avr: Initial support for Atmel AT90USB1286 mcu
Add GPIO definitions for the AT90USB1286. Add code for communicating over USB port on AT90USB1286. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor
parent
4326a3adce
commit
3eafc83458
2
Makefile
2
Makefile
|
|
@ -26,7 +26,7 @@ PYTHON=python
|
||||||
|
|
||||||
# Source files
|
# Source files
|
||||||
src-y=sched.c command.c stepper.c basecmd.c gpiocmds.c spicmds.c endstop.c
|
src-y=sched.c command.c stepper.c basecmd.c gpiocmds.c spicmds.c endstop.c
|
||||||
DIRS=src src/avr src/simulator
|
DIRS=src src/avr src/simulator lib/pjrc_usb_serial
|
||||||
|
|
||||||
# Default compiler flags
|
# Default compiler flags
|
||||||
cc-option=$(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`" \
|
cc-option=$(shell if test -z "`$(1) $(2) -S -o /dev/null -xc /dev/null 2>&1`" \
|
||||||
|
|
|
||||||
|
|
@ -21,6 +21,7 @@ PINS_atmega1280 = avr_pins(12)
|
||||||
|
|
||||||
MCU_PINS = {
|
MCU_PINS = {
|
||||||
"atmega168": PINS_atmega164, "atmega644p": PINS_atmega164,
|
"atmega168": PINS_atmega164, "atmega644p": PINS_atmega164,
|
||||||
|
"at90usb1286": avr_pins(5),
|
||||||
"atmega1280": PINS_atmega1280, "atmega2560": PINS_atmega1280,
|
"atmega1280": PINS_atmega1280, "atmega2560": PINS_atmega1280,
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,6 @@
|
||||||
|
This directory contains external library code.
|
||||||
|
|
||||||
|
The pjrc_usb_serial directory contains code from:
|
||||||
|
http://www.pjrc.com/teensy/usb_serial.html
|
||||||
|
it has been modified to compile on recent versions of gcc. See
|
||||||
|
usb_serial.patch for the modifications.
|
||||||
|
|
@ -0,0 +1,939 @@
|
||||||
|
/* USB Serial Example for Teensy USB Development Board
|
||||||
|
* http://www.pjrc.com/teensy/usb_serial.html
|
||||||
|
* Copyright (c) 2008,2010,2011 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.
|
||||||
|
*/
|
||||||
|
|
||||||
|
// Version 1.0: Initial Release
|
||||||
|
// Version 1.1: support Teensy++
|
||||||
|
// Version 1.2: fixed usb_serial_available
|
||||||
|
// Version 1.3: added transmit bandwidth test
|
||||||
|
// Version 1.4: added usb_serial_write
|
||||||
|
// Version 1.5: add support for Teensy 2.0
|
||||||
|
// Version 1.6: fix zero length packet bug
|
||||||
|
// Version 1.7: fix usb_serial_set_control
|
||||||
|
|
||||||
|
#include <string.h>
|
||||||
|
#define USB_SERIAL_PRIVATE_INCLUDE
|
||||||
|
#include "usb_serial.h"
|
||||||
|
|
||||||
|
|
||||||
|
/**************************************************************************
|
||||||
|
*
|
||||||
|
* Configurable Options
|
||||||
|
*
|
||||||
|
**************************************************************************/
|
||||||
|
|
||||||
|
// You can change these to give your code its own name. On Windows,
|
||||||
|
// these are only used before an INF file (driver install) is loaded.
|
||||||
|
#define STR_MANUFACTURER L"Your Name"
|
||||||
|
#define STR_PRODUCT L"USB Serial"
|
||||||
|
|
||||||
|
// All USB serial devices are supposed to have a serial number
|
||||||
|
// (according to Microsoft). On windows, a new COM port is created
|
||||||
|
// for every unique serial/vendor/product number combination. If
|
||||||
|
// you program 2 identical boards with 2 different serial numbers
|
||||||
|
// and they are assigned COM7 and COM8, each will always get the
|
||||||
|
// same COM port number because Windows remembers serial numbers.
|
||||||
|
//
|
||||||
|
// On Mac OS-X, a device file is created automatically which
|
||||||
|
// incorperates the serial number, eg, /dev/cu-usbmodem12341
|
||||||
|
//
|
||||||
|
// Linux by default ignores the serial number, and creates device
|
||||||
|
// files named /dev/ttyACM0, /dev/ttyACM1... in the order connected.
|
||||||
|
// Udev rules (in /etc/udev/rules.d) can define persistent device
|
||||||
|
// names linked to this serial number, as well as permissions, owner
|
||||||
|
// and group settings.
|
||||||
|
#define STR_SERIAL_NUMBER L"12345"
|
||||||
|
|
||||||
|
// 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 0x047A
|
||||||
|
|
||||||
|
// When you write data, it goes into a USB endpoint buffer, which
|
||||||
|
// is transmitted to the PC when it becomes full, or after a timeout
|
||||||
|
// with no more writes. Even if you write in exactly packet-size
|
||||||
|
// increments, this timeout is used to send a "zero length packet"
|
||||||
|
// that tells the PC no more data is expected and it should pass
|
||||||
|
// any buffered data to the application that may be waiting. If
|
||||||
|
// you want data sent immediately, call usb_serial_flush_output().
|
||||||
|
#define TRANSMIT_FLUSH_TIMEOUT 5 /* in milliseconds */
|
||||||
|
|
||||||
|
// If the PC is connected but not "listening", this is the length
|
||||||
|
// of time before usb_serial_getchar() returns with an error. This
|
||||||
|
// is roughly equivilant to a real UART simply transmitting the
|
||||||
|
// bits on a wire where nobody is listening, except you get an error
|
||||||
|
// code which you can ignore for serial-like discard of data, or
|
||||||
|
// use to know your data wasn't sent.
|
||||||
|
#define TRANSMIT_TIMEOUT 25 /* in milliseconds */
|
||||||
|
|
||||||
|
// 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 116 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
|
||||||
|
*
|
||||||
|
**************************************************************************/
|
||||||
|
|
||||||
|
// These buffer sizes are best for most applications, but perhaps if you
|
||||||
|
// want more buffering on some endpoint at the expense of others, this
|
||||||
|
// is where you can make such changes. The AT90USB162 has only 176 bytes
|
||||||
|
// of DPRAM (USB buffers) and only endpoints 3 & 4 can double buffer.
