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lbuild module: modm:freertos:tcp

Amazon FreeRTOS+TCP is a scalable, open source and thread safe TCP/IP stack for FreeRTOS. FreeRTOS+TCP's features and RAM footprint are fully scalable, making it equally applicable to smaller lower throughput microcontrollers as larger higher throughput microprocessors.

This module provides the latest FreeRTOS+TCP LTS release integrated with modm:

  • FreeRTOS_printf() and FreeRTOS_debug_printf() forwarded to modm:debug.


This module generates a FreeRTOSIPConfig.h config file for modm integration with these overwritable settings:

  • ipconfigIP_TASK_PRIORITY = (configMAX_PRIORITIES - 2)
  • FreeRTOS_printf(x) = MODM_LOG_INFO.printf(x)
  • FreeRTOS_debug_printf(x) = MODM_LOG_DEBUG.printf(x)

All other config settings are unchanged by modm and are defaulted by FreeRTOS itself, please refer to the FreeRTOS+TCP Config documentation to understand what each of these do.

To change a configuration setting, define a <FreeRTOSIPConfigLocal.h> file, which is included before the optional settings, so you can overwrite them easily.

An example <FreeRTOSIPConfigLocal.h> file:

// Change IP task stack size
#define ipconfigIP_TASK_STACK_SIZE_WORDS  1024
// Enable printing
#define ipconfigHAS_PRINTF  1
#define ipconfigHAS_DEBUG_PRINTF  1

Limited availability: Check with 'lbuild discover' if this module is available for your target!