Sming based on Espressif RTOS SDK.

Based on: Sming Develop, including commits until Sming 2.1.0 release Based on: Espressif RTOS_SDK 1.3.0

Feedback:

• When finding issues during conversion of applications -> Submit an issue on the Sming_RTOS repository.

Requirements:

• Espressif RTOS_SDK 1.3.0
• UDK 2.0.9 for toolchain and SDK on Windows or esp-open-sdk on Linux
  • Be sure to have a "clean" sdk without previously applied updates
• esp-alt-sdk provides downloads for all platforms, @kireevco to supply links

Usage:

• Beware : Some Environment variables names are identical to SMING_NONOS !

• Clone this repository.

• SET environment variables valid for the location

• Set SDK location in Makefile- or as environment variables -> SDK_BASE = ....

• Set WIFI_SSID & WIFI_PWD in environment variables

• Compile & flash

Additional needed software

• Spiffy : Source included in Sming repository
• [ESPtool2] (https://github.com/raburton/esptool2) esptool2

Completeness:

• All Core and Network functionality is ported to Sming_RTOS
• Spiffy & Spiffs Filesystem functionality included

Applications:

• Application which includes HttpAjax & HWPwm example source.
• HttpAjax -> works
• HWPWm, -> compiles, not tested on hardware
• Neopixel -> working
• ScannerI2C -> working
• WebSockets -> working
• SDCard -> working
• HCSR04 Ultrasonic -> working
• DHT11-22 -> DHT11 tested and working , DHT22 untested
• SSD1306 Screen -> i2c module tested and working, spi module untested
• DS1820 -> working
• SystemClock&NTP -> working
• BMP180 Pressure -> working
• RBoot -> working
• PCD8544 LCD (Nokia 5110 LCD) -> working

Known RTOS/NONOS differences with application consequences

Generic :

• No WDT routines
• Soft timer only on milli and not on micro level

SPI_SIZE

• The espressif SDK is more restrictive on use of flash The SPI_SIZE needs to be set correct to prevent issues (especially Spiffs)

Include files :

• The user_config.h file does not contain any framework includes anymore. -> Remove the NONOS user_config.h ! If not removed, there will be unresolved .h files
• The directory structure has changed. The only include necessary is the #include "SmingCore.h" When using libraries use #include "libraries/......" For case sensitive systems : beware of naming

Spiffs

• Spiffs FS'es created on NONOS are not supported -> Create a new spiffs using the RTOS supplied Spiffy !
• When mounting the FS on Flash is checked for "Generic spiffy structure" (blocksize, FS length,..)
• spiffs_mount() and spiffs_mount_manual return bool based on mount result
• When using spiffs_mount() the size of the spiffs FS is autodetected.
• When using spiffs_mount_manual()
  • use the actual flash address : For conversion of current spiffs_mount_manual : subtract 0x40200000 from start address
  • use filesize is 0 (zero) for autodetected size of FS
• See the remark above on SPI_SIZE. If set not correct the spiffs_mount and spiffs_mount_manual will fail. rBoot
  • Works as in Sming but ... See the above on spiffs_mount_manual !

HardwarePWM. - Duty cycle is now independent on period. - Values are from 0 - 1023