{"id":1082,"date":"2016-02-07T12:36:17","date_gmt":"2016-02-07T03:36:17","guid":{"rendered":"http:\/\/otsuka.biz\/blog1\/?p=1082"},"modified":"2024-02-12T15:59:03","modified_gmt":"2024-02-12T06:59:03","slug":"hands-free-set-for-smartphones-with-rn-52-pic24fj64gb002","status":"publish","type":"post","link":"https:\/\/otsuka.biz\/blog1\/hands-free-set-for-smartphones-with-rn-52-pic24fj64gb002\/","title":{"rendered":"Hands-free phone system with RN52 Bluetooth module and PIC24FJ64GB002"},"content":{"rendered":"

I began to assemble a hand-free phone system by the RN52 Bluetooth module of\u00a0Microchip Technology Inc. \u00a0\u00a0 The RN52 is very reasonable but is small for hobby.\u00a0\u00a0\u00a0 This blog reports only a CMD mode function because my present board doesn\u2019t have an audio component yet.\u00a0\u00a0 A complete report will be uploaded when this set is equipped with an audio component.<\/p>\n

<< Introduction in Japanese >><\/p>\n

\u6628\u5e74\u79cb\u306b\u643a\u5e2f\u96fb\u8a71\u3092 FOMA \u304b\u3089 iPhone \u306b\u5909\u66f4\u3057\u305f\u3002FOMA \u30b5\u30fc\u30d3\u30b9\u7d42\u4e86\u307e\u3067\u5229\u7528\u3057\u3088\u3046\u3068\u601d\u3063\u3066\u3044\u305f\u304c\u3001\u5916\u51fa\u4e2d\u3067\u306e\u30d6\u30e9\u30a6\u30b6\u95b2\u89a7\u306e\u5fc5\u8981\u306b\u8feb\u3089\u308c\u3001\u30b5\u30fc\u30d3\u30b9\u5909\u66f4\u3092\u884c\u3063\u305f\u3002\u306a\u3089\u3070\u5de5\u4f5c\u30cd\u30bf\u306e\u5bfe\u8c61\u3068\u3057\u3066\u8003\u3048\u308b\u306e\u3082\u5fc5\u7136\u3067\u3001\u4ee5\u524d\u304b\u3089\u306e\u30c6\u30fc\u30de\u3067\u3082\u3042\u308b\u30cf\u30f3\u30ba\u30d5\u30ea\u30fc\u901a\u8a71\u306e\u5de5\u4f5c\u306b\u53d6\u308a\u639b\u304b\u3063\u305f\u3002\u6a5f\u7a2e\u306f iPhone 6s \u3067\u3042\u308b\u306e\u3067\u3001FOMA \u306e\u3088\u3046\u306b USB \u63a5\u7d9a\u3067\u306e\u30cf\u30f3\u30ba\u30d5\u30ea\u30fc\u64cd\u4f5c\u3067\u306a\u304f\u3001Bluetooth \u63a5\u7d9a\u3067\u306e\u64cd\u4f5c\u3068\u306a\u308b\u3002
\nHFP \u898f\u683c\u306b\u5bfe\u5fdc\u3057\u305f Bluetooth module \u3068\u3057\u3066 Microchip technology \u793e\u306e RN52 \u3092\u7528\u3044\u305f\u3002RN52 \u3092 2.54 mm \u57fa\u677f\u306b\u534a\u7530\u4ed8\u3051\u3059\u308b\u306e\u306b\u306f\u82e6\u52b4\u3057\u305f\u3002\u4eca\u5f8c\u306f\u8001\u773c\u3082\u9032\u307f\u4e8c\u5ea6\u3068\u51fa\u6765\u306a\u3044\u3068\u601d\u3046\u306e\u3067\u3001SparkFun Audio Bluetooth Breakout – RN-52 \u306e\u5229\u7528\u3092\u8003\u3048\u308b\u3002
\n\u4eca\u56de\u306f\u9014\u4e2d\u7d4c\u904e\u3068\u3057\u3066 command mode \u3067\u306e\u767a\u7740\u4fe1\u306e\u52d5\u4f5c\u78ba\u8a8d\u307e\u3067\u3092\u5831\u544a\u3059\u308b\u3002\u97f3\u58f0\u6a5f\u80fd\u306b\u95a2\u3057\u3066\u306f\u5b8c\u5099\u51fa\u6765\u305f\u3089\u6539\u3081\u3066\u5831\u544a\u3059\u308b\u3002<\/p>\n

Mobile phone \u00a0<–\u00a0\u00a0Bluetooth\u00a0 –>\u00a0 RN52\u00a0 <–\u00a0 UART\u00a0 –>\u00a0 PIC24FJ64GB002\u00a0 <–\u00a0 USB\u00a0 –>\u00a0 Keypad<\/p>\n

\"HF<\/a><\/p>\n

Inputted numbers are displayed in the first line of the LCD and the current connection status of the RN52 obtained with the Q command is in the second line.<\/p>\n

