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Merge pull request #438 from geertu/teensy3_usb_triple_serial 

Teensy3 usb triple serial
teensy4-core
Paul Stoffregen 4 years ago
parent
224b97bb3f b515629a87
commit
750217413d
No account linked to committer's email address
17 changed files with 1171 additions and 489 deletions
Split View Show Diff Stats
  1. +2
    -0
      teensy3/WProgram.h
  2. +103
    -73
      teensy3/usb_desc.c
  3. +81
    -0
      teensy3/usb_desc.h
  4. +62
    -7
      teensy3/usb_dev.c
  5. +12
    -9
      teensy3/usb_dev.h
  6. +18
    -1
      teensy3/usb_inst.cpp
  7. +7
    -268
      teensy3/usb_serial.c
  8. +7
    -131
      teensy3/usb_serial.h
  9. +46
    -0
      teensy3/usb_serial2.c
  10. +48
    -0
      teensy3/usb_serial2.h
  11. +46
    -0
      teensy3/usb_serial3.c
  12. +48
    -0
      teensy3/usb_serial3.h
  13. +300
    -0
      teensy3/usb_serial_port.c
  14. +78
    -0
      teensy3/usb_serial_port.h
  15. +259
    -0
      teensy3/usb_serial_template.h
  16. +48
    -0
      teensy3/usb_undef.h
  17. +6
    -0
      teensy3/yield.cpp

+ 2
- 0
teensy3/WProgram.h View File

@@ -52,6 +52,8 @@

#include "avr_emulation.h"
#include "usb_serial.h"
#include "usb_serial2.h"
#include "usb_serial3.h"
#include "usb_seremu.h"
#include "usb_keyboard.h"
#include "usb_mouse.h"

+ 103
- 73
teensy3/usb_desc.c View File

@@ -484,7 +484,21 @@ static uint8_t flightsim_report_desc[] = {
#define CDC_DATA_INTERFACE_DESC_SIZE 0
#endif

#define MIDI_INTERFACE_DESC_POS CDC_DATA_INTERFACE_DESC_POS+CDC_DATA_INTERFACE_DESC_SIZE
#define CDC2_DATA_INTERFACE_DESC_POS CDC_DATA_INTERFACE_DESC_POS+CDC_DATA_INTERFACE_DESC_SIZE
#ifdef CDC2_DATA_INTERFACE
#define CDC2_DATA_INTERFACE_DESC_SIZE 8 + 9+5+5+4+5+7+9+7+7
#else
#define CDC2_DATA_INTERFACE_DESC_SIZE 0
#endif

#define CDC3_DATA_INTERFACE_DESC_POS CDC2_DATA_INTERFACE_DESC_POS+CDC2_DATA_INTERFACE_DESC_SIZE
#ifdef CDC3_DATA_INTERFACE
#define CDC3_DATA_INTERFACE_DESC_SIZE 8 + 9+5+5+4+5+7+9+7+7
#else
#define CDC3_DATA_INTERFACE_DESC_SIZE 0
#endif

#define MIDI_INTERFACE_DESC_POS CDC3_DATA_INTERFACE_DESC_POS+CDC3_DATA_INTERFACE_DESC_SIZE
#ifdef MIDI_INTERFACE
#if !defined(MIDI_NUM_CABLES) || MIDI_NUM_CABLES < 1 || MIDI_NUM_CABLES > 16
#error "MIDI_NUM_CABLES must be defined between 1 to 16"
@@ -580,6 +594,82 @@ static uint8_t flightsim_report_desc[] = {
// USB Configuration
// **************************************************************

#define EMIT_CDC_IAD_DESCRIPTOR(prefix) \
/* interface association descriptor, USB ECN, Table 9-Z */ \
8, /* bLength */ \
11, /* bDescriptorType */ \
prefix ## _STATUS_INTERFACE, /* bFirstInterface */ \
2, /* bInterfaceCount */ \
0x02, /* bFunctionClass */ \
0x02, /* bFunctionSubClass */ \
0x01, /* bFunctionProtocol */ \
0 /* iFunction */

#define EMIT_CDC_DESCRIPTORS(prefix) \
/* interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 */ \
9, /* bLength */ \
4, /* bDescriptorType */ \
prefix ## _STATUS_INTERFACE, /* 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 */ \
prefix ## _STATUS_INTERFACE, /* bMasterInterface */ \
prefix ## _DATA_INTERFACE, /* bSlaveInterface0 */ \
/* endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 */ \
7, /* bLength */ \
5, /* bDescriptorType */ \
prefix ## _ACM_ENDPOINT | 0x80, /* bEndpointAddress */ \
0x03, /* bmAttributes (0x03=intr) */ \
prefix ## _ACM_SIZE, 0, /* wMaxPacketSize */ \
64, /* bInterval */ \
/* interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12 */ \
9, /* bLength */ \
4, /* bDescriptorType */ \
prefix ## _DATA_INTERFACE, /* 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 */ \
prefix ## _RX_ENDPOINT, /* bEndpointAddress */ \
0x02, /* bmAttributes (0x02=bulk) */ \
prefix ## _RX_SIZE, 0, /* wMaxPacketSize */ \
0, /* bInterval */ \
/* endpoint descriptor, USB spec 9.6.6, page 269-271, Table 9-13 */ \
7, /* bLength */ \
5, /* bDescriptorType */ \
prefix ## _TX_ENDPOINT | 0x80, /* bEndpointAddress */ \
0x02, /* bmAttributes (0x02=bulk) */ \
prefix ## _TX_SIZE, 0, /* wMaxPacketSize */ \
0 /* bInterval */ \

// USB Configuration Descriptor. This huge descriptor tells all
// of the devices capbilities.
static uint8_t config_descriptor[CONFIG_DESC_SIZE] = {
@@ -595,83 +685,23 @@ static uint8_t config_descriptor[CONFIG_DESC_SIZE] = {
50, // bMaxPower

#ifdef CDC_IAD_DESCRIPTOR
// interface association descriptor, USB ECN, Table 9-Z
8, // bLength
11, // bDescriptorType
CDC_STATUS_INTERFACE, // bFirstInterface
2, // bInterfaceCount
0x02, // bFunctionClass
0x02, // bFunctionSubClass
0x01, // bFunctionProtocol
0, // iFunction
EMIT_CDC_IAD_DESCRIPTOR(CDC),
#endif

#ifdef CDC_DATA_INTERFACE
// interface descriptor, USB spec 9.6.5, page 267-269, Table 9-12
9, // bLength
4, // bDescriptorType
CDC_STATUS_INTERFACE, // 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
CDC_STATUS_INTERFACE, // bMasterInterface
CDC_DATA_INTERFACE, // 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
CDC_DATA_INTERFACE, // 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
EMIT_CDC_DESCRIPTORS(CDC),
#endif // CDC_DATA_INTERFACE

