Hi, I met a problem using bootloader on pc to wirte program into STM32L432KC via UART.
Here is the process I did :
1,I connect D1/Tx and D0/RX(PA9 and PA10 of STM32L432KC) to CH340 USB to UART board, 5V Vin and GND. USB to PC.
2, I connect 5V to pin 31 of STM32L432KC:PH3\BOOT0 , reset the ic, then pull PH3\BOOT0 = 0V.
The LED do not blinky, which means the stm32L432KC is in boot mode.
3, I opened Flash Loader Demonstrator boot loader, chose the COM port , click next:
The software can not read Flash Mapping, nor the target name.Can not do anything with this.
Checked in ST link Utility, no Read out protection.
So I do not know what is the problem ? Software or hardware ? Nucleo board or CH430 ?