|
||||||
|
|
||||||
|
#define ENDPOINT0_SIZE 16
|
||||||
|
#define CDC_ACM_ENDPOINT 2
|
||||||
|
#define CDC_RX_ENDPOINT 3
|
||||||
|
#define CDC_TX_ENDPOINT 4
|
||||||
|
#if defined(__AVR_AT90USB162__)
|
||||||
|
#define CDC_ACM_SIZE 16
|
||||||
|
#define CDC_ACM_BUFFER EP_SINGLE_BUFFER
|
||||||
|
#define CDC_RX_SIZE 32
|
||||||
|
#define CDC_RX_BUFFER EP_DOUBLE_BUFFER
|
||||||
|
#define CDC_TX_SIZE 32
|
||||||
|
#define CDC_TX_BUFFER EP_DOUBLE_BUFFER
|
||||||
|
#else
|
||||||
|
#define CDC_ACM_SIZE 16
|
||||||
|
#define CDC_ACM_BUFFER EP_SINGLE_BUFFER
|
||||||
|
#define CDC_RX_SIZE 64
|
||||||
|
#define CDC_RX_BUFFER EP_DOUBLE_BUFFER
|
||||||
|
#define CDC_TX_SIZE 64
|
||||||
|
#define CDC_TX_BUFFER EP_DOUBLE_BUFFER
|
||||||
|
#endif
|
||||||
|
|
||||||
|
static const uint8_t PROGMEM endpoint_config_table[] = {
|
||||||
|
0,
|
||||||
|
1, EP_TYPE_INTERRUPT_IN, EP_SIZE(CDC_ACM_SIZE) | CDC_ACM_BUFFER,
|
||||||
|
1, EP_TYPE_BULK_OUT, EP_SIZE(CDC_RX_SIZE) | CDC_RX_BUFFER,
|
||||||
|
1, EP_TYPE_BULK_IN, EP_SIZE(CDC_TX_SIZE) | CDC_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 const uint8_t PROGMEM device_descriptor[] = {
|
||||||
|
18, // bLength
|
||||||
|
1, // bDescriptorType
|
||||||
|
0x00, 0x02, // bcdUSB
|
||||||
|
2, // 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
|
||||||
|
3, // iSerialNumber
|
||||||
|
1 // bNumConfigurations
|
||||||
|
};
|
||||||
|
|
||||||
|
#define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7)
|
||||||
|
static const 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
|
||||||
|
0, // bInterfaceNumber
|
||||||
|
0, // bAlternateSetting
|
||||||
|
1, // bNumEndpoints
|
||||||
|
0x02, // bInterfaceClass
|
||||||
|
0x02, // bInterfaceSubClass
|
||||||
|
0x01, // bInterfaceProtocol
|
||||||
|
0, // iInterface
|
||||||
|
// CDC Header Functional Descriptor, CDC Spec 5.2.3.1, Table 26
|
||||||
|
5, // bFunctionLength
|
||||||
|
0x24, // bDescriptorType
|
||||||
|
0x00, // bDescriptorSubtype
|
||||||
|
0x10, 0x01, // bcdCDC
|
||||||
|
// Call Management Functional Descriptor, CDC Spec 5.2.3.2, Table 27
|
||||||
|
5, // bFunctionLength
|
||||||
|
0x24, // bDescriptorType
|
||||||
|
0x01, // bDescriptorSubtype
|
||||||
|
0x01, // bmCapabilities
|
||||||
|
1, // bDataInterface
|
||||||
|
// Abstract Control Management Functional Descriptor, CDC Spec 5.2.3.3, Table 28
|
||||||
|
4, // bFunctionLength
|
||||||
|
0x24, // bDescriptorType
|
||||||
|
0x02, // bDescriptorSubtype
|
||||||
|
0x06, // bmCapabilities
|
||||||
|
// Union Functional Descriptor, CDC Spec 5.2.3.8, Table 33
|
||||||
|
5, // bFunctionLength
|
||||||
|
0x24, // bDescriptorType
|
||||||
|
0x06, // bDescriptorSubtype
|
||||||
|
0, // bMasterInterface
|
||||||
|
1, // bSlaveInterface0
|
||||||
|
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
|
||||||
|
7, // bLength
|
||||||
|
5, // bDescriptorType
|
||||||
|
CDC_ACM_ENDPOINT | 0x80, // bEndpointAddress
|
||||||
|
0x03, // bmAttributes (0x03=intr)
|
||||||
|
CDC_ACM_SIZE, 0, // wMaxPacketSize
|
||||||
|
64, // bInterval
|
||||||
|
// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
|
||||||
|
9, // bLength
|
||||||
|
4, // bDescriptorType
|
||||||
|
1, // bInterfaceNumber
|
||||||
|
0, // bAlternateSetting
|
||||||
|
2, // bNumEndpoints
|
||||||
|
0x0A, // bInterfaceClass
|
||||||
|
0x00, // bInterfaceSubClass
|
||||||
|
0x00, // bInterfaceProtocol
|
||||||
|
0, // iInterface
|
||||||
|
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
|
||||||
|
7, // bLength
|
||||||
|
5, // bDescriptorType
|
||||||
|
CDC_RX_ENDPOINT, // bEndpointAddress
|
||||||
|
0x02, // bmAttributes (0x02=bulk)
|
||||||
|
CDC_RX_SIZE, 0, // wMaxPacketSize
|
||||||
|
0, // bInterval
|
||||||
|
// endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13
|
||||||
|
7, // bLength
|
||||||
|
5, // bDescriptorType
|
||||||
|
CDC_TX_ENDPOINT | 0x80, // bEndpointAddress
|
||||||
|
0x02, // bmAttributes (0x02=bulk)
|
||||||
|
CDC_TX_SIZE, 0, // wMaxPacketSize
|
||||||
|
0 // 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 const struct usb_string_descriptor_struct PROGMEM string0 = {
|
||||||
|
4,
|
||||||
|
3,
|
||||||
|
{0x0409}
|
||||||
|
};
|
||||||
|
static const struct usb_string_descriptor_struct PROGMEM string1 = {
|
||||||
|
sizeof(STR_MANUFACTURER),
|
||||||
|
3,
|
||||||
|
STR_MANUFACTURER
|
||||||
|
};
|
||||||
|
static const struct usb_string_descriptor_struct PROGMEM string2 = {
|
||||||
|
sizeof(STR_PRODUCT),
|
||||||
|
3,
|
||||||
|
STR_PRODUCT
|
||||||
|
};
|
||||||
|
static const struct usb_string_descriptor_struct PROGMEM string3 = {
|
||||||
|
sizeof(STR_SERIAL_NUMBER),
|
||||||
|
3,
|
||||||
|
STR_SERIAL_NUMBER
|
||||||
|
};
|
||||||
|
|
||||||
|
// This table defines which descriptor data is sent for each specific
|
||||||
|
// request from the host (in wValue and wIndex).
|
||||||
|
static const 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)},
|
||||||
|
{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)},
|
||||||
|
{0x0303, 0x0409, (const uint8_t *)&string3, sizeof(STR_SERIAL_NUMBER)}
|
||||||
|
};
|
||||||
|
#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 transmit_flush_timer=0;
|
||||||
|
static uint8_t transmit_previous_timeout=0;
|
||||||
|
|
||||||
|
// serial port settings (baud rate, control signals, etc) set
|
||||||
|
// by the PC. These are ignored, but kept in RAM.