#ifdef CDC2_DATA_INTERFACE
EMIT_CDC_IAD_DESCRIPTOR(CDC2),
EMIT_CDC_DESCRIPTORS(CDC2),
#endif // CDC2_DATA_INTERFACE

#ifdef CDC3_DATA_INTERFACE
EMIT_CDC_IAD_DESCRIPTOR(CDC3),
EMIT_CDC_DESCRIPTORS(CDC3),
#endif // CDC3_DATA_INTERFACE

#ifdef MIDI_INTERFACE
// Standard MS Interface Descriptor,
9, // bLength

+ 81
- 0
teensy3/usb_desc.h View File

@@ -140,6 +140,87 @@ let me know? http://forum.pjrc.com/forums/4-Suggestions-amp-Bug-Reports
#define ENDPOINT3_CONFIG ENDPOINT_RECEIVE_ONLY
#define ENDPOINT4_CONFIG ENDPOINT_TRANSMIT_ONLY

#elif defined(USB_DUAL_SERIAL)
#define VENDOR_ID 0x16C0
#define PRODUCT_ID 0x0483
#define MANUFACTURER_NAME {'T','e','e','n','s','y','d','u','i','n','o'}
#define MANUFACTURER_NAME_LEN 11
#define PRODUCT_NAME {'D','u','a','l',' ','S','e','r','i','a','l'}
#define PRODUCT_NAME_LEN 11
#define EP0_SIZE 64
#define NUM_ENDPOINTS 7
#define NUM_USB_BUFFERS 22
#define NUM_INTERFACE 4
#define CDC_IAD_DESCRIPTOR 1 // Serial
#define CDC_STATUS_INTERFACE 0
#define CDC_DATA_INTERFACE 1
#define CDC_ACM_ENDPOINT 2
#define CDC_RX_ENDPOINT 3
#define CDC_TX_ENDPOINT 4
#define CDC_ACM_SIZE 16
#define CDC_RX_SIZE 64
#define CDC_TX_SIZE 64
#define CDC2_STATUS_INTERFACE 2 // SerialA
#define CDC2_DATA_INTERFACE 3
#define CDC2_ACM_ENDPOINT 5
#define CDC2_RX_ENDPOINT 6
#define CDC2_TX_ENDPOINT 7
#define CDC2_ACM_SIZE 16
#define CDC2_RX_SIZE 64
#define CDC2_TX_SIZE 64
#define ENDPOINT2_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT3_CONFIG ENDPOINT_RECEIVE_ONLY
#define ENDPOINT4_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT5_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT6_CONFIG ENDPOINT_RECEIVE_ONLY
#define ENDPOINT7_CONFIG ENDPOINT_TRANSMIT_ONLY

#elif defined(USB_TRIPLE_SERIAL)
#define VENDOR_ID 0x16C0
#define PRODUCT_ID 0x0483
#define MANUFACTURER_NAME {'T','e','e','n','s','y','d','u','i','n','o'}
#define MANUFACTURER_NAME_LEN 11
#define PRODUCT_NAME {'T','r','i','p','l','e',' ','S','e','r','i','a','l'}
#define PRODUCT_NAME_LEN 13
#define EP0_SIZE 64
#define NUM_ENDPOINTS 10
#define NUM_USB_BUFFERS 32
#define NUM_INTERFACE 6
#define CDC_IAD_DESCRIPTOR 1 // Serial
#define CDC_STATUS_INTERFACE 0
#define CDC_DATA_INTERFACE 1
#define CDC_ACM_ENDPOINT 2
#define CDC_RX_ENDPOINT 3
#define CDC_TX_ENDPOINT 4
#define CDC_ACM_SIZE 16
#define CDC_RX_SIZE 64
#define CDC_TX_SIZE 64
#define CDC2_STATUS_INTERFACE 2 // SerialA
#define CDC2_DATA_INTERFACE 3
#define CDC2_ACM_ENDPOINT 5
#define CDC2_RX_ENDPOINT 6
#define CDC2_TX_ENDPOINT 7
#define CDC2_ACM_SIZE 16
#define CDC2_RX_SIZE 64
#define CDC2_TX_SIZE 64
#define CDC3_STATUS_INTERFACE 4 // SerialB
#define CDC3_DATA_INTERFACE 5
#define CDC3_ACM_ENDPOINT 8
#define CDC3_RX_ENDPOINT 9
#define CDC3_TX_ENDPOINT 10
#define CDC3_ACM_SIZE 16
#define CDC3_RX_SIZE 64
#define CDC3_TX_SIZE 64
#define ENDPOINT2_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT3_CONFIG ENDPOINT_RECEIVE_ONLY
#define ENDPOINT4_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT5_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT6_CONFIG ENDPOINT_RECEIVE_ONLY
#define ENDPOINT7_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT8_CONFIG ENDPOINT_TRANSMIT_ONLY
#define ENDPOINT9_CONFIG ENDPOINT_RECEIVE_ONLY
#define ENDPOINT10_CONFIG ENDPOINT_TRANSMIT_ONLY

#elif defined(USB_KEYBOARDONLY)
#define VENDOR_ID 0x16C0
#define PRODUCT_ID 0x04D0

+ 62
- 7
teensy3/usb_dev.c View File

@@ -353,12 +353,30 @@ static void usb_setup(void)
//serial_print("desc: not found\n");
endpoint0_stall();
return;
#if defined(CDC_STATUS_INTERFACE)
case 0x2221: // CDC_SET_CONTROL_LINE_STATE
usb_cdc_line_rtsdtr_millis = systick_millis_count;
usb_cdc_line_rtsdtr = setup.wValue;
switch (setup.wIndex) {
#ifdef CDC_STATUS_INTERFACE
case CDC_STATUS_INTERFACE:
usb_cdc_line_rtsdtr_millis = systick_millis_count;
usb_cdc_line_rtsdtr = setup.wValue;
break;
#endif
#ifdef CDC2_STATUS_INTERFACE
case CDC2_STATUS_INTERFACE:
usb_cdc2_line_rtsdtr_millis = systick_millis_count;
usb_cdc2_line_rtsdtr = setup.wValue;
break;
#endif
#ifdef CDC3_STATUS_INTERFACE
case CDC3_STATUS_INTERFACE:
usb_cdc3_line_rtsdtr_millis = systick_millis_count;
usb_cdc3_line_rtsdtr = setup.wValue;
break;
#endif
}
//serial_print("set control line state\n");
break;
#ifdef CDC_STATUS_INTERFACE
case 0x2321: // CDC_SEND_BREAK
break;
case 0x2021: // CDC_SET_LINE_CODING
@@ -594,10 +612,29 @@ static void usb_control(uint32_t stat)
case 0x01: // OUT transaction received from host
case 0x02:
//serial_print("PID=OUT\n");
#ifdef CDC_STATUS_INTERFACE
if (setup.wRequestAndType == 0x2021 /*CDC_SET_LINE_CODING*/) {
int i;
uint8_t *dst = (uint8_t *)usb_cdc_line_coding;
uint8_t *dst = NULL;
switch (setup.wIndex) {
#ifdef CDC_STATUS_INTERFACE
case CDC_STATUS_INTERFACE:
dst = (uint8_t *)usb_cdc_line_coding;
break;
#endif
#ifdef CDC2_STATUS_INTERFACE
case CDC2_STATUS_INTERFACE:
dst = (uint8_t *)usb_cdc2_line_coding;
break;
#endif
#ifdef CDC3_STATUS_INTERFACE
case CDC3_STATUS_INTERFACE:
dst = (uint8_t *)usb_cdc3_line_coding;
break;
#endif
}
if (!dst)
break;

