ESP8266 Developer Zone

Hi,

my application runs on an external µCOM which uses 1.843200MHZ as system clock. I have to go that route for two reasons:
1) UART Baud rate accuracy
2) Power consumption.

Now I have treid receiving the UART at 19200 in several ways (Interrupt and direct loop) however the application looses some characters sometimes. At 16mhz, no characters are lost no matter how I do that.

One question: is there a uart command to set a character delay on transmit?

Thanks in advance

No, the AT command set does not allow that setting.
The best you can do is lower the baud rate to 9600 maybe. If your uC is running at <8MHz and has no UART FIFO, then you are bound to miss packets!
This is because the ESP8266 UART has DMA + FIFO, and it transfers bytes out with almost zero loading time. That can overrun most small 8-bit micros.