Advertisement
Not a member of Pastebin yet?
Sign Up,
it unlocks many cool features!
- /*
- * Based on Obdev's AVRUSB code and under the same license.
- *
- * TODO: Make a proper file header. :-)
- * Modified for Digispark by Digistump
- */
- #ifndef __DigiKeyboard_h__
- #define __DigiKeyboard_h__
- #include <Arduino.h>
- #include <avr/pgmspace.h>
- #include <avr/interrupt.h>
- #include <avr/delay.h>
- #include <string.h>
- #include "usbdrv.h"
- #include "scancode-ascii-table.h"
- // TODO: Work around Arduino 12 issues better.
- //#include <WConstants.h>
- //#undef int()
- typedef uint8_t byte;
- #define BUFFER_SIZE 2 // Minimum of 2: 1 for modifiers + 1 for keystroke
- static uchar idleRate; // in 4 ms units
- /* We use a simplifed keyboard report descriptor which does not support the
- * boot protocol. We don't allow setting status LEDs and but we do allow
- * simultaneous key presses.
- * The report descriptor has been created with usb.org's "HID Descriptor Tool"
- * which can be downloaded from http://www.usb.org/developers/hidpage/.
- * Redundant entries (such as LOGICAL_MINIMUM and USAGE_PAGE) have been omitted
- * for the second INPUT item.
- */
- const PROGMEM char usbHidReportDescriptor[USB_CFG_HID_REPORT_DESCRIPTOR_LENGTH] = { /* USB report descriptor */
- 0x05, 0x01, // USAGE_PAGE (Generic Desktop)
- 0x09, 0x06, // USAGE (Keyboard)
- 0xa1, 0x01, // COLLECTION (Application)
- 0x05, 0x07, // USAGE_PAGE (Keyboard)
- 0x19, 0xe0, // USAGE_MINIMUM (Keyboard LeftControl)
- 0x29, 0xe7, // USAGE_MAXIMUM (Keyboard Right GUI)
- 0x15, 0x00, // LOGICAL_MINIMUM (0)
- 0x25, 0x01, // LOGICAL_MAXIMUM (1)
- 0x75, 0x01, // REPORT_SIZE (1)
- 0x95, 0x08, // REPORT_COUNT (8)
- 0x81, 0x02, // INPUT (Data,Var,Abs)
- 0x95, 0x01, // REPORT_COUNT (simultaneous keystrokes)
- 0x75, 0x08, // REPORT_SIZE (8)
- 0x25, 0x65, // LOGICAL_MAXIMUM (101)
- 0x19, 0x00, // USAGE_MINIMUM (Reserved (no event indicated))
- 0x29, 0x65, // USAGE_MAXIMUM (Keyboard Application)
- 0x81, 0x00, // INPUT (Data,Ary,Abs)
- 0xc0 // END_COLLECTION
- };
- /* Keyboard usage values, see usb.org's HID-usage-tables document, chapter
- * 10 Keyboard/Keypad Page for more codes.
- */
- #define MOD_CONTROL_LEFT (1<<0)
- #define MOD_SHIFT_LEFT (1<<1)
- #define MOD_ALT_LEFT (1<<2)
- #define MOD_GUI_LEFT (1<<3)
- #define MOD_CONTROL_RIGHT (1<<4)
- #define MOD_SHIFT_RIGHT (1<<5)
- #define MOD_ALT_RIGHT (1<<6)
- #define MOD_GUI_RIGHT (1<<7)
- #define KEY_A 4
- #define KEY_B 5
- #define KEY_C 6
- #define KEY_D 7
- #define KEY_E 8
- #define KEY_F 9
- #define KEY_G 10
- #define KEY_H 11
- #define KEY_I 12
- #define KEY_J 13
- #define KEY_K 14
- #define KEY_L 15
- #define KEY_M 16
- #define KEY_N 17
- #define KEY_O 18
- #define KEY_P 19
- #define KEY_Q 20
- #define KEY_R 21
- #define KEY_S 22
- #define KEY_T 23
- #define KEY_U 24
- #define KEY_V 25
- #define KEY_W 26
- #define KEY_X 27
- #define KEY_Y 28
- #define KEY_Z 29
- #define KEY_1 30
- #define KEY_2 31
- #define KEY_3 32
- #define KEY_4 33
- #define KEY_5 34
- #define KEY_6 35
- #define KEY_7 36
- #define KEY_8 37
- #define KEY_9 38
- #define KEY_0 39
- #define KEY_ENTER 40
- #define KEY_SPACE 44
- #define KEY_F1 58
- #define KEY_F2 59
- #define KEY_F3 60
- #define KEY_F4 61
- #define KEY_F5 62
- #define KEY_F6 63
- #define KEY_F7 64
- #define KEY_F8 65
- #define KEY_F9 66
- #define KEY_F10 67
- #define KEY_F11 68
- #define KEY_F12 69
- #define KEY_ARROW_LEFT 0x50
- class DigiKeyboardDevice : public Print {
- public:
- DigiKeyboardDevice () {
- cli();
- usbDeviceDisconnect();
- _delay_ms(250);
- usbDeviceConnect();
- usbInit();
- sei();
- // TODO: Remove the next two lines once we fix
- // missing first keystroke bug properly.
- memset(reportBuffer, 0, sizeof(reportBuffer));
- usbSetInterrupt(reportBuffer, sizeof(reportBuffer));
- }
- void update() {
- usbPoll();
- }
- // delay while updating until we are finished delaying
- void delay(long milli) {
- unsigned long last = millis();
- while (milli > 0) {
- unsigned long now = millis();
- milli -= now - last;
- last = now;
- update();
- }
- }
- //sendKeyStroke: sends a key press AND release
- void sendKeyStroke(byte keyStroke) {
- sendKeyStroke(keyStroke, 0);
- }
- //sendKeyStroke: sends a key press AND release with modifiers
- void sendKeyStroke(byte keyStroke, byte modifiers) {
- sendKeyPress(keyStroke, modifiers);
- // This stops endlessly repeating keystrokes:
- sendKeyPress(0,0);
- }
- //sendKeyPress: sends a key press only - no release
- //to release the key, send again with keyPress=0
- void sendKeyPress(byte keyPress) {
- sendKeyPress(keyPress, 0);
- }
- //sendKeyPress: sends a key press only, with modifiers - no release
- //to release the key, send again with keyPress=0
- void sendKeyPress(byte keyPress, byte modifiers) {
- while (!usbInterruptIsReady()) {
- // Note: We wait until we can send keyPress
- // so we know the previous keyPress was
- // sent.
- usbPoll();
- _delay_ms(5);
- }
- memset(reportBuffer, 0, sizeof(reportBuffer));
- reportBuffer[0] = modifiers;
- reportBuffer[1] = keyPress;
- usbSetInterrupt(reportBuffer, sizeof(reportBuffer));
- }
- size_t write(uint8_t chr) {
- uint8_t data = pgm_read_byte_near(ascii_to_scan_code_table + (chr - 8));
- sendKeyStroke(data & 0b01111111, data >> 7 ? MOD_SHIFT_RIGHT : 0);
- return 1;
- }
- //private: TODO: Make friend?
- uchar reportBuffer[2]; // buffer for HID reports [ 1 modifier byte + (len-1) key strokes]
- using Print::write;
- };
- DigiKeyboardDevice DigiKeyboard = DigiKeyboardDevice();
- #ifdef __cplusplus
- extern "C"{
- #endif
- // USB_PUBLIC uchar usbFunctionSetup
- uchar usbFunctionSetup(uchar data[8]) {
- usbRequest_t *rq = (usbRequest_t *)((void *)data);
- usbMsgPtr = DigiKeyboard.reportBuffer; //
- if ((rq->bmRequestType & USBRQ_TYPE_MASK) == USBRQ_TYPE_CLASS) {
- /* class request type */
- if (rq->bRequest == USBRQ_HID_GET_REPORT) {
- /* wValue: ReportType (highbyte), ReportID (lowbyte) */
- /* we only have one report type, so don't look at wValue */
- // TODO: Ensure it's okay not to return anything here?
- return 0;
- } else if (rq->bRequest == USBRQ_HID_GET_IDLE) {
- //usbMsgPtr = &idleRate;
- //return 1;
- return 0;
- } else if (rq->bRequest == USBRQ_HID_SET_IDLE) {
- idleRate = rq->wValue.bytes[1];
- }
- } else {
- /* no vendor specific requests implemented */
- }
- return 0;
- }
- #ifdef __cplusplus
- } // extern "C"
- #endif
- #endif // __DigiKeyboard_h__
Advertisement
Add Comment
Please, Sign In to add comment
Advertisement