{"id":331,"date":"2014-10-26T22:03:31","date_gmt":"2014-10-26T13:03:31","guid":{"rendered":"http:\/\/otsuka.biz\/blog1\/?p=331"},"modified":"2024-02-12T14:43:06","modified_gmt":"2024-02-12T05:43:06","slug":"usb-cdc-pic18f2550","status":"publish","type":"post","link":"https:\/\/otsuka.biz\/blog1\/usb-cdc-pic18f2550\/","title":{"rendered":"USB firmware of CDC and HID for PIC18F2550, PIC24FJ64GB002"},"content":{"rendered":"

<<\u00a0Reference >><\/p>\n

Microchip Libraries for Applications (MLA)\u00a0v2014_07_22<\/p>\n

<< My two boards >><\/p>\n

1)\u00a0\u00a0\u00a0 My UBW board with PIC18F2550 (in my page on Jan. 16, 2014) works as a USB device.<\/p>\n

A\u00a0configuration of CONFIG1L register of\u00a0a USB bootloader\u00a0is set to\u00a0“Divide by 5 (20 MHz oscillator input) and\u00a096 MHz PLL divided by 2 to derive system clock”, so Fosc is 48MHz derived from\u00a0a\u00a0primary oscillator using\u00a0a 20MHz\u00a0ceramic resonator.<\/p>\n

LED :\u00a0RC0, RC1; \u00a0\u00a0 Switch (pull down) : MCLR, RC2;<\/p>\n

LCD\u00a0(SC1602BBWB-XA-GB-G) :\u00a0RS – RB2, R\/W – GND, E – RB3, Data bus – RB4\uff5eRB7;<\/p>\n

USART : RC6 for USART_TX,\u00a0\u00a0 RC7 for UART_RX;<\/p>\n

2)\u00a0\u00a0\u00a0\u00a0My board with PIC24FJ64GB002 (of my page on Aug. 31, 2014) works as both a USB device and a USB host.<\/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

UART : RA0 for U2RX,\u00a0\u00a0 RA1 for U2TX;<\/p>\n

<<\u00a0USB Device : CDC (Communication Device Class)\u00a0 Serial Emulator >><\/p>\n

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

It is necessary to select\u00a0the appropriate configuration\u00a0in the project of MPLAB X IDE when compiling by XC8\u00a0for PIC18F2550 or XC16 for PIC24FJ64GB002.<\/p>\n

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

USB Device - CDC<\/a><\/h3>\n
<\/i> 1 \u30d5\u30a1\u30a4\u30eb <\/i> 246.12 KB<\/div>\n <\/div>\n
\n \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\n\n<\/div> (not including a driver for a Personal-Computer)<\/p>\n

<<\u00a0USB Host: CDC >><\/p>\n

No picture.<\/p>\n

Code for my board with PIC24FJ64GB002\u00a0:<\/p>\n

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

USB host - CDC<\/a><\/h3>\n
<\/i> 1 \u30d5\u30a1\u30a4\u30eb <\/i> 175.73 KB<\/div>\n <\/div>\n
\n \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\n\n<\/div> (not including a driver for a Personal-Computer)<\/p>\n

<<\u00a0USB\u00a0host : HID (Human Interface Device) class\u00a0>><\/p>\n

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

Code for my board with PIC24FJ64GB002 (outputting a ASCII code translated from a HID code) :<\/p>\n

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

USB host HID<\/a><\/h3>\n
<\/i> 1 \u30d5\u30a1\u30a4\u30eb <\/i> 226.15 KB<\/div>\n <\/div>\n
\n \u30c0\u30a6\u30f3\u30ed\u30fc\u30c9<\/a>\n <\/div>\n <\/div>\n <\/div>\n<\/div>\n\n<\/div> (containing a bug relating to PnP (plug and play))<\/p>\n

<< A demonstration >><\/p>\n

Keypad – USB –\u00a0Host (24FJ64GB002)\u00a0– UART –\u00a0Device (18F2550) – USB – PC (terminal soft):<\/p>\n

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

The upper board\u00a0(PIC18F2550) practices a USB\u00a0serial emulator\u00a0 and the lower (PIC24FJ64GB002)\u00a0does a USB HID.\u00a0\u00a0\u00a0 A PC (terminal soft) is not shown in the above picture.<\/p>\n","protected":false},"excerpt":{"rendered":"

<<\u00a0Reference >> Microchip Libraries for Applications (MLA)\u00a0v2014_07_22 << My two boards > […]<\/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],"tags":[],"class_list":["post-331","post","type-post","status-publish","format-standard","hentry","category-pic"],"_links":{"self":[{"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts\/331","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=331"}],"version-history":[{"count":1,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts\/331\/revisions"}],"predecessor-version":[{"id":3339,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/posts\/331\/revisions\/3339"}],"wp:attachment":[{"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/media?parent=331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/categories?post=331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/otsuka.biz\/blog1\/wp-json\/wp\/v2\/tags?post=331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}