#include <stdint.h>
#include <time.h>
#include <sys/types.h>
-#include <libusb-1.0/libusb.h>
+#include <libusb.h>
#include "stlink-common.h"
#include "stlink-usb.h"
}
-/* Search for a STLINK device, either any or teh one with the given PID
- * Return the protocoll version
- */
-static int is_stlink_device(libusb_device * dev, uint16_t pid) {
- struct libusb_device_descriptor desc;
- int version;
-
- if (libusb_get_device_descriptor(dev, &desc))
- return 0;
-
- if (desc.idVendor != USB_ST_VID)
- return 0;
-
- if ((desc.idProduct != USB_STLINK_32L_PID) &&
- (desc.idProduct != USB_STLINK_PID ))
- return 0;
-
- if(pid && (pid != desc.idProduct))
- return 0;
- if (desc.idProduct == USB_STLINK_PID )
- version = 1;
- else
- version = 2;
-
- return version;
-}
-
static int fill_command
(stlink_t * sl, enum SCSI_Generic_Direction dir, uint32_t len) {
struct stlink_libusb * const slu = sl->backend_data;
}
}
+uint32_t _stlink_usb_read_debug32(stlink_t *sl, uint32_t addr) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const rdata = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ const int rep_len = 8;
+
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_JTAG_READDEBUG_32BIT;
+ write_uint32(&cmd[i], addr);
+ size = send_recv(slu, 1, cmd, slu->cmd_len, rdata, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return 0;
+ }
+ return read_uint32(rdata, 4);
+}
+
+void _stlink_usb_write_debug32(stlink_t *sl, uint32_t addr, uint32_t data) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const rdata = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ const int rep_len = 2;
+
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_JTAG_WRITEDEBUG_32BIT;
+ write_uint32(&cmd[i], addr);
+ write_uint32(&cmd[i + 4], data);
+ size = send_recv(slu, 1, cmd, slu->cmd_len, rdata, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+}
+
void _stlink_usb_write_mem32(stlink_t *sl, uint32_t addr, uint16_t len) {
struct stlink_libusb * const slu = sl->backend_data;
unsigned char* const data = sl->q_buf;
}
+void _stlink_usb_jtag_reset(stlink_t * sl, int value) {
+ struct stlink_libusb * const slu = sl->backend_data;
+ unsigned char* const data = sl->q_buf;
+ unsigned char* const cmd = sl->c_buf;
+ ssize_t size;
+ int rep_len = 2;
+ int i = fill_command(sl, SG_DXFER_FROM_DEV, rep_len);
+
+ cmd[i++] = STLINK_DEBUG_COMMAND;
+ cmd[i++] = STLINK_JTAG_DRIVE_NRST;
+ cmd[i++] = (value)?0:1;
+
+ size = send_recv(slu, 1, cmd, slu->cmd_len, data, rep_len);
+ if (size == -1) {
+ printf("[!] send_recv\n");
+ return;
+ }
+}
+
+
void _stlink_usb_step(stlink_t* sl) {
struct stlink_libusb * const slu = sl->backend_data;
unsigned char* const data = sl->q_buf;
_stlink_usb_exit_dfu_mode,
_stlink_usb_core_id,
_stlink_usb_reset,
+ _stlink_usb_jtag_reset,
_stlink_usb_run,
_stlink_usb_status,
_stlink_usb_version,
+ _stlink_usb_read_debug32,
_stlink_usb_read_mem32,
+ _stlink_usb_write_debug32,
_stlink_usb_write_mem32,
_stlink_usb_write_mem8,
_stlink_usb_read_all_regs,
struct stlink_libusb* slu = NULL;
int error = -1;
libusb_device** devs = NULL;
- libusb_device* dev;
- ssize_t i;
- ssize_t count;
int config;
- char *iSerial = NULL;
sl = malloc(sizeof (stlink_t));
slu = malloc(sizeof (struct stlink_libusb));
sl->core_stat = STLINK_CORE_STAT_UNKNOWN;
- /* flash memory settings */
- sl->flash_base = STM32_FLASH_BASE;
- sl->flash_size = STM32_FLASH_SIZE;
- sl->flash_pgsz = STM32_FLASH_PGSZ;
-
- /* system memory */
- sl->sys_base = STM32_SYSTEM_BASE;
- sl->sys_size = STM32_SYSTEM_SIZE;
-
- /* sram memory settings */
- sl->sram_base = STM32_SRAM_BASE;
- sl->sram_size = STM32L_SRAM_SIZE;
-
if (libusb_init(&(slu->libusb_ctx))) {
WLOG("failed to init libusb context, wrong version of libraries?\n");
goto on_error;
slu->usb_handle = libusb_open_device_with_vid_pid(slu->libusb_ctx, USB_ST_VID, USB_STLINK_32L_PID);
if (slu->usb_handle == NULL) {
// TODO - free usb context too...
- free(slu);
WLOG("Couldn't find any ST-Link/V2 devices");
- return NULL;
+ goto on_error;
}
if (libusb_kernel_driver_active(slu->usb_handle, 0) == 1) {
r = libusb_detach_kernel_driver(slu->usb_handle, 0);
if (r<0) {
WLOG("libusb_detach_kernel_driver(() error %s\n", strerror(-r));
+ goto on_libusb_error;
}
- goto on_libusb_error;
}
if (libusb_get_configuration(slu->usb_handle, &config)) {
slu->cmd_len = (slu->protocoll == 1)? STLINK_SG_SIZE: STLINK_CMD_SIZE;
/* success */
+
if (stlink_current_mode(sl) == STLINK_DEV_DFU_MODE) {
ILOG("-- exit_dfu_mode\n");
stlink_exit_dfu_mode(sl);
}
+
+ if (stlink_current_mode(sl) != STLINK_DEV_DEBUG_MODE) {
+ stlink_enter_swd_mode(sl);
+ }
+
+ stlink_reset(sl);
+ stlink_load_device_params(sl);
stlink_version(sl);
+
error = 0;
on_libusb_error:
return sl;
on_error:
+ if( slu->libusb_ctx)
+ libusb_exit(slu->libusb_ctx);
if (sl != NULL) free(sl);
if (slu != NULL) free(slu);
return 0;