Nascs at 01:51, 6 June 2023

2023-06-06T01:51:55Z

Nascs at 09:21, 5 June 2023

2023-06-05T09:21:03Z

Nascs: Created page with "{{rockpi4_header}} {{Languages|Rock3/dev/libmraa_cm3_io}} ROCK 3 > Development > Install Libmraa === En..."

2023-06-05T09:16:53Z

Created page with "{{rockpi4_header}} {{Languages|Rock3/dev/libmraa_cm3_io}} ROCK 3 > Development > Install Libmraa === En..."

New page

{{rockpi4_header}}

{{Languages|Rock3/dev/libmraa_cm3_io}}

[[rock3 | ROCK 3]] > [[rock3/dev | Development]] > [[rock3/dev/libmraa_cm3_io | Install Libmraa ]]

=== Enable interface ===
See Radxa CM3 IO [[https://wiki.radxa.com/Rock3/CM3/IO/GPIO | GPIO pinout]]. ROCK 4 has a 40-pin expansion header. Each pin is distinguished by color. mraa define follow:

27 GPIO:
PIN03 GPIO0_B6
PIN05 GPIO0_B5
PIN07 GPIO3_D5
PIN11 GPIO0_C7
PIN13 GPIO0_B7
PIN15 GPIO0_C3
PIN19 GPIO4_B2
PIN21 GPIO4_B0
PIN23 GPIO4_B3
PIN27 GPIO4_B4
PIN29 GPIO4_B1
PIN31 GPIO0_C5
PIN33 GPIO0_C6
PIN35 GPIO3_D0
PIN37 GPIO0_C2
PIN08 GPIO0_D1
PIN10 GPIO0_D0
PIN12 GPIO3_C7
PIN16 GPIO3_D4
PIN18 GPIO3_D3
PIN22 GPIO3_C6
PIN24 GPIO4_A6
PIN28 GPIO4_B5
PIN32 GPIO4_C0
PIN36 GPIO4_A7
PIN38 GPIO3_D2
PIN40 GPIO3_D1

3 I2C:
PIN3 I2C2_SDA_M0
PIN5 I2C2_SCL_M0
PIN19 I2C4_SDA_M0
PIN23 I2C4_SCL_M0
PIN29 I2C2_SDA_M1
PIN31 I2C2_SCL_M1
2 SPI:
PIN3 SPI0_MOSI_M0
PIN5 SPI0_CLK_M0
PIN31 SPI0_MISO_M0
PIN33 SPI0_CS0_M0
PIN19 SPI0_CS0_M0
PIN31 SPI3_MISO_M0
PIN7 SPI3_CLK_M0
PIN33 SPI3_CS0_M0
1 UART:
PIN8 UART2_TX_M0
PIN10 UART2_RX_M0
9 PWM:
PIN3 PWM2_M1
PIN5 PWM1_M1
PIN11 PWM0_M1
PIN13 PWM0_M0
PIN15 PWM4
PIN31 PWM6
PIN33 PWM7_IR
PIN37 PWM3_IR
PIN32 PWM11_IR_M1

1 ADC:
PIN26 SARADC_VIN3

=== Test ===
==== GPIO Test ====

Use '''mraa-gpio''' tool to test

radxa@radxa-cm3-io:~$ sudo mraa-gpio list
[sudo] password for radxa:
01 3V3:
02 5V:
03 SDA2: GPIO I2C
04 5V:
05 SCL2: GPIO I2C
06 GND:
07 GPIO3_D5: GPIO
08 TXD2: GPIO UART
09 GND:
10 RXD2: GPIO UART
11 PWM0_M0: GPIO PWM
12 GPIO3_A7: GPIO
13 PWM0_M1: GPIO PWM
14 GND:
15 PWM4: GPIO PWM
16 GPIO3_D4: GPIO
17 3V3:
18 GPIO3_D3: GPIO
19 SPI3_MOSI_M: GPIO SPI UART
20 GND:
21 SPI3_MISO_M: GPIO SPI UART
22 GPIO3_C6: GPIO
23 SPI1CLK_M0: GPIO SPI UART
24 SPI3_CS0_M0: GPIO SPI
25 GND:
26 SARADC: AIO
27 SDA2_M1: GPIO I2C
28 SCL2_M1: GPIO I2C
29 SDO2,SPI3_C: GPIO I2C SPI
30 GND:
31 SDA6,SPI0_M: GPIO I2C SPI
32 PWM11_IR_M1: GPIO
33 SPI0_SC0_M0: GPIO SPI
34 GND:
35 GPIO3_D0: GPIO
36 SPI3_SC1_M0: GPIO
37 PWM3_IR: GPIO
38 GPIO3_D2: GPIO
39 GND:
40 GPIO3_D1: GPIO

