{"id":3307,"date":"2013-06-01T08:10:40","date_gmt":"2013-05-31T23:10:40","guid":{"rendered":"http:\/\/mkusunoki.net\/?p=3307"},"modified":"2013-12-06T21:57:51","modified_gmt":"2013-12-06T12:57:51","slug":"arduino-%e3%81%a7-spi-%e8%bb%a2%e9%80%81%e3%83%86%e3%82%b9%e3%83%88","status":"publish","type":"post","link":"https:\/\/mkusunoki.net\/?p=3307","title":{"rendered":"Arduino \u3067 SPI \u8ee2\u9001\u30c6\u30b9\u30c8"},"content":{"rendered":"

\"2013-05-31<\/a><\/p>\n

\n\u3066\u3063\u3068\u308a\u65e9\u304f\u52d5\u4f5c\u78ba\u8a8d\u3059\u308b\u306e\u306b\u4fbf\u5229\u306a\u306e\u3067\u3001Arduino \u3088\u304f\u4f7f\u3044\u307e\u3059\u3002IN-12b \u30cb\u30ad\u30b7\u30fc\u7ba1 8 \u6841\u8868\u793a\u306b\u4f7f\u3046\u306e\u3067\u3059\u304c\u3001\u8868\u793a\u3055\u305b\u308b\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3059\u308b\u30dd\u30fc\u30c8\u3092 3\u3064\u7528\u610f\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u307e\u3059\u3002 UART, TWI, SPI \u3067\u3059\u3002\u4eca\u56de\u306f\u4e00\u756a\u7c21\u5358\u306a SPI \u304b\u3089\u3067\u3059\u3002\n<\/p>\n

\n\u30de\u30b9\u30bf\u30fc\u5074\u306f\u3001 1\u79d2\u6bce\u306b SS \u3092 LOW \u2192 SPI\u9001\u4fe1(\u6570\u30d0\u30a4\u30c8) \u2192 SS \u3092 HIGH \u3092\u7e70\u308a\u8fd4\u3059\u3060\u3051\u3002\n<\/p>\n