|
||||||
|
static uint8_t cdc_line_coding[7]={0x00, 0xE1, 0x00, 0x00, 0x00, 0x00, 0x08};
|
||||||
|
static uint8_t cdc_line_rtsdtr=0;
|
||||||
|
|
||||||
|
|
||||||
|
/**************************************************************************
|
||||||
|
*
|
||||||
|
* Public Functions - these are the API intended for the user
|
||||||
|
*
|
||||||
|
**************************************************************************/
|
||||||
|
|
||||||
|
// initialize USB serial
|
||||||
|
void usb_init(void)
|
||||||
|
{
|
||||||
|
HW_CONFIG();
|
||||||
|
USB_FREEZE(); // enable USB
|
||||||
|
PLL_CONFIG(); // config PLL, 16 MHz xtal
|
||||||
|
while (!(PLLCSR & (1<<PLOCK))) ; // wait for PLL lock
|
||||||
|
USB_CONFIG(); // start USB clock
|
||||||
|
UDCON = 0; // enable attach resistor
|
||||||
|
usb_configuration = 0;
|
||||||
|
cdc_line_rtsdtr = 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;
|
||||||
|
}
|
||||||
|
|
||||||
|
// get the next character, or -1 if nothing received
|
||||||
|
int16_t usb_serial_getchar(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 -1;
|
||||||
|
}
|
||||||
|
UENUM = CDC_RX_ENDPOINT;
|
||||||
|
retry:
|
||||||
|
c = UEINTX;
|
||||||
|
if (!(c & (1<<RWAL))) {
|
||||||
|
// no data in buffer
|
||||||
|
if (c & (1<<RXOUTI)) {
|
||||||
|
UEINTX = 0x6B;
|
||||||
|
goto retry;
|
||||||
|
}
|
||||||
|
SREG = intr_state;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
// take one byte out of the buffer
|
||||||
|
c = UEDATX;
|
||||||
|
// if buffer completely used, release it
|
||||||
|
if (!(UEINTX & (1<<RWAL))) UEINTX = 0x6B;
|
||||||
|
SREG = intr_state;
|
||||||
|
return c;
|
||||||
|
}
|
||||||
|
|
||||||
|
// number of bytes available in the receive buffer
|
||||||
|
uint8_t usb_serial_available(void)
|
||||||
|
{
|
||||||
|
uint8_t n=0, i, intr_state;
|
||||||
|
|
||||||
|
intr_state = SREG;
|
||||||
|
cli();
|
||||||
|
if (usb_configuration) {
|
||||||
|
UENUM = CDC_RX_ENDPOINT;
|
||||||
|
n = UEBCLX;
|
||||||
|
if (!n) {
|
||||||
|
i = UEINTX;
|
||||||
|
if (i & (1<<RXOUTI) && !(i & (1<<RWAL))) UEINTX = 0x6B;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
SREG = intr_state;
|
||||||
|
return n;
|
||||||
|
}
|
||||||
|
|
||||||
|
// discard any buffered input
|
||||||
|
void usb_serial_flush_input(void)
|
||||||
|
{
|
||||||
|
uint8_t intr_state;
|
||||||
|
|
||||||
|
if (usb_configuration) {
|
||||||
|
intr_state = SREG;
|
||||||
|
cli();
|
||||||
|
UENUM = CDC_RX_ENDPOINT;
|
||||||
|
while ((UEINTX & (1<<RWAL))) {
|
||||||
|
UEINTX = 0x6B;
|
||||||
|
}
|
||||||
|
SREG = intr_state;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
// transmit a character. 0 returned on success, -1 on error
|
||||||
|
int8_t usb_serial_putchar(uint8_t c)
|
||||||
|
{
|
||||||
|
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 = CDC_TX_ENDPOINT;
|
||||||
|
// if we gave up due to timeout before, don't wait again
|
||||||
|
if (transmit_previous_timeout) {
|
||||||
|
if (!(UEINTX & (1<<RWAL))) {
|
||||||
|
SREG = intr_state;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
transmit_previous_timeout = 0;
|
||||||
|
}
|
||||||
|
// wait for the FIFO to be ready to accept data
|
||||||
|
timeout = UDFNUML + TRANSMIT_TIMEOUT;
|
||||||
|
while (1) {
|
||||||
|
// are we ready to transmit?
|
||||||
|
if (UEINTX & (1<<RWAL)) break;
|
||||||
|
SREG = intr_state;
|
||||||
|
// have we waited too long? This happens if the user
|
||||||
|
// is not running an application that is listening
|
||||||
|
if (UDFNUML == timeout) {
|
||||||
|
transmit_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 = CDC_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;
|
||||||
|
transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
|
||||||
|
SREG = intr_state;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// transmit a character, but do not wait if the buffer is full,
|
||||||
|
// 0 returned on success, -1 on buffer full or error
|
||||||
|
int8_t usb_serial_putchar_nowait(uint8_t c)
|
||||||
|
{
|
||||||
|
uint8_t intr_state;
|
||||||
|
|
||||||
|
if (!usb_configuration) return -1;
|
||||||
|
intr_state = SREG;
|
||||||
|
cli();
|
||||||
|
UENUM = CDC_TX_ENDPOINT;
|
||||||
|
if (!(UEINTX & (1<<RWAL))) {
|
||||||
|
// buffer is full
|
||||||
|
SREG = intr_state;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
// actually write the byte into the FIFO
|
||||||
|
UEDATX = c;
|
||||||
|
// if this completed a packet, transmit it now!
|
||||||
|
if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
|
||||||
|
transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
|
||||||
|
SREG = intr_state;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
// transmit a buffer.
|
||||||
|
// 0 returned on success, -1 on error
|
||||||
|
// This function is optimized for speed! Each call takes approx 6.1 us overhead
|
||||||
|
// plus 0.25 us per byte. 12 Mbit/sec USB has 8.67 us per-packet overhead and
|
||||||
|
// takes 0.67 us per byte. If called with 64 byte packet-size blocks, this function
|
||||||
|
// can transmit at full USB speed using 43% CPU time. The maximum theoretical speed
|
||||||
|
// is 19 packets per USB frame, or 1216 kbytes/sec. However, bulk endpoints have the
|
||||||
|
// lowest priority, so any other USB devices will likely reduce the speed. Speed
|
||||||
|
// can also be limited by how quickly the PC-based software reads data, as the host
|
||||||
|
// controller in the PC will not allocate bandwitdh without a pending read request.
|
||||||
|
// (thanks to Victor Suarez for testing and feedback and initial code)
|
||||||
|
|
||||||
|
int8_t usb_serial_write(const uint8_t *buffer, uint16_t size)
|
||||||
|
{
|
||||||
|
uint8_t timeout, intr_state, write_size;
|
||||||
|
|
||||||
|
// 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 = CDC_TX_ENDPOINT;
|
||||||
|
// if we gave up due to timeout before, don't wait again
|
||||||
|
if (transmit_previous_timeout) {
|
||||||
|
if (!(UEINTX & (1<<RWAL))) {
|
||||||
|
SREG = intr_state;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
transmit_previous_timeout = 0;
|
||||||
|
}
|
||||||
|
// each iteration of this loop transmits a packet
|
||||||
|
while (size) {
|
||||||
|
// wait for the FIFO to be ready to accept data
|
||||||
|
timeout = UDFNUML + TRANSMIT_TIMEOUT;
|
||||||
|
while (1) {
|
||||||
|
// are we ready to transmit?
