{"id":1329,"date":"2024-02-09T08:31:53","date_gmt":"2024-02-08T23:31:53","guid":{"rendered":"https:\/\/avancesys.co.jp\/laboratory\/?post_type=article&p=1329"},"modified":"2024-02-09T08:31:53","modified_gmt":"2024-02-08T23:31:53","slug":"%e3%83%a9%e3%82%ba%e3%83%91%e3%82%a4%e3%81%8b%e3%82%89i2c%e3%83%9d%e3%83%bc%e3%83%88%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6can%e9%80%81%e4%bf%a1%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"article","link":"https:\/\/www.avancesys.co.jp\/laboratory\/article\/%e3%83%a9%e3%82%ba%e3%83%91%e3%82%a4%e3%81%8b%e3%82%89i2c%e3%83%9d%e3%83%bc%e3%83%88%e3%82%92%e4%bd%bf%e3%81%a3%e3%81%a6can%e9%80%81%e4%bf%a1%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"\u30e9\u30ba\u30d1\u30a4\u304b\u3089I2C\u30dd\u30fc\u30c8\u3092\u4f7f\u3063\u3066CAN\u9001\u4fe1\u3059\u308b\u65b9\u6cd5"},"content":{"rendered":"\n

\u3053\u3093\u306b\u3061\u306f\u3001\u30bd\u30e9\u3067\u3059\u3002<\/p>\n\n\n\n

\u30e9\u30ba\u30d1\u30a4\u3082\u3044\u308d\u3093\u306a\u3053\u3068\u304c\u3067\u304d\u3066\u4fbf\u5229\u3067\u3059\u306d\u3002
\u591a\u304f\u306e\u6a5f\u80fd\u3092\u4ed8\u3051\u305f\u3044\u3068\u3053\u308d\u3067\u3059\u304c\u3001\u6a5f\u5668\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3001
\u300c\u30dd\u30fc\u30c8\u304c\u8db3\u308a\u306a\u3044\u300d
\u300c\u305d\u3082\u305d\u3082\u30dd\u30fc\u30c8\u304c\u306a\u3044\u300d
\u3068\u3044\u3046\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3088\u306d\uff1f<\/p>\n\n\n\n

\u305d\u3093\u306a\u3068\u304d\u306f\u3001\u5909\u63db\u57fa\u677f\u3092\u4f7f\u7528\u3057\u3066\u9055\u3046\u6a5f\u80fd\u306e\u30dd\u30fc\u30c8\u304b\u3089\u5bfe\u5fdc\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\u4eca\u56de\u306f\u3001\u305d\u306e\u4e00\u3064\u3068\u3057\u3066\u3001I2C\u30dd\u30fc\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3001CAN\u9001\u4fe1\u3092\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u69cb\u6210<\/p><\/blockquote><\/figure>\n\n\n\n

\u25a0\u6a5f\u5668\u69cb\u6210<\/p>\n\n\n\n

\u6a5f\u5668<\/td>\u30e9\u30ba\u30d1\u30a44B<\/td><\/td><\/tr>
\u5909\u63db\u57fa\u677f\u3000\u3000<\/td>I2C CAN \u5909\u63db\u30dc\u30fc\u30c9<\/td>https:\/\/www.switch-science.com\/products\/7437<\/a><\/td><\/tr>
\u8a00\u8a9e<\/td>C\u8a00\u8a9e<\/td><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u25a0CAN\u69cb\u6210<\/p>\n\n\n\n

