ftdi.c - description
-------------------
begin : Fri Apr 4 2003
- copyright : (C) 2003-2014 by Intra2net AG and the libftdi developers
+ copyright : (C) 2003-2020 by Intra2net AG and the libftdi developers
email : opensource@intra2net.com
+ SPDX-License-Identifier: LGPL-2.1-only
***************************************************************************/
/***************************************************************************
\mainpage libftdi API documentation
Library to talk to FTDI chips. You find the latest versions of libftdi at
- http://www.intra2net.com/en/developer/libftdi/
+ https://www.intra2net.com/en/developer/libftdi/
The library is easy to use. Have a look at this short example:
\include simple.c
#include <stdlib.h>
#include "ftdi_i.h"
+/* Prevent deprecated messages when building library */
+#define _FTDI_DISABLE_DEPRECATED
#include "ftdi.h"
#include "ftdi_version_i.h"
*/
int ftdi_init(struct ftdi_context *ftdi)
{
- struct ftdi_eeprom* eeprom = (struct ftdi_eeprom *)malloc(sizeof(struct ftdi_eeprom));
+ struct ftdi_eeprom* eeprom;
ftdi->usb_ctx = NULL;
ftdi->usb_dev = NULL;
ftdi->usb_read_timeout = 5000;
ftdi_set_interface(ftdi, INTERFACE_ANY);
ftdi->bitbang_mode = 1; /* when bitbang is enabled this holds the number of the mode */
+ eeprom = (struct ftdi_eeprom *)malloc(sizeof(struct ftdi_eeprom));
if (eeprom == 0)
ftdi_error_return(-2, "Can't malloc struct ftdi_eeprom");
memset(eeprom, 0, sizeof(struct ftdi_eeprom));
char *serial, int serial_len)
{
struct libusb_device_descriptor desc;
+ char need_open;
if ((ftdi==NULL) || (dev==NULL))
return -1;
- char need_open = (ftdi->usb_dev == NULL);
+ need_open = (ftdi->usb_dev == NULL);
if (need_open && libusb_open(dev, &ftdi->usb_dev) < 0)
ftdi_error_return(-4, "libusb_open() failed");
if (libusb_get_device_descriptor(dev, &desc) < 0)
ftdi_error_return(-11, "libusb_get_device_descriptor() failed");
- if (manufacturer != NULL)
+ if (manufacturer != NULL && mnf_len > 0)
{
- if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iManufacturer, (unsigned char *)manufacturer, mnf_len) < 0)
+ if (desc.iManufacturer == 0)
+ {
+ manufacturer[0] = '\0';
+ }
+ else if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iManufacturer, (unsigned char *)manufacturer, mnf_len) < 0)
{
ftdi_usb_close_internal (ftdi);
ftdi_error_return(-7, "libusb_get_string_descriptor_ascii() failed");
}
}
- if (description != NULL)
+ if (description != NULL && desc_len > 0)
{
- if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)description, desc_len) < 0)
+ if (desc.iProduct == 0)
+ {
+ description[0] = '\0';
+ }
+ else if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iProduct, (unsigned char *)description, desc_len) < 0)
{
ftdi_usb_close_internal (ftdi);
ftdi_error_return(-8, "libusb_get_string_descriptor_ascii() failed");
}
}
- if (serial != NULL)
+ if (serial != NULL && serial_len > 0)
{
- if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)serial, serial_len) < 0)
+ if (desc.iSerialNumber == 0)
+ {
+ serial[0] = '\0';
+ }
+ else if (libusb_get_string_descriptor_ascii(ftdi->usb_dev, desc.iSerialNumber, (unsigned char *)serial, serial_len) < 0)
{
ftdi_usb_close_internal (ftdi);
ftdi_error_return(-9, "libusb_get_string_descriptor_ascii() failed");
if (libusb_detach_kernel_driver(ftdi->usb_dev, ftdi->interface) !=0)
detach_errno = errno;
}
+ else if (ftdi->module_detach_mode == AUTO_DETACH_REATACH_SIO_MODULE)
+ {
+ if (libusb_set_auto_detach_kernel_driver(ftdi->usb_dev, 1) != LIBUSB_SUCCESS)
+ detach_errno = errno;
+ }
if (libusb_get_configuration (ftdi->usb_dev, &cfg) < 0)
ftdi_error_return(-12, "libusb_get_configuration () failed");
\retval -9: get serial number failed
\retval -10: unable to close device
\retval -11: ftdi context invalid
+ \retval -12: libusb_get_device_list() failed
*/
int ftdi_usb_open_desc_index(struct ftdi_context *ftdi, int vendor, int product,
const char* description, const char* serial, unsigned int index)
}
/**
+ Opens the device at a given USB bus and device address.
+
+ \param ftdi pointer to ftdi_context
+ \param bus Bus number
+ \param addr Device address
+
+ \retval 0: all fine
+ \retval -1: usb_find_busses() failed
+ \retval -2: usb_find_devices() failed
+ \retval -3: usb device not found
+ \retval -4: unable to open device
+ \retval -5: unable to claim device
+ \retval -6: reset failed
+ \retval -7: set baudrate failed
+ \retval -8: get product description failed
+ \retval -9: get serial number failed
+ \retval -10: unable to close device
+ \retval -11: ftdi context invalid
+ \retval -12: libusb_get_device_list() failed
+*/
+int ftdi_usb_open_bus_addr(struct ftdi_context *ftdi, uint8_t bus, uint8_t addr)
+{
+ libusb_device *dev;
+ libusb_device **devs;
+ int i = 0;
+
+ if (ftdi == NULL)
+ ftdi_error_return(-11, "ftdi context invalid");
+
+ if (libusb_get_device_list(ftdi->usb_ctx, &devs) < 0)
+ ftdi_error_return(-12, "libusb_get_device_list() failed");
+
+ while ((dev = devs[i++]) != NULL)
+ {
+ if (libusb_get_bus_number(dev) == bus && libusb_get_device_address(dev) == addr)
+ {
+ int res;
+ res = ftdi_usb_open_dev(ftdi, dev);
+ libusb_free_device_list(devs,1);
+ return res;
+ }
+ }
+
+ // device not found
+ ftdi_error_return_free_device_list(-3, "device not found", devs);
+}
+
+/**
Opens the ftdi-device described by a description-string.
