From 2671599b902afa55f9c21f0ee9db74889c6f9a67 Mon Sep 17 00:00:00 2001
From: geeksville <kevinh@geeksville.com>
Date: Fri, 7 Feb 2020 07:40:42 -0800
Subject: [PATCH] auto generate partition tables

---
 genpartitions.py    | 41 +++++++++++++++++++++++++++++++++++++++++
 partition-table.csv | 13 +++++++------
 2 files changed, 48 insertions(+), 6 deletions(-)
 create mode 100755 genpartitions.py

diff --git a/genpartitions.py b/genpartitions.py
new file mode 100755
index 00000000..a9f29753
--- /dev/null
+++ b/genpartitions.py
@@ -0,0 +1,41 @@
+
+
+# This is a layout for 4MB of flash
+# Name,   Type, SubType, Offset,  Size, Flags
+# nvs,      data, nvs,     0x9000,  0x6000,
+# otadata,  data, ota,     , 0x2000,
+# app0,     app,  ota_0,   , 0x1c0000,
+# app1,     app,  ota_1,   , 0x1c0000,
+# spiffs,   data, spiffs,  , 0x06f000,
+
+start = 0x9000
+nvssys = 0x3000
+nvsuser = 0x3000
+nvs = nvssys + nvsuser
+ota = 0x2000
+# app = 0x1c0000
+spi = 128 * 1024
+
+# treat sys part sizes + spiffs size as reserved, then calculate what appsize can be
+reserved = start + nvs + ota + spi
+maxsize = 0x400000 # 4MB
+
+app = (maxsize - reserved) / 2
+
+# total = start + nvs + ota + 2 * app + spi
+
+nvskb = nvsuser / 1024
+spikb = spi / 1024
+appkb = app / 1024
+
+table = """
+# This is autogenerated by genpartions.py - change that tool instead!
+# appsize={appkb} KB, spiffs={spikb} KB, usernvs={nvskb} KB
+# Name,   Type, SubType, Offset,  Size, Flags
+nvs,      data, nvs,     0x{start:x},  0x{nvs:x},
+otadata,  data, ota,     , 0x{ota:x},
+app0,     app,  ota_0,   , 0x{app:x},
+app1,     app,  ota_1,   , 0x{app:x},
+spiffs,   data, spiffs,  , 0x{spi:x} """.format(**locals())
+
+print table
\ No newline at end of file
diff --git a/partition-table.csv b/partition-table.csv
index 80243db6..3d0c7ccc 100644
--- a/partition-table.csv
+++ b/partition-table.csv
@@ -1,7 +1,8 @@
-# This is a layout for 4MB of flash
+# This is autogenerated by genpartions.py - change that tool instead!
+# appsize=1950 KB, spiffs=128 KB, usernvs=12 KB
 # Name,   Type, SubType, Offset,  Size, Flags
-nvs,      data, nvs,     0x9000,  0x5000,
-otadata,  data, ota,     0xe000,  0x2000,
-app0,     app,  ota_0,   0x10000, 0x1c0000,
-app1,     app,  ota_1,   0x1d0000,0x1c0000,
-spiffs,   data, spiffs,  0x390000,0x070000,
\ No newline at end of file
+nvs,      data, nvs,     0x9000,  0x6000,
+otadata,  data, ota,     , 0x2000,
+app0,     app,  ota_0,   , 0x1e7800,
+app1,     app,  ota_1,   , 0x1e7800,
+spiffs,   data, spiffs,  , 0x20000