|
||||||
|
if (UEINTX & (1<<RWAL)) break;
|
||||||
|
SREG = intr_state;
|
||||||
|
// have we waited too long? This happens if the user
|
||||||
|
// is not running an application that is listening
|
||||||
|
if (UDFNUML == timeout) {
|
||||||
|
transmit_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 = CDC_TX_ENDPOINT;
|
||||||
|
}
|
||||||
|
|
||||||
|
// compute how many bytes will fit into the next packet
|
||||||
|
write_size = CDC_TX_SIZE - UEBCLX;
|
||||||
|
if (write_size > size) write_size = size;
|
||||||
|
size -= write_size;
|
||||||
|
|
||||||
|
// write the packet
|
||||||
|
switch (write_size) {
|
||||||
|
#if (CDC_TX_SIZE == 64)
|
||||||
|
case 64: UEDATX = *buffer++;
|
||||||
|
case 63: UEDATX = *buffer++;
|
||||||
|
case 62: UEDATX = *buffer++;
|
||||||
|
case 61: UEDATX = *buffer++;
|
||||||
|
case 60: UEDATX = *buffer++;
|
||||||
|
case 59: UEDATX = *buffer++;
|
||||||
|
case 58: UEDATX = *buffer++;
|
||||||
|
case 57: UEDATX = *buffer++;
|
||||||
|
case 56: UEDATX = *buffer++;
|
||||||
|
case 55: UEDATX = *buffer++;
|
||||||
|
case 54: UEDATX = *buffer++;
|
||||||
|
case 53: UEDATX = *buffer++;
|
||||||
|
case 52: UEDATX = *buffer++;
|
||||||
|
case 51: UEDATX = *buffer++;
|
||||||
|
case 50: UEDATX = *buffer++;
|
||||||
|
case 49: UEDATX = *buffer++;
|
||||||
|
case 48: UEDATX = *buffer++;
|
||||||
|
case 47: UEDATX = *buffer++;
|
||||||
|
case 46: UEDATX = *buffer++;
|
||||||
|
case 45: UEDATX = *buffer++;
|
||||||
|
case 44: UEDATX = *buffer++;
|
||||||
|
case 43: UEDATX = *buffer++;
|
||||||
|
case 42: UEDATX = *buffer++;
|
||||||
|
case 41: UEDATX = *buffer++;
|
||||||
|
case 40: UEDATX = *buffer++;
|
||||||
|
case 39: UEDATX = *buffer++;
|
||||||
|
case 38: UEDATX = *buffer++;
|
||||||
|
case 37: UEDATX = *buffer++;
|
||||||
|
case 36: UEDATX = *buffer++;
|
||||||
|
case 35: UEDATX = *buffer++;
|
||||||
|
case 34: UEDATX = *buffer++;
|
||||||
|
case 33: UEDATX = *buffer++;
|
||||||
|
#endif
|
||||||
|
#if (CDC_TX_SIZE >= 32)
|
||||||
|
case 32: UEDATX = *buffer++;
|
||||||
|
case 31: UEDATX = *buffer++;
|
||||||
|
case 30: UEDATX = *buffer++;
|
||||||
|
case 29: UEDATX = *buffer++;
|
||||||
|
case 28: UEDATX = *buffer++;
|
||||||
|
case 27: UEDATX = *buffer++;
|
||||||
|
case 26: UEDATX = *buffer++;
|
||||||
|
case 25: UEDATX = *buffer++;
|
||||||
|
case 24: UEDATX = *buffer++;
|
||||||
|
case 23: UEDATX = *buffer++;
|
||||||
|
case 22: UEDATX = *buffer++;
|
||||||
|
case 21: UEDATX = *buffer++;
|
||||||
|
case 20: UEDATX = *buffer++;
|
||||||
|
case 19: UEDATX = *buffer++;
|
||||||
|
case 18: UEDATX = *buffer++;
|
||||||
|
case 17: UEDATX = *buffer++;
|
||||||
|
#endif
|
||||||
|
#if (CDC_TX_SIZE >= 16)
|
||||||
|
case 16: UEDATX = *buffer++;
|
||||||
|
case 15: UEDATX = *buffer++;
|
||||||
|
case 14: UEDATX = *buffer++;
|
||||||
|
case 13: UEDATX = *buffer++;
|
||||||
|
case 12: UEDATX = *buffer++;
|
||||||
|
case 11: UEDATX = *buffer++;
|
||||||
|
case 10: UEDATX = *buffer++;
|
||||||
|
case 9: UEDATX = *buffer++;
|
||||||
|
#endif
|
||||||
|
case 8: UEDATX = *buffer++;
|
||||||
|
case 7: UEDATX = *buffer++;
|
||||||
|
case 6: UEDATX = *buffer++;
|
||||||
|
case 5: UEDATX = *buffer++;
|
||||||
|
case 4: UEDATX = *buffer++;
|
||||||
|
case 3: UEDATX = *buffer++;
|
||||||
|
case 2: UEDATX = *buffer++;
|
||||||
|
default:
|
||||||
|
case 1: UEDATX = *buffer++;
|
||||||
|
case 0: break;
|
||||||
|
}
|
||||||
|
// if this completed a packet, transmit it now!
|
||||||
|
if (!(UEINTX & (1<<RWAL))) UEINTX = 0x3A;
|
||||||
|
transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
|
||||||
|
SREG = intr_state;
|
||||||
|
}
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
// 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_flush_output(void)
|
||||||
|
{
|
||||||
|
uint8_t intr_state;
|
||||||
|
|
||||||
|
intr_state = SREG;
|
||||||
|
cli();
|
||||||
|
if (transmit_flush_timer) {
|
||||||
|
UENUM = CDC_TX_ENDPOINT;
|
||||||
|
UEINTX = 0x3A;
|
||||||
|
transmit_flush_timer = 0;
|
||||||
|
}
|
||||||
|
SREG = intr_state;
|
||||||
|
}
|
||||||
|
|
||||||
|
// functions to read the various async serial settings. These
|
||||||
|
// aren't actually used by USB at all (communication is always
|
||||||
|
// at full USB speed), but they are set by the host so we can
|
||||||
|
// set them properly if we're converting the USB to a real serial
|
||||||
|
// communication
|
||||||
|
uint32_t usb_serial_get_baud(void)
|
||||||
|
{
|
||||||
|
uint32_t res;
|
||||||
|
memcpy(&res, cdc_line_coding, sizeof(res));
|
||||||
|
return res;
|
||||||
|
}
|
||||||
|
uint8_t usb_serial_get_stopbits(void)
|
||||||
|
{
|
||||||
|
return cdc_line_coding[4];
|
||||||
|
}
|
||||||
|
uint8_t usb_serial_get_paritytype(void)
|
||||||
|
{
|
||||||
|
return cdc_line_coding[5];
|
||||||
|
}
|
||||||
|
uint8_t usb_serial_get_numbits(void)
|
||||||
|
{
|
||||||
|
return cdc_line_coding[6];
|
||||||
|
}
|
||||||
|
uint8_t usb_serial_get_control(void)
|
||||||
|
{
|
||||||
|
return cdc_line_rtsdtr;
|
||||||
|
}
|
||||||
|
// write the control signals, DCD, DSR, RI, etc
|
||||||
|
// There is no CTS signal. If software on the host has transmitted
|
||||||
|
// data to you but you haven't been calling the getchar function,
|
||||||
|
// it remains buffered (either here or on the host) and can not be
|
||||||
|
// lost because you weren't listening at the right time, like it
|
||||||
|
// would in real serial communication.