Intended to be used for parsing a device-description given as commandline argument.
/**
Clears the read buffer on the chip and the internal read buffer.
+ This is the correct behavior for an RX flush.
\param ftdi pointer to ftdi_context
\retval -1: read buffer purge failed
\retval -2: USB device unavailable
*/
+int ftdi_tciflush(struct ftdi_context *ftdi)
+{
+ if (ftdi == NULL || ftdi->usb_dev == NULL)
+ ftdi_error_return(-2, "USB device unavailable");
+
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE,
+ SIO_RESET_REQUEST, SIO_TCIFLUSH,
+ ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0)
+ ftdi_error_return(-1, "FTDI purge of RX buffer failed");
+
+ // Invalidate data in the readbuffer
+ ftdi->readbuffer_offset = 0;
+ ftdi->readbuffer_remaining = 0;
+
+ return 0;
+}
+
+
+/**
+ Clears the write buffer on the chip and the internal read buffer.
+ This is incorrect behavior for an RX flush.
+
+ \param ftdi pointer to ftdi_context
+
+ \retval 0: all fine
+ \retval -1: write buffer purge failed
+ \retval -2: USB device unavailable
+
+ \deprecated Use \ref ftdi_tciflush(struct ftdi_context *ftdi)
+*/
int ftdi_usb_purge_rx_buffer(struct ftdi_context *ftdi)
{
if (ftdi == NULL || ftdi->usb_dev == NULL)
/**
Clears the write buffer on the chip.
+ This is correct behavior for a TX flush.
\param ftdi pointer to ftdi_context
\retval -1: write buffer purge failed
\retval -2: USB device unavailable
*/
+int ftdi_tcoflush(struct ftdi_context *ftdi)
+{
+ if (ftdi == NULL || ftdi->usb_dev == NULL)
+ ftdi_error_return(-2, "USB device unavailable");
+
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE,
+ SIO_RESET_REQUEST, SIO_TCOFLUSH,
+ ftdi->index, NULL, 0, ftdi->usb_write_timeout) < 0)
+ ftdi_error_return(-1, "FTDI purge of TX buffer failed");
+
+ return 0;
+}
+
+
+/**
+ Clears the read buffer on the chip.
+ This is incorrect behavior for a TX flush.
+
+ \param ftdi pointer to ftdi_context
+
+ \retval 0: all fine
+ \retval -1: read buffer purge failed
+ \retval -2: USB device unavailable
+
+ \deprecated Use \ref ftdi_tcoflush(struct ftdi_context *ftdi)
+*/
int ftdi_usb_purge_tx_buffer(struct ftdi_context *ftdi)
{
if (ftdi == NULL || ftdi->usb_dev == NULL)
}
/**
+ Clears the RX and TX FIFOs on the chip and the internal read buffer.
+ This is correct behavior for both RX and TX flush.
+
+ \param ftdi pointer to ftdi_context
+
+ \retval 0: all fine
+ \retval -1: read buffer purge failed
+ \retval -2: write buffer purge failed
+ \retval -3: USB device unavailable
+*/
+int ftdi_tcioflush(struct ftdi_context *ftdi)
+{
+ int result;
+
+ if (ftdi == NULL || ftdi->usb_dev == NULL)
+ ftdi_error_return(-3, "USB device unavailable");
+
+ result = ftdi_tcoflush(ftdi);
+ if (result < 0)
+ return -1;
+
+ result = ftdi_tciflush(ftdi);
+ if (result < 0)
+ return -2;
+
+ return 0;
+}
+
+/**
Clears the buffers on the chip and the internal read buffer.
+ While coded incorrectly, the result is satisfactory.
\param ftdi pointer to ftdi_context
\retval -1: read buffer purge failed
\retval -2: write buffer purge failed
\retval -3: USB device unavailable
+
+ \deprecated Use \ref ftdi_tcioflush(struct ftdi_context *ftdi)
*/
int ftdi_usb_purge_buffers(struct ftdi_context *ftdi)
{
AM Type chips have only four fractional subdivisors at value[15:14]
for subdivisors 0, 0.5, 0.25, 0.125
*/
-static int ftdi_to_clkbits(int baudrate, unsigned int clk, int clk_div, unsigned long *encoded_divisor)
+static int ftdi_to_clkbits(int baudrate, int clk, int clk_div, unsigned long *encoded_divisor)
{
static const char frac_code[8] = {0, 3, 2, 4, 1, 5, 6, 7};
int best_baud = 0;
else
best_baud = ftdi_to_clkbits(baudrate, C_CLK, 16, &encoded_divisor);
}
- else if ((ftdi->type == TYPE_BM) || (ftdi->type == TYPE_2232C) || (ftdi->type == TYPE_R ))
+ else if ((ftdi->type == TYPE_BM) || (ftdi->type == TYPE_2232C) || (ftdi->type == TYPE_R) || (ftdi->type == TYPE_230X))
{
best_baud = ftdi_to_clkbits(baudrate, C_CLK, 16, &encoded_divisor);
}
/**
Reads data in chunks (see ftdi_read_data_set_chunksize()) from the chip.
- Automatically strips the two modem status bytes transfered during every read.
+ Automatically strips the two modem status bytes transferred during every read.
