stlink: add stlink_api cmd

[openocd.git] / src / jtag / drivers / stlink_usb.c

diff --git a/src/jtag/drivers/stlink_usb.c b/src/jtag/drivers/stlink_usb.c
index 1de42efb92790a7e73a5fcc6e656e7c40d668931..b4944f56cd77e98ce3d125de7745bc6ab8a54c32 100644 (file)
--- a/src/jtag/drivers/stlink_usb.c
+++ b/src/jtag/drivers/stlink_usb.c
@@ -48,7 +48,7 @@
 #define STLINK_CMD_SIZE_V1     (10)
 
 enum stlink_jtag_api_version {
-       STLINK_JTAG_API_V1 = 0,
+       STLINK_JTAG_API_V1 = 1,
        STLINK_JTAG_API_V2,
 };
 
@@ -1132,6 +1132,7 @@ static int stlink_usb_open(struct stlink_interface_param_s *param, void **fd)
 {
        int err;
        struct stlink_usb_handle_s *h;
+       enum stlink_jtag_api_version api;
 
        LOG_DEBUG("stlink_usb_open");
 
@@ -1213,8 +1214,17 @@ static int stlink_usb_open(struct stlink_interface_param_s *param, void **fd)
                return err;
        }
 
+       api = h->version.jtag_api_max;
+
+       /* check that user has not requested certain api version
+        * and if they have check it is supported */
+       if ((param->api != 0) && (param->api <= h->version.jtag_api_max)) {
+               api = param->api;
+               LOG_INFO("using stlink api v%d", api);
+       }
+
        /* set the used jtag api, this will default to the newest supported version */
-       h->jtag_api = h->version.jtag_api_max;
+       h->jtag_api = api;
 
        /* initialize the debug hardware */
        err = stlink_usb_init_mode(h);