[add] linux i2c example

examples/linux_i2c/.gitignore

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+
+dist
+build
+.config.mk
+.flash.conf.json
+

examples/linux_i2c/SConstruct

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+from pathlib import Path
+import os
+with open(str(Path(os.getcwd())/'..'/'..'/'tools'/'scons'/'project.py')) as f:
+    exec(f.read())

examples/linux_i2c/config_defaults.mk

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+
+# CONFIG_COMPONENT1_ENABLED=y
+CONFIG_TOOLCHAIN_PATH="/opt/gcc-linaro-7.5.0-2019.12-x86_64_arm-linux-gnueabihf/bin"
+CONFIG_TOOLCHAIN_PREFIX="arm-linux-gnueabihf-"
+CONFIG_DEVICE_DRIVER_ENABLED=y
+CONFIG_DEVICE_I2C_ENABLED=y

examples/linux_i2c/main/SConstruct

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+# project_root/src/SConscript
+import os
+# Import the environment from the SConstruct file
+Import('env')
+with open(env['PROJECT_TOOL_S']) as f:
+    exec(f.read())
+
+
+
+SRCS = Glob('src/*.c*')
+INCLUDE = [ADir('include'), ADir('.')]
+PRIVATE_INCLUDE = []
+REQUIREMENTS = ['pthread', "DeviceDriver"]
+STATIC_LIB = []
+DYNAMIC_LIB = []
+DEFINITIONS = []
+DEFINITIONS_PRIVATE = []
+LDFLAGS = []
+LINK_SEARCH_PATH = []
+
+
+env['COMPONENTS'].append({'target':env['PROJECT_NAME'],
+                          'SRCS':SRCS,
+                          'INCLUDE':INCLUDE,
+                          'PRIVATE_INCLUDE':PRIVATE_INCLUDE,
+                          'REQUIREMENTS':REQUIREMENTS,
+                          'STATIC_LIB':STATIC_LIB,
+                          'DYNAMIC_LIB':DYNAMIC_LIB,
+                          'DEFINITIONS':DEFINITIONS,
+                          'DEFINITIONS_PRIVATE':DEFINITIONS_PRIVATE,
+                          'LDFLAGS':LDFLAGS,
+                          'LINK_SEARCH_PATH':LINK_SEARCH_PATH,
+                          'REGISTER':'project'
+                          })

examples/linux_i2c/main/include/test.h

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+#pragma once

examples/linux_i2c/main/src/main.c

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+#include <stdio.h>
+#include <assert.h>
+#include <stdint.h>
+#include <string.h>
+#include "linux_i2c/linuxi2c.h"
+
+LINUXI2CDevice i2cdev;
+
+int main(int argc, char *argv[])
+{
+	char i2c_bus[20] = "/dev/i2c-1";
+	linuxi2c_init_device(&i2cdev);
+	i2cdev.bus = linuxi2c_open(i2c_bus);
+	i2cdev.addr = 0x38;
+
+	uint8_t data[] = {0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff, 0x01, 0x02, 0x03};
+
+	// linuxi2c_write(&i2cdev, 0x05, data, sizeof(data));
+	linuxi2c_primitive_write(&i2cdev, data, 1, data, sizeof(data));
+
+	linuxi2c_close(i2cdev.bus);
+
+	return 0;
+}