* Copyright (C) 2004, 2006 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
jtag_interface_t ft2232_interface =
{
-
.name = "ft2232",
-
.execute_queue = ft2232_execute_queue,
-
.speed = ft2232_speed,
- .speed_div = ft2232_speed_div,
- .khz = ft2232_khz,
-
+ .speed_div = ft2232_speed_div,
+ .khz = ft2232_khz,
.register_commands = ft2232_register_commands,
.init = ft2232_init,
.quit = ft2232_quit,
int ft2232_speed_div(int speed, int *khz)
{
- /*
- * Take a look in the FT2232 manual,
- * AN2232C-01 Command Processor for
- * MPSSE and MCU Host Bus. Chapter 3.8
- */
- *khz = 6000 / (1+speed);
-
+ /* Take a look in the FT2232 manual,
+ * AN2232C-01 Command Processor for
+ * MPSSE and MCU Host Bus. Chapter 3.8 */
+
+ *khz = 6000 / (1+speed);
+
return ERROR_OK;
}
int ft2232_khz(int khz, int *jtag_speed)
{
- /*
- * Take a look in the FT2232 manual,
- * AN2232C-01 Command Processor for
- * MPSSE and MCU Host Bus. Chapter 3.8
- *
- * We will calc here with a multiplier
- * of 10 for better rounding later.
- */
-
- /* Calc speed, (6000 / khz) - 1 */
- /* Use 65000 for better rounding */
- *jtag_speed = (60000 / khz) - 10;
-
- /* Add 0.9 for rounding */
- *jtag_speed += 9;
-
- /* Calc real speed */
- *jtag_speed = *jtag_speed / 10;
-
- /* Check if speed is greater than 0 */
- if (*jtag_speed < 0)
- {
- *jtag_speed = 0;
- }
-
+ if (khz==0)
+ {
+ LOG_ERROR("RCLK not supported");
+ return ERROR_FAIL;
+ }
+ /* Take a look in the FT2232 manual,
+ * AN2232C-01 Command Processor for
+ * MPSSE and MCU Host Bus. Chapter 3.8
+ *
+ * We will calc here with a multiplier
+ * of 10 for better rounding later. */
+
+ /* Calc speed, (6000 / khz) - 1 */
+ /* Use 65000 for better rounding */
+ *jtag_speed = (60000 / khz) - 10;
+
+ /* Add 0.9 for rounding */
+ *jtag_speed += 9;
+
+ /* Calc real speed */
+ *jtag_speed = *jtag_speed / 10;
+
+ /* Check if speed is greater than 0 */
+ if (*jtag_speed < 0)
+ {
+ *jtag_speed = 0;
+ }
+
+ /* Check max value */
+ if (*jtag_speed > 0xFFFF)
+ {
+ *jtag_speed = 0xFFFF;
+ }
+
return ERROR_OK;
}
-
-
int ft2232_register_commands(struct command_context_s *cmd_ctx)
{
register_command(cmd_ctx, NULL, "ft2232_device_desc", ft2232_handle_device_desc_command,
- COMMAND_CONFIG, NULL);
+ COMMAND_CONFIG, "the USB device description of the FTDI FT2232 device");
register_command(cmd_ctx, NULL, "ft2232_serial", ft2232_handle_serial_command,
- COMMAND_CONFIG, NULL);
+ COMMAND_CONFIG, "the serial number of the FTDI FT2232 device");
register_command(cmd_ctx, NULL, "ft2232_layout", ft2232_handle_layout_command,
- COMMAND_CONFIG, NULL);
+ COMMAND_CONFIG, "the layout of the FT2232 GPIO signals used to control output-enables and reset signals");
register_command(cmd_ctx, NULL, "ft2232_vid_pid", ft2232_handle_vid_pid_command,
- COMMAND_CONFIG, NULL);
+ COMMAND_CONFIG, "the vendor ID and product ID of the FTDI FT2232 device");
register_command(cmd_ctx, NULL, "ft2232_latency", ft2232_handle_latency_command,
- COMMAND_CONFIG, NULL);
+ COMMAND_CONFIG, "set the FT2232 latency timer to a new value");
return ERROR_OK;
}
if ((retval = ft2232_write(ft2232_buffer, ft2232_buffer_size, &bytes_written)) != ERROR_OK)
{
LOG_ERROR("couldn't write MPSSE commands to FT2232");
- exit(-1);
+ return retval;
}
#ifdef _DEBUG_USB_IO_
