Plenty of writes now works and an expanded example exists in the terraform directory

terraform/main.tf

@@ -1,17 +1,54 @@
 # All 13 read-only extractors are now ported as data sources -- see
 # ~/code/experiments/hpe/terraform-provider-hpe1810/internal/provider/data_source_*.go
-# Eventually resource "hpe1810_locator" once actions/locator.py is ported.
+#
+# First write resource: the locator LED. Singleton; Delete resets it to
+# Disable (see resource_locator.go for why that's safe here specifically).
+resource "hpe1810_locator" "draupnir01" {
+  enabled = false
+}
 
-data "hpe1810_system_description" "this" {}
-data "hpe1810_network_setup" "this" {}
-data "hpe1810_port_summary" "this" {}
-data "hpe1810_lldp_statistics" "this" {}
-data "hpe1810_buffered_log" "this" {}
-data "hpe1810_mac_table" "this" {}
-data "hpe1810_trunk_status" "this" {}
-data "hpe1810_loop_protection_status" "this" {}
-data "hpe1810_dual_image_status" "this" {}
-data "hpe1810_clock" "this" {}
-data "hpe1810_sntp" "this" {}
-data "hpe1810_log_configuration" "this" {}
-data "hpe1810_backup_manager" "this" {}
+# Second write resource: Green Features (EEE power-saving). Singleton;
+# Delete resets to factory defaults (see resource_green_features.go).
+# Values below match what's currently live on the switch, so the first
+# `tofu plan` shows no drift.
+resource "hpe1810_green_features" "draupnir01" {
+  green_mode          = true
+  mode_led_time       = 10
+  phy_auto_power_down = true
+}
+
+# Third write resource: per-port config, driven by for_each over var.ports
+# (see variables.tf). The admin_port (default 24, see provider.tf) can
+# never be written by draupnir01 resource regardless of what's in var.ports --
+# see resource_port.go's guardAdminPort. Delete disables the port and
+# resets Link Speed to Auto (see resource_port.go for why that's safe here).
+resource "hpe1810_port" "draupnir01" {
+  for_each = var.ports
+
+  interface  = each.key
+  admin_mode = each.value.admin_mode
+  link_speed = each.value.link_speed
+}
+
+# Fourth write resource: System Name/Location/Contact (SysDescription.html).
+# Singleton; only these three fields are actually writable on that page --
+# see resource_system_description.go. Delete resets all three to "".
+resource "hpe1810_system_description" "draupnir01" {
+  name     = "draupnir01"
+  location = "Lab"
+  contact  = ""
+}
+
+data "hpe1810_system_description" "draupnir01" {}
+data "hpe1810_network_setup" "draupnir01" {}
+data "hpe1810_port_summary" "draupnir01" {}
+data "hpe1810_lldp_statistics" "draupnir01" {}
+data "hpe1810_buffered_log" "draupnir01" {}
+data "hpe1810_mac_table" "draupnir01" {}
+data "hpe1810_trunk_status" "draupnir01" {}
+data "hpe1810_loop_protection_status" "draupnir01" {}
+data "hpe1810_dual_image_status" "draupnir01" {}
+data "hpe1810_clock" "draupnir01" {}
+data "hpe1810_sntp" "draupnir01" {}
+data "hpe1810_log_configuration" "draupnir01" {}
+data "hpe1810_backup_manager" "draupnir01" {}