stm32samples/F1:F103/deprecated/chronometer

Chronometer for downhill competitions

Pinout

• PA11/12 - USB

• PA9(Tx),PA10 (debug mode) - USART1 - debug console

• PA2(Tx), PA3 - USART2 - GPS

• PB10(Tx), PB11 - USART3 - LIDAR - TRIG3

• PA1 - PPS signal from GPS (EXTI)

• PA4 - TRIG2 - 12V trigger (EXTI)

• PA13 - TRIG0 - button0 (EXTI)

• PA14 - TRIG1 - button1/laser/etc (EXTI)

• PA15 - USB pullup

• PB8, PB9 - onboard LEDs (0/1)

• PC13 - buzzer

LEDS

• LED0 - shining when there's no PPS signal, fades for 0.25s on PPS
• LED1 - don't shines if no GPS found, shines when time not valid, blinks when time valid

Not implemented yet:

• PA5,6,7 (SCK, MISO, MOSI) - SPI
• PB0 - TRIG4 - ADC channel 8
• PB6/7 (SCL, SDA) - I2C