stlink-dap: add 'cmd' to send arbitrary commands

[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 4bd07b49f39d18b73697b9b6a447d5a7fc2f071a..a523708638654a27318612d670f3c25f43cb61cd 100644 (file)
--- a/src/jtag/drivers/stlink_usb.c
+++ b/src/jtag/drivers/stlink_usb.c
@@ -4222,6 +4222,43 @@ COMMAND_HANDLER(stlink_dap_backend_command)
        return ERROR_OK;
 }
 
        return ERROR_OK;
 }
 

+#define BYTES_PER_LINE 16
+COMMAND_HANDLER(stlink_dap_cmd_command)
+{
+       unsigned int rx_n, tx_n;
+       struct stlink_usb_handle_s *h = stlink_dap_handle;
+
+       if (CMD_ARGC < 2)
+               return ERROR_COMMAND_SYNTAX_ERROR;
+
+       COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], rx_n);
+       tx_n = CMD_ARGC - 1;
+       if (tx_n > STLINK_SG_SIZE || rx_n > STLINK_DATA_SIZE) {
+               LOG_ERROR("max %x byte sent and %d received", STLINK_SG_SIZE, STLINK_DATA_SIZE);
+               return ERROR_COMMAND_SYNTAX_ERROR;
+       }
+
+       stlink_usb_init_buffer(h, h->rx_ep, rx_n);
+
+       for (unsigned int i = 0; i < tx_n; i++) {
+               uint8_t byte;
+               COMMAND_PARSE_NUMBER(u8, CMD_ARGV[i + 1], byte);
+               h->cmdbuf[h->cmdidx++] = byte;
+       }
+
+       int retval = stlink_usb_xfer_noerrcheck(h, h->databuf, rx_n);
+       if (retval != ERROR_OK) {
+               LOG_ERROR("Error %d", retval);
+               return retval;
+       }
+
+       for (unsigned int i = 0; i < rx_n; i++)
+               command_print_sameline(CMD, "0x%02x%c", h->databuf[i],
+                       ((i == (rx_n - 1)) || ((i % BYTES_PER_LINE) == (BYTES_PER_LINE - 1))) ? '\n' : ' ');
+
+       return ERROR_OK;
+}
+

 /** */
 static const struct command_registration stlink_dap_subcommand_handlers[] = {
        {
 /** */
 static const struct command_registration stlink_dap_subcommand_handlers[] = {
        {


@@ -4245,6 +4282,13 @@ static const struct command_registration stlink_dap_subcommand_handlers[] = {
                .help = "select which ST-Link backend to use",
                .usage = "usb | tcp [port]",
        },
                .help = "select which ST-Link backend to use",
                .usage = "usb | tcp [port]",
        },

+       {
+               .name = "cmd",
+               .handler = stlink_dap_cmd_command,
+               .mode = COMMAND_EXEC,
+               .help = "send arbitrary command",
+               .usage = "rx_n (tx_byte)+",
+       },

        COMMAND_REGISTRATION_DONE
 };
 
        COMMAND_REGISTRATION_DONE
 };