CAN\u901a\u4fe1\u901f\u5ea6<\/td>500kbps<\/td>\u5909\u63db\u57fa\u677f\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u30c7\u30d5\u30a9\u30eb\u30c8\u8a2d\u5b9a\u3092\u305d\u306e\u307e\u307e\u4f7f\u7528\u3057\u307e\u3059\u3002
\u203b\u5909\u66f4\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u4ed5\u69d8\u306b\u57fa\u3065\u304d\u3001\u30a2\u30c9\u30ec\u30b9\u3068\u901a\u4fe1\u901f\u5ea6\u3092\u9001\u308a\u3001\u8a2d\u5b9a\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/td><\/tr>
CAN\u30a2\u30c0\u30d7\u30bf<\/td>Kvaser Leaf Light v2\u3000\u3000\u3000\u3000<\/td><\/td><\/tr>
\u78ba\u8a8d\u7528PC\uff08OS\uff09\u3000\u3000\u3000<\/td>Windows10 64bit<\/td><\/td><\/tr>
\u78ba\u8a8d\u7528\u30c4\u30fc\u30eb<\/td>Candy<\/td>\u81ea\u793e\u958b\u767a\u306eCAN\u30a2\u30d7\u30ea\u3067\u3059\u3002
\u203b\u3042\u3068\u304c\u304d\u306b\u3001\u7d39\u4ecb\u30da\u30fc\u30b8\u306e\u30ea\u30f3\u30af\u3092\u8a18\u8f09\u3057\u3066\u304a\u304d\u307e\u3059\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
<\/div>\n\n\n\n

\u69cb\u6210\u56f3<\/p><\/blockquote><\/figure>\n\n\n\n

\u74b0\u5883\u306e\u69cb\u6210\u3092\u4e0b\u8a18\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

<\/p>\n\n\n\n

<\/div>\n\n\n\n

\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/p><\/blockquote><\/figure>\n\n\n\n

\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002 <\/p>\n\n\n\n

CAN\u9001\u4fe1\u30c7\u30fc\u30bf(CANID\u3001DLC\u3001DATA\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0)\u3092\u30d0\u30c3\u30d5\u30a1\u3078\u30bb\u30c3\u30c8\u3057\u307e\u3059\u3002
linux\u306eI2C\u30c7\u30d0\u30a4\u30b9\u30af\u30e9\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3001I2C\u30dd\u30fc\u30c8\u304b\u3089\u9001\u4fe1\u3057\u307e\u3059\u3002
CAN\u9001\u4fe1\u30c7\u30fc\u30bf\u306f\u3001I2C CAN \u5909\u63db\u30e2\u30b8\u30e5\u30fc\u30eb\u306e\u4ed5\u69d8\u306b\u3088\u308a\u300116\u30d0\u30a4\u30c8\u5206\u306e\u30c7\u30fc\u30bf\u3067\u3001
\u6700\u5f8c\u306f\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u304c\u5fc5\u9808\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u3010\u30e1\u30a4\u30f3\u95a2\u6570\u3011
CAN\u9001\u4fe1\u30c7\u30fc\u30bf\u306e\u4f5c\u6210\u3068\u9001\u4fe1\u3092\u884c\u3044\u307e\u3059\u3002<\/p>\n\n\n\n