\param ftdi pointer to ftdi_context
\param buf Buffer to store data in
int ftdi_read_data(struct ftdi_context *ftdi, unsigned char *buf, int size)
{
int offset = 0, ret, i, num_of_chunks, chunk_remains;
- int packet_size = ftdi->max_packet_size;
+ int packet_size;
int actual_length = 1;
if (ftdi == NULL || ftdi->usb_dev == NULL)
ftdi_error_return(-666, "USB device unavailable");
// Packet size sanity check (avoid division by zero)
+ packet_size = ftdi->max_packet_size;
if (packet_size == 0)
ftdi_error_return(-1, "max_packet_size is bogus (zero)");
/**
Set flowcontrol for ftdi chip
+ Note: Do not use this function to enable XON/XOFF mode, use ftdi_setflowctrl_xonxoff() instead.
+
\param ftdi pointer to ftdi_context
\param flowctrl flow control to use. should be
- SIO_DISABLE_FLOW_CTRL, SIO_RTS_CTS_HS, SIO_DTR_DSR_HS or SIO_XON_XOFF_HS
+ SIO_DISABLE_FLOW_CTRL, SIO_RTS_CTS_HS, SIO_DTR_DSR_HS
\retval 0: all fine
\retval -1: set flow control failed
}
/**
+ Set XON/XOFF flowcontrol for ftdi chip
+
+ \param ftdi pointer to ftdi_context
+ \param xon character code used to resume transmission
+ \param xoff character code used to pause transmission
+
+ \retval 0: all fine
+ \retval -1: set flow control failed
+ \retval -2: USB device unavailable
+*/
+int ftdi_setflowctrl_xonxoff(struct ftdi_context *ftdi, unsigned char xon, unsigned char xoff)
+{
+ if (ftdi == NULL || ftdi->usb_dev == NULL)
+ ftdi_error_return(-2, "USB device unavailable");
+
+ uint16_t xonxoff = xon | (xoff << 8);
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_OUT_REQTYPE,
+ SIO_SET_FLOW_CTRL_REQUEST, xonxoff, (SIO_XON_XOFF_HS | ftdi->index),
+ NULL, 0, ftdi->usb_write_timeout) < 0)
+ ftdi_error_return(-1, "set flow control failed");
+
+ return 0;
+}
+
+/**
Set dtr line
\param ftdi pointer to ftdi_context
\retval -2: No struct ftdi_eeprom
\retval -3: No connected device or device not yet opened
*/
-int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi, char * manufacturer,
- char * product, char * serial)
+int ftdi_eeprom_initdefaults(struct ftdi_context *ftdi, const char * manufacturer,
+ const char * product, const char * serial)
{
struct ftdi_eeprom *eeprom;
ftdi_error_return(-3, "No connected device or device not yet opened");
eeprom->vendor_id = 0x0403;
- eeprom->use_serial = 1;
+ eeprom->use_serial = (serial != NULL);
if ((ftdi->type == TYPE_AM) || (ftdi->type == TYPE_BM) ||
(ftdi->type == TYPE_R))
eeprom->product_id = 0x6001;
eeprom->manufacturer = NULL;
if (manufacturer)
{
- eeprom->manufacturer = malloc(strlen(manufacturer)+1);
+ eeprom->manufacturer = (char *)malloc(strlen(manufacturer)+1);
if (eeprom->manufacturer)
strcpy(eeprom->manufacturer, manufacturer);
}
eeprom->product = NULL;
if(product)
{
- eeprom->product = malloc(strlen(product)+1);
+ eeprom->product = (char *)malloc(strlen(product)+1);
if (eeprom->product)
strcpy(eeprom->product, product);
}
default:
ftdi_error_return(-3, "Unknown chip type");
}
- eeprom->product = malloc(strlen(default_product) +1);
+ eeprom->product = (char *)malloc(strlen(default_product) +1);
if (eeprom->product)
strcpy(eeprom->product, default_product);
}
eeprom->serial = NULL;
if (serial)
{
- eeprom->serial = malloc(strlen(serial)+1);
+ eeprom->serial = (char *)malloc(strlen(serial)+1);
if (eeprom->serial)
strcpy(eeprom->serial, serial);
}
return 0;
}
-int ftdi_eeprom_set_strings(struct ftdi_context *ftdi, char * manufacturer,
- char * product, char * serial)
+int ftdi_eeprom_set_strings(struct ftdi_context *ftdi, const char * manufacturer,
+ const char * product, const char * serial)
{
struct ftdi_eeprom *eeprom;
{
if (eeprom->manufacturer)
free (eeprom->manufacturer);
- eeprom->manufacturer = malloc(strlen(manufacturer)+1);
+ eeprom->manufacturer = (char *)malloc(strlen(manufacturer)+1);
if (eeprom->manufacturer)
strcpy(eeprom->manufacturer, manufacturer);
}
{
if (eeprom->product)
free (eeprom->product);
- eeprom->product = malloc(strlen(product)+1);
+ eeprom->product = (char *)malloc(strlen(product)+1);
if (eeprom->product)
strcpy(eeprom->product, product);
}
{
if (eeprom->serial)
free (eeprom->serial);
- eeprom->serial = malloc(strlen(serial)+1);
+ eeprom->serial = (char *)malloc(strlen(serial)+1);
if (eeprom->serial)
{
strcpy(eeprom->serial, serial);
return 0;
}
+/**
+ Return device ID strings from the eeprom. Device needs to be connected.
+
+ The parameters manufacturer, description and serial may be NULL
+ or pointer to buffers to store the fetched strings.
