About cleonb322

cleonb322 · 2024-10-29

I am using an STM32F767 with MQTT, and everything works without using TLS. But when I try to enable TLS, it fails to connect to the server because of a memory issue (calloc fails). I read other message boards that state that I need up to 60K of RAM t...

cleonb322 · 2024-03-10

I am working on an STM32f767 project with LWIP and MQTT. Everything seemed to work for a while but eventually, I received the following assert: "pbuf_free: p->ref > 0..." which caused it to crash sometimes; but sometimes it will continue to work wit...

cleonb322 · 2023-12-20

I have a custom board that used to work with an older version of CubeMx-generated code, but with recent changes, my board no longer works. I made modifications in ethernetif.c to accommodate the known bug. but the board no longer responds to ping fro...

cleonb322 · 2023-10-26

I have a project that uses TouchGFX with an external parallel SRAM for the frame buffer and double buffer. Everything works as expected, But if I try to declare other variables in the external SRAM (A section defined outside of the display buffer ran...

cleonb322 · 2022-10-30

cleonb322 · 2024-10-30

I'm having the same issue implementing tls with mqtt on my stm32f767. I'm limited to 16k in the SRAM2 section. Did you find a proper solution for this issue?

cleonb322 · 2024-10-26

I tried to enable TLS, but it failed malloc because MBEDTLS_SSL_IN_BUFFER_LEN size is 16717 and the available memory is 16K (16384) for SRAM2. according to TLS standards, I should not change the size of MBEDTLS_SSL_IN_BUFFER_LEN. what are my options?...

cleonb322 · 2024-10-24

if your binary is small enough, try jumping to an internal address for testing. maybe your MT25QL512 isn't configured correctly and don't forget to setup the MPU region for the external Flash.

cleonb322 · 2024-10-23

Before jumping to the main application, make sure you DeInit all the clocks, peripherals, and interrupts you used in the bootloader. in my case: HAL_SD_MspDeInit(&hsd1);__HAL_RCC_TIM1_CLK_DISABLE(); HAL_RCC_DeInit();HAL_DeInit();

cleonb322 · 2024-10-22

I forget to update this: #define LWIP_RAM_HEAP_POINTER (0x20078000) in iwapopts.h

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MQTT with TLS using STM32f767

MQTT pbuf_free: p->ref > 0 error

ethernet cannot ping but dhcp assigned an address

TouchGFX Frame Buffer in External Shared SRAM

I am working with a custom board: I have a Touchgfx project that seems to work fine with my custom loader, but if I place text in the external flash it will hard fault. Please note that when I place images/Icons it works fine.

Re: MQTT over MbedTLS for AWS

Re: MQTT pbuf_free: p->ref > 0 error

Re: STM32H750IBT6 Bootloader Problem

Re: STM32H750IBT6 Bootloader Problem

Re: MQTT pbuf_free: p->ref > 0 error