#include <avr/pgmspace.h>
#include <avr/interrupt.h>
#include <util/delay.h>
-#include "usb_keyboard.h"
+//#include "usb_keyboard.h"
+
+// TEMP INCLUDES
+#include "usb_keyboard_debug.h"
+#include <print.h>
#define CPU_PRESCALE(n) (CLKPR = 0x80, CLKPR = (n))
-#define PRE_DRIVE_SLEEP
-#define POST_DRIVE_SLEEP
+// Sleep defined in milliseconds
+#define PRE_DRIVE_SLEEP 50
+#define POST_DRIVE_SLEEP 50
#define DRIVE_reg_1 PORTB
#define DRIVE_pin_11 <blank>
#define DRIVE_pin_12 <blank>
-#define DETECT_group_1 0
-#define DETECT_group_2 0
-#define DETECT_group_3 0
-#define DETECT_group_4 0
-#define DETECT_group_5 0
-#define DETECT_group_6 0
-#define DETECT_group_7 0
-#define DETECT_group_8 0
-#define DETECT_group_9 0
+#define DETECT_group_1 1
+#define DETECT_group_2 2
+#define DETECT_group_3 3
+#define DETECT_group_4 4
+#define DETECT_group_5 5
+#define DETECT_group_6 6
+#define DETECT_group_7 7
+#define DETECT_group_8 8
+#define DETECT_group_9 9
#define DETECT_group_10 <blank>
#define DETECT_group_11 <blank>
#define DETECT_group_12 <blank>
-// Change number of ORDs if number of lines differ
+#define DETECT_group_size_1 7
+#define DETECT_group_size_2 8
+#define DETECT_group_size_3 8
+#define DETECT_group_size_4 4
+#define DETECT_group_size_5 8
+#define DETECT_group_size_6 7
+#define DETECT_group_size_7 7
+#define DETECT_group_size_8 6
+#define DETECT_group_size_9 7
+#define DETECT_group_size_10 <blank>
+#define DETECT_group_size_11 <blank>
+#define DETECT_group_size_12 <blank>
+
+#define DETECT_group_array_1 {{KEY_SLASH,KEY_RIGHT_BRACE,KEY_ENTER,KEY_D,KEY_2,KEY_Q,KEY_C},{0,0,0,0,0,0,0}}
+#define DETECT_group_array_2 {{KEY_TILDE,KEY_DELETE,KEY_LEFT,KEY_SPACE,KEY_X,KEY_S,KEY_TAB,KEY_1},{0,0,0,0,0,0,0,0}}
+#define DETECT_group_array_3 {{KEY_BACKSPACE,KEY_UP,KEY_DOWN,KEY_A,KEY_INSERT,KEY_ALT,KEY_Z,KEY_RIGHT},{0,0,0,0,0,1,0,0}}
+#define DETECT_group_array_4 {{KEY_ESC ,KEY_CTRL,KEY_CAPS_LOCK,KEY_SHIFT} ,{0,1,0,1}}
+#define DETECT_group_array_5 0
+#define DETECT_group_array_6 0
+#define DETECT_group_array_7 {{KEY_L ,KEY_O ,KEY_0 ,KEY_N ,KEY_H,KEY_R,KEY_5},{0,0,0,0,0,0,0}}
+#define DETECT_group_array_8 0
+#define DETECT_group_array_9 0
+#define DETECT_group_array_10 <blank>
+#define DETECT_group_array_11 <blank>
+#define DETECT_group_array_12 <blank>
+
+
+
+
+
+
+
+// XXX Change number of ORDs if number of lines differ
#define DD_LOOP \
- for ( int c = 0;; c++ ) { \
+ for ( int c = 1;; c++ ) { \
switch ( c ) { \
DD_CASE_ORD(1) \
DD_CASE_ORD(2) \
DD_CASE_ORD(3) \
- DD_CASE_ORD(4) \
- DD_CASE_ORD(5) \
- DD_CASE_ORD(6) \
- DD_CASE_ORD(7) \
- DD_CASE_ORD(8) \
- DD_CASE_END(9,c) \
+ DD_CASE_END(4,c) \
} \
}
#define DRIVE_DETECT(reg,pin,group) \
- reg |= (1 << pin);\
- detection(group);\
- reg &= (0 << pin);
+ reg &= ~(1 << pin); \
+ detection(group); \
+ reg |= (1 << pin); \
+ _delay_ms(POST_DRIVE_SLEEP);
#define DD_CASE(number) \
case number:\
#define DD_CASE_END(number,var) \
DD_CASE(number) \
- default: \
var = -1; \
break;
-int main(void)
+// Determine if key is either normal or a modifier
+#define DET_GROUP_CHECK(index) \
+ { \
+ if ( groupArray[1][index] ) \
+ curDetect.modifiers |= groupArray[0][index]; \
+ else \
+ curDetect.keyDetectArray[curDetect.keyDetectCount++] = groupArray[0][index]; \
+ }
+
+// XXX - Detection Groups