+
+ \param ftdi pointer to ftdi_context
+ \param manufacturer Store manufacturer string here if not NULL
+ \param mnf_len Buffer size of manufacturer string
+ \param product Store product description string here if not NULL
+ \param prod_len Buffer size of product description string
+ \param serial Store serial string here if not NULL
+ \param serial_len Buffer size of serial string
+
+ \retval 0: all fine
+ \retval -1: ftdi context invalid
+ \retval -2: ftdi eeprom buffer invalid
+*/
+int ftdi_eeprom_get_strings(struct ftdi_context *ftdi,
+ char *manufacturer, int mnf_len,
+ char *product, int prod_len,
+ char *serial, int serial_len)
+{
+ struct ftdi_eeprom *eeprom;
+
+ if (ftdi == NULL)
+ ftdi_error_return(-1, "No struct ftdi_context");
+ if (ftdi->eeprom == NULL)
+ ftdi_error_return(-2, "No struct ftdi_eeprom");
+
+ eeprom = ftdi->eeprom;
+
+ if (manufacturer)
+ {
+ strncpy(manufacturer, eeprom->manufacturer, mnf_len);
+ if (mnf_len > 0)
+ manufacturer[mnf_len - 1] = '\0';
+ }
+
+ if (product)
+ {
+ strncpy(product, eeprom->product, prod_len);
+ if (prod_len > 0)
+ product[prod_len - 1] = '\0';
+ }
+
+ if (serial)
+ {
+ strncpy(serial, eeprom->serial, serial_len);
+ if (serial_len > 0)
+ serial[serial_len - 1] = '\0';
+ }
+
+ return 0;
+}
/*FTD2XX doesn't check for values not fitting in the ACBUS Signal options*/
void set_ft232h_cbus(struct ftdi_eeprom *eeprom, unsigned char * output)
case TYPE_2232H:
case TYPE_4232H:
i += 2;
+ /* Fall through*/
case TYPE_R:
i += 2;
+ /* Fall through*/
case TYPE_2232C:
i += 2;
+ /* Fall through*/
case TYPE_AM:
case TYPE_BM:
i += 0x94;
}
output[0x11] = product_size*2 + 2;
- // Addr 12: Offset of the serial string + 0x80, calculated later
- // Addr 13: Length of serial string
- output[0x12] = i | 0x80; // calculate offset
- output[i & eeprom_size_mask] = serial_size*2 + 2, i++;
- output[i & eeprom_size_mask] = 0x03, i++;
- for (j = 0; j < serial_size; j++)
- {
- output[i & eeprom_size_mask] = eeprom->serial[j], i++;
- output[i & eeprom_size_mask] = 0x00, i++;
+ if (eeprom->use_serial) {
+ // Addr 12: Offset of the serial string + 0x80, calculated later
+ // Addr 13: Length of serial string
+ output[0x12] = i | 0x80; // calculate offset
+ output[i & eeprom_size_mask] = serial_size*2 + 2, i++;
+ output[i & eeprom_size_mask] = 0x03, i++;
+ for (j = 0; j < serial_size; j++)
+ {
+ output[i & eeprom_size_mask] = eeprom->serial[j], i++;
+ output[i & eeprom_size_mask] = 0x00, i++;
+ }
+ output[0x13] = serial_size*2 + 2;
}
// Legacy port name and PnP fields for FT2232 and newer chips
- if (ftdi->type > TYPE_BM)
+ // It doesn't appear when written with FT_Prog for FT4232H chip.
+ if (ftdi->type > TYPE_BM && ftdi->type != TYPE_4232H)
{
output[i & eeprom_size_mask] = 0x02; /* as seen when written with FTD2XX */
i++;
i++;
}
- output[0x13] = serial_size*2 + 2;
-
if (ftdi->type > TYPE_AM) /* use_serial not used in AM devices */
{
if (eeprom->use_serial)
case TYPE_2232C:
output[0x00] = type2bit(eeprom->channel_a_type, TYPE_2232C);
- if ( eeprom->channel_a_driver == DRIVER_VCP)
+ if (eeprom->channel_a_driver)
output[0x00] |= DRIVER_VCP;
else
output[0x00] &= ~DRIVER_VCP;
- if ( eeprom->high_current_a == HIGH_CURRENT_DRIVE)
+ if (eeprom->high_current_a)
output[0x00] |= HIGH_CURRENT_DRIVE;
else
output[0x00] &= ~HIGH_CURRENT_DRIVE;
output[0x01] = type2bit(eeprom->channel_b_type, TYPE_2232C);
- if ( eeprom->channel_b_driver == DRIVER_VCP)
+ if (eeprom->channel_b_driver)
output[0x01] |= DRIVER_VCP;
else
output[0x01] &= ~DRIVER_VCP;
- if ( eeprom->high_current_b == HIGH_CURRENT_DRIVE)
+ if (eeprom->high_current_b)
output[0x01] |= HIGH_CURRENT_DRIVE;
else
output[0x01] &= ~HIGH_CURRENT_DRIVE;
break;
case TYPE_R:
output[0x00] = type2bit(eeprom->channel_a_type, TYPE_R);
- if (eeprom->high_current == HIGH_CURRENT_DRIVE_R)
+ if (eeprom->high_current)
output[0x00] |= HIGH_CURRENT_DRIVE_R;
+
+ /* Field is inverted for TYPE_R: Bit 00.3 set to 1 is D2XX, VCP is 0 */
+ if (eeprom->channel_a_driver)
+ output[0x00] &= ~DRIVER_VCP;
+ else
+ output[0x00] |= DRIVER_VCP;
+
if (eeprom->external_oscillator)
output[0x00] |= 0x02;
output[0x01] = 0x40; /* Hard coded Endpoint Size*/
break;
case TYPE_2232H:
