I had a look around the site and did not find an answer. What is the maximum baud rate for serial communications? I need to send a lot of data at a high speed over USB. I'm going to use the built in USB or FTDI serial to USB converter chips. I did some experimenting and it seems like the maximum baud rate that the mBed supports is 115200 (v24 of library). Serial pc(USBTX, USBRX); pc.baud(115200); I want to send at USB speeds of at least 1.5Mbps. Is this even possible with the mBed over serial?

1. List Of Baud Rates

What is the maximum baud rate? XM: Historic starting near teletype age. 110baud is very early modems, rest came as multiples of 300baud later. I've seen 150 but not 200. No reason can't have 200, someone would just need to modify the code with that definition, but if you check things like Win8 Com Port settings you won't see 200 as it isn't a standard.

While most MCU these days allow setting any baud rate, many UART chips had a register for selecting only specific baud rates. Jivitesh: Hope you resolved this. Define problems: no connect, no data, totally garbage data, occasional errors. Some possibilities: too much frequency error on those other baud rates causing glitches (May Depend on CPU crystal divisible frequencies), does your MCU divide the clock before sending to UART module thus reducing resolution/options, what UART baud rates are supported in your hardware? XM: Historic starting near teletype age.

110baud is very early modems, rest came as multiples of 300baud later. I've seen 150 but not 200.

List Of Baud Rates

No reason can't have 200, someone would just need to modify the code with that definition, but if you check things like Win8 Com Port settings you won't see 200 as it isn't a standard. While most MCU these days allow setting any baud rate, many UART chips had a register for selecting only specific baud rates. Jivitesh: Hope you resolved this. Define problems: no connect, no data, totally garbage data, occasional errors. Some possibilities: too much frequency error on those other baud rates causing glitches (May Depend on CPU crystal divisible frequencies), does your MCU divide the clock before sending to UART module thus reducing resolution/options, what UART baud rates are supported in your hardware? FYI: Max baud rate for UART depends on frequency error between crystals and chosen baud rates at both ends.

If the MCU crystal at either end isn't an exact multiple of the selected baud rate then some baudrates will have more error than others and just fail, that's just math. Check: CrystalFrequency/baudrate give an integer that MCU can program as a divider, or is there a significant remainder? Do for both ends. If you have an oscilloscope then measure the actual baudrate transmitted by either end to compare your requested baudrate versus actual.

To be compatible with other people's hardware don't push it. FYI: Max baud rate for UART depends on frequency error between crystals and chosen baud rates at both ends. If the MCU crystal at either end isn't an exact multiple of the selected baud rate then some baudrates will have more error than others and just fail, that's just math. Check: CrystalFrequency/baudrate give an integer that MCU can program as a divider, or is there a significant remainder? Do for both ends.

If you have an oscilloscope then measure the actual baudrate transmitted by either end to compare your requested baudrate versus actual. To be compatible with other people's hardware don't push it. The Standard baud rates Comes from the sixties. The baudrates are multiply from 75 baud 75.1 = 75 baud 75.2 = 150 baud 75.4 = 300 baud. The 110 baud comes from the old acoustic coupler modem But there are not common baudrates like MIDI with a baud rate of 31250. The max baud rate of the most serial ports and usb to serial ports is 115200. 230400, 460800 and 921600 is not availlable at the most usb to serial ports.

Older serial ports goes up to 57600 baud But for long cables the max baud rates is lower. Then it depends on the voltage level. Valid signals detected +3V and. The Standard baud rates Comes from the sixties. The baudrates are multiply from 75 baud 75.1 = 75 baud 75.2 = 150 baud 75.4 = 300 baud. The 110 baud comes from the old acoustic coupler modem But there are not common baudrates like MIDI with a baud rate of 31250. The max baud rate of the most serial ports and usb to serial ports is 115200.

230400, 460800 and 921600 is not availlable at the most usb to serial ports. Older serial ports goes up to 57600 baud But for long cables the max baud rates is lower. Then it depends on the voltage level. Valid signals detected +3V and.