#include <stdint.h>\n#include <stdio.h>\n#include <string.h>\n#include <stdlib.h>\n#include <fcntl.h>\n#include <unistd.h>\n#include <sys\/ioctl.h>\n#include <linux\/i2c-dev.h>\n#include <linux\/i2c.h>\n\n#define DEV_NAME = "\/dev\/i2c-1"\n\nint8_t i2c_send(uint8_t dev_addr, uint8_t reg_addr, const uint8_t* data, uint16_t length);\nint8_t makeCheckSum(int8_t *dta, int8_t len);\n\n\/*** \u30e1\u30a4\u30f3 ***\/\nvoid main(void)\n{\n\u3000int8_t ret;\n\u3000uint8_t send_data[16];\n\u3000\n\u3000\/\/ \u9001\u4fe1\u30c7\u30fc\u30bf\u306e\u4f5c\u6210\n\u3000send_data[0]  = 0;\n\u3000send_data[1]  = 0;\n\u3000send_data[2]  = 0;\n\u3000send_data[3]  = 0x80; \/\/ CANID\n\u3000\n\u3000send_data[4]  = 0;\n\u3000send_data[5]  = 0;\n\u3000send_data[6]  = 8;    \/\/ CAN\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\n\u3000\n\u3000send_data[7]  = 0x11; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf1\n\u3000send_data[8]  = 0x22; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf2\n\u3000send_data[9]  = 0x33; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf3\n\u3000send_data[10] = 0x44; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf4\n\u3000send_data[11] = 0x55; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf5\n\u3000send_data[12] = 0x66; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf6\n\u3000send_data[13] = 0x77; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf7\n\u3000send_data[14] = 0x88; \/\/ \u9001\u4fe1\u30c7\u30fc\u30bf8\n\u3000\n\u3000send_data[15] = get_check_sum(send_data,15); \/\/ \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\n\u3000\n\u3000\/\/ \u30c7\u30fc\u30bf\u9001\u4fe1\n\u3000ret = i2c_send(0x25, 0x30, send_data, 16);\n}\n<\/code><\/pre><\/div>\n\n\n\n
\u3010\u30c7\u30fc\u30bf\u9001\u4fe1\u95a2\u6570\u3011
 \u9001\u4fe1\u3057\u305f\u3044\u30c7\u30fc\u30bf\u3092I2C\u3067\u9001\u4fe1\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\/*** I2C\u30b9\u30ec\u30fc\u30d6\u30c7\u30d0\u30a4\u30b9\u306b\u30c7\u30fc\u30bf\u9001\u4fe1 ***\/\nint8_t i2c_send(uint8_t dev_addr, uint8_t reg_addr, const uint8_t* data, uint16_t length) \n{\n\u3000\/\/ I2C\u30c7\u30d0\u30a4\u30b9\u3092\u30aa\u30fc\u30d7\u30f3\u3059\u308b\n\u3000int32_t fd = open(DEV_NAME, O_RDWR);\n\u3000if (fd == -1) \n\u3000{\n\u3000\u3000return FALSE;\n\u3000}\n\u3000\n\u3000\/\/ I2C-Write\u7528\u306e\u30d0\u30c3\u30d5\u30a1\u3092\u6e96\u5099\u3059\u308b\n\u3000uint8_t* buffer = (uint8_t*)malloc(length + 1);\n\u3000if (buffer == NULL) \n\u3000{\n\u3000\u3000close(fd);\n\u3000\u3000return FALSE;\n\u3000}\n\u3000\n\u3000buffer[0] = reg_addr;                   \/\/ 1\u30d0\u30a4\u30c8\u76ee\u306b\u30ec\u30b8\u30b9\u30bf\u30a2\u30c9\u30ec\u30b9\u3092\u30bb\u30c3\u30c8\n\u3000memcpy(&buffer[1], send_data, length);  \/\/ 2\u30d0\u30a4\u30c8\u76ee\u4ee5\u964d\u306b\u30c7\u30fc\u30bf\u3092\u30bb\u30c3\u30c8\n\u3000\n\u3000\/\/ I2C-Write\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u4f5c\u6210\u3059\u308b\n\u3000struct i2c_msg message = { dev_addr, 0, length + 1, buffer };\n\u3000struct i2c_rdwr_ioctl_data ioctl_data = { &message, 1 };\n\u3000\n\u3000\/\/ I2C-Write\u3092\u884c\u3046\n\u3000if (ioctl(fd, I2C_RDWR, &ioctl_data) != 1) \n\u3000{\n\u3000\u3000free(buffer);\n\u3000\u3000close(fd);\n\u3000\u3000return FALSE;\n\u3000}\n\u3000\n\u3000free(buffer);\n\u3000close(fd);\n\u3000\n\u3000return TRUE;\n}\n<\/code><\/pre><\/div>\n\n\n\n