output[0x00] = type2bit(eeprom->channel_a_type, TYPE_2232H);
- if ( eeprom->channel_a_driver == DRIVER_VCP)
+ if (eeprom->channel_a_driver)
output[0x00] |= DRIVER_VCP;
else
output[0x00] &= ~DRIVER_VCP;
output[0x01] = type2bit(eeprom->channel_b_type, TYPE_2232H);
- if ( eeprom->channel_b_driver == DRIVER_VCP)
+ if (eeprom->channel_b_driver)
output[0x01] |= DRIVER_VCP;
else
output[0x01] &= ~DRIVER_VCP;
- if (eeprom->suspend_dbus7 == SUSPEND_DBUS7_BIT)
+
+ if (eeprom->suspend_dbus7)
output[0x01] |= SUSPEND_DBUS7_BIT;
else
output[0x01] &= ~SUSPEND_DBUS7_BIT;
output[0x0c] |= DRIVE_16MA;
else
output[0x0c] |= eeprom->group0_drive;
- if (eeprom->group0_schmitt == IS_SCHMITT)
+ if (eeprom->group0_schmitt)
output[0x0c] |= IS_SCHMITT;
- if (eeprom->group0_slew == SLOW_SLEW)
+ if (eeprom->group0_slew)
output[0x0c] |= SLOW_SLEW;
if (eeprom->group1_drive > DRIVE_16MA)
output[0x0c] |= DRIVE_16MA<<4;
else
output[0x0c] |= eeprom->group1_drive<<4;
- if (eeprom->group1_schmitt == IS_SCHMITT)
+ if (eeprom->group1_schmitt)
output[0x0c] |= IS_SCHMITT<<4;
- if (eeprom->group1_slew == SLOW_SLEW)
+ if (eeprom->group1_slew)
output[0x0c] |= SLOW_SLEW<<4;
if (eeprom->group2_drive > DRIVE_16MA)
output[0x0d] |= DRIVE_16MA;
else
output[0x0d] |= eeprom->group2_drive;
- if (eeprom->group2_schmitt == IS_SCHMITT)
+ if (eeprom->group2_schmitt)
output[0x0d] |= IS_SCHMITT;
- if (eeprom->group2_slew == SLOW_SLEW)
+ if (eeprom->group2_slew)
output[0x0d] |= SLOW_SLEW;
if (eeprom->group3_drive > DRIVE_16MA)
output[0x0d] |= DRIVE_16MA<<4;
else
output[0x0d] |= eeprom->group3_drive<<4;
- if (eeprom->group3_schmitt == IS_SCHMITT)
+ if (eeprom->group3_schmitt)
output[0x0d] |= IS_SCHMITT<<4;
- if (eeprom->group3_slew == SLOW_SLEW)
+ if (eeprom->group3_slew)
output[0x0d] |= SLOW_SLEW<<4;
output[0x18] = eeprom->chip;
break;
case TYPE_4232H:
- if (eeprom->channel_a_driver == DRIVER_VCP)
+ if (eeprom->channel_a_driver)
output[0x00] |= DRIVER_VCP;
else
output[0x00] &= ~DRIVER_VCP;
- if (eeprom->channel_b_driver == DRIVER_VCP)
+ if (eeprom->channel_b_driver)
output[0x01] |= DRIVER_VCP;
else
output[0x01] &= ~DRIVER_VCP;
- if (eeprom->channel_c_driver == DRIVER_VCP)
+ if (eeprom->channel_c_driver)
output[0x00] |= (DRIVER_VCP << 4);
else
output[0x00] &= ~(DRIVER_VCP << 4);
- if (eeprom->channel_d_driver == DRIVER_VCP)
+ if (eeprom->channel_d_driver)
output[0x01] |= (DRIVER_VCP << 4);
else
output[0x01] &= ~(DRIVER_VCP << 4);
output[0x0c] |= DRIVE_16MA;
else
output[0x0c] |= eeprom->group0_drive;
- if (eeprom->group0_schmitt == IS_SCHMITT)
+ if (eeprom->group0_schmitt)
output[0x0c] |= IS_SCHMITT;
- if (eeprom->group0_slew == SLOW_SLEW)
+ if (eeprom->group0_slew)
output[0x0c] |= SLOW_SLEW;
if (eeprom->group1_drive > DRIVE_16MA)
output[0x0c] |= DRIVE_16MA<<4;
else
output[0x0c] |= eeprom->group1_drive<<4;
- if (eeprom->group1_schmitt == IS_SCHMITT)
+ if (eeprom->group1_schmitt)
output[0x0c] |= IS_SCHMITT<<4;
- if (eeprom->group1_slew == SLOW_SLEW)
+ if (eeprom->group1_slew)
output[0x0c] |= SLOW_SLEW<<4;
if (eeprom->group2_drive > DRIVE_16MA)
output[0x0d] |= DRIVE_16MA;
else
output[0x0d] |= eeprom->group2_drive;
- if (eeprom->group2_schmitt == IS_SCHMITT)
+ if (eeprom->group2_schmitt)
output[0x0d] |= IS_SCHMITT;
- if (eeprom->group2_slew == SLOW_SLEW)
+ if (eeprom->group2_slew)
output[0x0d] |= SLOW_SLEW;
if (eeprom->group3_drive > DRIVE_16MA)
output[0x0d] |= DRIVE_16MA<<4;
else
output[0x0d] |= eeprom->group3_drive<<4;
- if (eeprom->group3_schmitt == IS_SCHMITT)
+ if (eeprom->group3_schmitt)
output[0x0d] |= IS_SCHMITT<<4;
- if (eeprom->group3_slew == SLOW_SLEW)
+ if (eeprom->group3_slew)
output[0x0d] |= SLOW_SLEW<<4;
output[0x18] = eeprom->chip;
break;
case TYPE_232H:
output[0x00] = type2bit(eeprom->channel_a_type, TYPE_232H);
- if ( eeprom->channel_a_driver == DRIVER_VCP)
+ if (eeprom->channel_a_driver)
output[0x00] |= DRIVER_VCPH;
else
output[0x00] &= ~DRIVER_VCPH;
+
if (eeprom->powersave)
output[0x01] |= POWER_SAVE_DISABLE_H;
else
output[0x01] |= FT1284_FLOW_CONTROL;
else
output[0x01] &= ~FT1284_FLOW_CONTROL;
+
if (eeprom->group0_drive > DRIVE_16MA)
output[0x0c] |= DRIVE_16MA;
else
output[0x0c] |= eeprom->group0_drive;
- if (eeprom->group0_schmitt == IS_SCHMITT)
+ if (eeprom->group0_schmitt)
output[0x0c] |= IS_SCHMITT;