|
||||||
|
int8_t usb_serial_set_control(uint8_t signals)
|
||||||
|
{
|
||||||
|
uint8_t intr_state;
|
||||||
|
|
||||||
|
intr_state = SREG;
|
||||||
|
cli();
|
||||||
|
if (!usb_configuration) {
|
||||||
|
// we're not enumerated/configured
|
||||||
|
SREG = intr_state;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
|
||||||
|
UENUM = CDC_ACM_ENDPOINT;
|
||||||
|
if (!(UEINTX & (1<<RWAL))) {
|
||||||
|
// unable to write
|
||||||
|
// TODO; should this try to abort the previously
|
||||||
|
// buffered message??
|
||||||
|
SREG = intr_state;
|
||||||
|
return -1;
|
||||||
|
}
|
||||||
|
UEDATX = 0xA1;
|
||||||
|
UEDATX = 0x20;
|
||||||
|
UEDATX = 0;
|
||||||
|
UEDATX = 0;
|
||||||
|
UEDATX = 0; // 0 seems to work nicely. what if this is 1??
|
||||||
|
UEDATX = 0;
|
||||||
|
UEDATX = 1;
|
||||||
|
UEDATX = 0;
|
||||||
|
UEDATX = signals;
|
||||||
|
UEINTX = 0x3A;
|
||||||
|
SREG = intr_state;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
/**************************************************************************
|
||||||
|
*
|
||||||
|
* 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;
|
||||||
|
|
||||||
|
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;
|
||||||
|
cdc_line_rtsdtr = 0;
|
||||||
|
}
|
||||||
|
if (intbits & (1<<SOFI)) {
|
||||||
|
if (usb_configuration) {
|
||||||
|
t = transmit_flush_timer;
|
||||||
|
if (t) {
|
||||||
|
transmit_flush_timer = --t;
|
||||||
|
if (!t) {
|
||||||
|
UENUM = CDC_TX_ENDPOINT;
|
||||||
|
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 *p;
|
||||||
|
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;
|
||||||
|
cdc_line_rtsdtr = 0;
|
||||||
|
transmit_flush_timer = 0;
|
||||||
|
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 == CDC_GET_LINE_CODING && bmRequestType == 0xA1) {
|
||||||
|
usb_wait_in_ready();
|
||||||
|
p = cdc_line_coding;
|
||||||
|
for (i=0; i<7; i++) {
|
||||||
|
UEDATX = *p++;
|
||||||
|
}
|
||||||
|
usb_send_in();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (bRequest == CDC_SET_LINE_CODING && bmRequestType == 0x21) {
|
||||||
|
usb_wait_receive_out();
|
||||||
|
p = cdc_line_coding;
|
||||||
|
for (i=0; i<7; i++) {
|
||||||
|
*p++ = UEDATX;
|
||||||
|
}
|
||||||
|
usb_ack_out();
|
||||||
|
usb_send_in();
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
if (bRequest == CDC_SET_CONTROL_LINE_STATE && bmRequestType == 0x21) {
|
||||||
|
cdc_line_rtsdtr = wValue;
|
||||||
|
usb_wait_in_ready();
|
||||||
|
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
|
||||||
|
}
|
||||||
|
UECONX = (1<<STALLRQ) | (1<<EPEN); // stall
|
||||||
|
}
|
||||||
|
|
||||||
|
|
||||||
|
|
@ -0,0 +1,124 @@
|
||||||
|
#ifndef usb_serial_h__
|
||||||
|
#define usb_serial_h__
|
||||||
|
|
||||||
|
#include <stdint.h>
|
||||||
|
|
||||||
|
// setup
|
||||||
|
void usb_init(void); // initialize everything
|
||||||
|
uint8_t usb_configured(void); // is the USB port configured
|
||||||
|
|
||||||
|
// receiving data
|
||||||
|
int16_t usb_serial_getchar(void); // receive a character (-1 if timeout/error)
|
||||||
|
uint8_t usb_serial_available(void); // number of bytes in receive buffer
|
||||||
|
void usb_serial_flush_input(void); // discard any buffered input
|
||||||
|
|
||||||
|
// transmitting data
|
||||||
|
int8_t usb_serial_putchar(uint8_t c); // transmit a character
|
||||||
|
int8_t usb_serial_putchar_nowait(uint8_t c); // transmit a character, do not wait
|
||||||
|
int8_t usb_serial_write(const uint8_t *buffer, uint16_t size); // transmit a buffer
|
||||||
|
void usb_serial_flush_output(void); // immediately transmit any buffered output
|
||||||
|
|
||||||
|
// serial parameters
|
||||||
|
uint32_t usb_serial_get_baud(void); // get the baud rate
|
||||||
|
uint8_t usb_serial_get_stopbits(void); // get the number of stop bits
|
||||||
|
uint8_t usb_serial_get_paritytype(void);// get the parity type
|
||||||
|
uint8_t usb_serial_get_numbits(void); // get the number of data bits
|
||||||
|
uint8_t usb_serial_get_control(void); // get the RTS and DTR signal state
|
||||||
|
int8_t usb_serial_set_control(uint8_t signals); // set DSR, DCD, RI, etc
|
||||||
|
|
||||||
|
// constants corresponding to the various serial parameters
|
||||||
|
#define USB_SERIAL_DTR 0x01
|
||||||
|
#define USB_SERIAL_RTS 0x02
|
||||||
|
#define USB_SERIAL_1_STOP 0
|
||||||
|
#define USB_SERIAL_1_5_STOP 1
|
||||||
|
#define USB_SERIAL_2_STOP 2
|
||||||
|
#define USB_SERIAL_PARITY_NONE 0
|
||||||
|
#define USB_SERIAL_PARITY_ODD 1
|
||||||
|
#define USB_SERIAL_PARITY_EVEN 2
|
||||||
|
#define USB_SERIAL_PARITY_MARK 3
|
||||||
|
#define USB_SERIAL_PARITY_SPACE 4
|
||||||
|
#define USB_SERIAL_DCD 0x01
|
||||||
|
#define USB_SERIAL_DSR 0x02
|
||||||
|
#define USB_SERIAL_BREAK 0x04
|
||||||
|
#define USB_SERIAL_RI 0x08
|
||||||
|
#define USB_SERIAL_FRAME_ERR 0x10
|
||||||
|
#define USB_SERIAL_PARITY_ERR 0x20
|
||||||
|
#define USB_SERIAL_OVERRUN_ERR 0x40
|
||||||
|
|
||||||
|
// This file does not include the HID debug functions, so these empty
|
||||||
|
// macros replace them with nothing, so users can compile code that
|
||||||
|
// has calls to these functions.
