esp_timer_get_time returns 64-bit time since startup, in microseconds. Oh, now that IS useful! - now I wish I hadn't just spent the last hour implementing the exact same thing :) By my calculations that should last for about 584,000 years before overflow. Should be sufficient for most IoT applicati...

In your original post you asked if we waited or returned immediately when the "length" bytes were available. I think you shouldn't discount a third option which I believe may also exist ... that it returns immediately if LESS than "length" bytes are available but at least 1 byte. For example, if th...

Hi, int uart_read_bytes(uart_port_t uart_num, uint8_t *buf, uint32_t length, TickType_t ticks_to_wait) Docs is not clear enough, this function return only after that ticks_to_wait (aka 20 / portTICK_RATE_MS)[/code] are passed? or can return as soon length bytes are available (before that ticks_to_wa...