crewID/libnfc
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
libnfc/libnfc/drivers/pn53x_usb.c
Philippe Teuwen b950eacfdf drivers USB: check usb_open() result 
Fixes issue 245
2013-04-05 15:42:57 +02:00

748 lines
25 KiB
C
Raw Blame History

/*-
* Free/Libre Near Field Communication (NFC) library
*
* Libnfc historical contributors:
* Copyright (C) 2009 Roel Verdult
* Copyright (C) 2009-2013 Romuald Conty
* Copyright (C) 2010-2012 Romain Tartière
* Copyright (C) 2010-2013 Philippe Teuwen
* Copyright (C) 2012-2013 Ludovic Rousseau
* Additional contributors of this file:
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
/**
* @file pn53x_usb.c
* @brief Driver for PN53x using USB
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif // HAVE_CONFIG_H
/*
Thanks to d18c7db and Okko for example code
*/
#include <stdio.h>
#include <stdlib.h>
#include <inttypes.h>
#include <sys/select.h>
#include <errno.h>
#include <string.h>
#include <nfc/nfc.h>
#include "nfc-internal.h"
#include "buses/usbbus.h"
#include "chips/pn53x.h"
#include "chips/pn53x-internal.h"
#include "drivers/pn53x_usb.h"
#define PN53X_USB_DRIVER_NAME "pn53x_usb"
#define LOG_CATEGORY "libnfc.driver.pn53x_usb"
#define LOG_GROUP NFC_LOG_GROUP_DRIVER
#define USB_INFINITE_TIMEOUT 0
#define DRIVER_DATA(pnd) ((struct pn53x_usb_data*)(pnd->driver_data))
typedef enum {
UNKNOWN,
NXP_PN531,
SONY_PN531,
NXP_PN533,
ASK_LOGO,
SCM_SCL3711,
SONY_RCS360
} pn53x_usb_model;
// Internal data struct
struct pn53x_usb_data {
usb_dev_handle *pudh;
pn53x_usb_model model;
uint32_t uiEndPointIn;
uint32_t uiEndPointOut;
uint32_t uiMaxPacketSize;
volatile bool abort_flag;
};
// Internal io struct
const struct pn53x_io pn53x_usb_io;
// Prototypes
bool pn53x_usb_get_usb_device_name(struct usb_device *dev, usb_dev_handle *udev, char *buffer, size_t len);
int pn53x_usb_init(nfc_device *pnd);
static int
pn53x_usb_bulk_read(struct pn53x_usb_data *data, uint8_t abtRx[], const size_t szRx, const int timeout)
{
int res = usb_bulk_read(data->pudh, data->uiEndPointIn, (char *) abtRx, szRx, timeout);
if (res > 0) {
LOG_HEX(NFC_LOG_GROUP_COM, "RX", abtRx, res);
} else if (res < 0) {
if (res != -USB_TIMEDOUT)
log_put(NFC_LOG_GROUP_COM, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to read from USB (%s)", _usb_strerror(res));
}
return res;
}
static int
pn53x_usb_bulk_write(struct pn53x_usb_data *data, uint8_t abtTx[], const size_t szTx, const int timeout)
{
LOG_HEX(NFC_LOG_GROUP_COM, "TX", abtTx, szTx);
int res = usb_bulk_write(data->pudh, data->uiEndPointOut, (char *) abtTx, szTx, timeout);
if (res > 0) {
// HACK This little hack is a well know problem of USB, see http://www.libusb.org/ticket/6 for more details
if ((res % data->uiMaxPacketSize) == 0) {
usb_bulk_write(data->pudh, data->uiEndPointOut, "\0", 0, timeout);
}
} else {
log_put(NFC_LOG_GROUP_COM, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to write to USB (%s)", _usb_strerror(res));
}
return res;
}
struct pn53x_usb_supported_device {
uint16_t vendor_id;
uint16_t product_id;
pn53x_usb_model model;
const char *name;
};
const struct pn53x_usb_supported_device pn53x_usb_supported_devices[] = {
{ 0x04CC, 0x0531, NXP_PN531, "Philips / PN531" },
{ 0x04CC, 0x2533, NXP_PN533, "NXP / PN533" },
{ 0x04E6, 0x5591, SCM_SCL3711, "SCM Micro / SCL3711-NFC&RW" },