+// Checks each of the specified pins, and then if press detected, determine if the key is normal or a modifier
+// Inverse logic applies for the PINs
+
+// Used for 1 detection group
+#define DET_GROUP_1 \
+ if ( !( PINB & (1 << 3) ) ) \
+ DET_GROUP_CHECK(3) \
+ if ( !( PINF & (1 << 1) ) ) \
+ DET_GROUP_CHECK(2) \
+ if ( !( PINF & (1 << 2) ) ) \
+ DET_GROUP_CHECK(1) \
+ if ( !( PINF & (1 << 3) ) ) \
+ DET_GROUP_CHECK(0)
+
+// Used for 4 detection groups
+#define DET_GROUP_2 \
+ if ( !( PINC & (1 << 0) ) ) \
+ DET_GROUP_CHECK(0) \
+ if ( !( PINC & (1 << 1) ) ) \
+ DET_GROUP_CHECK(1) \
+ if ( !( PINC & (1 << 2) ) ) \
+ DET_GROUP_CHECK(2) \
+ if ( !( PINC & (1 << 3) ) ) \
+ DET_GROUP_CHECK(3) \
+ if ( !( PINC & (1 << 4) ) ) \
+ DET_GROUP_CHECK(4) \
+ if ( !( PINC & (1 << 5) ) ) \
+ DET_GROUP_CHECK(5) \
+ if ( !( PINC & (1 << 6) ) ) \
+ DET_GROUP_CHECK(6) \
+
+// Used for 1 detection group
+#define DET_GROUP_3 \
+ if ( !( PINC & (1 << 0) ) ) \
+ DET_GROUP_CHECK(0) \
+ if ( !( PINC & (1 << 1) ) ) \
+ DET_GROUP_CHECK(1) \
+ if ( !( PINC & (1 << 2) ) ) \
+ DET_GROUP_CHECK(3) \
+ if ( !( PINC & (1 << 4) ) ) \
+ DET_GROUP_CHECK(4) \
+ if ( !( PINC & (1 << 5) ) ) \
+ DET_GROUP_CHECK(5) \
+ if ( !( PINC & (1 << 6) ) ) \
+ DET_GROUP_CHECK(6) \
+
+// Used for 3 detection groups
+#define DET_GROUP_4 \
+ if ( !( PINC & (1 << 0) ) ) \
+ DET_GROUP_CHECK(0) \
+ if ( !( PINC & (1 << 1) ) ) \
+ DET_GROUP_CHECK(1) \
+ if ( !( PINC & (1 << 2) ) ) \
+ DET_GROUP_CHECK(2) \
+ if ( !( PINC & (1 << 3) ) ) \
+ DET_GROUP_CHECK(3) \
+ if ( !( PINC & (1 << 4) ) ) \
+ DET_GROUP_CHECK(4) \
+ if ( !( PINC & (1 << 5) ) ) \
+ DET_GROUP_CHECK(5) \
+ if ( !( PINC & (1 << 6) ) ) \
+ DET_GROUP_CHECK(6) \
+ if ( !( PINE & (1 << 1) ) ) \
+ DET_GROUP_CHECK(7) \
+
+// Combines the DET_GROUP_Xs above for the given groupArray
+#define DET_GROUP(group,det_group) \
+ case group: \
+ { \
+ uint8_t groupArray[2][DETECT_group_size##_##group] = DETECT_group_array##_##group; \
+ DET_GROUP##_##det_group \
+ } \
+ break;
+
+struct keys {
+ uint8_t keyDetectCount;
+ uint8_t keyDetectArray[40];
+ uint8_t modifiers;
+} curDetect, prevDetect;
+
+void detection( int group )
+{
+ _delay_ms(PRE_DRIVE_SLEEP);
+ curDetect.keyDetectCount = 0;
+ curDetect.modifiers = 0;
+
+ // XXX Modify for different detection groups <-> groupArray mappings
+ switch ( group ) {
+ DET_GROUP(1,2)
+ DET_GROUP(2,4)
+ DET_GROUP(3,4)
+ DET_GROUP(4,1)
+ //DET_GROUP(5,4)
+ //DET_GROUP(6,2)
+ //DET_GROUP(7,2)
+ //DET_GROUP(8,3)
+ //DET_GROUP(9,2)
+ }
+
+
+ // Print out the current keys pressed
+ if ( curDetect.keyDetectCount > 0 ) {
+ print("Keys: ");
+ for ( int c = 0; c < curDetect.keyDetectCount; c++ ) {
+ phex( curDetect.keyDetectArray[c] );
+ print(" ");
+ }
+ print("\n");
+ }
+ if ( curDetect.modifiers ) {
+ print("Modifiers: ");
+ phex( curDetect.modifiers );
+ print("\n");
+ }
+}
+
+
+
+// XXX This part is configurable
+void pinSetup(void)
+{
+ // For each pin, 0=input, 1=output
+ DDRA = 0x00;
+ DDRB = 0x07;
+ DDRC = 0x80;
+ DDRD = 0x00;
+ DDRE = 0xC0;
+ DDRF = 0x31;
+
+ // Setting pins to either high or pull-up resistor
+ PORTA = 0x00;
+ PORTB = 0xFF;
+ PORTC = 0xFF;
+ PORTD = 0x00;
+ PORTE = 0xFF;
+ PORTF = 0xFF;
+}
+
+int main( void )
{
// set for 16 MHz clock
CPU_PRESCALE( 0 );
// Configuring Pins
-
- // TODO
+ pinSetup();
// Initialize the USB, and then wait for the host to set configuration.
