Arduino for STM32

Hi Steve,I checked the test sketch on the Maple mini Board, everything works with quartz, but it doesn't work without quartz

#define USE_HSI_CLOCK 1

void setup() {
// put your setup code here, to run once:
pinMode(PA0,OUTPUT);
pinMode(PA1,OUTPUT);
}

void loop() {
// put your main code here, to ...

ok, I'll try it

yep, the board is custom

I use a processor without usb. Programming via st-link v2
#define USE_HSI_CLOCK 1

void setup() {
// put your setup code here, to run once:
pinMode(PA0,OUTPUT);
pinMode(PA1,OUTPUT);
}

void loop() {
// put your main code here, to run repeatedly:
digitalWrite(PA0,HIGH);
digitalWrite(PA1,HIGH ...

I just tried adding but it didn't help, the processor doesn't work. I use Roger's core

Hi Steve, thanks,I'll try it

Hello everyone, coul'd you please tell me how to initialize the internal clock generator when using generic f103c8t6 in arduino ide 1.8.10?