]
 description = "Print usage of memory segments"
 dependencies = ["build"]
 command = "avr-size"
 args = ["--format=avr", "--mcu=${MCU}", "target/avr-atmega328p/debug/clock-generator.elf"]
 
+[tasks.size-release]
+description = "Print usage of memory segments"
+dependencies = ["build"]
+command = "avr-size"
+args = ["--format=avr", "--mcu=${MCU}", "target/avr-atmega328p/release/clock-generator.elf"]
+
 [tasks.copy_flash]
+run_task = [
+    { name = "copy_flash-development", condition = { profiles = [ "development" ] } },
+    { name = "copy_flash-release", condition = { profiles = [ "release" ] } },
+]
+
+[tasks.copy_flash-development]
 description = "Extract the flash"
 dependencies = ["build"]
 command = "avr-objcopy"
 args = ["-O", "ihex", "-j", ".text", "-j", ".data", "target/avr-atmega328p/debug/clock-generator.elf", "target/avr-atmega328p/debug/clock-generator.hex"]
 
+[tasks.copy_flash-release]
+description = "Extract the flash"
+dependencies = ["build"]
+command = "avr-objcopy"
+args = ["-O", "ihex", "-j", ".text", "-j", ".data", "target/avr-atmega328p/release/clock-generator.elf", "target/avr-atmega328p/release/clock-generator.hex"]
+
 [tasks.flash]
+run_task = [
+    { name = "flash-development", condition = { profiles = [ "development" ] } },
+    { name = "flash-release", condition = { profiles = [ "release" ] } },
+]
+
+[tasks.flash-development]
 description = "Flash the firmware"
 dependencies = ["copy_flash", "size"]
 command = "avrdude"
 args = ["-p", "${MCU}", "-c", "${PROGRAMMER}", "-U", "flash:w:target/avr-atmega328p/debug/clock-generator.hex:a"]
 
+[tasks.flash-release]
+description = "Flash the firmware"
+dependencies = ["copy_flash", "size-release"]
+command = "avrdude"
+args = ["-p", "${MCU}", "-c", "${PROGRAMMER}", "-U", "flash:w:target/avr-atmega328p/release/clock-generator.hex:a"]
+
 [tasks.copy_eeprom]
+run_task = [
+    { name = "copy_eeprom-development", condition = { profiles = [ "development" ] } },
+    { name = "copy_eeprom-release", condition = { profiles = [ "release" ] } },
+]
+
+[tasks.copy_eeprom-development]
 description = "Extract the EEPROM"
 dependencies = ["build"]
 command = "avr-objcopy"
 args = ["--change-section-lma", ".eeprom=0", "-O", "ihex", "-j", ".eeprom", "target/avr-atmega328p/debug/clock-generator.elf", "target/avr-atmega328p/debug/clock-generator.eep"]
 
+[tasks.copy_eeprom-release]
+description = "Extract the EEPROM"
+dependencies = ["build"]
+command = "avr-objcopy"
+args = ["--change-section-lma", ".eeprom=0", "-O", "ihex", "-j", ".eeprom", "target/avr-atmega328p/release/clock-generator.elf", "target/avr-atmega328p/release/clock-generator.eep"]
+
 [tasks.eeprom]
+run_task = [
+    { name = "eeprom-development", condition = { profiles = [ "development" ] } },
+    { name = "eeprom-release", condition = { profiles = [ "release" ] } },
+]
+
+[tasks.eeprom-development]
 description = "Flash the eeprom"
 dependencies = ["copy_eeprom", "size"]
 command = "avrdude"
 args = ["-p", "${MCU}", "-c", "${PROGRAMMER}", "-U", "eeprom:w:target/avr-atmega328p/debug/clock-generator.eep:a"]
 
+[tasks.eeprom-release]
+description = "Flash the eeprom"
+dependencies = ["copy_eeprom", "size"]
+command = "avrdude"
+args = ["-p", "${MCU}", "-c", "${PROGRAMMER}", "-U", "eeprom:w:target/avr-atmega328p/release/clock-generator.eep:a"]
+
 [tasks.fuses]
 description = "Burn the fuses"
 command = "avrdude"