//serial_print("set line coding ");
for (i=0; i<7; i++) {
//serial_phex(*buf);
@@ -605,10 +642,13 @@ static void usb_control(uint32_t stat)
}
//serial_phex32(usb_cdc_line_coding[0]);
//serial_print("\n");
if (usb_cdc_line_coding[0] == 134) usb_reboot_timer = 15;
#ifdef CDC_STATUS_INTERFACE
if (setup.wIndex == CDC_STATUS_INTERFACE &&
usb_cdc_line_coding[0] == 134)
usb_reboot_timer = 15;
#endif
endpoint0_transmit(NULL, 0);
}
#endif
#ifdef KEYBOARD_INTERFACE
if (setup.word1 == 0x02000921 && setup.word2 == ((1<<16)|KEYBOARD_INTERFACE)) {
keyboard_leds = buf[0];
@@ -859,6 +899,7 @@ void _reboot_Teensyduino_(void)
{
// TODO: initialize R0 with a code....
__asm__ volatile("bkpt");
__builtin_unreachable();
}


@@ -888,6 +929,20 @@ void usb_isr(void)
if (t == 0) usb_serial_flush_callback();
}
#endif
#ifdef CDC2_DATA_INTERFACE
t = usb_cdc2_transmit_flush_timer;
if (t) {
usb_cdc2_transmit_flush_timer = --t;
if (t == 0) usb_serial2_flush_callback();
}
#endif
#ifdef CDC3_DATA_INTERFACE
t = usb_cdc3_transmit_flush_timer;
if (t) {
usb_cdc3_transmit_flush_timer = --t;
if (t == 0) usb_serial3_flush_callback();
}
#endif
#ifdef SEREMU_INTERFACE
t = usb_seremu_transmit_flush_timer;
if (t) {

+ 12
- 9
teensy3/usb_dev.h View File

@@ -67,15 +67,6 @@ static inline uint32_t usb_rx_byte_count(uint32_t endpoint)
return usb_rx_byte_count_data[endpoint];
}

#ifdef CDC_DATA_INTERFACE
extern uint32_t usb_cdc_line_coding[2];
extern volatile uint32_t usb_cdc_line_rtsdtr_millis;
extern volatile uint32_t systick_millis_count;
extern volatile uint8_t usb_cdc_line_rtsdtr;
extern volatile uint8_t usb_cdc_transmit_flush_timer;
extern void usb_serial_flush_callback(void);
#endif

#ifdef SEREMU_INTERFACE
extern volatile uint8_t usb_seremu_transmit_flush_timer;
extern void usb_seremu_flush_callback(void);
@@ -119,6 +110,18 @@ extern void usb_touchscreen_update_callback(void);
}
#endif

#ifdef CDC_DATA_INTERFACE
#include "usb_serial.h"
#endif

#ifdef CDC2_DATA_INTERFACE
#include "usb_serial2.h"
#endif

#ifdef CDC3_DATA_INTERFACE
#include "usb_serial3.h"
#endif

#else // F_CPU < 20000000

#ifdef __cplusplus

+ 18
- 1
teensy3/usb_inst.cpp View File

@@ -39,6 +39,18 @@ usb_serial_class Serial;
#endif
#endif

#ifdef CDC2_DATA_INTERFACE
#ifdef CDC2_STATUS_INTERFACE
usb_serial2_class SerialA;
#endif
#endif

#ifdef CDC3_DATA_INTERFACE
#ifdef CDC3_STATUS_INTERFACE
usb_serial3_class SerialB;
#endif
#endif

#ifdef MIDI_INTERFACE
usb_midi_class usbMIDI;
#endif
@@ -75,7 +87,8 @@ usb_serial_class Serial;

#else // F_CPU < 20 MHz

#if defined(USB_SERIAL) || defined(USB_SERIAL_HID)
#if defined(USB_SERIAL) || defined(USB_DUAL_SERIAL) || \
defined(USB_TRIPLE_SERIAL) || defined(USB_SERIAL_HID)
usb_serial_class Serial;
#elif (USB_DISABLED)
usb_serial_class Serial;
@@ -87,3 +100,7 @@ usb_seremu_class Serial;

void serialEvent() __attribute__((weak));
void serialEvent() {}
void serialEventA() __attribute__((weak));
void serialEventA() {}
void serialEventB() __attribute__((weak));
void serialEventB() {}

+ 7
- 268
teensy3/usb_serial.c View File

@@ -29,278 +29,17 @@
*/

#include "usb_dev.h"
#include "usb_serial.h"
#include "core_pins.h" // for yield()
//#include "HardwareSerial.h"
#include <string.h> // for memcpy()

// defined by usb_dev.h -> usb_desc.h
#if defined(CDC_STATUS_INTERFACE) && defined(CDC_DATA_INTERFACE)
#if F_CPU >= 20000000

uint32_t usb_cdc_line_coding[2];
volatile uint32_t usb_cdc_line_rtsdtr_millis;
volatile uint8_t usb_cdc_line_rtsdtr=0;
volatile uint8_t usb_cdc_transmit_flush_timer=0;

static usb_packet_t *rx_packet=NULL;
static usb_packet_t *tx_packet=NULL;
static volatile uint8_t tx_noautoflush=0;

#define TRANSMIT_FLUSH_TIMEOUT 5 /* in milliseconds */

// get the next character, or -1 if nothing received
int usb_serial_getchar(void)
{
unsigned int i;
int c;

if (!rx_packet) {
if (!usb_configuration) return -1;
rx_packet = usb_rx(CDC_RX_ENDPOINT);
if (!rx_packet) return -1;
}
i = rx_packet->index;
c = rx_packet->buf[i++];
if (i >= rx_packet->len) {
usb_free(rx_packet);
rx_packet = NULL;
} else {
rx_packet->index = i;
}
return c;
}

// peek at the next character, or -1 if nothing received
int usb_serial_peekchar(void)
{
if (!rx_packet) {
if (!usb_configuration) return -1;
rx_packet = usb_rx(CDC_RX_ENDPOINT);
if (!rx_packet) return -1;
}
if (!rx_packet) return -1;
return rx_packet->buf[rx_packet->index];
}

// number of bytes available in the receive buffer
int usb_serial_available(void)
{
int count;
count = usb_rx_byte_count(CDC_RX_ENDPOINT);
if (rx_packet) count += rx_packet->len - rx_packet->index;
return count;
}

// read a block of bytes to a buffer
int usb_serial_read(void *buffer, uint32_t size)
{
uint8_t *p = (uint8_t *)buffer;
uint32_t qty, count=0;

while (size) {
if (!usb_configuration) break;
if (!rx_packet) {
rx:
rx_packet = usb_rx(CDC_RX_ENDPOINT);
if (!rx_packet) break;
if (rx_packet->len == 0) {
usb_free(rx_packet);
goto rx;
}
}
qty = rx_packet->len - rx_packet->index;
if (qty > size) qty = size;
memcpy(p, rx_packet->buf + rx_packet->index, qty);
p += qty;
count += qty;
size -= qty;
rx_packet->index += qty;
if (rx_packet->index >= rx_packet->len) {
usb_free(rx_packet);
rx_packet = NULL;
}
}
return count;
}

