sankaramp

hello csnol, thanx for reply, according to your suggestion i changed my application like this.  in this, i just want to connect one GSM-GRPS module through UART2 of MCU1....

Okay thanq I just need one help in writing the code regarding "load the .bin file from spi flash to MCU2 through UART1". Any suggestion will be helpful.. Regards, Sankar

hello sir, i'm trying like this,"in application programming using SD card". is it possible? ref: https://github.com/akospasztor/stm32-bootloader https://www.st.com/content/ccc/resource/technical/document/application_note/group0/6b/6d/66/98/7d/3e/46/cc/DM00282546/files/DM00282546.pdf/jcr:content/translations/en.DM00282546.pdf any suggestions plz thanq Sankar