After various memory exercises, then back to GPS to get UBlox working. UBlox is working. TODO: start libraries, downplay SD Card as we can use memory for interim logging

exercises/16_PSRAM/platformio.ini

@@ -0,0 +1,54 @@
+; 20260403 ChatGPT
+; Exercise 16_PSRAM
+
+[platformio]
+default_envs = amy
+
+[env]
+platform = espressif32
+framework = arduino
+board = freenove_esp32_s3_wroom
+monitor_speed = 115200
+extra_scripts = pre:scripts/set_build_epoch.py
+lib_deps =
+  Wire
+  olikraus/U8g2@^2.36.4
+
+build_flags =
+  -I ../../shared/boards
+  -I ../../external/microReticulum_Firmware
+  -D BOARD_MODEL=BOARD_TBEAM_S_V1
+  -D OLED_SDA=17
+  -D OLED_SCL=18
+  -D OLED_ADDR=0x3C
+  -D ARDUINO_USB_MODE=1
+  -D ARDUINO_USB_CDC_ON_BOOT=1
+
+board_build.flash_mode = qio
+board_build.psram = 1
+board_build.psram_type = spi
+board_build.arduino.memory_type = qio_qspi
+
+[env:amy]
+extends = env
+build_flags =
+  ${env.build_flags}
+  -D NODE_LABEL=\"AMY\"
+
+[env:bob]
+extends = env
+build_flags =
+  ${env.build_flags}
+  -D NODE_LABEL=\"BOB\"
+
+[env:cy]
+extends = env
+build_flags =
+  ${env.build_flags}
+  -D NODE_LABEL=\"CY\"
+
+[env:dan]
+extends = env
+build_flags =
+  ${env.build_flags}
+  -D NODE_LABEL=\"DAN\"