// If the Teensy is powered without a PC connected to the USB port,
--- /dev/null
+/* USB Keyboard Plus Debug Channel Example for Teensy USB Development Board
+ * http://www.pjrc.com/teensy/usb_keyboard.html
+ * Copyright (c) 2009 PJRC.COM, LLC
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// Version 1.0: Initial Release
+// Version 1.1: Add support for Teensy 2.0
+
+#define USB_SERIAL_PRIVATE_INCLUDE
+#include "usb_keyboard_debug.h"
+
+/**************************************************************************
+ *
+ * Configurable Options
+ *
+ **************************************************************************/
+
+// You can change these to give your code its own name.
+#define STR_MANUFACTURER L"MfgName"
+#define STR_PRODUCT L"Keyboard"
+
+
+// Mac OS-X and Linux automatically load the correct drivers. On
+// Windows, even though the driver is supplied by Microsoft, an
+// INF file is needed to load the driver. These numbers need to
+// match the INF file.
+#define VENDOR_ID 0x16C0
+#define PRODUCT_ID 0x047D
+
+
+// USB devices are supposed to implment a halt feature, which is
+// rarely (if ever) used. If you comment this line out, the halt
+// code will be removed, saving 102 bytes of space (gcc 4.3.0).
+// This is not strictly USB compliant, but works with all major
+// operating systems.
+#define SUPPORT_ENDPOINT_HALT
+
+
+
+/**************************************************************************
+ *
+ * Endpoint Buffer Configuration
+ *
+ **************************************************************************/
+
+#define ENDPOINT0_SIZE 32
+
+#define KEYBOARD_INTERFACE 0
+#define KEYBOARD_ENDPOINT 3
+#define KEYBOARD_SIZE 8
+#define KEYBOARD_BUFFER EP_DOUBLE_BUFFER
+
+#define DEBUG_INTERFACE 1
+#define DEBUG_TX_ENDPOINT 4
+#define DEBUG_TX_SIZE 32
+#define DEBUG_TX_BUFFER EP_DOUBLE_BUFFER
+
+static const uint8_t PROGMEM endpoint_config_table[] = {
+ 0,
+ 0,
+ 1, EP_TYPE_INTERRUPT_IN, EP_SIZE(KEYBOARD_SIZE) | KEYBOARD_BUFFER,
+ 1, EP_TYPE_INTERRUPT_IN, EP_SIZE(DEBUG_TX_SIZE) | DEBUG_TX_BUFFER
+};
+
+
+/**************************************************************************
+ *
+ * Descriptor Data
+ *
+ **************************************************************************/
+
+// Descriptors are the data that your computer reads when it auto-detects
+// this USB device (called "enumeration" in USB lingo). The most commonly
+// changed items are editable at the top of this file. Changing things
+// in here should only be done by those who've read chapter 9 of the USB
+// spec and relevant portions of any USB class specifications!
