CooCox Embedded Pi, User Manual, Page: 15 / 47

14
32 SPI.SS PA4 PA4/SPI1_NSS/USART2_CK/ADC4
33 SPI.MOSI PA7 PA7/SPI1_MOSI/ADC7/TIM3_CH2/TI
M1_CH1N
34 SPI.MISO PA6 PA6/SPI1_MISO/ADC6/TIM3_CH1/TI
M1_BKIN
35 SPI.SCK PA5 PA5/SPI1_SCK/ADC5
36 PC13 PC13/ANT1_TAMP
37 PB5 PB5/I2C1_SMBAI/TIM3_CH2/SPI1_M
OSI
38 I2C.SDA PB11 PB11/I2C2_SDA/USART3_RX/TIM2_C
H4
39 I2C.SCL PB10 PB10/I2C2_SCL/USART3_TX/TIM2_C
H3
3.7 Raspberry Pi Connector
Raspberry Pi Connector (JP5) includes 17 digital IOs, which also have the function of IIC, SPI, or
UART. As the Arduino
TM
form-factor compatible interfaces include only 16 digital IOs, pin 26 of
the Raspberry Pi is ignored on Embedded Pi. Below is the IO remapping of Raspberry Pi interfaces
on Embedded Pi board.
Table 3-7 IO remapping of Raspberry Pi interfaces
Note: Dn (n=1.2.3 …) stands for Digital Pin x.
Raspberry-Pi
Interface Pin ID
Raspberry-Pi Interface Function Embedded Pi Pin remap
1 3.3V Power 3.3V Power
2 5V Power 5V Power
3 GPIO0/SDA D14
4 5V Power NC
5 GPIO1/SCL D15
6 GND GND
7 GPIO4/GPCLK0 D9
8 GPIO14/TXD D1
9 GND NC