Add example for 8MB flash devices

custom_8mb_ota.csv

@@ -0,0 +1,10 @@
+# 256 kB (instead of 24 kB) for nvs, the rest is used by application
+# Infos: https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-guides/partition-tables.html
+# TOTAL AVAILABLE: 0x800000
+# Name,   Type, SubType, Offset,   Size,      Flags
+otadata,  data, ota,     0x9000 ,  0x2000,
+phy_init, data, phy,     0xb000 ,  0x1000
+app0,     app,  ota_0,   0x10000,  0x3B0000,
+app1,     app,  ota_1,          ,  0x3B0000,
+nvs,      data, nvs,            ,  0x40000,
+storage,  data, spiffs,         ,  0x50000,

platformio.ini

@@ -147,6 +147,19 @@ build_flags = -DHAL=6
 board_upload.maximum_size = 16777216
 board_upload.flash_size = 16MB
 
+; custom board based on 8 MB flash devkitc
+[env:esp32-wrover-devkitc-v4-8mb]
+;https://docs.platformio.org/en/latest/boards/espressif32/esp-wrover-kit.html
+board = esp-wrover-kit
+board_build.partitions = custom_8mb_ota.csv
+build_flags = -DHAL=99
+              -DBOARD_HAS_PSRAM
+              -mfix-esp32-psram-cache-issue
+			  -DLOG_BUFFER_SIZE=10240
+			  -DBOARD_HAS_16MB_FLASH_AND_OTA_SUPPORT ; 8MB is fine
+board_upload.maximum_size = 8388608
+board_upload.flash_size = 8MB
+
 ;;; Change upload/monitor-port of your board regarding your operating-system and develboard!
 ;MAC: /dev/cu.SLAB_USBtoUART / /dev/cu.wchusbserial1420 / /dev/cu.wchusbserial1410
 ;WINDOWS: COM3