# HG changeset patch
# User Michiel Broek <mbroek@mbse.eu>
# Date 1592215701 -7200
# Node ID 52d9405474e10db2fe5c579e5d3232f0861824ba
# Parent  e949f41034eb8e26be33d19ed78ef613a3906dd7
Better check for a corrupted units file. Added a small boot delay to prevent units file corruption.

diff -r e949f41034eb -r 52d9405474e1 main/co2meter.c
--- a/main/co2meter.c	Sun Jun 14 22:35:24 2020 +0200
+++ b/main/co2meter.c	Mon Jun 15 12:08:21 2020 +0200
@@ -115,6 +115,7 @@
      */
     read_config();
     read_units();
+    vTaskDelay(500 / portTICK_PERIOD_MS);
 
     /*
      * Create FreeRTOS tasks
diff -r e949f41034eb -r 52d9405474e1 main/config.c
--- a/main/config.c	Sun Jun 14 22:35:24 2020 +0200
+++ b/main/config.c	Mon Jun 15 12:08:21 2020 +0200
@@ -86,23 +86,32 @@
 
     if (f == NULL) {
         // No units yet, create them.
-	esp_efuse_mac_get_default(mac_addr);
-        for (int i = 0; i < 3; i++) {
-            memset(&units[i], 0, sizeof(unit_t));
-            sprintf(units[i].uuid, "c0ffeeee-dead-beef-caf%d-%02x%02x%02x%02x%02x%02x", i & 3,
-                        mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
-            sprintf(units[i].alias, "unit%d", (i + 1) & 3);
-	    units[i].pressure_zero = 110;
-        }
-        write_units();
+	ESP_LOGE(TAG, "/spiffs/etc/units.conf not found, create new");
+	goto u_error;
     } else {
         dst = (uint8_t*)&units;
         size_t bytes = fread(dst, 1, sizeof(units), f);
         fclose(f);
+	if (bytes != sizeof(units)) {
+	    ESP_LOGE(TAG, "/spiffs/etc/units.conf read %d of %d bytes", bytes, sizeof(units));
+	    goto u_error;
+	}
         ESP_LOGI(TAG, "/spiffs/etc/units.conf read %d bytes", bytes);
 	for (int i = 0; i < 3; i++)
 	   ESP_LOGI(TAG, "%d %s %d %4d %3d", i, units[i].alias, units[i].pressure_channel, units[i].pressure_voltage, units[i].pressure_zero);
     }
+    return;
+
+u_error:
+    esp_efuse_mac_get_default(mac_addr);
+    for (int i = 0; i < 3; i++) {
+        memset(&units[i], 0, sizeof(unit_t));
+        sprintf(units[i].uuid, "c0ffeeee-dead-beef-caf%d-%02x%02x%02x%02x%02x%02x", i & 3,
+                        mac_addr[0], mac_addr[1], mac_addr[2], mac_addr[3], mac_addr[4], mac_addr[5]);
+        sprintf(units[i].alias, "unit%d", (i + 1) & 3);
+        units[i].pressure_zero = 110;
+    }
+    f = fopen("/spiffs/etc/units.conf", "w+");
 }