- if (eeprom->group0_slew == SLOW_SLEW)
+ if (eeprom->group0_slew)
output[0x0c] |= SLOW_SLEW;
if (eeprom->group1_drive > DRIVE_16MA)
output[0x0d] |= DRIVE_16MA;
else
output[0x0d] |= eeprom->group1_drive;
- if (eeprom->group1_schmitt == IS_SCHMITT)
+ if (eeprom->group1_schmitt)
output[0x0d] |= IS_SCHMITT;
- if (eeprom->group1_slew == SLOW_SLEW)
+ if (eeprom->group1_slew)
output[0x0d] |= SLOW_SLEW;
set_ft232h_cbus(eeprom, output);
output[0x1e] = eeprom->chip;
- fprintf(stderr,"FIXME: Build FT232H specific EEPROM settings\n");
+ /* FIXME: Build FT232H specific EEPROM settings */
break;
case TYPE_230X:
output[0x00] = 0x80; /* Actually, leave the default value */
- output[0x0a] = 0x08; /* Enable USB Serial Number */
/*FIXME: Make DBUS & CBUS Control configurable*/
output[0x0c] = 0; /* DBUS drive 4mA, CBUS drive 4 mA like factory default */
for (j = 0; j <= 6; j++)
{
case TYPE_230X:
free_start += 2;
+ /* Fall through*/
case TYPE_232H:
free_start += 6;
+ /* Fall through*/
case TYPE_2232H:
case TYPE_4232H:
free_start += 2;
+ /* Fall through*/
case TYPE_R:
free_start += 2;
+ /* Fall through*/
case TYPE_2232C:
free_start++;
+ /* Fall through*/
case TYPE_AM:
case TYPE_BM:
free_start += 0x14;
*/
static void print_inverted_bits(int invert)
{
- char *r_bits[] = {"TXD","RXD","RTS","CTS","DTR","DSR","DCD","RI"};
+ const char *r_bits[] = {"TXD","RXD","RTS","CTS","DTR","DSR","DCD","RI"};
int i;
fprintf(stdout,"Inverted bits:");
// Bit 7: always 1
// Bit 6: 1 if this device is self powered, 0 if bus powered
// Bit 5: 1 if this device uses remote wakeup
- eeprom->self_powered = buf[0x08] & 0x40;
- eeprom->remote_wakeup = buf[0x08] & 0x20;
+ eeprom->self_powered = !!(buf[0x08] & 0x40);
+ eeprom->remote_wakeup = !!(buf[0x08] & 0x20);
// Addr 09: Max power consumption: max power = value * 2 mA
eeprom->max_power = MAX_POWER_MILLIAMP_PER_UNIT * buf[0x09];
// Bit 1: 1 - Out EndPoint is Isochronous
// Bit 0: 1 - In EndPoint is Isochronous
//
- eeprom->in_is_isochronous = buf[0x0A]&0x01;
- eeprom->out_is_isochronous = buf[0x0A]&0x02;
- eeprom->suspend_pull_downs = buf[0x0A]&0x04;
+ eeprom->in_is_isochronous = !!(buf[0x0A]&0x01);
+ eeprom->out_is_isochronous = !!(buf[0x0A]&0x02);
+ eeprom->suspend_pull_downs = !!(buf[0x0A]&0x04);
eeprom->use_serial = !!(buf[0x0A] & USE_SERIAL_NUM);
eeprom->use_usb_version = !!(buf[0x0A] & USE_USB_VERSION_BIT);
free(eeprom->manufacturer);
if (manufacturer_size > 0)
{
- eeprom->manufacturer = malloc(manufacturer_size);
+ eeprom->manufacturer = (char *)malloc(manufacturer_size);
if (eeprom->manufacturer)
{
// Decode manufacturer
product_size = buf[0x11]/2;
if (product_size > 0)
{
- eeprom->product = malloc(product_size);
+ eeprom->product = (char *)malloc(product_size);
if (eeprom->product)
{
// Decode product name
serial_size = buf[0x13]/2;
if (serial_size > 0)
{
- eeprom->serial = malloc(serial_size);
+ eeprom->serial = (char *)malloc(serial_size);
if (eeprom->serial)
{
// Decode serial
else if (ftdi->type == TYPE_2232C)
{
eeprom->channel_a_type = bit2type(buf[0x00] & 0x7);
- eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP;
- eeprom->high_current_a = buf[0x00] & HIGH_CURRENT_DRIVE;
+ eeprom->channel_a_driver = !!(buf[0x00] & DRIVER_VCP);
+ eeprom->high_current_a = !!(buf[0x00] & HIGH_CURRENT_DRIVE);
eeprom->channel_b_type = buf[0x01] & 0x7;
- eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP;
- eeprom->high_current_b = buf[0x01] & HIGH_CURRENT_DRIVE;
+ eeprom->channel_b_driver = !!(buf[0x01] & DRIVER_VCP);
+ eeprom->high_current_b = !!(buf[0x01] & HIGH_CURRENT_DRIVE);
eeprom->chip = buf[0x14];
}
else if (ftdi->type == TYPE_R)
{
- /* TYPE_R flags D2XX, not VCP as all others*/
- eeprom->channel_a_driver = ~buf[0x00] & DRIVER_VCP;
- eeprom->high_current = buf[0x00] & HIGH_CURRENT_DRIVE_R;
- eeprom->external_oscillator = buf[0x00] & 0x02;
+ /* TYPE_R flags D2XX, not VCP as all others */
+ eeprom->channel_a_driver = !(buf[0x00] & DRIVER_VCP); /* note: inverted flag, use a single NOT */
+ eeprom->high_current = !!(buf[0x00] & HIGH_CURRENT_DRIVE_R);
+ eeprom->external_oscillator = !!(buf[0x00] & 0x02);
if ( (buf[0x01]&0x40) != 0x40)
fprintf(stderr,
"TYPE_R EEPROM byte[0x01] Bit 6 unexpected Endpoint size."