\u3010\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u95a2\u6570\u3011
 \u9001\u4fe1\u30c7\u30fc\u30bf\u306b\u5fc5\u8981\u306a\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
\/*** \u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u8a08\u7b97 ***\/\nstatic uint8_t get_check_sum(uint8_t *data, uint8_t len)\n{\n\u3000unsigned long sum = 0;\n\u3000for(int i=0; i<len; i++)\n\u3000{\n\u3000\u3000sum += (data[i] & 0xff);\n\u3000}\n\u3000if(sum > 0xff)\n\u3000{\n\u3000\u3000sum = ~sum;\n\u3000\u3000sum += 1;\n\u3000}\n\u3000\n\u3000sum  = sum & 0xff;\n\u3000return (uint8_t)sum;\n}\n<\/code><\/pre><\/div>\n\n\n\n
<\/div>\n\n\n\n
\u30b3\u30f3\u30d1\u30a4\u30eb\u3068\u52d5\u4f5c\u78ba\u8a8d<\/p><\/blockquote><\/figure>\n\n\n\n
\u30b3\u30f3\u30d1\u30a4\u30eb\u3057\u3001\u5b9f\u884c\u30d5\u30a1\u30a4\u30eb\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002<\/p>\n\n\n\n
  $gcc -o i2c_test i2c_test.c 
  $.\/i2c_test<\/p>\n\n\n\n
<\/div>\n\n\n\n
\u5b9f\u884c\u7d50\u679c<\/p><\/blockquote><\/figure>\n\n\n\n
CAN\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3059\u308b\u30c4\u30fc\u30eb\u3067\u5024\u3092\u78ba\u8a8d\u3057\u3001 
\u9001\u4fe1\u3057\u305f\u30c7\u30fc\u30bf\u304c\u53d6\u5f97\u3067\u304d\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n\n\n\n
\"\"<\/figure>\n\n\n\n
<\/div>\n\n\n\n
\u3042\u3068\u304c\u304d<\/p><\/blockquote><\/figure>\n\n\n\n
\u30e9\u30ba\u30d1\u30a4\u306eI2C\u30dd\u30fc\u30c8\u3092\u4f7f\u3063\u3066CAN\u901a\u4fe1\u306e\u78ba\u8a8d\u304c\u3067\u304d\u307e\u3057\u305f\u3002 
\u4eca\u56de\u306e\u5909\u63db\u306b\u9650\u3089\u305a\u3001\u4ed6\u306b\u3082\u5909\u63db\u3057\u3066\u901a\u4fe1\u3059\u308b\u65b9\u6cd5\u306f\u3001\u591a\u3005\u3042\u308b\u3068\u601d\u3044\u307e\u3059\u3002 
\u8208\u5473\u304c\u3042\u308b\u65b9\u306f\u3001\u63a2\u3057\u3066\u307f\u308b\u306e\u306f\u3069\u3046\u3067\u3057\u3087\u3046\u304b\u3002 <\/p>\n\n\n\n
\u78ba\u8a8d\u306b\u4f7f\u7528\u3057\u305f\u81ea\u793e\u958b\u767a\u30c4\u30fc\u30eb\u306eCandy\u306f\u3001\u4ee5\u4e0b\u3067\u7d39\u4ecb\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n
\u7b2c1\u56de Candy \u301c \u30e1\u30c3\u30bb\u30fc\u30b8\u9001\u53d7\u4fe1 \u301c<\/td>https:\/\/avancesys.co.jp\/laboratory\/article\/%e7%ac%ac1%e5%9b%9e-candy-%e3%80%9c-%e3%83%a1%e3%83%83%e3%82%bb%e3%83%bc%e3%82%b8%e9%80%81%e5%8f%97%e4%bf%a1-%e3%80%9c\/<\/a><\/td><\/tr>
\u7b2c2\u56de Candy \u301c \u901a\u4fe1\u8a2d\u5b9a \u301c<\/td>https:\/\/avancesys.co.jp\/laboratory\/article\/%e7%ac%ac2%e5%9b%9e-candy-%e3%80%9c-%e9%80%9a%e4%bf%a1%e8%a8%ad%e5%ae%9a-%e3%80%9c\/<\/a><\/td><\/tr>
\u7b2c3\u56de Candy \u301c \u30ed\u30b0\u8a18\u9332 \u301c<\/td>https:\/\/avancesys.co.jp\/laboratory\/article\/%e7%ac%ac3%e5%9b%9e-candy-%e3%80%9c-%e3%83%ad%e3%82%b0%e8%a8%98%e9%8c%b2-%e3%80%9c\/<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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