Tweak tests, consolidate pins target validation (#21254)

buildroot/tests/STM32F103RC_meeb

@@ -0,0 +1,18 @@
+#!/usr/bin/env bash
+#
+# Build tests for STM32F103RC MEEB_3DP (ccrobot-online.com)
+#
+
+# exit on first failure
+set -e
+
+#
+# Build with the default configurations
+#
+restore_configs
+opt_set MOTHERBOARD BOARD_CCROBOT_MEEB_3DP SERIAL_PORT 1 SERIAL_PORT_2 -1 \
+        X_DRIVER_TYPE TMC2208 Y_DRIVER_TYPE TMC2208 Z_DRIVER_TYPE TMC2208 E0_DRIVER_TYPE TMC2208
+exec_test $1 $2 "MEEB_3DP - Basic Config with TMC2208 SW Serial" "$3"
+
+# clean up
+restore_configs