// discard any buffered input
void usb_serial_flush_input(void)
{
usb_packet_t *rx;

if (!usb_configuration) return;
if (rx_packet) {
usb_free(rx_packet);
rx_packet = NULL;
}
while (1) {
rx = usb_rx(CDC_RX_ENDPOINT);
if (!rx) break;
usb_free(rx);
}
}

// Maximum number of transmit packets to queue so we don't starve other endpoints for memory
#define TX_PACKET_LIMIT 8

// When the PC isn't listening, how long do we wait before discarding data? If this is
// too short, we risk losing data during the stalls that are common with ordinary desktop
// software. If it's too long, we stall the user's program when no software is running.
#define TX_TIMEOUT_MSEC 70
#if F_CPU == 256000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1706)
#elif F_CPU == 240000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1600)
#elif F_CPU == 216000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1440)
#elif F_CPU == 192000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1280)
#elif F_CPU == 180000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1200)
#elif F_CPU == 168000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)
#elif F_CPU == 144000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)
#elif F_CPU == 120000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)
#elif F_CPU == 96000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)
#elif F_CPU == 72000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)
#elif F_CPU == 48000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)
#elif F_CPU == 24000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)
#endif

// When we've suffered the transmit timeout, don't wait again until the computer
// begins accepting data. If no software is running to receive, we'll just discard
// data as rapidly as Serial.print() can generate it, until there's something to
// actually receive it.
static uint8_t transmit_previous_timeout=0;


// transmit a character. 0 returned on success, -1 on error
int usb_serial_putchar(uint8_t c)
{
return usb_serial_write(&c, 1);
}


int usb_serial_write(const void *buffer, uint32_t size)
{
uint32_t ret = size;
uint32_t len;
uint32_t wait_count;
const uint8_t *src = (const uint8_t *)buffer;
uint8_t *dest;

tx_noautoflush = 1;
while (size > 0) {
if (!tx_packet) {
wait_count = 0;
while (1) {
if (!usb_configuration) {
tx_noautoflush = 0;
return -1;
}
if (usb_tx_packet_count(CDC_TX_ENDPOINT) < TX_PACKET_LIMIT) {
tx_noautoflush = 1;
tx_packet = usb_malloc();
if (tx_packet) break;
tx_noautoflush = 0;
}
if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {
transmit_previous_timeout = 1;
return -1;
}
yield();
}
}
transmit_previous_timeout = 0;
len = CDC_TX_SIZE - tx_packet->index;
if (len > size) len = size;
dest = tx_packet->buf + tx_packet->index;
tx_packet->index += len;
size -= len;
while (len-- > 0) *dest++ = *src++;
if (tx_packet->index >= CDC_TX_SIZE) {
tx_packet->len = CDC_TX_SIZE;
usb_tx(CDC_TX_ENDPOINT, tx_packet);
tx_packet = NULL;
}
usb_cdc_transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
}
tx_noautoflush = 0;
return ret;
}

int usb_serial_write_buffer_free(void)
{
uint32_t len;

tx_noautoflush = 1;
if (!tx_packet) {
if (!usb_configuration ||
usb_tx_packet_count(CDC_TX_ENDPOINT) >= TX_PACKET_LIMIT ||
(tx_packet = usb_malloc()) == NULL) {
tx_noautoflush = 0;
return 0;
}
}
len = CDC_TX_SIZE - tx_packet->index;
// TODO: Perhaps we need "usb_cdc_transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT"
// added here, so the SOF interrupt can't take away the available buffer
// space we just promised the user could write without blocking?
// But does this come with other performance downsides? Could it lead to
// buffer data never actually transmitting in some usage cases? More
// investigation is needed.
// https://github.com/PaulStoffregen/cores/issues/10#issuecomment-61514955
tx_noautoflush = 0;
return len;
}

void usb_serial_flush_output(void)
{
if (!usb_configuration) return;
tx_noautoflush = 1;
if (tx_packet) {
usb_cdc_transmit_flush_timer = 0;
tx_packet->len = tx_packet->index;
usb_tx(CDC_TX_ENDPOINT, tx_packet);
tx_packet = NULL;
} else {
usb_packet_t *tx = usb_malloc();
if (tx) {
usb_cdc_transmit_flush_timer = 0;
usb_tx(CDC_TX_ENDPOINT, tx);
} else {
usb_cdc_transmit_flush_timer = 1;
}
}
tx_noautoflush = 0;
}

void usb_serial_flush_callback(void)
{
if (tx_noautoflush) return;
if (tx_packet) {
tx_packet->len = tx_packet->index;
usb_tx(CDC_TX_ENDPOINT, tx_packet);
tx_packet = NULL;
} else {
usb_packet_t *tx = usb_malloc();
if (tx) {
usb_tx(CDC_TX_ENDPOINT, tx);
} else {
usb_cdc_transmit_flush_timer = 1;
}
}
}



#if F_CPU >= 20000000
#include "usb_serial_port.h"

struct usb_serial_port usb_serial_instance = {
.cdc_rx_endpoint = CDC_RX_ENDPOINT,
.cdc_tx_endpoint = CDC_TX_ENDPOINT,
.cdc_tx_size = CDC_TX_SIZE,
};
#endif // F_CPU
#endif // CDC_STATUS_INTERFACE && CDC_DATA_INTERFACE

+ 7
- 131
teensy3/usb_serial.h View File

@@ -34,139 +34,15 @@
#include "usb_desc.h"

#if (defined(CDC_STATUS_INTERFACE) && defined(CDC_DATA_INTERFACE)) || defined(USB_DISABLED)
#define USB_SERIAL_SUFFIX /* none */
#define SERIAL_CLASS_SUFFIX /* none */

#include <inttypes.h>

#if F_CPU >= 20000000 && !defined(USB_DISABLED)

// C language implementation
#ifdef __cplusplus
extern "C" {
#endif
int usb_serial_getchar(void);
int usb_serial_peekchar(void);
int usb_serial_available(void);
int usb_serial_read(void *buffer, uint32_t size);
void usb_serial_flush_input(void);
int usb_serial_putchar(uint8_t c);
int usb_serial_write(const void *buffer, uint32_t size);
int usb_serial_write_buffer_free(void);
void usb_serial_flush_output(void);
extern uint32_t usb_cdc_line_coding[2];
extern volatile uint32_t usb_cdc_line_rtsdtr_millis;
extern volatile uint32_t systick_millis_count;
extern volatile uint8_t usb_cdc_line_rtsdtr;
extern volatile uint8_t usb_cdc_transmit_flush_timer;
extern volatile uint8_t usb_configuration;
#ifdef __cplusplus
}
#endif