|
||||||
|
#define usb_debug_putchar(c)
|
||||||
|
#define usb_debug_flush_output()
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
// Everything below this point is only intended for usb_serial.c
|
||||||
|
#ifdef USB_SERIAL_PRIVATE_INCLUDE
|
||||||
|
#include <avr/io.h>
|
||||||
|
#include <avr/pgmspace.h>
|
||||||
|
#include <avr/interrupt.h>
|
||||||
|
|
||||||
|
#define EP_TYPE_CONTROL 0x00
|
||||||
|
#define EP_TYPE_BULK_IN 0x81
|
||||||
|
#define EP_TYPE_BULK_OUT 0x80
|
||||||
|
#define EP_TYPE_INTERRUPT_IN 0xC1
|
||||||
|
#define EP_TYPE_INTERRUPT_OUT 0xC0
|
||||||
|
#define EP_TYPE_ISOCHRONOUS_IN 0x41
|
||||||
|
#define EP_TYPE_ISOCHRONOUS_OUT 0x40
|
||||||
|
#define EP_SINGLE_BUFFER 0x02
|
||||||
|
#define EP_DOUBLE_BUFFER 0x06
|
||||||
|
#define EP_SIZE(s) ((s) == 64 ? 0x30 : \
|
||||||
|
((s) == 32 ? 0x20 : \
|
||||||
|
((s) == 16 ? 0x10 : \
|
||||||
|
0x00)))
|
||||||
|
|
||||||
|
#define MAX_ENDPOINT 4
|
||||||
|
|
||||||
|
#define LSB(n) (n & 255)
|
||||||
|
#define MSB(n) ((n >> 8) & 255)
|
||||||
|
|
||||||
|
#if defined(__AVR_AT90USB162__)
|
||||||
|
#define HW_CONFIG()
|
||||||
|
#define PLL_CONFIG() (PLLCSR = ((1<<PLLE)|(1<<PLLP0)))
|
||||||
|
#define USB_CONFIG() (USBCON = (1<<USBE))
|
||||||
|
#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
|
||||||
|
#elif defined(__AVR_ATmega32U4__)
|
||||||
|
#define HW_CONFIG() (UHWCON = 0x01)
|
||||||
|
#define PLL_CONFIG() (PLLCSR = 0x12)
|
||||||
|
#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
|
||||||
|
#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
|
||||||
|
#elif defined(__AVR_AT90USB646__)
|
||||||
|
#define HW_CONFIG() (UHWCON = 0x81)
|
||||||
|
#define PLL_CONFIG() (PLLCSR = 0x1A)
|
||||||
|
#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
|
||||||
|
#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
|
||||||
|
#elif defined(__AVR_AT90USB1286__)
|
||||||
|
#define HW_CONFIG() (UHWCON = 0x81)
|
||||||
|
#define PLL_CONFIG() (PLLCSR = 0x16)
|
||||||
|
#define USB_CONFIG() (USBCON = ((1<<USBE)|(1<<OTGPADE)))
|
||||||
|
#define USB_FREEZE() (USBCON = ((1<<USBE)|(1<<FRZCLK)))
|
||||||
|
#endif
|
||||||
|
|
||||||
|
// standard control endpoint request types
|
||||||
|
#define GET_STATUS 0
|
||||||
|
#define CLEAR_FEATURE 1
|
||||||
|
#define SET_FEATURE 3
|
||||||
|
#define SET_ADDRESS 5
|
||||||
|
#define GET_DESCRIPTOR 6
|
||||||
|
#define GET_CONFIGURATION 8
|
||||||
|
#define SET_CONFIGURATION 9
|
||||||
|
#define GET_INTERFACE 10
|
||||||
|
#define SET_INTERFACE 11
|
||||||
|
// HID (human interface device)
|
||||||
|
#define HID_GET_REPORT 1
|
||||||
|
#define HID_GET_PROTOCOL 3
|
||||||
|
#define HID_SET_REPORT 9
|
||||||
|
#define HID_SET_IDLE 10
|
||||||
|
#define HID_SET_PROTOCOL 11
|
||||||
|
// CDC (communication class device)
|
||||||
|
#define CDC_SET_LINE_CODING 0x20
|
||||||
|
#define CDC_GET_LINE_CODING 0x21
|
||||||
|
#define CDC_SET_CONTROL_LINE_STATE 0x22
|
||||||
|
#endif
|
||||||
|
#endif
|
||||||
|
|
@ -0,0 +1,75 @@
|
||||||
|
--- usb_serial.c 2011-04-19 05:54:12.000000000 -0400
|
||||||
|
+++ usb_serial.c 2016-06-04 23:48:52.590001697 -0400
|
||||||
|
@@ -30,6 +30,7 @@
|
||||||
|
// Version 1.6: fix zero length packet bug
|
||||||
|
// Version 1.7: fix usb_serial_set_control
|
||||||
|
|
||||||
|
+#include <string.h>
|
||||||
|
#define USB_SERIAL_PRIVATE_INCLUDE
|
||||||
|
#include "usb_serial.h"
|
||||||
|
|
||||||
|
@@ -146,7 +147,7 @@
|
||||||
|
// 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[] = {
|
||||||
|
+static const uint8_t PROGMEM device_descriptor[] = {
|
||||||
|
18, // bLength
|
||||||
|
1, // bDescriptorType
|
||||||
|
0x00, 0x02, // bcdUSB
|
||||||
|
@@ -164,7 +165,7 @@
|
||||||
|
};
|
||||||
|
|
||||||
|
#define CONFIG1_DESC_SIZE (9+9+5+5+4+5+7+9+7+7)
|
||||||
|
-static uint8_t PROGMEM config1_descriptor[CONFIG1_DESC_SIZE] = {
|
||||||
|
+static const 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;
|
||||||
|
@@ -248,22 +249,22 @@
|
||||||
|
uint8_t bDescriptorType;
|
||||||
|
int16_t wString[];
|
||||||
|
};
|
||||||
|
-static struct usb_string_descriptor_struct PROGMEM string0 = {
|
||||||
|
+static const struct usb_string_descriptor_struct PROGMEM string0 = {
|
||||||
|
4,
|
||||||
|
3,
|
||||||
|
{0x0409}
|
||||||
|
};
|
||||||
|
-static struct usb_string_descriptor_struct PROGMEM string1 = {
|
||||||
|
+static const struct usb_string_descriptor_struct PROGMEM string1 = {
|
||||||
|
sizeof(STR_MANUFACTURER),
|
||||||
|
3,
|
||||||
|
STR_MANUFACTURER
|
||||||
|
};
|
||||||
|
-static struct usb_string_descriptor_struct PROGMEM string2 = {
|
||||||
|
+static const struct usb_string_descriptor_struct PROGMEM string2 = {
|
||||||
|
sizeof(STR_PRODUCT),
|
||||||
|
3,
|
||||||
|
STR_PRODUCT
|
||||||
|
};
|
||||||
|
-static struct usb_string_descriptor_struct PROGMEM string3 = {
|
||||||
|
+static const struct usb_string_descriptor_struct PROGMEM string3 = {
|
||||||
|
sizeof(STR_SERIAL_NUMBER),
|
||||||
|
3,
|
||||||
|
STR_SERIAL_NUMBER
|
||||||
|
@@ -271,7 +272,7 @@
|
||||||
|
|
||||||
|
// This table defines which descriptor data is sent for each specific
|
||||||
|
// request from the host (in wValue and wIndex).
