diff options
| -rw-r--r-- | src/jtag/drivers/cmsis_dap.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/jtag/drivers/cmsis_dap.c b/src/jtag/drivers/cmsis_dap.c index 0c42a7f..1e7a851 100644 --- a/src/jtag/drivers/cmsis_dap.c +++ b/src/jtag/drivers/cmsis_dap.c @@ -1001,12 +1001,14 @@ static void cmsis_dap_swd_queue_cmd(uint8_t cmd, uint32_t *dst, uint32_t data) block_cmd); unsigned int resp_size = cmsis_dap_tfer_resp_size(write_count, read_count, block_cmd); + unsigned int max_transfer_count = block_cmd ? 65535 : 255; /* Does the DAP Transfer command and the expected response fit into one packet? * Run the queue also before a targetsel - it cannot be queued */ if (cmd_size > tfer_max_command_size || resp_size > tfer_max_response_size - || targetsel_cmd) { + || targetsel_cmd + || write_count + read_count > max_transfer_count) { if (cmsis_dap_handle->pending_fifo_block_count) cmsis_dap_swd_read_process(cmsis_dap_handle, 0); |