{ 0x054c, 0x0193, SONY_PN531, "Sony / PN531" },
{ 0x1FD3, 0x0608, ASK_LOGO, "ASK / LoGO" },
{ 0x054C, 0x02E1, SONY_RCS360, "Sony / FeliCa S360 [PaSoRi]" }
};
static pn53x_usb_model
pn53x_usb_get_device_model(uint16_t vendor_id, uint16_t product_id)
{
for (size_t n = 0; n < sizeof(pn53x_usb_supported_devices) / sizeof(struct pn53x_usb_supported_device); n++) {
if ((vendor_id == pn53x_usb_supported_devices[n].vendor_id) &&
(product_id == pn53x_usb_supported_devices[n].product_id))
return pn53x_usb_supported_devices[n].model;
}
return UNKNOWN;
}
int pn53x_usb_ack(nfc_device *pnd);
// Find transfer endpoints for bulk transfers
static void
pn53x_usb_get_end_points(struct usb_device *dev, struct pn53x_usb_data *data)
{
uint32_t uiIndex;
uint32_t uiEndPoint;
struct usb_interface_descriptor *puid = dev->config->interface->altsetting;
// 3 Endpoints maximum: Interrupt In, Bulk In, Bulk Out
for (uiIndex = 0; uiIndex < puid->bNumEndpoints; uiIndex++) {
// Only accept bulk transfer endpoints (ignore interrupt endpoints)
if (puid->endpoint[uiIndex].bmAttributes != USB_ENDPOINT_TYPE_BULK)
continue;
// Copy the endpoint to a local var, makes it more readable code
uiEndPoint = puid->endpoint[uiIndex].bEndpointAddress;
// Test if we dealing with a bulk IN endpoint
if ((uiEndPoint & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_IN) {
data->uiEndPointIn = uiEndPoint;
data->uiMaxPacketSize = puid->endpoint[uiIndex].wMaxPacketSize;
}
// Test if we dealing with a bulk OUT endpoint
if ((uiEndPoint & USB_ENDPOINT_DIR_MASK) == USB_ENDPOINT_OUT) {
data->uiEndPointOut = uiEndPoint;
data->uiMaxPacketSize = puid->endpoint[uiIndex].wMaxPacketSize;
}
}
}
static size_t
pn53x_usb_scan(const nfc_context *context, nfc_connstring connstrings[], const size_t connstrings_len)
{
(void)context;
usb_prepare();
size_t device_found = 0;
uint32_t uiBusIndex = 0;
struct usb_bus *bus;
for (bus = usb_get_busses(); bus; bus = bus->next) {
struct usb_device *dev;
for (dev = bus->devices; dev; dev = dev->next, uiBusIndex++) {
for (size_t n = 0; n < sizeof(pn53x_usb_supported_devices) / sizeof(struct pn53x_usb_supported_device); n++) {
if ((pn53x_usb_supported_devices[n].vendor_id == dev->descriptor.idVendor) &&
(pn53x_usb_supported_devices[n].product_id == dev->descriptor.idProduct)) {
// Make sure there are 2 endpoints available
// with libusb-win32 we got some null pointers so be robust before looking at endpoints:
if (dev->config == NULL || dev->config->interface == NULL || dev->config->interface->altsetting == NULL) {
// Nope, we maybe want the next one, let's try to find another
continue;
}
if (dev->config->interface->altsetting->bNumEndpoints < 2) {
// Nope, we maybe want the next one, let's try to find another
continue;
}
usb_dev_handle *udev = usb_open(dev);
if (udev == NULL)
continue;
// Set configuration
int res = usb_set_configuration(udev, 1);
if (res < 0) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to set USB configuration (%s)", _usb_strerror(res));
usb_close(udev);
// we failed to use the device
continue;
}
// pn53x_usb_get_usb_device_name (dev, udev, pnddDevices[device_found].acDevice, sizeof (pnddDevices[device_found].acDevice));
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "device found: Bus %s Device %s", bus->dirname, dev->filename);
usb_close(udev);