|
||||||
|
-static struct descriptor_list_struct {
|
||||||
|
+static const struct descriptor_list_struct {
|
||||||
|
uint16_t wValue;
|
||||||
|
uint16_t wIndex;
|
||||||
|
const uint8_t *addr;
|
||||||
|
@@ -646,7 +647,9 @@
|
||||||
|
// communication
|
||||||
|
uint32_t usb_serial_get_baud(void)
|
||||||
|
{
|
||||||
|
- return *(uint32_t *)cdc_line_coding;
|
||||||
|
+ uint32_t res;
|
||||||
|
+ memcpy(&res, cdc_line_coding, sizeof(res));
|
||||||
|
+ return res;
|
||||||
|
}
|
||||||
|
uint8_t usb_serial_get_stopbits(void)
|
||||||
|
{
|
||||||
|
|
@ -12,6 +12,8 @@ choice
|
||||||
bool "atmega168"
|
bool "atmega168"
|
||||||
config MACH_atmega644p
|
config MACH_atmega644p
|
||||||
bool "atmega644p"
|
bool "atmega644p"
|
||||||
|
config MACH_at90usb1286
|
||||||
|
bool "at90usb1286"
|
||||||
config MACH_atmega1280
|
config MACH_atmega1280
|
||||||
bool "atmega1280"
|
bool "atmega1280"
|
||||||
config MACH_atmega2560
|
config MACH_atmega2560
|
||||||
|
|
@ -22,6 +24,7 @@ config MCU
|
||||||
string
|
string
|
||||||
default "atmega168" if MACH_atmega168
|
default "atmega168" if MACH_atmega168
|
||||||
default "atmega644p" if MACH_atmega644p
|
default "atmega644p" if MACH_atmega644p
|
||||||
|
default "at90usb1286" if MACH_at90usb1286
|
||||||
default "atmega1280" if MACH_atmega1280
|
default "atmega1280" if MACH_atmega1280
|
||||||
default "atmega2560" if MACH_atmega2560
|
default "atmega2560" if MACH_atmega2560
|
||||||
|
|
||||||
|
|
@ -49,7 +52,12 @@ config AVR_STACK_SIZE
|
||||||
config AVR_WATCHDOG
|
config AVR_WATCHDOG
|
||||||
bool "Support for automated reset on watchdog timeout"
|
bool "Support for automated reset on watchdog timeout"
|
||||||
default y
|
default y
|
||||||
|
config AVR_USBSERIAL
|
||||||
|
bool
|
||||||
|
depends on MACH_at90usb1286
|
||||||
|
default y
|
||||||
config AVR_SERIAL
|
config AVR_SERIAL
|
||||||
|
depends on !AVR_USBSERIAL
|
||||||
bool
|
bool
|
||||||
default y
|
default y
|
||||||
config SERIAL_BAUD
|
config SERIAL_BAUD
|
||||||
|
|
|
||||||
|
|
@ -9,6 +9,7 @@ LDFLAGS-y += -Wl,--relax
|
||||||
# Add avr source files
|
# Add avr source files
|
||||||
src-y += avr/main.c avr/timer.c avr/gpio.c avr/alloc.c
|
src-y += avr/main.c avr/timer.c avr/gpio.c avr/alloc.c
|
||||||
src-$(CONFIG_AVR_WATCHDOG) += avr/watchdog.c
|
src-$(CONFIG_AVR_WATCHDOG) += avr/watchdog.c
|
||||||
|
src-$(CONFIG_AVR_USBSERIAL) += avr/usbserial.c ../lib/pjrc_usb_serial/usb_serial.c
|
||||||
src-$(CONFIG_AVR_SERIAL) += avr/serial.c
|
src-$(CONFIG_AVR_SERIAL) += avr/serial.c
|
||||||
|
|
||||||
# Build the additional hex output file
|
# Build the additional hex output file
|
||||||
|
|
|
||||||
|
|
@ -29,7 +29,10 @@ static volatile uint8_t * const digital_regs[] PROGMEM = {
|
||||||
#endif
|
#endif
|
||||||
&PINB, &PINC, &PIND,
|
&PINB, &PINC, &PIND,
|
||||||
#ifdef PINE
|
#ifdef PINE
|
||||||
&PINE, &PINF, &PING, &PINH, NULL, &PINJ, &PINK, &PINL
|
&PINE, &PINF,
|
||||||
|
#endif
|
||||||
|
#ifdef PING
|
||||||
|
&PING, &PINH, NULL, &PINJ, &PINK, &PINL
|
||||||
#endif
|
#endif
|
||||||
};
|
};
|
||||||
|
|
||||||
|
|
@ -64,6 +67,17 @@ static const struct gpio_pwm_info pwm_regs[] PROGMEM = {
|
||||||
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('D', 4), 0 },
|
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('D', 4), 0 },
|
||||||
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('D', 7), GP_8BIT|GP_AFMT },
|
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('D', 7), GP_8BIT|GP_AFMT },
|
||||||
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('D', 6), GP_8BIT|GP_AFMT },
|
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('D', 6), GP_8BIT|GP_AFMT },
|
||||||
|
#elif CONFIG_MACH_at90usb1286
|
||||||
|
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('B', 7), GP_8BIT },
|
||||||
|
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('D', 0), GP_8BIT },
|
||||||
|
// { &OCR1A, &TCCR1A, &TCCR1B, 1<<COM1A1, GPIO('B', 5), 0 },
|
||||||
|
// { &OCR1B, &TCCR1A, &TCCR1B, 1<<COM1B1, GPIO('B', 6), 0 },
|
||||||
|
// { &OCR1C, &TCCR1A, &TCCR1B, 1<<COM1C1, GPIO('B', 7), 0 },
|
||||||
|
{ &OCR2A, &TCCR2A, &TCCR2B, 1<<COM2A1, GPIO('B', 4), GP_8BIT|GP_AFMT },
|
||||||
|
{ &OCR2B, &TCCR2A, &TCCR2B, 1<<COM2B1, GPIO('D', 1), GP_8BIT|GP_AFMT },
|
||||||
|
{ &OCR3A, &TCCR3A, &TCCR3B, 1<<COM3A1, GPIO('C', 6), 0 },
|
||||||
|
{ &OCR3B, &TCCR3A, &TCCR3B, 1<<COM3B1, GPIO('C', 5), 0 },
|
||||||
|
{ &OCR3C, &TCCR3A, &TCCR3B, 1<<COM3C1, GPIO('C', 4), 0 },
|
||||||
#elif CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
|
#elif CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
