diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jtag/tcl.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/jtag/tcl.c b/src/jtag/tcl.c index 3e6074b8..267802ed 100644 --- a/src/jtag/tcl.c +++ b/src/jtag/tcl.c @@ -40,6 +40,8 @@ #include <strings.h> #endif +#include <helper/time_support.h> + /** * @file * Holds support for accessing JTAG-specific mechanisms from TCl scripts. @@ -1266,6 +1268,46 @@ COMMAND_HANDLER(handle_jtag_flush_queue_sleep) return ERROR_OK; } +COMMAND_HANDLER(handle_wait_srst_deassert) +{ + if (CMD_ARGC != 1) + return ERROR_COMMAND_SYNTAX_ERROR; + + int timeout_ms; + COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], timeout_ms); + if ((timeout_ms <= 0) || (timeout_ms > 100000)) + { + LOG_ERROR("Timeout must be an integer between 0 and 100000"); + return ERROR_FAIL; + } + + LOG_USER("Waiting for srst assert + deassert for at most %dms", timeout_ms); + int asserted_yet; + long long then = timeval_ms(); + while (jtag_srst_asserted(&asserted_yet) == ERROR_OK) + { + if ((timeval_ms() - then) > timeout_ms) + { + LOG_ERROR("Timed out"); + return ERROR_FAIL; + } + if (asserted_yet) + break; + } + while (jtag_srst_asserted(&asserted_yet) == ERROR_OK) + { + if ((timeval_ms() - then) > timeout_ms) + { + LOG_ERROR("Timed out"); + return ERROR_FAIL; + } + if (!asserted_yet) + break; + } + + return ERROR_OK; +} + static const struct command_registration jtag_command_handlers[] = { @@ -1358,6 +1400,15 @@ static const struct command_registration jtag_command_handlers[] = { .usage = "['short'|'long']", }, { + .name = "wait_srst_deassert", + .handler = handle_wait_srst_deassert, + .mode = COMMAND_ANY, + .help = "Wait for an SRST deassert. " + "Useful for cases where you need something to happen within ms " + "of an srst deassert. Timeout in ms ", + .usage = "ms", + }, + { .name = "jtag", .mode = COMMAND_ANY, .help = "perform jtag tap actions", |