snprintf(connstrings[device_found], sizeof(nfc_connstring), "%s:%s:%s", PN53X_USB_DRIVER_NAME, bus->dirname, dev->filename);
device_found++;
// Test if we reach the maximum "wanted" devices
if (device_found == connstrings_len) {
return device_found;
}
}
}
}
}
return device_found;
}
struct pn53x_usb_descriptor {
char *dirname;
char *filename;
};
bool
pn53x_usb_get_usb_device_name(struct usb_device *dev, usb_dev_handle *udev, char *buffer, size_t len)
{
*buffer = '\0';
if (dev->descriptor.iManufacturer || dev->descriptor.iProduct) {
if (udev) {
usb_get_string_simple(udev, dev->descriptor.iManufacturer, buffer, len);
if (strlen(buffer) > 0)
strcpy(buffer + strlen(buffer), " / ");
usb_get_string_simple(udev, dev->descriptor.iProduct, buffer + strlen(buffer), len - strlen(buffer));
}
}
if (!*buffer) {
for (size_t n = 0; n < sizeof(pn53x_usb_supported_devices) / sizeof(struct pn53x_usb_supported_device); n++) {
if ((pn53x_usb_supported_devices[n].vendor_id == dev->descriptor.idVendor) &&
(pn53x_usb_supported_devices[n].product_id == dev->descriptor.idProduct)) {
strncpy(buffer, pn53x_usb_supported_devices[n].name, len);
buffer[len - 1] = '\0';
return true;
}
}
}
return false;
}
static nfc_device *
pn53x_usb_open(const nfc_context *context, const nfc_connstring connstring)
{
nfc_device *pnd = NULL;
struct pn53x_usb_descriptor desc = { NULL, NULL };
int connstring_decode_level = connstring_decode(connstring, PN53X_USB_DRIVER_NAME, "usb", &desc.dirname, &desc.filename);
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%d element(s) have been decoded from \"%s\"", connstring_decode_level, connstring);
if (connstring_decode_level < 1) {
goto free_mem;
}
struct pn53x_usb_data data = {
.pudh = NULL,
.uiEndPointIn = 0,
.uiEndPointOut = 0,
};
struct usb_bus *bus;
struct usb_device *dev;
usb_prepare();
for (bus = usb_get_busses(); bus; bus = bus->next) {
if (connstring_decode_level > 1) {
// A specific bus have been specified
if (0 != strcmp(bus->dirname, desc.dirname))
continue;
}
for (dev = bus->devices; dev; dev = dev->next) {
if (connstring_decode_level > 2) {
// A specific dev have been specified
if (0 != strcmp(dev->filename, desc.filename))
continue;
}
// Open the USB device
if ((data.pudh = usb_open(dev)) == NULL)
continue;
// Retrieve end points
pn53x_usb_get_end_points(dev, &data);
// Set configuration
int res = usb_set_configuration(data.pudh, 1);
if (res < 0) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to set USB configuration (%s)", _usb_strerror(res));
if (EPERM == -res) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_INFO, "Warning: Please double check USB permissions for device %04x:%04x", dev->descriptor.idVendor, dev->descriptor.idProduct);
}
usb_close(data.pudh);
// we failed to use the specified device
goto free_mem;
}
res = usb_claim_interface(data.pudh, 0);
if (res < 0) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to claim USB interface (%s)", _usb_strerror(res));
usb_close(data.pudh);
// we failed to use the specified device
goto free_mem;
}
data.model = pn53x_usb_get_device_model(dev->descriptor.idVendor, dev->descriptor.idProduct);
// Allocate memory for the device info and specification, fill it and return the info
pnd = nfc_device_new(context, connstring);
if (!pnd) {
perror("malloc");
goto error;
}
pn53x_usb_get_usb_device_name(dev, data.pudh, pnd->name, sizeof(pnd->name));
pnd->driver_data = malloc(sizeof(struct pn53x_usb_data));
if (!pnd->driver_data) {
perror("malloc");
goto error;
}
*DRIVER_DATA(pnd) = data;
// Alloc and init chip's data
if (pn53x_data_new(pnd, &pn53x_usb_io) == NULL) {
perror("malloc");
goto error;
}
switch (DRIVER_DATA(pnd)->model) {
// empirical tuning
case ASK_LOGO:
CHIP_DATA(pnd)->timer_correction = 50;
break;
case SCM_SCL3711:
case NXP_PN533:
CHIP_DATA(pnd)->timer_correction = 46;
break;
case NXP_PN531:
CHIP_DATA(pnd)->timer_correction = 50;
break;
case SONY_PN531:
CHIP_DATA(pnd)->timer_correction = 54;
break;
case SONY_RCS360:
case UNKNOWN:
CHIP_DATA(pnd)->timer_correction = 0; // TODO: allow user to know if timed functions are available
break;
}
pnd->driver = &pn53x_usb_driver;
// HACK1: Send first an ACK as Abort command, to reset chip before talking to it:
pn53x_usb_ack(pnd);
// HACK2: Then send a GetFirmware command to resync USB toggle bit between host & device
// in case host used set_configuration and expects the device to have reset its toggle bit, which PN53x doesn't do
if (pn53x_usb_init(pnd) < 0) {
usb_close(data.pudh);
goto error;
}
DRIVER_DATA(pnd)->abort_flag = false;
goto free_mem;
}
}
// We ran out of devices before the index required
goto free_mem;
error:
// Free allocated structure on error.
nfc_device_free(pnd);
pnd = NULL;
free_mem:
free(desc.dirname);
free(desc.filename);
return pnd;
}
static void
pn53x_usb_close(nfc_device *pnd)
{
pn53x_usb_ack(pnd);
if (DRIVER_DATA(pnd)->model == ASK_LOGO) {
/* Set P30, P31, P32, P33, P35 to logic 1 and P34 to 0 logic */
/* ie. Switch all LEDs off and turn off progressive field */
pn53x_write_register(pnd, PN53X_SFR_P3, 0xFF, _BV(P30) | _BV(P31) | _BV(P32) | _BV(P33) | _BV(P35));
}
pn53x_idle(pnd);
int res;
if ((res = usb_release_interface(DRIVER_DATA(pnd)->pudh, 0)) < 0) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to release USB interface (%s)", _usb_strerror(res));
}
if ((res = usb_close(DRIVER_DATA(pnd)->pudh)) < 0) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to close USB connection (%s)", _usb_strerror(res));
}
pn53x_data_free(pnd);
nfc_device_free(pnd);
}
#define PN53X_USB_BUFFER_LEN (PN53x_EXTENDED_FRAME__DATA_MAX_LEN + PN53x_EXTENDED_FRAME__OVERHEAD)
static int
pn53x_usb_send(nfc_device *pnd, const uint8_t *pbtData, const size_t szData, const int timeout)
{
uint8_t abtFrame[PN53X_USB_BUFFER_LEN] = { 0x00, 0x00, 0xff }; // Every packet must start with "00 00 ff"
size_t szFrame = 0;
int res = 0;
pn53x_build_frame(abtFrame, &szFrame, pbtData, szData);
if ((res = pn53x_usb_bulk_write(DRIVER_DATA(pnd), abtFrame, szFrame, timeout)) < 0) {
pnd->last_error = res;
return pnd->last_error;
}
uint8_t abtRxBuf[PN53X_USB_BUFFER_LEN];
if ((res = pn53x_usb_bulk_read(DRIVER_DATA(pnd), abtRxBuf, sizeof(abtRxBuf), timeout)) < 0) {
// try to interrupt current device state
pn53x_usb_ack(pnd);
pnd->last_error = res;
return pnd->last_error;
}
if (pn53x_check_ack_frame(pnd, abtRxBuf, res) == 0) {
// The PN53x is running the sent command
} else {
// For some reasons (eg. send another command while a previous one is
// running), the PN533 sometimes directly replies the response packet
// instead of ACK frame, so we send a NACK frame to force PN533 to resend
// response packet. With this hack, the nextly executed function (ie.
