I use the nrf52832. In the beginning,I can download the code and it works well. And suddenly,Keil told me "No Cortex-M SW Device Found",when I change a new chip it can work. But there 4 chips have been destroyed. I want to konw the reason.
The power is 3.3V,no short circuit and I was used the reference layout/schematic.Today one more chip can't work,I'm going to mad. GIS.pdf I'm used two chips,they communicate with SPI.There is no RESET Circuit,when I download the program I power it again
