sscanf(): NuttX libc tried to guess how many characters to parse, extracted...

sscanf(): NuttX libc tried to guess how many characters to parse, extracted them into a buffer, then ran strtol() on that buffer. That guess is often wrong. A better approach would be to call strtol() directly on the input data, using the endptr return value to determine how many characters to skip after parsing.  From Kosma Moczek