STM32F1 ''No target connected''

tanavitman_man · ‎2014-01-18

Posted on January 18, 2014 at 11:21

Hi, I got this error message after I download my code which have remap pin PA13,14,15(JTAG and SWCLK pin) to use as GPIO and TIM2.

Normally I should be able to download new code by get boot pin to high but this time it still get this error even I already get boot pin to high. please help.

#stm32-connected

Tesla DeLorean · ‎2014-01-18

Posted on January 18, 2014 at 18:28

If the BOOT0 trick doesn't work, you'll need to check things like the NRST/NRESET pin and the state of the supplies.

An alternative sign-of-life test is to use USART1 PA9/PA10 at 9600 8E1 in System Loader (BOOT0=H) mode, sending the 0x7F pattern, and looking for a 0x79 response. RealTerm can send such hex values.

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