// pn53x_usb_receive()) will be able to retreive the correct response
// packet.
// FIXME Sony reader is also affected by this bug but NACK is not supported
if ((res = pn53x_usb_bulk_write(DRIVER_DATA(pnd), (uint8_t *)pn53x_nack_frame, sizeof(pn53x_nack_frame), timeout)) < 0) {
pnd->last_error = res;
// try to interrupt current device state
pn53x_usb_ack(pnd);
return pnd->last_error;
}
}
return NFC_SUCCESS;
}
#define USB_TIMEOUT_PER_PASS 200
static int
pn53x_usb_receive(nfc_device *pnd, uint8_t *pbtData, const size_t szDataLen, const int timeout)
{
size_t len;
off_t offset = 0;
uint8_t abtRxBuf[PN53X_USB_BUFFER_LEN];
int res;
/*
* If no timeout is specified but the command is blocking, force a 200ms (USB_TIMEOUT_PER_PASS)
* timeout to allow breaking the loop if the user wants to stop it.
*/
int usb_timeout;
int remaining_time = timeout;
read:
if (timeout == USB_INFINITE_TIMEOUT) {
usb_timeout = USB_TIMEOUT_PER_PASS;
} else {
// A user-provided timeout is set, we have to cut it in multiple chunk to be able to keep an nfc_abort_command() mecanism
remaining_time -= USB_TIMEOUT_PER_PASS;
if (remaining_time <= 0) {
pnd->last_error = NFC_ETIMEOUT;
return pnd->last_error;
} else {
usb_timeout = MIN(remaining_time, USB_TIMEOUT_PER_PASS);
}
}
res = pn53x_usb_bulk_read(DRIVER_DATA(pnd), abtRxBuf, sizeof(abtRxBuf), usb_timeout);
if (res == -USB_TIMEDOUT) {
if (DRIVER_DATA(pnd)->abort_flag) {
DRIVER_DATA(pnd)->abort_flag = false;
pn53x_usb_ack(pnd);
pnd->last_error = NFC_EOPABORTED;
return pnd->last_error;
} else {
goto read;
}
}
if (res < 0) {
// try to interrupt current device state
pn53x_usb_ack(pnd);
pnd->last_error = res;
return pnd->last_error;
}
const uint8_t pn53x_preamble[3] = { 0x00, 0x00, 0xff };
if (0 != (memcmp(abtRxBuf, pn53x_preamble, 3))) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Frame preamble+start code mismatch");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
offset += 3;
if ((0x01 == abtRxBuf[offset]) && (0xff == abtRxBuf[offset + 1])) {
// Error frame
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Application level error detected");
pnd->last_error = NFC_EIO;
return pnd->last_error;
} else if ((0xff == abtRxBuf[offset]) && (0xff == abtRxBuf[offset + 1])) {
// Extended frame
offset += 2;
// (abtRxBuf[offset] << 8) + abtRxBuf[offset + 1] (LEN) include TFI + (CC+1)
len = (abtRxBuf[offset] << 8) + abtRxBuf[offset + 1] - 2;
if (((abtRxBuf[offset] + abtRxBuf[offset + 1] + abtRxBuf[offset + 2]) % 256) != 0) {
// TODO: Retry
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Length checksum mismatch");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
offset += 3;
} else {
// Normal frame
if (256 != (abtRxBuf[offset] + abtRxBuf[offset + 1])) {
// TODO: Retry
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Length checksum mismatch");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
// abtRxBuf[3] (LEN) include TFI + (CC+1)
len = abtRxBuf[offset] - 2;
offset += 2;
}
if (len > szDataLen) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "Unable to receive data: buffer too small. (szDataLen: %" PRIuPTR ", len: %" PRIuPTR ")", szDataLen, len);
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
// TFI + PD0 (CC+1)
if (abtRxBuf[offset] != 0xD5) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "TFI Mismatch");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
offset += 1;
if (abtRxBuf[offset] != CHIP_DATA(pnd)->last_command + 1) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Command Code verification failed");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
offset += 1;
memcpy(pbtData, abtRxBuf + offset, len);
offset += len;
uint8_t btDCS = (256 - 0xD5);
btDCS -= CHIP_DATA(pnd)->last_command + 1;
for (size_t szPos = 0; szPos < len; szPos++) {
btDCS -= pbtData[szPos];
}
if (btDCS != abtRxBuf[offset]) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Data checksum mismatch");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
offset += 1;
if (0x00 != abtRxBuf[offset]) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_ERROR, "%s", "Frame postamble mismatch");
pnd->last_error = NFC_EIO;
return pnd->last_error;
}
// The PN53x command is done and we successfully received the reply
pnd->last_error = 0;
return len;
}
int
pn53x_usb_ack(nfc_device *pnd)
{
return pn53x_usb_bulk_write(DRIVER_DATA(pnd), (uint8_t *) pn53x_ack_frame, sizeof(pn53x_ack_frame), 1000);
}
int
pn53x_usb_init(nfc_device *pnd)
{
int res = 0;
// Sometimes PN53x USB doesn't reply ACK one the first frame, so we need to send a dummy one...
//pn53x_check_communication (pnd); // Sony RC-S360 doesn't support this command for now so let's use a get_firmware_version instead:
const uint8_t abtCmd[] = { GetFirmwareVersion };
pn53x_transceive(pnd, abtCmd, sizeof(abtCmd), NULL, 0, -1);
// ...and we don't care about error
pnd->last_error = 0;
if (SONY_RCS360 == DRIVER_DATA(pnd)->model) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "SONY RC-S360 initialization.");
const uint8_t abtCmd2[] = { 0x18, 0x01 };
pn53x_transceive(pnd, abtCmd2, sizeof(abtCmd2), NULL, 0, -1);
pn53x_usb_ack(pnd);
}
if ((res = pn53x_init(pnd)) < 0)
return res;
if (ASK_LOGO == DRIVER_DATA(pnd)->model) {
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "%s", "ASK LoGO initialization.");
/* Internal registers */
/* Disable 100mA current limit, Power on Secure IC (SVDD) */
pn53x_write_register(pnd, PN53X_REG_Control_switch_rng, 0xFF, SYMBOL_CURLIMOFF | SYMBOL_SIC_SWITCH_EN | SYMBOL_RANDOM_DATAREADY);
/* Select the signal to be output on SIGOUT: Modulation signal (envelope) from the internal coder */
pn53x_write_register(pnd, PN53X_REG_CIU_TxSel, 0xFF, 0x14);
/* SFR Registers */
/* Setup push-pulls for pins from P30 to P35 */
pn53x_write_register(pnd, PN53X_SFR_P3CFGB, 0xFF, 0x37);
/*
On ASK LoGO hardware:
LEDs port bits definition:
* LED 1: bit 2 (P32)
* LED 2: bit 1 (P31)
* LED 3: bit 0 or 3 (depending of hardware revision) (P30 or P33)
* LED 4: bit 5 (P35)
Notes:
* Set logical 0 to switch LED on; logical 1 to switch LED off.
* Bit 4 should be maintained at 1 to keep RF field on.
Progressive field activation:
The ASK LoGO hardware can progressively power-up the antenna.
To use this feature we have to switch on the field by switching on
the field on PN533 (RFConfiguration) then set P34 to '1', and cut-off the
field by switching off the field on PN533 then set P34 to '0'.
