From c8c24ed2fcdd9a5eb736ffb9ff1a7665a0283618 Mon Sep 17 00:00:00 2001
From: David Cermak <cermak@espressif.com>
Date: Wed, 3 Nov 2021 13:45:36 +0100
Subject: [PATCH] Examples: Fix build error when SIM needs no PIN

---
 components/esp_modem/examples/ap_to_pppos/main/network_dce.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/components/esp_modem/examples/ap_to_pppos/main/network_dce.c b/components/esp_modem/examples/ap_to_pppos/main/network_dce.c
index 499593aa2..8c825a0fd 100644
--- a/components/esp_modem/examples/ap_to_pppos/main/network_dce.c
+++ b/components/esp_modem/examples/ap_to_pppos/main/network_dce.c
@@ -25,6 +25,7 @@ esp_err_t modem_init_network(esp_netif_t *netif)
         return ESP_FAIL;
     }
 
+#ifdef CONFIG_EXAMPLE_NEED_SIM_PIN
     // configure the PIN
     bool pin_ok = false;
     if (esp_modem_read_pin(dce, &pin_ok) == ESP_OK && pin_ok == false) {
@@ -34,6 +35,7 @@ esp_err_t modem_init_network(esp_netif_t *netif)
             abort();
         }
     }
+#endif // CONFIG_EXAMPLE_NEED_SIM_PIN
     return ESP_OK;
 }