+
+
+static uint8_t PROGMEM device_descriptor[] = {
+ 18, // bLength
+ 1, // bDescriptorType
+ 0x00, 0x02, // bcdUSB
+ 0, // bDeviceClass
+ 0, // bDeviceSubClass
+ 0, // bDeviceProtocol
+ ENDPOINT0_SIZE, // bMaxPacketSize0
+ LSB(VENDOR_ID), MSB(VENDOR_ID), // idVendor
+ LSB(PRODUCT_ID), MSB(PRODUCT_ID), // idProduct
+ 0x00, 0x01, // bcdDevice
+ 1, // iManufacturer
+ 2, // iProduct
+ 0, // iSerialNumber
+ 1 // bNumConfigurations
+};
+
+// Keyboard Protocol 1, HID 1.11 spec, Appendix B, page 59-60
+static uint8_t PROGMEM keyboard_hid_report_desc[] = {
+ 0x05, 0x01, // Usage Page (Generic Desktop),
+ 0x09, 0x06, // Usage (Keyboard),
+ 0xA1, 0x01, // Collection (Application),
+ 0x75, 0x01, // Report Size (1),
+ 0x95, 0x08, // Report Count (8),
+ 0x05, 0x07, // Usage Page (Key Codes),
+ 0x19, 0xE0, // Usage Minimum (224),
+ 0x29, 0xE7, // Usage Maximum (231),
+ 0x15, 0x00, // Logical Minimum (0),
+ 0x25, 0x01, // Logical Maximum (1),
+ 0x81, 0x02, // Input (Data, Variable, Absolute), ;Modifier byte
+ 0x95, 0x01, // Report Count (1),
+ 0x75, 0x08, // Report Size (8),
+ 0x81, 0x03, // Input (Constant), ;Reserved byte
+ 0x95, 0x05, // Report Count (5),
+ 0x75, 0x01, // Report Size (1),
+ 0x05, 0x08, // Usage Page (LEDs),
+ 0x19, 0x01, // Usage Minimum (1),
+ 0x29, 0x05, // Usage Maximum (5),
+ 0x91, 0x02, // Output (Data, Variable, Absolute), ;LED report
+ 0x95, 0x01, // Report Count (1),
+ 0x75, 0x03, // Report Size (3),
+ 0x91, 0x03, // Output (Constant), ;LED report padding
+ 0x95, 0x06, // Report Count (6),
+ 0x75, 0x08, // Report Size (8),
+ 0x15, 0x00, // Logical Minimum (0),
+ 0x25, 0x68, // Logical Maximum(104),
+ 0x05, 0x07, // Usage Page (Key Codes),
+ 0x19, 0x00, // Usage Minimum (0),
+ 0x29, 0x68, // Usage Maximum (104),
+ 0x81, 0x00, // Input (Data, Array),
+ 0xc0 // End Collection
+};
+
+static uint8_t PROGMEM debug_hid_report_desc[] = {
+ 0x06, 0x31, 0xFF, // Usage Page 0xFF31 (vendor defined)
+ 0x09, 0x74, // Usage 0x74
+ 0xA1, 0x53, // Collection 0x53
+ 0x75, 0x08, // report size = 8 bits
+ 0x15, 0x00, // logical minimum = 0
+ 0x26, 0xFF, 0x00, // logical maximum = 255
+ 0x95, DEBUG_TX_SIZE, // report count
+ 0x09, 0x75, // usage
+ 0x81, 0x02, // Input (array)
+ 0xC0 // end collection
+};
+
+#define CONFIG1_DESC_SIZE (9+9+9+7+9+9+7)
+#define KEYBOARD_HID_DESC_OFFSET (9+9)
+#define DEBUG_HID_DESC_OFFSET (9+9+9+7+9)
+static uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
+ // configuration descriptor, USB spec 9.6.3, page 264-266, Table 9-10
+ 9, // bLength;
+ 2, // bDescriptorType;
+ LSB(CONFIG1_DESC_SIZE), // wTotalLength
+ MSB(CONFIG1_DESC_SIZE),
+ 2, // bNumInterfaces
+ 1, // bConfigurationValue
+ 0, // iConfiguration
+ 0xC0, // bmAttributes
+ 50, // bMaxPower
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ KEYBOARD_INTERFACE, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 1, // bNumEndpoints
+ 0x03, // bInterfaceClass (0x03 = HID)
+ 0x01, // bInterfaceSubClass (0x01 = Boot)
+ 0x01, // bInterfaceProtocol (0x01 = Keyboard)
+ 0, // iInterface
+ // HID interface descriptor, HID 1.11 spec, section 6.2.1
+ 9, // bLength
+ 0x21, // bDescriptorType
+ 0x11, 0x01, // bcdHID
+ 0, // bCountryCode
+ 1, // bNumDescriptors
+ 0x22, // bDescriptorType
+ sizeof(keyboard_hid_report_desc), // wDescriptorLength
+ 0,
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ KEYBOARD_ENDPOINT | 0x80, // bEndpointAddress
+ 0x03, // bmAttributes (0x03=intr)
+ KEYBOARD_SIZE, 0, // wMaxPacketSize
+ 1, // bInterval
+ // interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
+ 9, // bLength
+ 4, // bDescriptorType
+ DEBUG_INTERFACE, // bInterfaceNumber
+ 0, // bAlternateSetting
+ 1, // bNumEndpoints
+ 0x03, // bInterfaceClass (0x03 = HID)
+ 0x00, // bInterfaceSubClass
+ 0x00, // bInterfaceProtocol
+ 0, // iInterface
+ // HID interface descriptor, HID 1.11 spec, section 6.2.1
+ 9, // bLength
+ 0x21, // bDescriptorType
+ 0x11, 0x01, // bcdHID
+ 0, // bCountryCode
+ 1, // bNumDescriptors
+ 0x22, // bDescriptorType
+ sizeof(debug_hid_report_desc), // wDescriptorLength
+ 0,
+ // endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
+ 7, // bLength
+ 5, // bDescriptorType
+ DEBUG_TX_ENDPOINT | 0x80, // bEndpointAddress
+ 0x03, // bmAttributes (0x03=intr)
+ DEBUG_TX_SIZE, 0, // wMaxPacketSize
+ 1 // bInterval
+};
+
+// If you're desperate for a little extra code memory, these strings
+// can be completely removed if iManufacturer, iProduct, iSerialNumber
+// in the device desciptor are changed to zeros.