|
||||||
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('B', 7), GP_8BIT },
|
{ &OCR0A, &TCCR0A, &TCCR0B, 1<<COM0A1, GPIO('B', 7), GP_8BIT },
|
||||||
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('G', 5), GP_8BIT },
|
{ &OCR0B, &TCCR0A, &TCCR0B, 1<<COM0B1, GPIO('G', 5), GP_8BIT },
|
||||||
|
|
@ -95,6 +109,9 @@ static const struct gpio_adc_info adc_pins[] PROGMEM = {
|
||||||
#elif CONFIG_MACH_atmega644p
|
#elif CONFIG_MACH_atmega644p
|
||||||
{ GPIO('A', 0) }, { GPIO('A', 1) }, { GPIO('A', 2) }, { GPIO('A', 3) },
|
{ GPIO('A', 0) }, { GPIO('A', 1) }, { GPIO('A', 2) }, { GPIO('A', 3) },
|
||||||
{ GPIO('A', 4) }, { GPIO('A', 5) }, { GPIO('A', 6) }, { GPIO('A', 7) },
|
{ GPIO('A', 4) }, { GPIO('A', 5) }, { GPIO('A', 6) }, { GPIO('A', 7) },
|
||||||
|
#elif CONFIG_MACH_at90usb1286
|
||||||
|
{ GPIO('F', 0) }, { GPIO('F', 1) }, { GPIO('F', 2) }, { GPIO('F', 3) },
|
||||||
|
{ GPIO('F', 4) }, { GPIO('F', 5) }, { GPIO('F', 6) }, { GPIO('F', 7) },
|
||||||
#elif CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
|
#elif CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
|
||||||
{ GPIO('F', 0) }, { GPIO('F', 1) }, { GPIO('F', 2) }, { GPIO('F', 3) },
|
{ GPIO('F', 0) }, { GPIO('F', 1) }, { GPIO('F', 2) }, { GPIO('F', 3) },
|
||||||
{ GPIO('F', 4) }, { GPIO('F', 5) }, { GPIO('F', 6) }, { GPIO('F', 7) },
|
{ GPIO('F', 4) }, { GPIO('F', 5) }, { GPIO('F', 6) }, { GPIO('F', 7) },
|
||||||
|
|
@ -107,7 +124,7 @@ static const struct gpio_adc_info adc_pins[] PROGMEM = {
|
||||||
static const uint8_t SS = GPIO('B', 2), SCK = GPIO('B', 5), MOSI = GPIO('B', 3);
|
static const uint8_t SS = GPIO('B', 2), SCK = GPIO('B', 5), MOSI = GPIO('B', 3);
|
||||||
#elif CONFIG_MACH_atmega644p
|
#elif CONFIG_MACH_atmega644p
|
||||||
static const uint8_t SS = GPIO('B', 4), SCK = GPIO('B', 7), MOSI = GPIO('B', 5);
|
static const uint8_t SS = GPIO('B', 4), SCK = GPIO('B', 7), MOSI = GPIO('B', 5);
|
||||||
#elif CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
|
#elif CONFIG_MACH_at90usb1286 || CONFIG_MACH_atmega1280 || CONFIG_MACH_atmega2560
|
||||||
static const uint8_t SS = GPIO('B', 0), SCK = GPIO('B', 1), MOSI = GPIO('B', 2);
|
static const uint8_t SS = GPIO('B', 0), SCK = GPIO('B', 1), MOSI = GPIO('B', 2);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
|
|
||||||
|
|
@ -0,0 +1,65 @@
|
||||||
|
// Wrappers for AVR usb serial.
|
||||||
|
//
|
||||||
|
// Copyright (C) 2016 Kevin O'Connor <kevin@koconnor.net>
|
||||||
|
//
|
||||||
|
// This file may be distributed under the terms of the GNU GPLv3 license.
|
||||||
|
|
||||||
|
#include <avr/interrupt.h> // USART0_RX_vect
|
||||||
|
#include <string.h> // memmove
|
||||||
|
#include "../lib/pjrc_usb_serial/usb_serial.h"
|
||||||
|
#include "sched.h" // DECL_INIT
|
||||||
|
|
||||||
|
#define USBSERIAL_BUFFER_SIZE 64
|
||||||
|
static char receive_buf[USBSERIAL_BUFFER_SIZE];
|
||||||
|
static uint8_t receive_pos;
|
||||||
|
static char transmit_buf[USBSERIAL_BUFFER_SIZE];
|
||||||
|
|
||||||
|
static void
|
||||||
|
usbserial_init(void)
|
||||||
|
{
|
||||||
|
usb_init();
|
||||||
|
}
|
||||||
|
DECL_INIT(usbserial_init);
|
||||||
|
|
||||||
|
// Return a buffer (and length) containing any incoming messages
|
||||||
|
char *
|
||||||
|
console_get_input(uint8_t *plen)
|
||||||
|
{
|
||||||
|
for (;;) {
|
||||||
|
if (receive_pos >= sizeof(receive_buf))
|
||||||
|
break;
|
||||||
|
int16_t ret = usb_serial_getchar();
|
||||||
|
if (ret == -1)
|
||||||
|
break;
|
||||||
|
receive_buf[receive_pos++] = ret;
|
||||||
|
}
|
||||||
|
*plen = receive_pos;
|
||||||
|
return receive_buf;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Remove from the receive buffer the given number of bytes
|
||||||
|
void
|
||||||
|
console_pop_input(uint8_t len)
|
||||||
|
{
|
||||||
|
uint8_t needcopy = receive_pos - len;
|
||||||
|
if (needcopy)
|
||||||
|
memmove(receive_buf, &receive_buf[len], needcopy);
|
||||||
|
receive_pos = needcopy;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Return an output buffer that the caller may fill with transmit messages
|
||||||
|
char *
|
||||||
|
console_get_output(uint8_t len)
|
||||||
|
{
|
||||||
|
if (len > sizeof(transmit_buf))
|
||||||
|
return NULL;
|
||||||
|
return transmit_buf;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Accept the given number of bytes added to the transmit buffer
|
||||||
|
void
|
||||||
|
console_push_output(uint8_t len)
|
||||||
|
{
|
||||||
|
usb_serial_write((void*)transmit_buf, len);
|
||||||
|
usb_serial_flush_output();
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue