/* Send the next transaction containing data from the medium to the host. */
static int8_t send_next_data_transaction(struct msc_application_data *msc)
{
const uint8_t *cur = msc->tx_buf;
const uint16_t len = msc->tx_len_remaining;
if (!usb_is_configured() || usb_in_endpoint_busy(msc->in_endpoint))
return -1;
if (len > 0) {
/* There is data to send; send one packet worth. */
uint8_t *buf;
uint16_t to_copy;
buf = usb_get_in_buffer(msc->in_endpoint);
to_copy = MIN(len, msc->in_endpoint_size);
memcpy(buf, cur, to_copy);
usb_send_in_buffer(msc->in_endpoint, to_copy);
msc->transferred_bytes += to_copy;
msc->tx_buf += to_copy;
msc->tx_len_remaining -= to_copy;
}
else {
/* Transfer of block has completed */
msc->operation_complete_callback(msc, true);
msc->operation_complete_callback = NULL;
msc->tx_buf = NULL;
}
return 0;
}
int main(void)
{
OSCCONbits.IRCF = 0b1111; // 0b1111 = 16MHz HFINTOSC postscaler
ANSELA = 0x00; // digital I/O on PORTA
ANSELB = 0x00; // digital I/O on PORTB
ANSELC = 0x00; // digital I/O on PORTC
APFCON = 0x00; // a little bit of voodoo
MODE_SW_TRIS = PIN_OUTPUT;
MODE_SW = POTENTIOSTATIC; // initialize mode to potentiostatic
CELL_ON_TRIS = PIN_OUTPUT;
CELL_ON_PIN = CELL_OFF; // initialize cell to off position
TRISC = 0x00; // all outputs on PORTC
LATC = RANGE1; // initialize range to range 1
// Enable Active clock-tuning from the USB
ACTCONbits.ACTSRC = 1; // 1=USB
ACTCONbits.ACTEN = 1;
// Configure interrupts
INTCONbits.PEIE = 1;
INTCONbits.GIE = 1;
// Initialize USB
usb_init();
while (1)
{
if (usb_is_configured() && usb_out_endpoint_has_data(1)) // wait for data received from host
{
if (!usb_in_endpoint_halted(1))
{
while (usb_in_endpoint_busy(1)) // wait for EP1 IN to become free
;
received_data_length = usb_get_out_buffer(1, &received_data);
transmit_data = usb_get_in_buffer(1);
interpret_command(); // this reads received_data and sets transmit_data and transmit_data_length
usb_send_in_buffer(1, transmit_data_length); // send the data back
}
usb_arm_out_endpoint(1);
}
}
return 0;
}
USBSerial::operator bool() {
return usb_is_connected(USBLIB) && usb_is_configured(USBLIB) && usb_cdcacm_get_dtr();
}
int main(void) {
hardware_init();
luke_init();
#ifdef MULTI_CLASS_DEVICE
hid_set_interface_list(hid_interfaces, sizeof (hid_interfaces));
#endif
usb_init();
uint8_t regAddr = 0;
while (1) {
if (usb_is_configured() && usb_out_endpoint_has_data(1)) {
// uint8_t len;
const unsigned char *RxDataBuffer;
unsigned char *TxDataBuffer = usb_get_in_buffer(1);
/* Data received from host */
if (!usb_in_endpoint_halted(1)) {
/* Wait for EP 1 IN to become free then send. This of
* course only works using interrupts. */
while (usb_in_endpoint_busy(1))
;
usb_get_out_buffer(1, &RxDataBuffer);
uint8_t pcktVer = RxDataBuffer[0] & 0xC0;
uint8_t pcktLen = RxDataBuffer[0] & 0x2F;
if (pcktVer == PROTOCOL_VERSION && pcktLen > 1) {
uint8_t opcode = RxDataBuffer[1];
TxDataBuffer[1] = opcode; // echo back operation code
ATTID id = (RxDataBuffer[2] << 8) + RxDataBuffer[3];
uint8_t len;
switch (opcode) {
case OP_ATT_VALUE_GET:
TxDataBuffer[2] = RC_OK; // Return OK code
TxDataBuffer[0] = PROTOCOL_VERSION;
switch (id) {
case ATT_PRODUCT_NAME:
len = strlen(PRODUCT_NAME) + 1; // +1 for NULL
TxDataBuffer[0] |= len + 3; // packet length
memcpy(&TxDataBuffer[3], PRODUCT_NAME, len);
break;
case ATT_PRODUCT_REVISION:
TxDataBuffer[0] |= 2 + 3; // packet length
TxDataBuffer[3] = '0' + PORTCbits.RC2;
TxDataBuffer[4] = NULL;
break;
case ATT_PRODUCT_SERIAL:
/* TxDataBuffer[0] |= NVM_PRODUCT_SERIAL_SIZE + 3; // packet length
for (uint8_t i=0; i<NVM_PRODUCT_SERIAL_SIZE; i++) {
// Please note that 1 word of HEF is 14bits but lower 8bits is high-endurance
TxDataBuffer[i+3] = (uint8_t) FLASH_ReadWord(NVM_PRODUCT_SERIAL_ADDR + i);
} */
TxDataBuffer[0] |= NVM_PRODUCT_SERIAL_SIZE + 3; // packet length
memcpy(&TxDataBuffer[3], NVM_PRODUCT_SERIAL_ADDR, NVM_PRODUCT_SERIAL_SIZE);
break;
case ATT_FIRM_VERSION:
len = strlen(FIRM_VERSION) + 1; // +1 for NULL
TxDataBuffer[0] |= len + 3; // packet length
memcpy(&TxDataBuffer[3], FIRM_VERSION, len);
break;
case ATT_I2C0_RW_2BYTE:
TxDataBuffer[0] |= 2 + 3; // packet length
uint16_t dat = i2c_reg_read(regAddr);
TxDataBuffer[4] = dat >> 8;
TxDataBuffer[3] = dat;
break;
case ATT_VOLTAGE:
TxDataBuffer[0] |= 4 + 3; // packet length
float volt = get_voltage();
TxDataBuffer[3] = 0x00;
memcpy(&TxDataBuffer[4], &volt, 3);
break;
case ATT_CURRENT:
TxDataBuffer[0] |= 4 + 3; // packet length
float curr = get_current();
TxDataBuffer[3] = 0x00;
memcpy(&TxDataBuffer[4], &curr, 3);
break;
default:
TxDataBuffer[0] |= 3; // packet length
TxDataBuffer[2] = RC_FAIL; // Return error code
break;
} // end of switch (id)
break;
case OP_ATT_VALUE_SET:
TxDataBuffer[0] = PROTOCOL_VERSION | 3; // packet length
TxDataBuffer[2] = RC_OK; // Return OK code
switch (id) {
case ATT_I2C0_REG_ADDR:
regAddr = RxDataBuffer[4];
break;
case ATT_I2C0_RW_2BYTE:
i2c_reg_write(regAddr, RxDataBuffer[5], RxDataBuffer[4]);
break;
default:
TxDataBuffer[2] = RC_FAIL; // Return error code
break;
} // end of switch (id)
break;
default:
TxDataBuffer[0] = PROTOCOL_VERSION | 3; // packet length
TxDataBuffer[2] = RC_FAIL; // Return error code
break;
} // switch (opcode)
// Send response
memcpy(usb_get_in_buffer(1), TxDataBuffer, EP_1_IN_LEN);
usb_send_in_buffer(1, EP_1_IN_LEN);
} // end of if (pcktVer == PROTOCOL_VERSION && pcktLen > 1)
}
usb_arm_out_endpoint(1);
}
#ifndef USB_USE_INTERRUPTS
usb_service();
#endif
}
int main(void)
{
#if defined(__PIC24FJ64GB002__) || defined(__PIC24FJ256DA206__)
unsigned int pll_startup_counter = 600;
CLKDIVbits.PLLEN = 1;
while(pll_startup_counter--);
#elif _18F46J50
unsigned int pll_startup = 600;
OSCTUNEbits.PLLEN = 1;
while (pll_startup--)
;
#elif _16F1459 || _16F1454
OSCCONbits.IRCF = 0b1111; /* 0b1111 = 16MHz HFINTOSC postscalar */
/* Enable Active clock-tuning from the USB */
ACTCONbits.ACTSRC = 1; /* 1=USB */
ACTCONbits.ACTEN = 1;
#elif __32MX460F512L__
SYSTEMConfigPerformance(80000000);
#endif
/* Configure interrupts, per architecture */
#ifdef USB_USE_INTERRUPTS
#if defined (_PIC18) || defined(_PIC14E)
INTCONbits.PEIE = 1;
INTCONbits.GIE = 1;
#elif __PIC32MX__
INTCONbits.MVEC = 1; /* Multi-vector interrupts */
IPC11bits.USBIP = 4; /* Interrupt priority, must set to != 0. */
__asm volatile("ei");
#endif
#endif
#ifdef MULTI_CLASS_DEVICE
hid_set_interface_list(hid_interfaces, sizeof(hid_interfaces));
#endif
usb_init();
/* Setup mouse movement. This implementation sends back data for every
* IN packet, but sends no movement for all but every delay-th frame.
* Adjusting delay will slow down or speed up the movement, which is
* also dependent upon the rate at which the host sends IN packets,
* which varies between implementations.
*
* In real life, you wouldn't want to send back data that hadn't
* changed, but since there's no real hardware to poll, and since this
* example is about showing the HID class, and not about creative ways
* to do timing, we send back data every frame. The interested reader
* may want to modify it to use the start-of-frame callback for
* timing.
*/
uint8_t x_delay = 14;
uint8_t x_count = 100;
int8_t x_direc = 1;
uint8_t y_delay = 14;
uint8_t y_count = 25;
int8_t y_direc = 1;
while (1) {
if (usb_is_configured() &&
!usb_in_endpoint_halted(1) &&
!usb_in_endpoint_busy(1)) {
/* Interface 1: Move mouse Left and Right. This
* interface only has an X axis. */
unsigned char *buf = usb_get_in_buffer(1);
buf[0] = 0x0;
buf[1] = (--x_delay)? 0: x_direc;
buf[2] = 0; /* Don't move Y */
usb_send_in_buffer(1, 3);
if (x_delay == 0) {
if (--x_count == 0) {
x_count = 100;
x_direc *= -1;
}
x_delay = 14;
}
}
if (usb_is_configured() &&
!usb_in_endpoint_halted(2) &&
!usb_in_endpoint_busy(2)) {
/* Interface 2: Move mouse up and Down. This
* interface only has a Y axis. */
unsigned char *buf = usb_get_in_buffer(2);
buf[0] = 0x0;
buf[1] = 0; /* Don't move X */
buf[2] = (--y_delay)? 0: y_direc;
buf[3] = 0; /* Don't move Z */
usb_send_in_buffer(2, 4);
if (y_delay == 0) {
if (--y_count == 0) {
y_count = 25;
y_direc *= -1;
}
y_delay = 14;
}
}
#ifndef USB_USE_INTERRUPTS
usb_service();
#endif
}
return 0;
}
int main(void)
{
hardware_init();
#ifdef MULTI_CLASS_DEVICE
hid_set_interface_list(hid_interfaces, sizeof(hid_interfaces));
#endif
usb_init();
/* Setup mouse movement. This implementation sends back data for every
* IN packet, but sends no movement for all but every delay-th frame.
* Adjusting delay will slow down or speed up the movement, which is
* also dependent upon the rate at which the host sends IN packets,
* which varies between implementations.
*
* In real life, you wouldn't want to send back data that hadn't
* changed, but since there's no real hardware to poll, and since this
* example is about showing the HID class, and not about creative ways
* to do timing, we send back data every frame. The interested reader
* may want to modify it to use the start-of-frame callback for
* timing.
*/
uint8_t x_delay = 14;
uint8_t x_count = 100;
int8_t x_direc = 1;
uint8_t y_delay = 14;
uint8_t y_count = 25;
int8_t y_direc = 1;
while (1) {
if (usb_is_configured() &&
!usb_in_endpoint_halted(1) &&
!usb_in_endpoint_busy(1)) {
/* Interface 1: Move mouse Left and Right. This
* interface only has an X axis. */
unsigned char *buf = usb_get_in_buffer(1);
buf[0] = 0x0;
buf[1] = (--x_delay)? 0: x_direc;
buf[2] = 0; /* Don't move Y */
usb_send_in_buffer(1, 3);
if (x_delay == 0) {
if (--x_count == 0) {
x_count = 100;
x_direc *= -1;
}
x_delay = 14;
}
}
if (usb_is_configured() &&
!usb_in_endpoint_halted(2) &&
!usb_in_endpoint_busy(2)) {
/* Interface 2: Move mouse up and Down. This
* interface only has a Y axis. */
unsigned char *buf = usb_get_in_buffer(2);
buf[0] = 0x0;
buf[1] = 0; /* Don't move X */
buf[2] = (--y_delay)? 0: y_direc;
buf[3] = 0; /* Don't move Z */
usb_send_in_buffer(2, 4);
if (y_delay == 0) {
if (--y_count == 0) {
y_count = 25;
y_direc *= -1;
}
y_delay = 14;
}
}
#ifndef USB_USE_INTERRUPTS
usb_service();
#endif
}
return 0;
}
int main(void)
{
hardware_init();
#ifdef MULTI_CLASS_DEVICE
cdc_set_interface_list(cdc_interfaces, sizeof(cdc_interfaces));
#endif
usb_init();
uint8_t char_to_send = 'A';
bool send = true;
bool loopback = false;
while (1) {
/* Send data to the PC */
if (usb_is_configured() &&
!usb_in_endpoint_halted(2) &&
!usb_in_endpoint_busy(2) && send) {
int i;
unsigned char *buf = usb_get_in_buffer(2);
for (i = 0; i < 16; i++) {
buf[i] = char_to_send++;
if (char_to_send > 'Z')
char_to_send = 'A';
}
buf[i++] = '\r';
buf[i++] = '\n';
usb_send_in_buffer(2, i);
}
/* Handle data received from the host */
if (usb_is_configured() &&
!usb_out_endpoint_halted(2) &&
usb_out_endpoint_has_data(2)) {
const unsigned char *out_buf;
size_t out_buf_len;
int i;
/* Check for an empty transaction. */
out_buf_len = usb_get_out_buffer(2, &out_buf);
if (out_buf_len <= 0)
goto empty;
if (send) {
/* Stop sendng if a key was hit. */
send = false;
send_string_sync(2, "Data send off ('h' for help)\r\n");
}
else if (loopback) {
/* Loop data back to the PC */
/* Wait until the IN endpoint can accept it */
while (usb_in_endpoint_busy(2))
;
/* Copy contents of OUT buffer to IN buffer
* and send back to host. */
memcpy(usb_get_in_buffer(2), out_buf, out_buf_len);
usb_send_in_buffer(2, out_buf_len);
/* Send a zero-length packet if the transaction
* length was the same as the endpoint
* length. This is for demo purposes. In real
* life, you only need to do this if the data
* you're transferring ends on a multiple of
* the endpoint length. */
if (out_buf_len == EP_2_LEN) {
/* Wait until the IN endpoint can accept it */
while (usb_in_endpoint_busy(2))
;
usb_send_in_buffer(2, 0);
}
/* Scan for ~ character to end loopback mode */
for (i = 0; i < out_buf_len; i++) {
if (out_buf[i] == '~') {
loopback = false;
send_string_sync(2, "\r\nLoopback off ('h' for help)\r\n");
break;
}
}
}
else {
/* Scan for commands if not in loopback or
* send mode.
*
* This is a hack. One should really scan the
* entire string. In this case, since this
* is a demo, assume that the user is using
* a terminal program and typing the input,
* all but ensuring the data will come in
* single-character transactions. */
if (out_buf[0] == 'h' || out_buf[0] == '?') {
/* Show help.
* Make sure to not try to send more
* than 63 bytes of data in one
* transaction */
send_string_sync(2,
"\r\nHelp:\r\n"
"\ts: send data\r\n"
"\tl: loopback\r\n");
send_string_sync(2,
"\tn: send notification\r\n"
"\th: help\r\n");
}
else if (out_buf[0] == 's')
send = true;
else if (out_buf[0] == 'l') {
loopback = true;
send_string_sync(2, "loopback enabled; press ~ to disable\r\n");
}
else if (out_buf[0] == 'n') {
/* Send a Notification on Endpoint 1 */
struct cdc_serial_state_notification *n =
(struct cdc_serial_state_notification *)
usb_get_in_buffer(1);
n->header.REQUEST.bmRequestType = 0xa1;
n->header.bNotification = CDC_SERIAL_STATE;
n->header.wValue = 0;
n->header.wIndex = 1; /* Interface */
n->header.wLength = 2;
n->data.serial_state = 0; /* Zero the whole bit mask */
n->data.bits.bRxCarrier = 1;
n->data.bits.bTxCarrier = 1;
n->data.bits.bBreak = 0;
n->data.bits.bRingSignal = 0;
n->data.bits.bFraming = 0;
n->data.bits.bParity = 0;
n->data.bits.bOverrun = 0;
/* Wait for the endpoint to be free */
while (usb_in_endpoint_busy(1))
;
/* Send to to host */
usb_send_in_buffer(1, sizeof(*n));
send_string_sync(2, "Notification Sent\r\n");
}
}
empty:
usb_arm_out_endpoint(2);
}
#ifndef USB_USE_INTERRUPTS
usb_service();
#endif
}
return 0;
}
int main(void)
{
#if defined(__PIC24FJ64GB002__) || defined(__PIC24FJ256DA206__)
unsigned int pll_startup_counter = 600;
CLKDIVbits.PLLEN = 1;
while(pll_startup_counter--);
#elif _18F46J50
unsigned int pll_startup = 600;
OSCTUNEbits.PLLEN = 1;
while (pll_startup--)
;
#elif _16F1459
OSCCONbits.IRCF = 0b1111; /* 0b1111 = 16MHz HFINTOSC postscalar */
/* Enable Active clock-tuning from the USB */
ACTCONbits.ACTSRC = 1; /* 1=USB */
ACTCONbits.ACTEN = 1;
#elif __32MX460F512L__
SYSTEMConfigPerformance(80000000);
#endif
/* Configure interrupts, per architecture */
#ifdef USB_USE_INTERRUPTS
#if defined (_PIC18) || defined(_PIC14E)
INTCONbits.PEIE = 1;
INTCONbits.GIE = 1;
#elif __PIC32MX__
INTCONbits.MVEC = 1; /* Multi-vector interrupts */
IPC11bits.USBIP = 4; /* Interrupt priority, must set to != 0. */
__asm volatile("ei");
#endif
#endif
usb_init();
unsigned char *buf = usb_get_in_buffer(1);
memset(buf, 0xa0, EP_1_IN_LEN);
while (1) {
if (usb_is_configured() && usb_out_endpoint_has_data(1)) {
uint8_t len;
const unsigned char *data;
/* Data received from host */
if (!usb_in_endpoint_halted(1)) {
/* Wait for EP 1 IN to become free then send. This of
* course only works using interrupts. */
while (usb_in_endpoint_busy(1))
;
len = usb_get_out_buffer(1, &data);
memcpy(usb_get_in_buffer(1), data, EP_1_IN_LEN);
usb_send_in_buffer(1, len);
}
usb_arm_out_endpoint(1);
}
#ifndef USB_USE_INTERRUPTS
usb_service();
#endif
}
return 0;
}
uint8 USBMidi::isConnected(void) {
return usb_is_connected(USBLIB) && usb_is_configured(USBLIB);
}
