Board from www.vcc-gnd.com aka "Blue pill"

Detailed Description

There is a STM32F103C8T6 with:

• one 8 MHz crystal
• one 32768 Hz crystal
• one reset button
• one power LED
• one I/O LED
• two jumpers for BOOT0 and BOOT1
• one USB connector

Board description
#define	HW_DEVICE_HSEHZ   8e6
#define	HW_DEVICE_LSEHZ   32768

Pin definitions
The pin the LED is connected to. The target device name indicates its package, then pin numbers can be used as well as pin names. Note : the LED is on at level 0.
#define	LED   (portc, 13)
#define	LED1   (portc, 13)

Macro Definition Documentation

HW_DEVICE_HSEHZ

#define HW_DEVICE_HSEHZ   8e6

Frequency of the HSE oscillator crystal

Examples

hwa/st/stm32/examples/02-2-clocks/main.c.

HW_DEVICE_LSEHZ

#define HW_DEVICE_LSEHZ   32768

Frequency of the LSE oscillator crystal