CooCox Embedded Pi, User Manual, Page: 12 / 47

11
ICSP.1 SPI.MISO PB14 PB14/SPI2_MISO/USART3_RTS/TIM
1_CH2N
ICSP.2 NC NC
ICSP.3 SPI.SCK PB13 PB13/SPI2_SCK/USART3_CTS/TIM1
_CH1N
ICSP.4 SPI.MOSI PB15 PB15/SPI2_MOSI/TIM1_CH3N
ICSP.5 NC NC
ICSP.6 GND NC
3.5.4 Digital section
Arduino
TM
form-factor compatible interfaces include 16 digital IOs, which can also access 1 UART,
1 SPI, and 6 PWM signals by multiplexing. Embedded Pi has full compliance with Arduino
TM
on
these pins. The specific IO mapping of the digital pins are as below:
Table 3-3 IO mapping of Arduino
TM
form-factor digital interfaces
Pin ID Arduino
TM
Function STM32F103 IO MAP MCU Peripheral Function
0 UART.RX PC11 PC11/USART3_RX
1 UART.TX PC10 PC10/USART3_TX
2 EXT.INT PC12 PC12/USART3_CK
3 EXT.INT / PWM PC6 PC6/TIM3_CH1
4 PC7 PC7/TIM3_CH2
5 PWM PC8 PC8/TIM3_CH3
6 PWM PC9 PC9/TIM3_CH4
7 PD2 PD2/TIM3_ETR
8 PA15 PA15/JTDI/TIM2_CH1_ETR/SPI1_NSS
9 PWM PA8 PA8/USART1_CK/TIM1_CH1/MCO
10 SPI.CS PB12 PB12/SPI2_NSS/I2C2_SMBAI/USART3_CK
/TIM1_BKIN
11 SPI.MOSI PB15 PB15/SPI2_MOSI/TIM1_CH3N
12 SPI.MISO PB14 PB14/SPI2_MISO/USART3_RTS/TIM1_CH
2N
13 SPI.CLK PB13 PB13/SPI2_SCK/USART3_CTS/TIM1_CH1
N