/* USB API for Teensy USB Development Board * http://www.pjrc.com/teensy/teensyduino.html * Copyright (c) 2011 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. */ #include #include #include #include "usb_common.h" #include "usb_private.h" #include "usb_api.h" #include "wiring.h" int usb_rawhid_class::available(void) { uint8_t n=0, intr_state; intr_state = SREG; cli(); if (usb_configuration) { UENUM = RAWHID_RX_ENDPOINT; n = UEBCLX; } SREG = intr_state; return n; } // receive a packet, with timeout int usb_rawhid_class::recv(void *ptr, uint16_t timeout) { uint8_t *buffer = (uint8_t *)ptr; uint8_t intr_state; // if we're not online (enumerated and configured), error if (!usb_configuration) return -1; intr_state = SREG; cli(); rawhid_rx_timeout_count = timeout; UENUM = RAWHID_RX_ENDPOINT; // wait for data to be available in the FIFO while (1) { if (UEINTX & (1<= 64) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 63) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 62) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 61) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 60) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 59) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 58) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 57) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 56) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 55) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 54) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 53) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 52) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 51) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 50) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 49) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 48) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 47) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 46) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 45) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 44) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 43) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 42) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 41) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 40) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 39) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 38) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 37) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 36) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 35) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 34) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 33) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 32) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 31) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 30) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 29) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 28) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 27) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 26) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 25) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 24) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 23) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 22) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 21) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 20) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 19) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 18) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 17) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 16) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 15) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 14) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 13) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 12) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 11) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 10) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 9) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 8) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 7) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 6) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 5) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 4) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 3) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 2) *buffer++ = UEDATX; #endif #if (RAWHID_RX_SIZE >= 1) *buffer++ = UEDATX; #endif // release the buffer UEINTX = 0x6B; SREG = intr_state; return RAWHID_RX_SIZE; } // send a packet, with timeout int usb_rawhid_class::send(const void *ptr, uint16_t timeout) { const uint8_t *buffer = (const uint8_t *)ptr; uint8_t intr_state; // if we're not online (enumerated and configured), error if (!usb_configuration) return -1; intr_state = SREG; cli(); rawhid_tx_timeout_count = timeout; UENUM = RAWHID_TX_ENDPOINT; // wait for the FIFO to be ready to accept data while (1) { if (UEINTX & (1<= 64) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 63) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 62) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 61) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 60) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 59) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 58) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 57) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 56) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 55) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 54) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 53) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 52) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 51) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 50) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 49) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 48) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 47) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 46) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 45) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 44) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 43) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 42) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 41) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 40) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 39) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 38) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 37) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 36) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 35) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 34) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 33) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 32) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 31) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 30) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 29) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 28) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 27) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 26) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 25) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 24) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 23) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 22) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 21) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 20) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 19) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 18) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 17) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 16) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 15) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 14) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 13) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 12) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 11) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 10) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 9) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 8) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 7) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 6) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 5) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 4) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 3) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 2) UEDATX = *buffer++; #endif #if (RAWHID_TX_SIZE >= 1) UEDATX = *buffer++; #endif // transmit it now UEINTX = 0x3A; SREG = intr_state; return RAWHID_TX_SIZE; } static volatile uint8_t prev_byte=0; void usb_serial_class::begin(long speed) { // make sure USB is initialized usb_init(); uint16_t begin_wait = (uint16_t)millis(); while (1) { if (usb_configuration) { delay(200); // a little time for host to load a driver return; } if (usb_suspended) { uint16_t begin_suspend = (uint16_t)millis(); while (usb_suspended) { // must remain suspended for a while, because // normal USB enumeration causes brief suspend // states, typically under 0.1 second if ((uint16_t)millis() - begin_suspend > 250) { return; } } } // ... or a timout (powered by a USB power adaptor that // wiggles the data lines to keep a USB device charging) if ((uint16_t)millis() - begin_wait > 2500) return; } prev_byte = 0; } void usb_serial_class::end() { usb_shutdown(); delay(25); } // number of bytes available in the receive buffer int usb_serial_class::available() { uint8_t c; c = prev_byte; // assume 1 byte static volatile access is atomic if (c) return 1; c = readnext(); if (c) { prev_byte = c; return 1; } return 0; } // get the next character, or -1 if nothing received int usb_serial_class::read() { uint8_t c; c = prev_byte; if (c) { prev_byte = 0; return c; } c = readnext(); if (c) return c; return -1; } int usb_serial_class::peek() { uint8_t c; c = prev_byte; if (c) return c; c = readnext(); if (c) { prev_byte = c; return c; } return -1; } // get the next character, or 0 if nothing uint8_t usb_serial_class::readnext(void) { uint8_t c, intr_state; // 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(); if (!usb_configuration) { SREG = intr_state; return 0; } UENUM = DEBUG_RX_ENDPOINT; try_again: if (!(UEINTX & (1<= 100 size_t usb_serial_class::write(uint8_t c) #else void usb_serial_class::write(uint8_t c) #endif { //static uint8_t previous_timeout=0; uint8_t timeout, intr_state; // if we're not online (enumerated and configured), error if (!usb_configuration) goto error; // 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 0 // this seems to be causig a lockup... why???? if (previous_timeout) { if (!(UEINTX & (1<= 100 return 1; #endif error: #if ARDUINO >= 100 setWriteError(); return 0; #else return; #endif } // These are Teensy-specific extensions to the Serial object // immediately transmit any buffered output. // This doesn't actually transmit the data - that is impossible! // USB devices only transmit when the host allows, so the best // we can do is release the FIFO buffer for when the host wants it void usb_serial_class::send_now(void) { uint8_t intr_state; intr_state = SREG; cli(); if (debug_flush_timer) { UENUM = DEBUG_TX_ENDPOINT; while ((UEINTX & (1<