\r\n#include <SPI.h>\r\n\r\nchar val = 'A';\r\n\r\nvoid setup() {\r\n  \r\n  pinMode(10, OUTPUT);\r\n  SPI.begin();\r\n  SPI.setDataMode(SPI_MODE0);\r\n  SPI.setClockDivider(SPI_CLOCK_DIV32);\r\n}\r\n\r\nvoid loop() {\r\n\r\n  digitalWrite(10, LOW);\r\n  for(char i = 0; i < 4; i++) {\r\n    SPI.transfer(val + i);\r\n  }\r\n  SPI.transfer('\\r');\r\n  digitalWrite(10, HIGH);  \r\n\r\n  if(val++ > 0x58) {\r\n    val = 'A';\r\n  }\r\n  delay(1000);\r\n}\r\n<\/pre>\n
\n\u30b9\u30ec\u30fc\u30d6\u5074\u306f\u3001\u53d7\u4fe1\u30c7\u30fc\u30bf\u3092\u5272\u308a\u8fbc\u307f\u51e6\u7406\u3067\u53d6\u308a\u8fbc\u3093\u3067\u3001\u6539\u884c\u6765\u305f\u3089\u6db2\u6676\u306b\u8868\u793a\u3059\u308b\u3060\u3051\u306e\u51e6\u7406\u3067\u3059\n<\/p>\n
#include 
\n#include 
\n#include <\/p>\n
int col = 0;
\nLiquidCrystal lcd(2, 3, 4, A0, A1, A2, A3);
\nchar lcdf = 0;
\nString strSPI = “”;
\nboolean strSPIcomplete = false;
\nint charcnt = 0; <\/p>\n
\/\/ —————————————————————————–
\n\/\/ — Interrupt Service Routine (SPI transfer complete)
\n\/\/ —————————————————————————–
\nISR(SPI_STC_vect) {
\n  char ch;<\/p>\n
  ch = SPDR;
\n  charcnt++;
\n  strSPI += ch;
\n  if(ch == ‘\\r’) {
\n    strSPIcomplete = true;
\n  }
\n}<\/p>\n
\/\/ —————————————————————————–
\n\/\/ — Setup
\n\/\/ —————————————————————————–
\nvoid setup() {<\/p>\n
  pinMode(A0, OUTPUT);
\n  pinMode(A1, OUTPUT);
\n  pinMode(A2, OUTPUT);
\n  pinMode(A3, OUTPUT);
\n  pinMode(2, OUTPUT);
\n  pinMode(3, OUTPUT);
\n  pinMode(4, OUTPUT);<\/p>\n
  \/\/ initialize SPI
\n  pinMode(SS, INPUT);
\n  pinMode(SCK, INPUT);
\n  pinMode(MOSI, INPUT);
\n  pinMode(MISO, OUTPUT);
\n  \/\/ SPI slave mode
\n  SPCR &= ~(1<\nSPI \u8ee2\u9001\u306e\u5834\u5408\u30af\u30ed\u30c3\u30af\u306f\u3001CPU \u30af\u30ed\u30c3\u30af(\u4eca\u56de\u306f 16MHz)\u306e 1\/4 \u3060\u3063\u305f\u304b\u3001\u305d\u308c\u4ee5\u4e0b\u3067\u4f7f\u7528\u3059\u308b\u306e\u304c\u63a8\u5968\u3068\u8a18\u61b6\u306b\u3042\u308a\u307e\u3057\u3066\u30de\u30b9\u30bf\u30fc\u5074\u306b\u306f   SPI.setClockDivider(SPI_CLOCK_DIV32); \u3068\u3044\u3046\u8a18\u8ff0\u3092\u5165\u308c\u3066\u307e\u3059\u3002\u6700\u521d\u306f 8 \u5206\u5468\u306a\u3069\u5165\u308c\u3066\u3001\u30c7\u30fc\u30bf\u6b20\u843d\u3057\u305f\u306e\u3067\u6700\u7d42\u7684\u306b 32 \u5206\u5468\u3067\u3059\u3002\u30b8\u30e3\u30f3\u30d7\u30ef\u30a4\u30e4\u3067\u63a5\u7d9a\u3057\u305f\u3060\u3051\u306a\u306e\u3067\u3053\u3093\u306a\u3082\u3093\u3068\u3044\u3046\u3053\u3068\u306b\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046\u3002\n<\/p>\n
\n\u305f\u3060\u3001SS \u30d4\u30f3\u3092 1 \u30d0\u30a4\u30c8\u8ee2\u9001\u6bce\u306b LOW – HIGH \u30c8\u30b0\u30eb\u3055\u305b\u308b\u3068\u3001\u30af\u30ed\u30c3\u30af 16MHz \u3067\u3082\u554f\u984c\u306a\u304f\u8ee2\u9001\u51fa\u6765\u307e\u3057\u305f\u3002SS \u304c LOW \u304b\u3089 HIGH \u306b\u306a\u308b\u3068\u30b9\u30ec\u30fc\u30d6\u5074\u306e\u53d7\u4fe1\u30ed\u30b8\u30c3\u30af\u306e\u30ea\u30bb\u30c3\u30c8\u304c\u304b\u304b\u308b\u3068\u30c7\u30fc\u30bf\u30b7\u30fc\u30c8\u306b\u306f\u3042\u308b\u306e\u3067\u3059\u304c\u3053\u308c\u306e\u305b\u3044\u3067\u3057\u3087\u3046\u304b\uff1f\uff1f \u307e\u3041\u3001\u3053\u308c\u306f\u60f3\u5b9a\u3068\u9055\u3046\u4f7f\u3044\u65b9\u306a\u306e\u3067\u6df1\u304f\u306f\u8ffd\u3044\u307e\u305b\u3093\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u3066\u3063\u3068\u308a\u65e9\u304f\u52d5\u4f5c\u78ba\u8a8d\u3059\u308b\u306e\u306b\u4fbf\u5229\u306a\u306e\u3067\u3001Arduino \u3088\u304f\u4f7f\u3044\u307e\u3059\u3002IN-12b \u30cb\u30ad\u30b7\u30fc\u7ba1 8 \u6841\u8868\u793a\u306b\u4f7f\u3046\u306e\u3067\u3059\u304c\u3001\u8868\u793a\u3055\u305b\u308b\u30c7\u30fc\u30bf\u3092\u53d7\u4fe1\u3059\u308b\u30dd\u30fc\u30c8\u3092 3\u3064\u7528\u610f\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u307e\u3059\u3002 UART, TWI, SPI \u3067 … “Arduino \u3067 SPI \u8ee2\u9001\u30c6\u30b9\u30c8” \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[7],"tags":[107,232],"class_list":["post-3307","post","type-post","status-publish","format-standard","hentry","category-kousaku","tag-arduino-uno","tag-spi"],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mkusunoki.net\/index.php?rest_route=\/wp\/v2\/posts\/3307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mkusunoki.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mkusunoki.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mkusunoki.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/mkusunoki.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3307"}],"version-history":[{"count":0,"href":"https:\/\/mkusunoki.net\/index.php?rest_route=\/wp\/v2\/posts\/3307\/revisions"}],"wp:attachment":[{"href":"https:\/\/mkusunoki.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3307"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mkusunoki.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3307"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mkusunoki.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}