eeprom->chip = buf[0x16];
// Addr 0B: Invert data lines
// Works only on FT232R, not FT245R, but no way to distinguish
- eeprom->invert = buf[0x0B];
+ eeprom->invert = buf[0x0B]; /* note: not a bitflag */
// Addr 14: CBUS function: CBUS0, CBUS1
// Addr 15: CBUS function: CBUS2, CBUS3
// Addr 16: CBUS function: CBUS5
}
else if ((ftdi->type == TYPE_2232H) || (ftdi->type == TYPE_4232H))
{
- eeprom->channel_a_driver = buf[0x00] & DRIVER_VCP;
- eeprom->channel_b_driver = buf[0x01] & DRIVER_VCP;
+ eeprom->channel_a_driver = !!(buf[0x00] & DRIVER_VCP);
+ eeprom->channel_b_driver = !!(buf[0x01] & DRIVER_VCP);
if (ftdi->type == TYPE_2232H)
{
eeprom->channel_a_type = bit2type(buf[0x00] & 0x7);
eeprom->channel_b_type = bit2type(buf[0x01] & 0x7);
- eeprom->suspend_dbus7 = buf[0x01] & SUSPEND_DBUS7_BIT;
+ eeprom->suspend_dbus7 = !!(buf[0x01] & SUSPEND_DBUS7_BIT);
}
else
{
- eeprom->channel_c_driver = (buf[0x00] >> 4) & DRIVER_VCP;
- eeprom->channel_d_driver = (buf[0x01] >> 4) & DRIVER_VCP;
- eeprom->channel_a_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 0);
- eeprom->channel_b_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 1);
- eeprom->channel_c_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 2);
- eeprom->channel_d_rs485enable = buf[0x0b] & (CHANNEL_IS_RS485 << 3);
+ eeprom->channel_c_driver = !!((buf[0x00] >> 4) & DRIVER_VCP);
+ eeprom->channel_d_driver = !!((buf[0x01] >> 4) & DRIVER_VCP);
+ eeprom->channel_a_rs485enable = !!(buf[0x0b] & (CHANNEL_IS_RS485 << 0));
+ eeprom->channel_b_rs485enable = !!(buf[0x0b] & (CHANNEL_IS_RS485 << 1));
+ eeprom->channel_c_rs485enable = !!(buf[0x0b] & (CHANNEL_IS_RS485 << 2));
+ eeprom->channel_d_rs485enable = !!(buf[0x0b] & (CHANNEL_IS_RS485 << 3));
}
eeprom->chip = buf[0x18];
- eeprom->group0_drive = buf[0x0c] & DRIVE_16MA;
- eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT;
- eeprom->group0_slew = buf[0x0c] & SLOW_SLEW;
- eeprom->group1_drive = (buf[0x0c] >> 4) & 0x3;
- eeprom->group1_schmitt = (buf[0x0c] >> 4) & IS_SCHMITT;
- eeprom->group1_slew = (buf[0x0c] >> 4) & SLOW_SLEW;
- eeprom->group2_drive = buf[0x0d] & DRIVE_16MA;
- eeprom->group2_schmitt = buf[0x0d] & IS_SCHMITT;
- eeprom->group2_slew = buf[0x0d] & SLOW_SLEW;
- eeprom->group3_drive = (buf[0x0d] >> 4) & DRIVE_16MA;
- eeprom->group3_schmitt = (buf[0x0d] >> 4) & IS_SCHMITT;
- eeprom->group3_slew = (buf[0x0d] >> 4) & SLOW_SLEW;
+ eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; /* not a bitflag */
+ eeprom->group0_schmitt = !!(buf[0x0c] & IS_SCHMITT);
+ eeprom->group0_slew = !!(buf[0x0c] & SLOW_SLEW);
+ eeprom->group1_drive = (buf[0x0c] >> 4) & DRIVE_16MA; /* not a bitflag */
+ eeprom->group1_schmitt = !!((buf[0x0c] >> 4) & IS_SCHMITT);
+ eeprom->group1_slew = !!((buf[0x0c] >> 4) & SLOW_SLEW);
+ eeprom->group2_drive = buf[0x0d] & DRIVE_16MA; /* not a bitflag */
+ eeprom->group2_schmitt = !!(buf[0x0d] & IS_SCHMITT);
+ eeprom->group2_slew = !!(buf[0x0d] & SLOW_SLEW);
+ eeprom->group3_drive = (buf[0x0d] >> 4) & DRIVE_16MA; /* not a bitflag */
+ eeprom->group3_schmitt = !!((buf[0x0d] >> 4) & IS_SCHMITT);
+ eeprom->group3_slew = !!((buf[0x0d] >> 4) & SLOW_SLEW);
}
else if (ftdi->type == TYPE_232H)
{
eeprom->channel_a_type = buf[0x00] & 0xf;
- eeprom->channel_a_driver = (buf[0x00] & DRIVER_VCPH)?DRIVER_VCP:0;
- eeprom->clock_polarity = buf[0x01] & FT1284_CLK_IDLE_STATE;
- eeprom->data_order = buf[0x01] & FT1284_DATA_LSB;
- eeprom->flow_control = buf[0x01] & FT1284_FLOW_CONTROL;
- eeprom->powersave = buf[0x01] & POWER_SAVE_DISABLE_H;
- eeprom->group0_drive = buf[0x0c] & DRIVE_16MA;
- eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT;
- eeprom->group0_slew = buf[0x0c] & SLOW_SLEW;
- eeprom->group1_drive = buf[0x0d] & DRIVE_16MA;