radxa@radxa-cm3-io:~$ sudo mraa-gpio set 40 1 //pin40 pull high
radxa@radxa-cm3-io:~$ sudo mraa-gpio set 40 0 //pin40 pull low

==== I2C Test ====
Firstly, use rsetup command to enable i2c2, i2c4

Then, use '''mraa-i2c''' tool to test,we must have a i2c slave device,for example,we use I2C led(0x20):

radxa@radxa-cm3-io:~$ sudo mraa-i2c list
Bus 0: id=02 type=linux default
Bus 1: id=04 type=linux
radxa@radxa-cm3-io:~$ sudo i2cdetect -r -y 0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- UU -- -- --
20: UU -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: 50 51 52 53 54 55 56 57 -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- --

then download the test example [https://github.com/nascs/sample_code/blob/main/mraa/c/led_i2c_blink.c led_i2c_blink]
radxa@radxa-cm3-io:~$ gcc i2c_led_blink.c -lmraa -o i2c_led_blink
radxa@radxa-cm3-io:~$ sudo ./i2c_led_blink

==== SPI Test ====
Firstly, use rsetup command to enable spi0,
compile the example file /usr/local/share/mraa/examples/c/spi.c
then short pin2 and pin31 and run the ./a.out
radxa@radxa-cm3-io:~$ gcc /usr/local/share/mraa/examples/c/spi.c -lmraa
radxa@radxa-cm3-io:~$ sudo ./a.out

0xaa
0xaa
......

==== PWM test ====

Use c program in /usr/local/share/mraa/examples/c/pwm.c to test:

Modify the macro PWM in /usr/local/share/mraa/examples/c/pwm.c as follows to test PWM0. To test PWM1, change #define PWM 11 to #define PWM 13.

===More examples===
More examples (including examples written in python and java) can be found at:

/usr/local/share/mraa/examples/

← Older revision		Revision as of 01:51, 6 June 2023
Line 3:		Line 3:
	{{Languages\|Rock3/dev/libmraa_cm3_io}}		{{Languages\|Rock3/dev/libmraa_cm3_io}}

−	[[rock3 \| ROCK 3]] > [[rock3/dev \| Development]] > [[rock3/dev/libmraa_cm3_io \| ~~Install~~ Libmraa ]]	+	[[rock3 \| ROCK 3]] > [[rock3/dev \| Development]] > [[rock3/dev/libmraa_cm3_io \| Libmraa on cm3 io]]

← Older revision		Revision as of 09:21, 5 June 2023
Line 5:		Line 5:
	[[rock3 \| ROCK 3]] > [[rock3/dev \| Development]] > [[rock3/dev/libmraa_cm3_io \| Install Libmraa ]]		[[rock3 \| ROCK 3]] > [[rock3/dev \| Development]] > [[rock3/dev/libmraa_cm3_io \| Install Libmraa ]]

		+
		+	=== Functional interface ===
		+	For function interface of libmraa, you can refer to the folder "/usr/local/include/"

	=== Enable interface ===		=== Enable interface ===

Rock3/dev/libmraa-cm3-io - Revision history

Nascs at 01:51, 6 June 2023

Nascs at 09:21, 5 June 2023

Nascs: Created page with "{{rockpi4_header}} {{Languages|Rock3/dev/libmraa_cm3_io}} ROCK 3 > Development > Install Libmraa === En..."