#define USB_SERIAL_DTR 0x01
#define USB_SERIAL_RTS 0x02

// C++ interface
#ifdef __cplusplus
#include "Stream.h"
class usb_serial_class : public Stream
{
public:
constexpr usb_serial_class() {}
void begin(long) {
//uint32_t millis_begin = systick_millis_count;
//disabled for now - causes more trouble than it solves?
//while (!(*this)) {
// wait up to 2.5 seconds for Arduino Serial Monitor
// Yes, this is a long time, but some Windows systems open
// the port very slowly. This wait allows programs for
// Arduino Uno to "just work" (without forcing a reboot when
// the port is opened), and when no PC is connected the user's
// sketch still gets to run normally after this wait time.
//if ((uint32_t)(systick_millis_count - millis_begin) > 2500) break;
//}
}
void end() { /* TODO: flush output and shut down USB port */ };
virtual int available() { return usb_serial_available(); }
virtual int read() { return usb_serial_getchar(); }
virtual int peek() { return usb_serial_peekchar(); }
virtual void flush() { usb_serial_flush_output(); } // TODO: actually wait for data to leave USB...
virtual void clear(void) { usb_serial_flush_input(); }
virtual size_t write(uint8_t c) { return usb_serial_putchar(c); }
virtual size_t write(const uint8_t *buffer, size_t size) { return usb_serial_write(buffer, size); }
size_t write(unsigned long n) { return write((uint8_t)n); }
size_t write(long n) { return write((uint8_t)n); }
size_t write(unsigned int n) { return write((uint8_t)n); }
size_t write(int n) { return write((uint8_t)n); }
virtual int availableForWrite() { return usb_serial_write_buffer_free(); }
using Print::write;
void send_now(void) { usb_serial_flush_output(); }
uint32_t baud(void) { return usb_cdc_line_coding[0]; }
uint8_t stopbits(void) { uint8_t b = usb_cdc_line_coding[1]; if (!b) b = 1; return b; }
uint8_t paritytype(void) { return usb_cdc_line_coding[1] >> 8; } // 0=none, 1=odd, 2=even
uint8_t numbits(void) { return usb_cdc_line_coding[1] >> 16; }
uint8_t dtr(void) { return (usb_cdc_line_rtsdtr & USB_SERIAL_DTR) ? 1 : 0; }
uint8_t rts(void) { return (usb_cdc_line_rtsdtr & USB_SERIAL_RTS) ? 1 : 0; }
operator bool() { return usb_configuration && (usb_cdc_line_rtsdtr & USB_SERIAL_DTR) &&
((uint32_t)(systick_millis_count - usb_cdc_line_rtsdtr_millis) >= 15);
}
size_t readBytes(char *buffer, size_t length) {
size_t count=0;
unsigned long startMillis = millis();
do {
count += usb_serial_read(buffer + count, length - count);
if (count >= length) return count;
} while(millis() - startMillis < _timeout);
setReadError();
return count;
}

};
extern usb_serial_class Serial;
extern void serialEvent(void);
#endif // __cplusplus


#else // F_CPU < 20000000

// Allow Arduino programs using Serial to compile, but Serial will do nothing.
#ifdef __cplusplus
#include "Stream.h"
class usb_serial_class : public Stream
{
public:
constexpr usb_serial_class() {}
void begin(long) { };
void end() { };
virtual int available() { return 0; }
virtual int read() { return -1; }
virtual int peek() { return -1; }
virtual void flush() { }
virtual void clear() { }
virtual size_t write(uint8_t c) { return 1; }
virtual size_t write(const uint8_t *buffer, size_t size) { return size; }
size_t write(unsigned long n) { return 1; }
size_t write(long n) { return 1; }
size_t write(unsigned int n) { return 1; }
size_t write(int n) { return 1; }
int availableForWrite() { return 0; }
using Print::write;
void send_now(void) { }
uint32_t baud(void) { return 0; }
uint8_t stopbits(void) { return 1; }
uint8_t paritytype(void) { return 0; }
uint8_t numbits(void) { return 8; }
uint8_t dtr(void) { return 1; }
uint8_t rts(void) { return 1; }
operator bool() { return true; }
};

extern usb_serial_class Serial;
extern void serialEvent(void);
#endif // __cplusplus


#endif // F_CPU
#include "usb_serial_template.h"

#define usb_cdc_line_coding usb_serial_instance.cdc_line_coding
#define usb_cdc_line_rtsdtr_millis usb_serial_instance.cdc_line_rtsdtr_millis
#define usb_cdc_line_rtsdtr usb_serial_instance.cdc_line_rtsdtr
#define usb_cdc_transmit_flush_timer usb_serial_instance.cdc_transmit_flush_timer
#endif // CDC_STATUS_INTERFACE && CDC_DATA_INTERFACE

#endif // USBserial_h_

+ 46
- 0
teensy3/usb_serial2.c View File

@@ -0,0 +1,46 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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 "usb_dev.h"

// defined by usb_dev.h -> usb_desc.h
#if defined(CDC2_STATUS_INTERFACE) && defined(CDC2_DATA_INTERFACE)

#if F_CPU >= 20000000
#include "usb_serial_port.h"

struct usb_serial_port usb_serial2_instance = {
.cdc_rx_endpoint = CDC2_RX_ENDPOINT,
.cdc_tx_endpoint = CDC2_TX_ENDPOINT,
.cdc_tx_size = CDC2_TX_SIZE,
};
#endif

#endif // CDC2_STATUS_INTERFACE && CDC2_DATA_INTERFACE

+ 48
- 0
teensy3/usb_serial2.h View File

@@ -0,0 +1,48 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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.
*/

#ifndef USBserial2_h_
#define USBserial2_h_

#include "usb_desc.h"

#if defined(CDC2_STATUS_INTERFACE) && defined(CDC2_DATA_INTERFACE)
#define USB_SERIAL_SUFFIX 2
#define SERIAL_CLASS_SUFFIX A

#include "usb_serial_template.h"

#define usb_cdc2_line_coding usb_serial2_instance.cdc_line_coding
#define usb_cdc2_line_rtsdtr_millis usb_serial2_instance.cdc_line_rtsdtr_millis
#define usb_cdc2_line_rtsdtr usb_serial2_instance.cdc_line_rtsdtr
#define usb_cdc2_transmit_flush_timer usb_serial2_instance.cdc_transmit_flush_timer
#endif // CDC_STATUS_INTERFACE && CDC_DATA_INTERFACE

#endif // USBserial2_h_

+ 46
- 0
teensy3/usb_serial3.c View File

@@ -0,0 +1,46 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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 "usb_dev.h"

// defined by usb_dev.h -> usb_desc.h
#if defined(CDC3_STATUS_INTERFACE) && defined(CDC3_DATA_INTERFACE)

#if F_CPU >= 20000000
#include "usb_serial_port.h"

struct usb_serial_port usb_serial3_instance = {
.cdc_rx_endpoint = CDC3_RX_ENDPOINT,
.cdc_tx_endpoint = CDC3_TX_ENDPOINT,
.cdc_tx_size = CDC3_TX_SIZE,
};
#endif

#endif // CDC3_STATUS_INTERFACE && CDC3_DATA_INTERFACE

+ 48
- 0
teensy3/usb_serial3.h View File

@@ -0,0 +1,48 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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.
*/

#ifndef USBserial3_h_
#define USBserial3_h_

#include "usb_desc.h"

#if defined(CDC3_STATUS_INTERFACE) && defined(CDC3_DATA_INTERFACE)
#define USB_SERIAL_SUFFIX 3
#define SERIAL_CLASS_SUFFIX B

#include "usb_serial_template.h"

