STM32 MPUs Products

How to stop m4 core within m4 core

hi, I need to stop some peripherals within m4 core before linux stop command:echo -n stop > /sys/class/remoteproc/remoteproc0/statehow can I manage that ?tnx.

Good morning, thank you for your help. Found a problem. When you select Production mode, boot_0 boot_2 on, the CD card is installed, the debugger does not start debugging mode. С уважением, �?лек�?андр.

STM32MP157A M4, the result of ADC_1 always is odd value. (the DR LSB is '1' always.)

Hi, I'm porting ADC on M4, but some how the converting result is odd value always, seems the DR bit-0 is always '1'. I tested it by VR, range from 0v to 3.3v, the ADC suppose to convert it from 0 to 255, but I don't know why, I just get odd value bac...

How to initialize the audio codec cs42l51-cnz with standby mode in cortex-M4 of STM32mp157A-DK1 ?

I want to do audio recording an cm4，but dont know how to config the codec,  Is there an audio recorder example? 

Using the CS41L51 audio chip while using SPDIF will cause the following errors.

My device tree configuration { spdif_out: spdif-out { #sound-dai-cells = <0>; compatible = "linux,spdif-dit"; status = "okay";   spdif_out_port: port { spdif_out_endpoint: endpoint { remo...

We bought the stm32mp157a-DK1 Board. Problem STlink Utility does not see STM32MP157AAC. Only the debugger is visible.

The debugger returns an error Failed to execute MI command target temote 3333

search a char array within an other char array

hi everyoneI'm trying to search for a certain char array(say char Temp[]) within a lager array in this case, char Rcv[500]. here is my codeint scanRcv(char *Temp){ int ii=0; for(int i=0;i<RcvLength;i++){ while(Rcv[i]==Temp[ii]){ ii++; if(ii==strlen...

How do I enable LinuxPTP PPS Output?

I know that to get PPS output on the Ethernet PPS Pin PG8 that the device tree has to configure the pin for AF11. I also believe that PPS has to be enabled somehow? ​On some embedded Linux systems there is a /sys/class/ptp/ptp0/pps_enable variable to...