<< PIC microcontroller board >><\/p>\n

Test board is the same\u00a0in my blog page on Aug. 31, 2014.
\n( In Japanese : \u5e73\u621026\u5e748\u670831\u65e5\u306e\u7a3f\u3067\u793a\u3057\u305f\u30dc\u30fc\u30c9\u3092\u4f7f\u7528 )<\/p>\n

Clock and pin connection of my board with PIC24FJ64GB002 :<\/p>\n

FRC 8 MHz – 96 MHz PLL;
\n48 MHz for USB Module (96 MHz PLL divide by 2);
\n32 MHz for System Clock\u00a0(96 MHz PLL divide by 3);<\/p>\n

LED : RB0, RB1; \u00a0\u00a0 Switch (pull down) :\u00a0MCLR, RB2;<\/p>\n

LCD\u00a0(SC1602BBWB-XA-GB-G) :\u00a0RS – RB7, R\/W – GND, E – RB8, Data bus : DB4 – RB9, DB5 – RB13, DB6 – RB14, DB7 –\u00a0RB15;<\/p>\n

<< RN52 >><\/p>\n

pin 3\u00a0\u00a0 GIO2\u00a0– \u00a0PIC pin 12 (RP4\/RB4)
\npin 11 GIO9\u00a0–\u00a0 PIC pin 11 (RA4)
\npin 16 TX\u00a0\u00a0\u00a0\u00a0 –\u00a0 PIC pin 2 (RP5\/RA0) assigned to U2RX
\npin 17 RX\u00a0\u00a0\u00a0\u00a0 –\u00a0 PIC pin 3 (RP6\/RA1) assigned to U2TX
\npin 21 PWREN – switch (pull high)
\nFor flow control is not used, RN52 pin 14 RTS is connected with RN52 pin 15 CTS.<\/p>\n

Default UART configuration of\u00a0the RN52 module :
\nBaud rate : 115,200 Kbps
\nBits : 8
\nParity : None
\nStop bits : 1<\/p>\n

<<\u00a0Sample code\u00a0>><\/p>\n

Revision on February 23, 2016<\/p>\n

\n\n
\n
\n
\n
\"\u30a2\u30a4\u30b3\u30f3\"<\/div>\n
\n

Hands-free-bluetooth<\/a><\/h3>\n
<\/i> 1 \u30d5\u30a1\u30a4\u30eb <\/i> 45.46 KB<\/div>\n <\/div>\n
\n \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\n\n<\/div> (A project of MPLAB X IDE containing HEX.file only)<\/p>\n

Based\u00a0on Microchip Libraries for Applications v2014_07_22<\/p>\n

<< Function of this set >><\/p>\n

You can power up the RN52 module by driving PWREN high.<\/p>\n

If you enter a telephone number, RN52 will initiate outgoing call automatically after 3 seconds.<\/p>\n

The maximum telephone number is 11 digits.<\/p>\n

Enter-key is used to accept incoming call, to initiate outgoing call, and to terminate call.<\/p>\n

Back-space key is used to cancel a last inputted\u00a0number.<\/p>\n

PIC-RB2-switch is used to practice a factory reset of RN52.<\/p>\n

In Japanese :<\/p>\n

<< \u64cd\u4f5c\u65b9\u6cd5 >><\/p>\n

RN52 \u306e PWREN – switch\u00a0\u3092\u9577\u62bc\u3057\u3057\u3066\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u8d77\u52d5\u3002<\/p>\n

\u96fb\u8a71\u756a\u53f7\u306f\u6700\u5927\uff11\uff11\u6841\u3001\u7d04\uff13\u79d2\u3067\u81ea\u52d5\u767a\u4fe1\u3002<\/p>\n

Enter key\uff1a\u7740\u4fe1\u5fdc\u7b54\u3001\u5f37\u5236\u767a\u4fe1\u3001\u5207\u65ad\u3002<\/p>\n

Back space\uff1a\uff11\u6587\u5b57\u30ad\u30e3\u30f3\u30bb\u30eb\u3002<\/p>\n

PIC \u306e RB2-switch \u3067 RN52 \u3092\u5de5\u5834\u51fa\u8377\u6642\u8a2d\u5b9a\u306b\u30ea\u30bb\u30c3\u30c8\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

I began to assemble a hand-free phone system by the RN52 Bluetooth module of\u00a0Microchip Technology Inc. \u00a0\u00a0 The […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"vkexunit_cta_each_option":"","footnotes":""},"categories":[2,10],"tags":[],"class_list":["post-1082","post","type-post","status-publish","format-standard","hentry","category-pic","category-telephone"],"_links":{"self":[{"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts\/1082","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/comments?post=1082"}],"version-history":[{"count":2,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts\/1082\/revisions"}],"predecessor-version":[{"id":3358,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts\/1082\/revisions\/3358"}],"wp:attachment":[{"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/media?parent=1082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/categories?post=1082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/tags?post=1082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}