#define usb_cdc3_line_coding usb_serial3_instance.cdc_line_coding
#define usb_cdc3_line_rtsdtr_millis usb_serial3_instance.cdc_line_rtsdtr_millis
#define usb_cdc3_line_rtsdtr usb_serial3_instance.cdc_line_rtsdtr
#define usb_cdc3_transmit_flush_timer usb_serial3_instance.cdc_transmit_flush_timer
#endif // CDC_STATUS_INTERFACE && CDC_DATA_INTERFACE

#endif // USBserial3_h_

+ 300
- 0
teensy3/usb_serial_port.c View File

@@ -0,0 +1,300 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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 "usb_dev.h"
#include "usb_serial_port.h"
#include "core_pins.h" // for yield()
//#include "HardwareSerial.h"
#include <string.h> // for memcpy()

// defined by usb_dev.h -> usb_desc.h
#if defined(CDC_STATUS_INTERFACE) && defined(CDC_DATA_INTERFACE)
#if F_CPU >= 20000000

#define TRANSMIT_FLUSH_TIMEOUT 5 /* in milliseconds */

// get the next character, or -1 if nothing received
int __usb_serial_getchar(struct usb_serial_port *port)
{
unsigned int i;
int c;

if (!port->rx_packet) {
if (!usb_configuration) return -1;
port->rx_packet = usb_rx(port->cdc_rx_endpoint);
if (!port->rx_packet) return -1;
}
i = port->rx_packet->index;
c = port->rx_packet->buf[i++];
if (i >= port->rx_packet->len) {
usb_free(port->rx_packet);
port->rx_packet = NULL;
} else {
port->rx_packet->index = i;
}
return c;
}

// peek at the next character, or -1 if nothing received
int __usb_serial_peekchar(struct usb_serial_port *port)
{
if (!port->rx_packet) {
if (!usb_configuration) return -1;
port->rx_packet = usb_rx(port->cdc_rx_endpoint);
if (!port->rx_packet) return -1;
}
if (!port->rx_packet) return -1;
return port->rx_packet->buf[port->rx_packet->index];
}

// number of bytes available in the receive buffer
int __usb_serial_available(struct usb_serial_port *port)
{
int count;
count = usb_rx_byte_count(port->cdc_rx_endpoint);
if (port->rx_packet)
count += port->rx_packet->len - port->rx_packet->index;
return count;
}

// read a block of bytes to a buffer
int __usb_serial_read(struct usb_serial_port *port, void *buffer,
uint32_t size)
{
uint8_t *p = (uint8_t *)buffer;
uint32_t qty, count=0;

while (size) {
if (!usb_configuration) break;
if (!port->rx_packet) {
rx:
port->rx_packet = usb_rx(port->cdc_rx_endpoint);
if (!port->rx_packet) break;
if (port->rx_packet->len == 0) {
usb_free(port->rx_packet);
goto rx;
}
}
qty = port->rx_packet->len - port->rx_packet->index;
if (qty > size) qty = size;
memcpy(p, port->rx_packet->buf + port->rx_packet->index, qty);
p += qty;
count += qty;
size -= qty;
port->rx_packet->index += qty;
if (port->rx_packet->index >= port->rx_packet->len) {
usb_free(port->rx_packet);
port->rx_packet = NULL;
}
}
return count;
}

// discard any buffered input
void __usb_serial_flush_input(struct usb_serial_port *port)
{
usb_packet_t *rx;

if (!usb_configuration) return;
if (port->rx_packet) {
usb_free(port->rx_packet);
port->rx_packet = NULL;
}
while (1) {
rx = usb_rx(port->cdc_rx_endpoint);
if (!rx) break;
usb_free(rx);
}
}

// Maximum number of transmit packets to queue so we don't starve other endpoints for memory
#define TX_PACKET_LIMIT 8

// When the PC isn't listening, how long do we wait before discarding data? If this is
// too short, we risk losing data during the stalls that are common with ordinary desktop
// software. If it's too long, we stall the user's program when no software is running.
#define TX_TIMEOUT_MSEC 70
#if F_CPU == 256000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1706)
#elif F_CPU == 240000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1600)
#elif F_CPU == 216000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1440)
#elif F_CPU == 192000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1280)
#elif F_CPU == 180000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1200)
#elif F_CPU == 168000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 1100)
#elif F_CPU == 144000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 932)
#elif F_CPU == 120000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 764)
#elif F_CPU == 96000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 596)
#elif F_CPU == 72000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 512)
#elif F_CPU == 48000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 428)
#elif F_CPU == 24000000
#define TX_TIMEOUT (TX_TIMEOUT_MSEC * 262)
#endif

// When we've suffered the transmit timeout, don't wait again until the computer
// begins accepting data. If no software is running to receive, we'll just discard
// data as rapidly as Serial.print() can generate it, until there's something to
// actually receive it.
static uint8_t transmit_previous_timeout=0;


// transmit a character. 0 returned on success, -1 on error
int __usb_serial_putchar(struct usb_serial_port *port, uint8_t c)
{
return __usb_serial_write(port, &c, 1);
}


int __usb_serial_write(struct usb_serial_port *port, const void *buffer,
uint32_t size)
{
uint32_t ret = size;
uint32_t len;
uint32_t wait_count;
const uint8_t *src = (const uint8_t *)buffer;
uint8_t *dest;

port->tx_noautoflush = 1;
while (size > 0) {
if (!port->tx_packet) {
wait_count = 0;
while (1) {
if (!usb_configuration) {
port->tx_noautoflush = 0;
return -1;
}
if (usb_tx_packet_count(port->cdc_tx_endpoint) < TX_PACKET_LIMIT) {
port->tx_noautoflush = 1;
port->tx_packet = usb_malloc();
if (port->tx_packet) break;
port->tx_noautoflush = 0;
}
if (++wait_count > TX_TIMEOUT || transmit_previous_timeout) {
transmit_previous_timeout = 1;
return -1;
}
yield();
}
}
transmit_previous_timeout = 0;
len = port->cdc_tx_size - port->tx_packet->index;
if (len > size) len = size;
dest = port->tx_packet->buf + port->tx_packet->index;
port->tx_packet->index += len;
size -= len;
while (len-- > 0) *dest++ = *src++;
if (port->tx_packet->index >= port->cdc_tx_size) {
port->tx_packet->len = port->cdc_tx_size;
usb_tx(port->cdc_tx_endpoint, port->tx_packet);
port->tx_packet = NULL;
}
port->cdc_transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT;
}
port->tx_noautoflush = 0;
return ret;
}

int __usb_serial_write_buffer_free(struct usb_serial_port *port)
{
uint32_t len;

port->tx_noautoflush = 1;
if (!port->tx_packet) {
if (!usb_configuration ||
usb_tx_packet_count(port->cdc_tx_endpoint) >= TX_PACKET_LIMIT ||
(port->tx_packet = usb_malloc()) == NULL) {
port->tx_noautoflush = 0;
return 0;
}
}
len = port->cdc_tx_size - port->tx_packet->index;
// TODO: Perhaps we need "port->cdc_transmit_flush_timer = TRANSMIT_FLUSH_TIMEOUT"
// added here, so the SOF interrupt can't take away the available buffer
// space we just promised the user could write without blocking?
// But does this come with other performance downsides? Could it lead to
// buffer data never actually transmitting in some usage cases? More
// investigation is needed.
// https://github.com/PaulStoffregen/cores/issues/10#issuecomment-61514955
port->tx_noautoflush = 0;
return len;
}

