ʾʹõԴ
LED          ------ PB1
I2C1_SCL     ------ PB3
I2C1_SDA     ------ PB4


ʾḶ́
1ϵϵͳʱӣRCHΪʱԴΪ48M
2ʼLEDGPIOʼ״̬Ϊ𣬳ʼI2C1GPIO
3ʼI2C1ʹI2C1ʹ¼жϣ
4ʼNVICʹI2C1жϲжȼ
5LED
6жϷ
   - ַƥʱַƥ־ʹܻжϣ
   - TXIS1ݣݴﵽԤڳʱرջжϣ
   - RXNE1ݣݴﵽԤڳʱرջжϣ
   - NACKF1NACKF־
   - STOPF1STOPF־


ע⣺
LEDʱٿͨš