*/
/* Set P30, P31, P33, P35 to logic 1 and P32, P34 to 0 logic */
/* ie. Switch LED1 on and turn off progressive field */
pn53x_write_register(pnd, PN53X_SFR_P3, 0xFF, _BV(P30) | _BV(P31) | _BV(P33) | _BV(P35));
}
return NFC_SUCCESS;
}
static int
pn53x_usb_set_property_bool(nfc_device *pnd, const nfc_property property, const bool bEnable)
{
int res = 0;
if ((res = pn53x_set_property_bool(pnd, property, bEnable)) < 0)
return res;
switch (DRIVER_DATA(pnd)->model) {
case ASK_LOGO:
if (NP_ACTIVATE_FIELD == property) {
/* Switch on/off LED2 and Progressive Field GPIO according to ACTIVATE_FIELD option */
log_put(LOG_GROUP, LOG_CATEGORY, NFC_LOG_PRIORITY_DEBUG, "Switch progressive field %s", bEnable ? "On" : "Off");
if ((res = pn53x_write_register(pnd, PN53X_SFR_P3, _BV(P31) | _BV(P34), bEnable ? _BV(P34) : _BV(P31))) < 0)
return NFC_ECHIP;
}
break;
case SCM_SCL3711:
if (NP_ACTIVATE_FIELD == property) {
// Switch on/off LED according to ACTIVATE_FIELD option
if ((res = pn53x_write_register(pnd, PN53X_SFR_P3, _BV(P32), bEnable ? 0 : _BV(P32))) < 0)
return res;
}
break;
case NXP_PN531:
case NXP_PN533:
case SONY_PN531:
case SONY_RCS360:
case UNKNOWN:
// Nothing to do.
break;
}
return NFC_SUCCESS;
}
static int
pn53x_usb_abort_command(nfc_device *pnd)
{
DRIVER_DATA(pnd)->abort_flag = true;
return NFC_SUCCESS;
}
const struct pn53x_io pn53x_usb_io = {
.send = pn53x_usb_send,
.receive = pn53x_usb_receive,
};
const struct nfc_driver pn53x_usb_driver = {
.name = PN53X_USB_DRIVER_NAME,
.scan_type = NOT_INTRUSIVE,
.scan = pn53x_usb_scan,
.open = pn53x_usb_open,
.close = pn53x_usb_close,
.strerror = pn53x_strerror,
.initiator_init = pn53x_initiator_init,
.initiator_init_secure_element = NULL, // No secure-element support
.initiator_select_passive_target = pn53x_initiator_select_passive_target,
.initiator_poll_target = pn53x_initiator_poll_target,
.initiator_select_dep_target = pn53x_initiator_select_dep_target,
.initiator_deselect_target = pn53x_initiator_deselect_target,
.initiator_transceive_bytes = pn53x_initiator_transceive_bytes,
.initiator_transceive_bits = pn53x_initiator_transceive_bits,
.initiator_transceive_bytes_timed = pn53x_initiator_transceive_bytes_timed,
.initiator_transceive_bits_timed = pn53x_initiator_transceive_bits_timed,
.initiator_target_is_present = pn53x_initiator_target_is_present,
.target_init = pn53x_target_init,
.target_send_bytes = pn53x_target_send_bytes,
.target_receive_bytes = pn53x_target_receive_bytes,
.target_send_bits = pn53x_target_send_bits,
.target_receive_bits = pn53x_target_receive_bits,
.device_set_property_bool = pn53x_usb_set_property_bool,
.device_set_property_int = pn53x_set_property_int,
.get_supported_modulation = pn53x_get_supported_modulation,
.get_supported_baud_rate = pn53x_get_supported_baud_rate,
.device_get_information_about = pn53x_get_information_about,
.abort_command = pn53x_usb_abort_command,
.idle = pn53x_idle,
.powerdown = pn53x_PowerDown,
};
Reference in a new issue View git blame Copy permalink