onekey: Add settings for Xtal-less V-USB

[max/tmk_keyboard.git] / keyboard / onekey / VUSB.md

diff --git a/keyboard/onekey/VUSB.md b/keyboard/onekey/VUSB.md
new file mode 100644 (file)
index 0000000..0cf18c0
--- /dev/null
+++ b/keyboard/onekey/VUSB.md
@@ -0,0 +1,63 @@
+TMK with Xtal-less V-USB
+========================
+
+TMK onekey works on ATtiny85.
+
+    $ make -f Makefile.vusb
+
+    ...
+
+    Size after:
+       text    data     bss     dec     hex filename
+       5518      14     254    5786    169a onekey_vusb.elf
+
+    -------- end --------
+
+
+https://i.imgur.com/sNa302J.jpg
+
+
+Program with AVRISPmkII
+-----------------------
+D- and D+ lines are need to be disconnected when programed.
+
+    $ avrdude -p attiny85 -c avrispmkii -U flash:w:onekey_vusb.hex
+
+
+Xtal-less internal RC
+---------------------
+http://codeandlife.com/2012/02/22/v-usb-with-attiny45-attiny85-without-a-crystal/
+
+Configure fuses for PLL, internal RC and BOD(Brown out detection).
+
+    $ avrdude -c avrispmkii -p attiny85 -U lfuse:w:0xe1:m -U hfuse:w:0xdd:m
+
+Set 16.5MHz to F_CPU in Makefile
+
+    F_CPU = 16500000
+
+Add settings for calibration in usbconfig.h
+
+    diff --git a/keyboard/onekey/usbconfig.h b/keyboard/onekey/usbconfig.h
+    index e9b4f98..01e5aa6 100644
+    --- a/keyboard/onekey/usbconfig.h
+    +++ b/keyboard/onekey/usbconfig.h
+    @@ -161,7 +161,11 @@ section at the end of this file).
+      * proceed, do a return after doing your things. One possible application
+      * (besides debugging) is to flash a status LED on each packet.
+      */
+    -/* #define USB_RESET_HOOK(resetStarts)     if(!resetStarts){hadUsbReset();} */
+    +#define USB_RESET_HOOK(resetStarts)     if(!resetStarts){hadUsbReset();}
+    +/* http://codeandlife.com/2012/02/22/v-usb-with-attiny45-attiny85-without-a-crystal/ */
+    +#ifndef __ASSEMBLER__
+    +extern void hadUsbReset(void); // define the function for usbdrv.c
+    +#endif
+     /* This macro is a hook if you need to know when an USB RESET occurs. It has
+      * one parameter which distinguishes between the start of RESET state and its
+      * end.
+    @@ -202,7 +206,7 @@ section at the end of this file).
+      * usbFunctionWrite(). Use the global usbCurrentDataToken and a static variable
+      * for each control- and out-endpoint to check for duplicate packets.
+      */
+    -#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH   0
+    +#define USB_CFG_HAVE_MEASURE_FRAME_LENGTH   1