About Anton Olofsson

Anton Olofsson · 2020-11-20

We are using the STM32F769 SOC and have found a problem in that the LTDC controller is not started on all resets.Only way to get it to work again is removing power completely.Neither SW or PIN reset works, only POR will make the LTDC start again.All ...

Anton Olofsson · 2019-07-11

Anton Olofsson · 2020-12-03

Jan,Correct, this is not a serial interface, product uses parallel RGB TTL.Best,Anton

Anton Olofsson · 2020-12-03

Update on issue:We have found that all signals are OK (clock, DE, pixels) from CPU with oscilloscope, so problem must be with display.Sorry for unnecessary post on this ST forum.Thank you everyone who helped! I appreciate it.Best Anton

Anton Olofsson · 2020-12-02

Thank you Jan,This does not help. We have removed the display completely, re-attached it, soft-reset the SOM and still stuck.Next task is for us to connect a oscilloscope and check all clock and data pins. We should also check if the LTDC_IRQHandler ...

Anton Olofsson · 2020-12-02

Update on issue:Even SWD re-program has been verified not to reset LTDC. Only POR is confirmed to reset it.Stepping code while hanged gives no clues as of yet. Registers are exactly the same in hanged/working.Attached gdb dump of LTDC registers when ...

Anton Olofsson · 2020-11-23

Best @STOne-32 Thank you for your fast answer and recommendations!Will do!I'm pretty sure our startup sequence is exactly the one generated from CubeMX, although a very old version as the project is mature (4.19.0).We have only updated display-timin...

User statistics

User Activity

STM32F769, LTDC startup not always done, LTDC stuck

Hi! Regarding S2-LP and CSMA. Im trying to calculate T_cca and T_listen. For this i need Tbit (as refereed to in datasheet), am i correct that this is the bitrate-period? I.e for 115200bit/s we Have Tbit=8.68us? Thank you! Best, Anton

Re: STM32F769, LTDC startup not always done, LTDC stuck

Re: STM32F769, LTDC startup not always done, LTDC stuck

Re: STM32F769, LTDC startup not always done, LTDC stuck

Re: STM32F769, LTDC startup not always done, LTDC stuck

Re: STM32F769, LTDC startup not always done, LTDC stuck