RockpiE/dev/libmraa - Revision history

Stephen at 03:09, 9 January 2021

2021-01-09T03:09:35Z

Stephen at 03:01, 9 January 2021

2021-01-09T03:01:04Z

Stephen at 03:00, 9 January 2021

2021-01-09T03:00:22Z

Stephen: /* Libmraa on ROCK Pi E */

2021-01-09T02:54:17Z

‎Libmraa on ROCK Pi E

Stephen: /* test gpio */

2021-01-09T02:23:19Z

‎test gpio

Stephen at 01:51, 5 January 2021

2021-01-05T01:51:48Z

Shine: /* Example of running Java */

2020-06-19T06:07:56Z

‎Example of running Java

Shine at 03:54, 19 June 2020

2020-06-19T03:54:44Z

Shine: /* test gpio */

2020-06-15T09:36:43Z

‎test gpio

Shine at 10:44, 12 June 2020

2020-06-12T10:44:14Z

@@ Line 15: / Line 15: @@
 Execute the following commands to add Radxa APT
   rock@rockpie:~$ export DISTRO=bionic-testing      # for Bionic
 or
   rock@rockpie:~$ export DISTRO=buster-testing      # for Buster

@@ Line 103: / Line 103: @@
   rootuuid=6bdd02ee-ae60-404d-99c9-913f3f1bffb1
 then '''reboot'''
 ==== Test ====
@@ Line 391: / Line 390: @@
   /usr/local/share/mraa/examples/
 ==== Development ====

← Older revision		Revision as of 03:00, 9 January 2021
Line 391:		Line 391:

	/usr/local/share/mraa/examples/		/usr/local/share/mraa/examples/
		+
		+
		+	==== Development ====
		+
		+	More introduction of libmraa can look at [http://iotdk.intel.com/docs/master/mraa/index.html libmraa official website].
		+
		+	==== Troubleshooting ====
		+
		+	* Refer [[RockpiE/getting_started/troubleshooting \| Troubleshooting page]]
		+	* Post your issue on the forum: https://forum.radxa.com/c/rockpie

@@ Line 5: / Line 5: @@
      [[rockpiE | ROCK Pi E]] > [[rockpiE/dev | Development]] > [[rockpiE/dev/libmraa | libmraa]]
-= Libmraa on ROCK Pi E =
+=== Libmraa on ROCK Pi E ===
-== Install libmraa ==
+This guide describes how to use libmraa on ROCK Pi E.
-Modify your /etc/apt/sources.list.d/apt-radxa-com.list as follow :
+==== Install essential packages ====
- #deb http://apt.radxa.com/buster-stable/ buster main
+Package libmraa is in the Radxa APT bionic-testing, bionic-stable, buster-testing and buster-stable repositories.
- deb http://apt.radxa.com/buster-testing/ buster main
-Get the pub key :
+ rock@rockpie:~$ export DISTRO=bionic-stable      # for Bionic
-  wget -O -  apt.radxa.com/buster-testing/public.key | sudo apt-key add -
+  rock@rockpie:~$ export DISTRO=bionic-testing      # for Bionic
-Update APT package information :
+ rock@rockpie:~$ export DISTRO=buster-stable      # for Buster
-  sudo apt-get update
+  rock@rockpie:~$ export DISTRO=buster-testing      # for Buster
-Install libmraa :
+Get the pub key
- sudo apt-get install libmraa
-== Enable interface ==
+Install essential packages:
 See ROCK Pi E [[RockpiE/hardware/rockpiE#gpio | GPIO pintout]]. ROCK Pi E has one 40-pin expansion header. Each pin is distinguished by color.
-=== Hardware V1.0/V1.1 ===
+===== Hardware V1.0/V1.1 =====
 GPIO:
   PIN3   GPIO2_A4
@@ Line 94: / Line 105: @@
-== Test ==
+==== Test ====
-=== test gpio ===
+===== test gpio =====
 Use '''mraa-gpio''' to test
@@ Line 143: / Line 154: @@
   rock@rockpie:~$ sudo mraa-gpio set 40 0   //pin40 pull low
-=== test i2c ===
+===== test i2c =====
 Use '''mraa-i2c''' to test, we must have a i2c slave device , for example, we use I2C EEPROM:
@@ Line 163: / Line 174: @@
   rock@rockpie:~$
-=== test spi ===
+===== test spi =====
 fristly, modify /boot/uEnv.txt to enable the spi0, The changes are as follows :
@@ Line 250: / Line 261: @@
     ......
-=== test Uart ===
+===== test Uart =====
 Enable Uart1 for uart test, The changes are as follows :
@@ Line 275: / Line 286: @@
 the receive window will show the data
-=== test adc ===
+===== test adc =====
 Firstly, short pin23 and pin35, Compile mraa example file to test, as follow:
@@ Line 304: / Line 315: @@
-== Compilation example ==
+==== Compilation example ====
-=== Install compiler and project builder ===
+===== Install compiler and project builder =====
 Install '''g++''' compiler and '''cmake''' project builder
@@ Line 340: / Line 351: @@
 After compiling, you can see that C, C + + and Java are generated. Let's take a look at the example of using Java.
-=== Example of running Java ===
+===== Example of running Java =====
 Go to the Java example directory and use the Java command to run the '''.jar''' package.<br/>
 Let's short '''35pin''' and '''23pin''', and then run the '''.jar''' package, and watch the output.
@@ Line 376: / Line 387: @@
   root@rockpie:/usr/local/include/mraa#
-=== More examples ===
+===== More examples =====
 More examples (including examples written in python and c++) can be found at:
   /usr/local/share/mraa/examples/