void __usb_serial_flush_output(struct usb_serial_port *port)
{
if (!usb_configuration) return;
port->tx_noautoflush = 1;
if (port->tx_packet) {
port->cdc_transmit_flush_timer = 0;
port->tx_packet->len = port->tx_packet->index;
usb_tx(port->cdc_tx_endpoint, port->tx_packet);
port->tx_packet = NULL;
} else {
usb_packet_t *tx = usb_malloc();
if (tx) {
port->cdc_transmit_flush_timer = 0;
usb_tx(port->cdc_tx_endpoint, tx);
} else {
port->cdc_transmit_flush_timer = 1;
}
}
port->tx_noautoflush = 0;
}

void __usb_serial_flush_callback(struct usb_serial_port *port)
{
if (port->tx_noautoflush) return;
if (port->tx_packet) {
port->tx_packet->len = port->tx_packet->index;
usb_tx(port->cdc_tx_endpoint, port->tx_packet);
port->tx_packet = NULL;
} else {
usb_packet_t *tx = usb_malloc();
if (tx) {
usb_tx(port->cdc_tx_endpoint, tx);
} else {
port->cdc_transmit_flush_timer = 1;
}
}
}




#endif // F_CPU
#endif // CDC_STATUS_INTERFACE && CDC_DATA_INTERFACE

+ 78
- 0
teensy3/usb_serial_port.h View File

@@ -0,0 +1,78 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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.
*/

#ifndef usb_serial_port_h_
#define usb_serial_port_h_

#if F_CPU >= 20000000 && !defined(USB_DISABLED)

// C language implementation
#ifdef __cplusplus
extern "C" {
#endif
struct usb_packet_struct;
struct usb_serial_port {
/* public */
uint32_t cdc_line_coding[2];
volatile uint32_t cdc_line_rtsdtr_millis;
volatile uint8_t cdc_line_rtsdtr;
volatile uint8_t cdc_transmit_flush_timer;

/* private */
struct usb_packet_struct *rx_packet;
struct usb_packet_struct *tx_packet;
volatile uint8_t tx_noautoflush;
const uint8_t cdc_rx_endpoint;
const uint8_t cdc_tx_endpoint;
const uint8_t cdc_tx_size;
};

extern volatile uint32_t systick_millis_count;
extern volatile uint8_t usb_configuration;

int __usb_serial_getchar(struct usb_serial_port *port);
int __usb_serial_peekchar(struct usb_serial_port *port);
int __usb_serial_available(struct usb_serial_port *port);
int __usb_serial_read(struct usb_serial_port *port, void *buffer,
uint32_t size);
void __usb_serial_flush_input(struct usb_serial_port *port);
int __usb_serial_putchar(struct usb_serial_port *port, uint8_t c);
int __usb_serial_write(struct usb_serial_port *port, const void *buffer,
uint32_t size);
int __usb_serial_write_buffer_free(struct usb_serial_port *port);
void __usb_serial_flush_output(struct usb_serial_port *port);
void __usb_serial_flush_callback(struct usb_serial_port *port);
#ifdef __cplusplus
}
#endif

#endif // F_CPU

#endif // usb_serial_port_h_

+ 259
- 0
teensy3/usb_serial_template.h View File

@@ -0,0 +1,259 @@
/* Teensyduino Core Library
* http://www.pjrc.com/teensy/
* Copyright (c) 2017 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:
*
* 1. The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* 2. If the Software is incorporated into a build system that allows
* selection among a list of target devices, then similar target
* devices manufactured by PJRC.COM must be included in the list of
* target devices and selectable in the same manner.
*
* 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 <inttypes.h>
#include <sys/cdefs.h> // for __CONCAT()

#include "usb_serial_port.h"

#define USB_SERIAL_PREFIX __CONCAT(usb_serial, USB_SERIAL_SUFFIX)
#define USB_SERIAL_NAME(func) __CONCAT(USB_SERIAL_PREFIX, _ ## func)
#define usb_serial_available USB_SERIAL_NAME(available)
#define usb_serial_class USB_SERIAL_NAME(class)
#define usb_serial_flush_callback USB_SERIAL_NAME(flush_callback)
#define usb_serial_flush_input USB_SERIAL_NAME(flush_input)
#define usb_serial_flush_output USB_SERIAL_NAME(flush_output)
#define usb_serial_getchar USB_SERIAL_NAME(getchar)
#define usb_serial_instance USB_SERIAL_NAME(instance)
#define usb_serial_peekchar USB_SERIAL_NAME(peekchar)
#define usb_serial_putchar USB_SERIAL_NAME(putchar)
#define usb_serial_read USB_SERIAL_NAME(read)
#define usb_serial_write_buffer_free USB_SERIAL_NAME(write_buffer_free)
#define usb_serial_write USB_SERIAL_NAME(write)

#define Serial __CONCAT(Serial, SERIAL_CLASS_SUFFIX)
#define serialEvent __CONCAT(serialEvent, SERIAL_CLASS_SUFFIX)

#if F_CPU >= 20000000 && !defined(USB_DISABLED)

#include "core_pins.h" // for millis()

// C language implementation
#ifdef __cplusplus
extern "C" {
#endif
extern struct usb_serial_port usb_serial_instance;

static inline int usb_serial_getchar(void)
{
return __usb_serial_getchar(&usb_serial_instance);
}

static inline int usb_serial_peekchar(void)
{
return __usb_serial_peekchar(&usb_serial_instance);
}

static inline int usb_serial_available(void)
{
return __usb_serial_available(&usb_serial_instance);
}

static inline int usb_serial_read(void *buffer, uint32_t size)
{
return __usb_serial_read(&usb_serial_instance, buffer, size);
}

static inline void usb_serial_flush_input(void)
{
__usb_serial_flush_input(&usb_serial_instance);
}

static inline int usb_serial_putchar(uint8_t c)
{
return __usb_serial_putchar(&usb_serial_instance, c);
}

static inline int usb_serial_write(const void *buffer, uint32_t size)
{
return __usb_serial_write(&usb_serial_instance, buffer, size);
}

static inline int usb_serial_write_buffer_free(void)
{
return __usb_serial_write_buffer_free(&usb_serial_instance);
}

static inline void usb_serial_flush_output(void)
{
__usb_serial_flush_output(&usb_serial_instance);
}

static inline void usb_serial_flush_callback(void)
{
__usb_serial_flush_callback(&usb_serial_instance);
}