+struct usb_string_descriptor_struct {
+ uint8_t bLength;
+ uint8_t bDescriptorType;
+ int16_t wString[];
+};
+static struct usb_string_descriptor_struct PROGMEM string0 = {
+ 4,
+ 3,
+ {0x0409}
+};
+static struct usb_string_descriptor_struct PROGMEM string1 = {
+ sizeof(STR_MANUFACTURER),
+ 3,
+ STR_MANUFACTURER
+};
+static struct usb_string_descriptor_struct PROGMEM string2 = {
+ sizeof(STR_PRODUCT),
+ 3,
+ STR_PRODUCT
+};
+
+// This table defines which descriptor data is sent for each specific
+// request from the host (in wValue and wIndex).
+static struct descriptor_list_struct {
+ uint16_t wValue;
+ uint16_t wIndex;
+ const uint8_t *addr;
+ uint8_t length;
+} PROGMEM descriptor_list[] = {
+ {0x0100, 0x0000, device_descriptor, sizeof(device_descriptor)},
+ {0x0200, 0x0000, config1_descriptor, sizeof(config1_descriptor)},
+ {0x2200, KEYBOARD_INTERFACE, keyboard_hid_report_desc, sizeof(keyboard_hid_report_desc)},
+ {0x2100, KEYBOARD_INTERFACE, config1_descriptor+KEYBOARD_HID_DESC_OFFSET, 9},
+ {0x2200, DEBUG_INTERFACE, debug_hid_report_desc, sizeof(debug_hid_report_desc)},
+ {0x2100, DEBUG_INTERFACE, config1_descriptor+DEBUG_HID_DESC_OFFSET, 9},
+ {0x0300, 0x0000, (const uint8_t *)&string0, 4},
+ {0x0301, 0x0409, (const uint8_t *)&string1, sizeof(STR_MANUFACTURER)},
+ {0x0302, 0x0409, (const uint8_t *)&string2, sizeof(STR_PRODUCT)}
+};
+#define NUM_DESC_LIST (sizeof(descriptor_list)/sizeof(struct descriptor_list_struct))
+
+
+/**************************************************************************
+ *
+ * Variables - these are the only non-stack RAM usage
+ *
+ **************************************************************************/
+
+// zero when we are not configured, non-zero when enumerated
+static volatile uint8_t usb_configuration=0;
+
+// the time remaining before we transmit any partially full
+// packet, or send a zero length packet.
+static volatile uint8_t debug_flush_timer=0;
+
+// which modifier keys are currently pressed
+// 1=left ctrl, 2=left shift, 4=left alt, 8=left gui
+// 16=right ctrl, 32=right shift, 64=right alt, 128=right gui
+uint8_t keyboard_modifier_keys=0;
+
+// which keys are currently pressed, up to 6 keys may be down at once
+uint8_t keyboard_keys[6]={0,0,0,0,0,0};
+
+// protocol setting from the host. We use exactly the same report
+// either way, so this variable only stores the setting since we
+// are required to be able to report which setting is in use.
