MQTT Client over LWIP using LAN8742A

[KAMAL Joshi]

Posted on May 30, 2018 at 07:19

Hello everyone,

i am using stm32F429ZI nucleo board and i want to implement mqtt over LWIP,

i am able to send connect request and publish dummy data on mqtt server but after the keep alive time socket error occurs,

i have already attached systick timer  with client.cyclic_tick.

In debug mode timer is working and same way client.cyclic_tick is also getting incremented.

but after the predefined keep alive time socket error occurs , may be there is an issue regarding time attachment,

i have attached my mqtt timer with systick as below:

void MQTT_Tick_Timer_Handler(void)

 

{

 

client.cyclic_tick++;

 

} 

and inside stm32f4xx_it.c

void SysTick_Handler(void)

{

osSystickHandler();

MQTT_Tick_Timer_Handler();

}

 

[daw ka]

Posted on July 02, 2018 at 14:10

Hey,

I'm also trying to implement mqtt on stm32F429. Unfortunately my code does not work. Can you share your project?

[KAMAL Joshi]

Posted on July 04, 2018 at 08:01

Unfortunately, due to company's policy, i cant share the project, tell me your issues, problems where you are stucking, i might help, if possible you can share your project, the below link might be useful for you.

http://www.nongnu.org/lwip/2_0_x/group__mqtt.html

 

https://dzone.com/articles/mqtt-with-lwip-and-the-nxp-frdm-k64f