if ((retval = ft2232_read(ft2232_buffer, ft2232_expect_read, &bytes_read)) != ERROR_OK)
{
LOG_ERROR("couldn't read from FT2232");
- exit(-1);
+ return retval;
}
#ifdef _DEBUG_USB_IO_
high_output |= nTRST;
}
- if (srst == 1)
- {
- high_output |= nSRST;
- }
- else if (srst == 0)
- {
- high_output &= ~nSRST;
- }
-
- /* command "set data bits high byte" */
- BUFFER_ADD = 0x82;
- BUFFER_ADD = high_output;
- BUFFER_ADD = high_direction;
- LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
+ if (srst == 1)
+ {
+ high_output |= nSRST;
+ }
+ else if (srst == 0)
+ {
+ high_output &= ~nSRST;
+ }
+
+ /* command "set data bits high byte" */
+ BUFFER_ADD = 0x82;
+ BUFFER_ADD = high_output;
+ BUFFER_ADD = high_direction;
+ LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
}
void flyswatter_reset(int trst, int srst)
low_output |= nTRST;
}
- if (srst == 1)
- {
- low_output |= nSRST;
- }
- else if (srst == 0)
- {
- low_output &= ~nSRST;
- }
-
- /* command "set data bits low byte" */
- BUFFER_ADD = 0x80;
- BUFFER_ADD = low_output;
- BUFFER_ADD = low_direction;
- LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
+ if (srst == 1)
+ {
+ low_output |= nSRST;
+ }
+ else if (srst == 0)
+ {
+ low_output &= ~nSRST;
+ }
+
+ /* command "set data bits low byte" */
+ BUFFER_ADD = 0x80;
+ BUFFER_ADD = low_output;
+ BUFFER_ADD = low_direction;
+ LOG_DEBUG("trst: %i, srst: %i, low_output: 0x%2.2x, low_direction: 0x%2.2x", trst, srst, low_output, low_direction);
}
void turtle_reset(int trst, int srst)
high_output |= nTRST;
}
- if (srst == 1)
- {
- high_output &= ~nSRST;
- }
- else if (srst == 0)
- {
- high_output |= nSRST;
- }
+ if (srst == 1)
+ {
+ high_output &= ~nSRST;
+ }
+ else if (srst == 0)
+ {
+ high_output |= nSRST;
+ }
/* command "set data bits high byte" */
BUFFER_ADD = 0x82;
high_output |= nTRST;
}
- if (srst == 1)
- {
- low_output &= ~nSRST;
- }
- else if (srst == 0)
- {
- low_output |= nSRST;
- }
+ if (srst == 1)
+ {
+ low_output &= ~nSRST;
+ }
+ else if (srst == 0)
+ {
+ low_output |= nSRST;
+ }
/* command "set data bits low byte" */
BUFFER_ADD = 0x80;
u8 latency_timer;
LOG_DEBUG("'ft2232' interface using libftdi with '%s' layout (%4.4x:%4.4x)",
- ft2232_layout, vid, pid);
+ ft2232_layout, vid, pid);
if (ftdi_init(&ftdic) < 0)
return ERROR_JTAG_INIT_FAILED;
/* context, vendor id, product id */
if (ftdi_usb_open_desc(&ftdic, vid, pid, ft2232_device_desc,
- ft2232_serial) < 0) {
+ ft2232_serial) < 0) {
if (more)
LOG_WARNING("unable to open ftdi device (trying more): %s",
- ftdic.error_str);
+ ftdic.error_str);
else
LOG_ERROR("unable to open ftdi device: %s", ftdic.error_str);
*try_more = 1;
#if BUILD_FT2232_FTD2XX == 1
retval = ft2232_init_ftd2xx(ft2232_vid[i], ft2232_pid[i],
- more, &try_more);
+ more, &try_more);
#elif BUILD_FT2232_LIBFTDI == 1
retval = ft2232_init_libftdi(ft2232_vid[i], ft2232_pid[i],
- more, &try_more);
+ more, &try_more);
#endif
if (retval >= 0)
break;
BUFFER_ADD = high_direction;
}
-
int ft2232_quit(void)
{
#if BUILD_FT2232_FTD2XX == 1
if (argc > MAX_USB_IDS*2) {
LOG_WARNING("ignoring extra IDs in ft2232_vid_pid "
- "(maximum is %d pairs)", MAX_USB_IDS);
+ "(maximum is %d pairs)", MAX_USB_IDS);
argc = MAX_USB_IDS*2;
}
if (argc < 2 || (argc & 1))
return ERROR_OK;
}
-
-
projects / fw / openocd / blobdiff