#ifdef __cplusplus
}
#endif

#define USB_SERIAL_DTR 0x01
#define USB_SERIAL_RTS 0x02

// C++ interface
#ifdef __cplusplus
#include "Stream.h"
class usb_serial_class : public Stream
{
public:
constexpr usb_serial_class() {}
void begin(long) {
//uint32_t millis_begin = systick_millis_count;
//disabled for now - causes more trouble than it solves?
//while (!(*this)) {
// wait up to 2.5 seconds for Arduino Serial Monitor
// Yes, this is a long time, but some Windows systems open
// the port very slowly. This wait allows programs for
// Arduino Uno to "just work" (without forcing a reboot when
// the port is opened), and when no PC is connected the user's
// sketch still gets to run normally after this wait time.
//if ((uint32_t)(systick_millis_count - millis_begin) > 2500) break;
//}
}
void end() { /* TODO: flush output and shut down USB port */ };
virtual int available() { return usb_serial_available(); }
virtual int read() { return usb_serial_getchar(); }
virtual int peek() { return usb_serial_peekchar(); }
virtual void flush() { usb_serial_flush_output(); } // TODO: actually wait for data to leave USB...
virtual void clear(void) { usb_serial_flush_input(); }
virtual size_t write(uint8_t c) { return usb_serial_putchar(c); }
virtual size_t write(const uint8_t *buffer, size_t size) { return usb_serial_write(buffer, size); }
size_t write(unsigned long n) { return write((uint8_t)n); }
size_t write(long n) { return write((uint8_t)n); }
size_t write(unsigned int n) { return write((uint8_t)n); }
size_t write(int n) { return write((uint8_t)n); }
virtual int availableForWrite() { return usb_serial_write_buffer_free(); }
using Print::write;
void send_now(void) { usb_serial_flush_output(); }
uint32_t baud(void) { return usb_serial_instance.cdc_line_coding[0]; }
uint8_t stopbits(void) {
uint8_t b = usb_serial_instance.cdc_line_coding[1];
if (!b) b = 1;
return b;
}
uint8_t paritytype(void) {
// 0=none, 1=odd, 2=even
return usb_serial_instance.cdc_line_coding[1] >> 8;
}
uint8_t numbits(void) {
return usb_serial_instance.cdc_line_coding[1] >> 16;
}
uint8_t dtr(void) {
return (usb_serial_instance.cdc_line_rtsdtr & USB_SERIAL_DTR) ?
1 : 0;
}
uint8_t rts(void) {
return (usb_serial_instance.cdc_line_rtsdtr & USB_SERIAL_RTS) ?
1 : 0;
}
operator bool() {
return usb_configuration &&
(usb_serial_instance.cdc_line_rtsdtr & USB_SERIAL_DTR) &&
((uint32_t)(systick_millis_count - usb_serial_instance.cdc_line_rtsdtr_millis) >= 15);
}
size_t readBytes(char *buffer, size_t length) {
size_t count=0;
unsigned long startMillis = millis();
do {
count += usb_serial_read(buffer + count, length - count);
if (count >= length) return count;
} while(millis() - startMillis < _timeout);
setReadError();
return count;
}

};
extern usb_serial_class Serial;
extern void serialEvent(void);
#endif // __cplusplus


#else // F_CPU < 20000000

// Allow Arduino programs using Serial to compile, but Serial will do nothing.
#ifdef __cplusplus
#include "Stream.h"
class usb_serial_class : public Stream
{
public:
constexpr usb_serial_class() {}
void begin(long) { };
void end() { };
virtual int available() { return 0; }
virtual int read() { return -1; }
virtual int peek() { return -1; }
virtual void flush() { }
virtual void clear() { }
virtual size_t write(uint8_t c) { return 1; }
virtual size_t write(const uint8_t *buffer, size_t size) { return size; }
size_t write(unsigned long n) { return 1; }
size_t write(long n) { return 1; }
size_t write(unsigned int n) { return 1; }
size_t write(int n) { return 1; }
int availableForWrite() { return 0; }
using Print::write;
void send_now(void) { }
uint32_t baud(void) { return 0; }
uint8_t stopbits(void) { return 1; }
uint8_t paritytype(void) { return 0; }
uint8_t numbits(void) { return 8; }
uint8_t dtr(void) { return 1; }
uint8_t rts(void) { return 1; }
operator bool() { return true; }
};

extern usb_serial_class Serial;
extern void serialEvent(void);
#endif // __cplusplus


#endif // F_CPU

#undef usb_serial_available
#undef usb_serial_class
#undef usb_serial_flush_callback
#undef usb_serial_flush_input
#undef usb_serial_flush_output
#undef usb_serial_getchar
#undef usb_serial_instance
#undef usb_serial_peekchar
#undef usb_serial_putchar
#undef usb_serial_read
#undef usb_serial_write_buffer_free
#undef usb_serial_write

#undef Serial
#undef serialEvent

#undef USB_SERIAL_SUFFIX
#undef USB_SERIAL_PREFIX
#undef USB_SERIAL_NAME
#undef SERIAL_CLASS_SUFFIX

+ 48
- 0
teensy3/usb_undef.h View File

@@ -110,6 +110,54 @@
#ifdef CDC_TX_SIZE
#undef CDC_TX_SIZE
#endif
#ifdef CDC2_STATUS_INTERFACE
#undef CDC2_STATUS_INTERFACE
#endif
#ifdef CDC2_DATA_INTERFACE
#undef CDC2_DATA_INTERFACE
#endif
#ifdef CDC2_ACM_ENDPOINT
#undef CDC2_ACM_ENDPOINT
#endif
#ifdef CDC2_RX_ENDPOINT
#undef CDC2_RX_ENDPOINT
#endif
#ifdef CDC2_TX_ENDPOINT
#undef CDC2_TX_ENDPOINT
#endif
#ifdef CDC2_ACM_SIZE
#undef CDC2_ACM_SIZE
#endif
#ifdef CDC2_RX_SIZE
#undef CDC2_RX_SIZE
#endif
#ifdef CDC2_TX_SIZE
#undef CDC2_TX_SIZE
#endif
#ifdef CDC3_STATUS_INTERFACE
#undef CDC3_STATUS_INTERFACE
#endif
#ifdef CDC3_DATA_INTERFACE
#undef CDC3_DATA_INTERFACE
#endif
#ifdef CDC3_ACM_ENDPOINT
#undef CDC3_ACM_ENDPOINT
#endif
#ifdef CDC3_RX_ENDPOINT
#undef CDC3_RX_ENDPOINT
#endif
#ifdef CDC3_TX_ENDPOINT
#undef CDC3_TX_ENDPOINT
#endif
#ifdef CDC3_ACM_SIZE
#undef CDC3_ACM_SIZE
#endif
#ifdef CDC3_RX_SIZE
#undef CDC3_RX_SIZE
#endif
#ifdef CDC3_TX_SIZE
#undef CDC3_TX_SIZE
#endif
#ifdef SEREMU_INTERFACE
#undef SEREMU_INTERFACE
#endif

+ 6
- 0
teensy3/yield.cpp View File

@@ -39,6 +39,12 @@ void yield(void)
if (running) return; // TODO: does this need to be atomic?
running = 1;
if (Serial.available()) serialEvent();
#if defined(USB_DUAL_SERIAL) || defined(USB_TRIPLE_SERIAL)
if (SerialA.available()) serialEventA();
#endif
#ifdef USB_TRIPLE_SERIAL
if (SerialB.available()) serialEventB();
#endif
if (Serial1.available()) serialEvent1();
if (Serial2.available()) serialEvent2();
if (Serial3.available()) serialEvent3();

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