+static uint8_t keyboard_protocol=1;
+
+// the idle configuration, how often we send the report to the
+// host (ms * 4) even when it hasn't changed
+static uint8_t keyboard_idle_config=125;
+
+// count until idle timeout
+static uint8_t keyboard_idle_count=0;
+
+// 1=num lock, 2=caps lock, 4=scroll lock, 8=compose, 16=kana
+volatile uint8_t keyboard_leds=0;
+
+
+/**************************************************************************
+ *
+ * Public Functions - these are the API intended for the user
+ *
+ **************************************************************************/
+
+
+// initialize USB
+void usb_init(void)
+{
+ HW_CONFIG();
+ USB_FREEZE(); // enable USB
+ PLL_CONFIG(); // config PLL
+ while (!(PLLCSR & (1<<PLOCK))) ; // wait for PLL lock
+ USB_CONFIG(); // start USB clock
+ UDCON = 0; // enable attach resistor
+ usb_configuration = 0;
+ UDIEN = (1<<EORSTE)|(1<<SOFE);
+ sei();
+}
+
+// return 0 if the USB is not configured, or the configuration
+// number selected by the HOST
+uint8_t usb_configured(void)
+{
+ return usb_configuration;
+}
+
+
+// perform a single keystroke
+int8_t usb_keyboard_press(uint8_t key, uint8_t modifier)
+{
+ int8_t r;
+
+ keyboard_modifier_keys = modifier;
+ keyboard_keys[0] = key;
+ r = usb_keyboard_send();
+ if (r) return r;
+ keyboard_modifier_keys = 0;
+ keyboard_keys[0] = 0;
+ return usb_keyboard_send();
+}
+
+// send the contents of keyboard_keys and keyboard_modifier_keys
+int8_t usb_keyboard_send(void)
+{
+ uint8_t i, intr_state, timeout;
+
+ if (!usb_configuration) return -1;
+ intr_state = SREG;
+ cli();
+ UENUM = KEYBOARD_ENDPOINT;
+ timeout = UDFNUML + 50;
+ while (1) {
+ // are we ready to transmit?
+ if (UEINTX & (1<<RWAL)) break;
+ SREG = intr_state;
+ // has the USB gone offline?
+ if (!usb_configuration) return -1;
+ // have we waited too long?
+ if (UDFNUML == timeout) return -1;
+ // get ready to try checking again
+ intr_state = SREG;
+ cli();
+ UENUM = KEYBOARD_ENDPOINT;
+ }
+ UEDATX = keyboard_modifier_keys;
+ UEDATX = 0;
+ for (i=0; i<6; i++) {
+ UEDATX = keyboard_keys[i];
+ }
+ UEINTX = 0x3A;
+ keyboard_idle_count = 0;
+ SREG = intr_state;
+ return 0;
+}
+
+// transmit a character. 0 returned on success, -1 on error
+int8_t usb_debug_putchar(uint8_t c)
+{
+ static uint8_t previous_timeout=0;
+ uint8_t timeout, intr_state;
+
+ // if we're not online (enumerated and configured), error
+ if (!usb_configuration) return -1;
+ // interrupts are disabled so these functions can be
+ // used from the main program or interrupt context,
+ // even both in the same program!
+ intr_state = SREG;
+ cli();
+ UENUM = DEBUG_TX_ENDPOINT;
+ // if we gave up due to timeout before, don't wait again
+ if (previous_timeout) {
+ if (!(UEINTX & (1<<RWAL))) {
+ SREG = intr_state;
+ return -1;
+ }
+ previous_timeout = 0;
+ }
+ // wait for the FIFO to be ready to accept data
+ timeout = UDFNUML + 4;
+ while (1) {
+ // are we ready to transmit?
+ if (UEINTX & (1<<RWAL)) break;
+ SREG = intr_state;
+ // have we waited too long?
+ if (UDFNUML == timeout) {
+ previous_timeout = 1;
+ return -1;
+ }
+ // has the USB gone offline?
+ if (!usb_configuration) return -1;
+ // get ready to try checking again
+ intr_state = SREG;
+ cli();
+ UENUM = DEBUG_TX_ENDPOINT;
+ }
+ // actually write the byte into the FIFO
+ UEDATX = c;
+ // if this completed a packet, transmit it now!
+ if (!(UEINTX & (1<<RWAL))) {
+ UEINTX = 0x3A;
+ debug_flush_timer = 0;
+ } else {
+ debug_flush_timer = 2;
+ }
+ SREG = intr_state;
+ return 0;
+}
+
+
+// immediately transmit any buffered output.
+void usb_debug_flush_output(void)
+{
+ uint8_t intr_state;
+
+ intr_state = SREG;
+ cli();
+ if (debug_flush_timer) {
+ UENUM = DEBUG_TX_ENDPOINT;
+ while ((UEINTX & (1<<RWAL))) {
+ UEDATX = 0;
+ }
+ UEINTX = 0x3A;
+ debug_flush_timer = 0;
+ }
+ SREG = intr_state;
+}
+
+
+
+/**************************************************************************
+ *
+ * Private Functions - not intended for general user consumption....
+ *
+ **************************************************************************/
+
+
+
+// USB Device Interrupt - handle all device-level events
+// the transmit buffer flushing is triggered by the start of frame
+//
+ISR(USB_GEN_vect)
+{
+ uint8_t intbits, t, i;
+ static uint8_t div4=0;
+
+ intbits = UDINT;
+ UDINT = 0;
+ if (intbits & (1<<EORSTI)) {
+ UENUM = 0;
+ UECONX = 1;
+ UECFG0X = EP_TYPE_CONTROL;
+ UECFG1X = EP_SIZE(ENDPOINT0_SIZE) | EP_SINGLE_BUFFER;
+ UEIENX = (1<<RXSTPE);
+ usb_configuration = 0;
+ }
+ if ((intbits & (1<<SOFI)) && usb_configuration) {
+ t = debug_flush_timer;
+ if (t) {
+ debug_flush_timer = -- t;
+ if (!t) {
+ UENUM = DEBUG_TX_ENDPOINT;
+ while ((UEINTX & (1<<RWAL))) {
+ UEDATX = 0;
+ }
+ UEINTX = 0x3A;
+ }
+ }
+ if (keyboard_idle_config && (++div4 & 3) == 0) {
+ UENUM = KEYBOARD_ENDPOINT;
+ if (UEINTX & (1<<RWAL)) {
+ keyboard_idle_count++;
+ if (keyboard_idle_count == keyboard_idle_config) {
+ keyboard_idle_count = 0;
+ UEDATX = keyboard_modifier_keys;
+ UEDATX = 0;
+ for (i=0; i<6; i++) {
+ UEDATX = keyboard_keys[i];
+ }
+ UEINTX = 0x3A;
+ }
+ }
+ }
+ }
+}
+
+
+
+// Misc functions to wait for ready and send/receive packets
+static inline void usb_wait_in_ready(void)
+{
+ while (!(UEINTX & (1<<TXINI))) ;
+}
+static inline void usb_send_in(void)
+{
+ UEINTX = ~(1<<TXINI);
+}
+static inline void usb_wait_receive_out(void)
+{
+ while (!(UEINTX & (1<<RXOUTI))) ;
+}
+static inline void usb_ack_out(void)
+{
+ UEINTX = ~(1<<RXOUTI);
+}
+
+
+
+// USB Endpoint Interrupt - endpoint 0 is handled here. The
+// other endpoints are manipulated by the user-callable
+// functions, and the start-of-frame interrupt.
+//
+ISR(USB_COM_vect)
+{
+ uint8_t intbits;
+ const uint8_t *list;
+ const uint8_t *cfg;
+ uint8_t i, n, len, en;
+ uint8_t bmRequestType;
+ uint8_t bRequest;
+ uint16_t wValue;
+ uint16_t wIndex;
+ uint16_t wLength;
+ uint16_t desc_val;
+ const uint8_t *desc_addr;
+ uint8_t desc_length;
+
+ UENUM = 0;
+ intbits = UEINTX;
+ if (intbits & (1<<RXSTPI)) {
+ bmRequestType = UEDATX;
+ bRequest = UEDATX;
+ wValue = UEDATX;
+ wValue |= (UEDATX << 8);
+ wIndex = UEDATX;
+ wIndex |= (UEDATX << 8);
+ wLength = UEDATX;
+ wLength |= (UEDATX << 8);
+ UEINTX = ~((1<<RXSTPI) | (1<<RXOUTI) | (1<<TXINI));
+ if (bRequest == GET_DESCRIPTOR) {
+ list = (const uint8_t *)descriptor_list;
+ for (i=0; ; i++) {
+ if (i >= NUM_DESC_LIST) {
+ UECONX = (1<<STALLRQ)|(1<<EPEN); //stall
+ return;
+ }
+ desc_val = pgm_read_word(list);
+ if (desc_val != wValue) {
+ list += sizeof(struct descriptor_list_struct);
+ continue;
+ }
+ list += 2;
+ desc_val = pgm_read_word(list);
+ if (desc_val != wIndex) {
+ list += sizeof(struct descriptor_list_struct)-2;
+ continue;
+ }
+ list += 2;
+ desc_addr = (const uint8_t *)pgm_read_word(list);
+ list += 2;
+ desc_length = pgm_read_byte(list);
+ break;
+ }
+ len = (wLength < 256) ? wLength : 255;
+ if (len > desc_length) len = desc_length;
+ do {
+ // wait for host ready for IN packet
+ do {
+ i = UEINTX;
+ } while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+ if (i & (1<<RXOUTI)) return; // abort
+ // send IN packet
+ n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+ for (i = n; i; i--) {
+ UEDATX = pgm_read_byte(desc_addr++);
+ }
+ len -= n;
+ usb_send_in();
+ } while (len || n == ENDPOINT0_SIZE);
+ return;
+ }
+ if (bRequest == SET_ADDRESS) {
+ usb_send_in();
+ usb_wait_in_ready();
+ UDADDR = wValue | (1<<ADDEN);
+ return;
+ }
+ if (bRequest == SET_CONFIGURATION && bmRequestType == 0) {
+ usb_configuration = wValue;
+ usb_send_in();
+ cfg = endpoint_config_table;
+ for (i=1; i<5; i++) {
+ UENUM = i;
+ en = pgm_read_byte(cfg++);
+ UECONX = en;
+ if (en) {
+ UECFG0X = pgm_read_byte(cfg++);
+ UECFG1X = pgm_read_byte(cfg++);
+ }
+ }
+ UERST = 0x1E;
+ UERST = 0;
+ return;
+ }
+ if (bRequest == GET_CONFIGURATION && bmRequestType == 0x80) {
+ usb_wait_in_ready();
+ UEDATX = usb_configuration;
+ usb_send_in();
+ return;
+ }
+
+ if (bRequest == GET_STATUS) {
+ usb_wait_in_ready();
+ i = 0;
+ #ifdef SUPPORT_ENDPOINT_HALT
+ if (bmRequestType == 0x82) {
+ UENUM = wIndex;
+ if (UECONX & (1<<STALLRQ)) i = 1;
+ UENUM = 0;
+ }
+ #endif
+ UEDATX = i;
+ UEDATX = 0;
+ usb_send_in();
+ return;
+ }
+ #ifdef SUPPORT_ENDPOINT_HALT
+ if ((bRequest == CLEAR_FEATURE || bRequest == SET_FEATURE)
+ && bmRequestType == 0x02 && wValue == 0) {
+ i = wIndex & 0x7F;
+ if (i >= 1 && i <= MAX_ENDPOINT) {
+ usb_send_in();
+ UENUM = i;
+ if (bRequest == SET_FEATURE) {
+ UECONX = (1<<STALLRQ)|(1<<EPEN);
+ } else {
+ UECONX = (1<<STALLRQC)|(1<<RSTDT)|(1<<EPEN);
+ UERST = (1 << i);
+ UERST = 0;
+ }
+ return;
+ }
+ }
+ #endif
+ if (wIndex == KEYBOARD_INTERFACE) {
+ if (bmRequestType == 0xA1) {
+ if (bRequest == HID_GET_REPORT) {
+ usb_wait_in_ready();
+ UEDATX = keyboard_modifier_keys;
+ UEDATX = 0;
+ for (i=0; i<6; i++) {
+ UEDATX = keyboard_keys[i];
+ }
+ usb_send_in();
+ return;
+ }
+ if (bRequest == HID_GET_IDLE) {
+ usb_wait_in_ready();
+ UEDATX = keyboard_idle_config;
+ usb_send_in();
+ return;
+ }
+ if (bRequest == HID_GET_PROTOCOL) {
+ usb_wait_in_ready();
+ UEDATX = keyboard_protocol;
+ usb_send_in();
+ return;
+ }
+ }
+ if (bmRequestType == 0x21) {
+ if (bRequest == HID_SET_REPORT) {
+ usb_wait_receive_out();
+ keyboard_leds = UEDATX;
+ usb_ack_out();
+ usb_send_in();
+ return;
+ }
+ if (bRequest == HID_SET_IDLE) {
+ keyboard_idle_config = (wValue >> 8);
+ keyboard_idle_count = 0;
+ //usb_wait_in_ready();
+ usb_send_in();
+ return;
+ }
+ if (bRequest == HID_SET_PROTOCOL) {
+ keyboard_protocol = wValue;
+ //usb_wait_in_ready();
+ usb_send_in();
+ return;
+ }
+ }
+ }
+ if (wIndex == DEBUG_INTERFACE) {
+ if (bRequest == HID_GET_REPORT && bmRequestType == 0xA1) {
+ len = wLength;
+ do {
+ // wait for host ready for IN packet
+ do {
+ i = UEINTX;
+ } while (!(i & ((1<<TXINI)|(1<<RXOUTI))));
+ if (i & (1<<RXOUTI)) return; // abort
+ // send IN packet
+ n = len < ENDPOINT0_SIZE ? len : ENDPOINT0_SIZE;
+ for (i = n; i; i--) {
+ UEDATX = 0;
+ }
+ len -= n;
+ usb_send_in();
+ } while (len || n == ENDPOINT0_SIZE);
+ return;
+ }
+ }
+ }
+ UECONX = (1<<STALLRQ) | (1<<EPEN); // stall
+}
+
+
projects / kiibohd-controller.git / commitdiff