- eeprom->group1_schmitt = buf[0x0d] & IS_SCHMITT;
- eeprom->group1_slew = buf[0x0d] & SLOW_SLEW;
+ eeprom->channel_a_driver = !!(buf[0x00] & DRIVER_VCPH);
+ eeprom->clock_polarity = !!(buf[0x01] & FT1284_CLK_IDLE_STATE);
+ eeprom->data_order = !!(buf[0x01] & FT1284_DATA_LSB);
+ eeprom->flow_control = !!(buf[0x01] & FT1284_FLOW_CONTROL);
+ eeprom->powersave = !!(buf[0x01] & POWER_SAVE_DISABLE_H);
+ eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; /* not a bitflag */
+ eeprom->group0_schmitt = !!(buf[0x0c] & IS_SCHMITT);
+ eeprom->group0_slew = !!(buf[0x0c] & SLOW_SLEW);
+ eeprom->group1_drive = buf[0x0d] & DRIVE_16MA; /* not a bitflag */
+ eeprom->group1_schmitt = !!(buf[0x0d] & IS_SCHMITT);
+ eeprom->group1_slew = !!(buf[0x0d] & SLOW_SLEW);
for(i=0; i<5; i++)
{
{
eeprom->cbus_function[i] = buf[0x1a + i] & 0xFF;
}
- eeprom->group0_drive = buf[0x0c] & 0x03;
- eeprom->group0_schmitt = buf[0x0c] & IS_SCHMITT;
- eeprom->group0_slew = buf[0x0c] & SLOW_SLEW;
- eeprom->group1_drive = (buf[0x0c] >> 4) & 0x03;
- eeprom->group1_schmitt = (buf[0x0c] >> 4) & IS_SCHMITT;
- eeprom->group1_slew = (buf[0x0c] >> 4) & SLOW_SLEW;
-
- eeprom->invert = buf[0xb];
+ eeprom->group0_drive = buf[0x0c] & DRIVE_16MA; /* not a bitflag */
+ eeprom->group0_schmitt = !!(buf[0x0c] & IS_SCHMITT);
+ eeprom->group0_slew = !!(buf[0x0c] & SLOW_SLEW);
+ eeprom->group1_drive = (buf[0x0c] >> 4) & DRIVE_16MA; /* not a bitflag */
+ eeprom->group1_schmitt = !!((buf[0x0c] >> 4) & IS_SCHMITT);
+ eeprom->group1_slew = !!((buf[0x0c] >> 4) & SLOW_SLEW);
+
+ eeprom->invert = buf[0xb]; /* not a bitflag */
}
if (verbose)
{
- char *channel_mode[] = {"UART", "FIFO", "CPU", "OPTO", "FT1284"};
+ const char *channel_mode[] = {"UART", "FIFO", "CPU", "OPTO", "FT1284"};
fprintf(stdout, "VID: 0x%04x\n",eeprom->vendor_id);
fprintf(stdout, "PID: 0x%04x\n",eeprom->product_id);
fprintf(stdout, "Release: 0x%04x\n",eeprom->release_number);
}
else if (ftdi->type == TYPE_232H)
{
- char *cbush_mux[] = {"TRISTATE","TXLED","RXLED", "TXRXLED","PWREN",
+ const char *cbush_mux[] = {"TRISTATE","TXLED","RXLED", "TXRXLED","PWREN",
"SLEEP","DRIVE_0","DRIVE_1","IOMODE","TXDEN",
"CLK30","CLK15","CLK7_5"
};
}
else if (ftdi->type == TYPE_230X)
{
- char *cbusx_mux[] = {"TRISTATE","TXLED","RXLED", "TXRXLED","PWREN",
+ const char *cbusx_mux[] = {"TRISTATE","TXLED","RXLED", "TXRXLED","PWREN",
"SLEEP","DRIVE_0","DRIVE_1","IOMODE","TXDEN",
"CLK24","CLK12","CLK6","BAT_DETECT","BAT_DETECT#",
"I2C_TXE#", "I2C_RXF#", "VBUS_SENSE", "BB_WR#",
if (ftdi->type == TYPE_R)
{
- char *cbus_mux[] = {"TXDEN","PWREN","RXLED", "TXLED","TX+RXLED",
+ const char *cbus_mux[] = {"TXDEN","PWREN","RXLED", "TXLED","TX+RXLED",
"SLEEP","CLK48","CLK24","CLK12","CLK6",
"IOMODE","BB_WR","BB_RD"
};
- char *cbus_BB[] = {"RXF","TXE","RD", "WR"};
+ const char *cbus_BB[] = {"RXF","TXE","RD", "WR"};
if (eeprom->invert)
print_inverted_bits(eeprom->invert);
*/
int ftdi_read_eeprom_location (struct ftdi_context *ftdi, int eeprom_addr, unsigned short *eeprom_val)
{
+ unsigned char buf[2];
+
if (ftdi == NULL || ftdi->usb_dev == NULL)
ftdi_error_return(-2, "USB device unavailable");
- if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, (unsigned char *)eeprom_val, 2, ftdi->usb_read_timeout) != 2)
+ if (libusb_control_transfer(ftdi->usb_dev, FTDI_DEVICE_IN_REQTYPE, SIO_READ_EEPROM_REQUEST, 0, eeprom_addr, buf, 2, ftdi->usb_read_timeout) != 2)
ftdi_error_return(-1, "reading eeprom failed");
+ *eeprom_val = (0xff & buf[0]) | (buf[1] << 8);
+
return 0;
}
\retval Pointer to error string
*/
-char *ftdi_get_error_string (struct ftdi_context *ftdi)
+const char *ftdi_get_error_string (struct ftdi_context *ftdi)
{
if (ftdi == NULL)
return "";
git://developer.intra2net.com / libftdi / blobdiff