UART_ints

Readme
 
This is a C language project demonstrates universal asynchronous receiver transmiter (UART) serial input/output using UART0. The project uses interrupt synchronization. FIFO queues are used to buffer data from foreground (main) and background (UART0 ISR). UART0 is attached to the PC using the USB cable, creating a virtual serial port on the PC. main1 tests UART character input/output. main demonstrates printf. Sorry, scanf does not work. It input data from the terminal you can use functions like UART_InChar, UART_InString, UART_InUDec, and UART_InUHex. When running this project, the USB cable must be attached to the PC and a terminal program (Putty or CCS terminal) must be opened with a baud rate of 115200 bits/sec.
 
Derived from Texas Instrument code

  • uart_rw_multibyte_fifo_poll_LP_MSPM0G3507_nortos_ticlang
  • uart_echo_interrupts_standby_LP_MSPM0G3507_nortos_ticlang
  • gpio_toggle_output_LP_MSPM0G3507_nortos_ticlang

Hardware Required

  • MSPM0G3507 LaunchPad™ Development Kit (LP-MSPM0G3507)

Pin assignments
  • Serial TxD: PA10 is UART0 Tx (MSPM0 to PC) index 20 in IOMUX PINCM table
  • Serial RxD: PA11 is UART0 Rx (PC to MSPM0) index 21 in IOMUX PINCM table
  • Output: PA0 is red LED1, index 0 in IOMUX PINCM table
LaunchPad Jumpers
  • Remove J16 J17 J18: Disconnects light sensor from the microcontroller PA22 PA27 PA26
  • J4: Connects PA0 to red LED
  • J21: Connects PA10 to XDS_UART
  • J22: Connects PA11 to XDS_UART

Simplified BSD License (FreeBSD License) Copyright © 2025, Jonathan Valvano, All rights reserved.
 
Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
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For more information, see http://users.ece.utexas.edu/~valvano/.