What is the UART port on the tm4c123gxl Launchpad?
On the EK-TM4C123GXL LaunchPad, the connection appears as UART0 (PA0-PA1). On the host PC, it appears as a COM (/dev/ttyACM0) port and will work with communication software on the PC such as a terminal emulator (gtkterm, PuTTY, minicom, etc).
How many UART ports does Tiva C Launchpad have?
As we mentioned earlier, Tiva C launchpad has TM4C123GH6PM Microcontroller. This TI microcontroller supports 8 UART ports, starting from UART0 to UART7. On top of that each module has a separate 4 bytes transmit and receive FIFO storage that reduces the CPU interrupt service load. The following table provides the pinout of each UART port:
Where does the uart0 appear on a launchpad?
When the USB cable connects the EK-TM4C123GXL LaunchPad board, the device driver at the host PC establishes a virtual connection between the PC and the UART0 of the TM4C123GH6PM micro controller. On the EK-TM4C123GXL LaunchPad, the connection appears as UART0 (PA0-PA1).
What kind of microcontroller is Tiva tm4c123g Launchpad?
The TM4C123GH6PM is a 32-bitARM Cortex-M4-basedmicrocontroller with 256-kBFlash memory, 32- kB SRAM, and 80-MHzoperation; USB host, device, and OTG connectivity; a Hibernation module and PWM; and a wide range of other peripherals. See the TM4C123GH6PM microcontroller data sheet (literature number SPMS376) for complete device details.
How to clear the receive interrupt of uart5?
Bit 5 (RXIS) of UARTICR register is Receive Interrupt Clear flag. When UART receiver interrupt occurs, the programmer should explicitly clear the RXIS bit. Writing a 1 to this bit clears the RXRIS bit in the UARTRIS register and the RXMIS bit in the UARTMIS register. This line clears the receive interrupt of UART5:
How does UART interrupt work on Tiva C Launchpad?
We will use Putty as a terminal to send messages from the computer to the Tiva C launchpad. If a received character on the RX5 pin of UART5 module is ‘A’, LED will turn on and if the received message is ‘B’, LED will turn off. For any other character, LED will retain its current state.
How are two pins used in UART communication?
As its name suggests, it is an asynchronous communication protocol. Therefore, no clock signal is required for synchronization between two devices. Only two pins are used to transfer and receive data such as a transmit pin (Tx) and a receiver pin (Rx).