Expand path to tinuf2 image when checking existence in platformio-bui…

…ld.py (#7631)

* Expand path to tinuf2 image when checking existence

* More isFiles fixed

tools/platformio-build.py

@@ -51,19 +51,19 @@ def get_partition_table_csv(variants_dir):
 
  if partitions_name:
  # A custom partitions file is selected
- if isfile(join(variant_partitions_dir, partitions_name)):
+ if isfile(env.subst(join(variant_partitions_dir, partitions_name))):
  return join(variant_partitions_dir, partitions_name)
 
  return abspath(
  join(fwpartitions_dir, partitions_name)
- if isfile(join(fwpartitions_dir, partitions_name))
+ if isfile(env.subst(join(fwpartitions_dir, partitions_name)))
  else partitions_name
  )
 
  variant_partitions = join(variant_partitions_dir, "partitions.csv")
  return (
  variant_partitions
- if isfile(variant_partitions)
+ if isfile(env.subst(variant_partitions))
  else join(fwpartitions_dir, "default.csv")
  )
 
@@ -81,7 +81,7 @@ def get_bootloader_image(variants_dir):
 
  return (
  variant_bootloader
- if isfile(variant_bootloader)
+ if isfile(env.subst(variant_bootloader))
  else generate_bootloader_image(
  join(
  FRAMEWORK_DIR,
@@ -126,8 +126,8 @@ def add_tinyuf2_extra_image():
  )
 
  # Add the UF2 image only if it exists and it's not already added
- if not isfile(tinuf2_image):
- print("Warning! The `%s` UF2 bootloader image doesn't exist" % tinuf2_image)
+ if not isfile(env.subst(tinuf2_image)):
+ print("Warning! The `%s` UF2 bootloader image doesn't exist" % env.subst(tinuf2_image))
  return
 
  if any(