@@ Line 140: / Line 140: @@
     GPIO2_C6: GPIO
   rock@rockpie:~$
-  rock@rockpie:~$ sudo mraa-gpio set 23 1   //pin40 pull high
+  rock@rockpie:~$ sudo mraa-gpio set 40 1   //pin40 pull high
-  rock@rockpie:~$ sudo mraa-gpio set 23 0   //pin40 pull low
+  rock@rockpie:~$ sudo mraa-gpio set 40 0   //pin40 pull low
 === test i2c ===

@@ Line 105: / Line 105: @@
         SCL1: GPIO I2C
          GND:
-        TXD1: GPIO SPI
+        TXD1: GPIO UART
         TXD2: GPIO UART
          GND:
         RXD2: GPIO UART
-  SPI_CLK_M2: GPIO PWM
+  SPI_CLK_M2: GPIO SPI
     GPIO2_D2: GPIO
-SPI_CSN0_M2: GPIO PWM
+SPI_CSN0_M2: GPIO SPI
          GND:
-  SPI_RXD_M2: GPIO
+  SPI_RXD_M2: GPIO SPI
-     USB20DM: GPIO
+     USB20DM:
          3V3:
-     USB20DP: GPIO
+     USB20DP:
-    GPIO0_D3: GPIO SPI  UART
+    GPIO0_D3: GPIO
          GND:
-    GPIO2_C3: GPIO SPI  UART
+    GPIO2_C3: GPIO
-SPI_CSN1_M0: GPIO
+   GPIO2_B4: GPIO
-    GPIO1_D4: GPIO SPI
+    GPIO1_D4: GPIO
-    GPIO2_A3: GPIO SPI
+    GPIO2_A3: GPIO
          GND:
-    GPIO2_C7: AIO
+    GPIO2_C7:
-  SPI_TXD_M2: GPIO I2C
+  SPI_TXD_M2: GPIO SPI
-    GPIO2_C1: GPIO I2C
+    GPIO2_C1: GPIO
-    GPIO2_C0: GPIO I2C  SPI
+    GPIO2_C0: GPIO
          GND:
-    GPIO2_B7: GPIO I2C  SPI
+    GPIO2_B7: GPIO
-    UART1_RX: GPIO
+    UART1_RX: GPIO UART
-    GPIO2_C2: GPIO SPI
+    GPIO2_C2: GPIO
          GND:
      ADC_IN1: AIO

@@ Line 28: / Line 28: @@
 == Enable interface ==
-See ROCK Pi S GPIO pintout. ROCK Pi E has one 40-pin expansion header. Each pin is distinguished by color.
+See ROCK Pi E [[RockpiE/hardware/rockpiE#gpio | GPIO pintout]]. ROCK Pi E has one 40-pin expansion header. Each pin is distinguished by color.
 === Hardware V1.0/V1.1 ===
@@ Line 184: / Line 184: @@
 use c to test spi,compile spi.c.
-    root@localhost:~# cat spi.c
+    root@rockpie:~# cat spi.c
     #include <signal.h>
     #include <stdlib.h>
@@ Line 240: / Line 240: @@
         return EXIT_FAILURE;
+    }
-    root@localhost:~# gcc spi.c -lmraa
+    root@rockpie:~# gcc spi.c -lmraa
 then short pin15 and pin27 and run a.out
-    root@localhost:~# ./a.out
+    root@rockpie:~# ./a.out
 xaa
 xaa
@@ Line 265: / Line 265: @@
   rock@rockpie:~$
-then reboot and short pin7 and pin32. use ssh connect to rockpi4,we must have 2 windows,one is for send data,anothor is for receive.
+then reboot and short pin7 and pin32. use ssh connect to rockpie,we must have 2 windows,one is for send data,anothor is for receive.
 send command follow:
@@ Line 305: / Line 305: @@
 == More examples ==
-More examples (including examples written in python and java) can be found at:
+More examples (including examples written in python) can be found at:
   /usr/local/share/mraa/examples/