Fit Wio-E5 Companion without reducing storage or contacts

test/test_ed25519_compact_field.py

@@ -222,7 +222,7 @@ int main(void) {
                             str(harness), str(ED25519 / "fe.c"), "-o", str(executable)], check=True)
             subprocess.run([str(executable)], check=True)
 
-    def test_only_stm32_companion_recipes_opt_in(self):
+    def test_only_size_constrained_stm32_companions_opt_in(self):
         profiles = []
         for ini in (ROOT / "variants").glob("*/platformio.ini"):
             section = ""
@@ -233,6 +233,7 @@ int main(void) {
                     profiles.append((ini.parent.name, section))
         self.assertEqual(sorted(profiles), [
             ("rak3x72", "[env:RAK_3x72_companion_radio_usb]"),
+            ("wio-e5-dev", "[env:wio-e5_companion_radio_usb]"),
             ("wio-e5-mini", "[env:wio-e5-mini_companion_radio_usb]"),
         ])
 

test/test_ed25519_compact_scalar.py

@@ -128,7 +128,7 @@ int main(void) {
                             str(harness), str(ED25519 / "sc.c"), "-o", str(executable)], check=True)
             subprocess.run([str(executable)], check=True)
 
-    def test_only_stm32_companion_profiles_enable_compact_scalars(self):
+    def test_only_size_constrained_stm32_companions_enable_compact_scalars(self):
         profiles = []
         for ini in (ROOT / "variants").glob("*/platformio.ini"):
             section = ""
@@ -139,6 +139,7 @@ int main(void) {
                     profiles.append((ini.parent.name, section))
         self.assertEqual(sorted(profiles), [
             ("rak3x72", "[env:RAK_3x72_companion_radio_usb]"),
+            ("wio-e5-dev", "[env:wio-e5_companion_radio_usb]"),
             ("wio-e5-mini", "[env:wio-e5-mini_companion_radio_usb]"),
         ])
 

test/test_stm32_companion_profile.py

@@ -56,8 +56,22 @@ class STM32CompanionProfileTest(unittest.TestCase):
         self.assertEqual(self.companion["build_unflags"].split(), ["-Os"])
 
     def test_size_profile_uses_equivalent_fixed_loop_field_products(self):
-        self.assertRegex(self.companion["build_flags"],
-                         r"-D\s+ED25519_COMPACT_FIELD=1\b")
+        for definition in ("SHA512", "SCALAR", "FIELD"):
+            self.assertRegex(self.companion["build_flags"],
+                             r"-D\s+ED25519_COMPACT_" + definition + r"=1\b")
+
+
+class WioDevSTM32CompanionProfileTest(STM32CompanionProfileTest):
+    variant = "wio-e5-dev"
+    target = "wio-e5_companion_radio_usb"
+    base = "lora_e5"
+
+    def test_uart_pins_and_adc_monitor_are_retained(self):
+        flags = self.config[self.base]["build_flags"]
+        self.assertRegex(flags, r"-D\s+PIN_SERIAL_RX=PB7\b")
+        self.assertRegex(flags, r"-D\s+PIN_SERIAL_TX=PB6\b")
+        header = (ROOT / "variants" / self.variant / "target.h").read_text()
+        self.assertIn("analogRead(PIN_A3)", header)
 
 
 class WioSTM32CompanionProfileTest(STM32CompanionProfileTest):

variants/wio-e5-dev/platformio.ini

@@ -90,7 +90,13 @@ extends = lora_e5
 platform_packages = platformio/toolchain-gccarmnoneeabi@^1.140201.0
 build_unflags = -Os
 build_flags = ${lora_e5.build_flags}
+  ; This headless UART Companion uses ADC, GPIO and SysTick, not PWM/tone.
+  ; Retain the low-level TIM HAL without unused Arduino timer wrappers.
+  -D RADIOLIB_TONE_UNSUPPORTED
+  -D HAL_TIM_MODULE_ONLY
   -D ED25519_COMPACT_SHA512=1 ; same hash rounds, compact loop preserves the filesystem boundary
+  -D ED25519_COMPACT_SCALAR=1 ; equivalent fixed-loop arithmetic preserves Companion capacities
+  -D ED25519_COMPACT_FIELD=1 ; share field products without moving the filesystem boundary
   -Oz
   -flto
   -fno-inline-small-functions