RockpiS/dev/libmraa

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       ROCK Pi S >  Development >  Install Libmraa 

Libmraa on ROCK Pi S

Package libmraa-rockpis is in Radxa APT bionic-testing and stretch-testing repositories.

Below is the instructions of how to install libmraa and use it.

Install essential packages

Edit file /etc/apt/sources.list.d/apt-radxa-com.list and add the following:

For Debian Stretch

   deb http://apt.radxa.com/stretch-testing/ stretch main

For Ubuntu bionic

   deb http://apt.radxa.com/bionic-testing/ bionic main

Get the pub key

   wget -O -  apt.radxa.com/stretch-testing/public.key | sudo apt-key add -

Update

   sudo apt-get update && sudo apt-get upgrade

Install essential packages:

   sudo apt-get install -y rockchip-fstab && sudo apt-get install -y rockchip-overlay && sudo apt-get install -y rockpis-dtbo

Install the latest u-boot and kernel:

   apt-get install rockpis-rk-u-boot-latest

Manually run the u-boot flash script

   /usr/local/sbin/rockpis_upgrade_bootloader.sh

Type YES to perform the uboot.img flashing.

Install kernel

   apt-get install linux-base
   apt-get install linux-4.4-rockpis-latest

After installation, check file /boot/extlinux/extlinux.conf. It lists all kernel version installed in ROCK Pi S. The kernel corresponding to the first label is the newest version and the first boot option.

Install libmraa-rockpis

   apt-get install libmraa-rockpis

Enable interface

See ROCK Pi S GPIO pintout. ROCK Pi S has a 26-pin colorful expansion header. Each pin is distinguished by color. mraa define follow:

Hardware V10

16 GPIO:

   PIN03      GPIO2_A2
   PIN05      GPIO2_B0
   PIN07      GPIO2_B3
   PIN09      GPIO4_C4
   PIN11      GPIO4_C2
   PIN12      GPIO4_A3
   PIN13      GPIO4_C6
   PIN15      GPIO4_C5
   PIN16      GPIO4_D2
   PIN18      GPIO4_D4
   PIN19      GPIO1_B0
   PIN21      GPIO1_A7
   PIN22      GPIO4_D5
   PIN23      GPIO1_B1
   PIN24      GPIO1_B2
   PIN26      GPIO1_B2

4 I2C:

   PIN23      I2C0_SDA
   PIN24      I2C0_SCL
   PIN3       I2C1_SCL
   PIN5       I2C1_SDA
   PIN13      I2C2_SDA
   PIN15      I2C2_SCL
   PIN12      I2C3_SCL
   PIN26      I2C3_SDA

2 SPI:

   PIN9       SPI0RX
   PIN11      SPI0TX
   PIN13      SPI0CLK
   PIN15      SPI0CSN
   PIN19      SPI2TX
   PIN21      SPI2RX
   PIN23      SPI2CLK
   PIN24      SPI2CSN

3 UART:

   PIN9       UART0_TX
   PIN11      UART0_RX
   PIN23      UART1_TX
   PIN24      UART1_RX
   PIN19      UART2_RX
   PIN21      UART2_TX

3 PWM:

   PIN22      PWM1
   PIN26      PWM2
   PIN12      PWM3

Development

More introduction of libmraa can look at libmraa official website.