SPMA086 October   2022 TM4C1230C3PM , TM4C1230C3PM , TM4C1230D5PM , TM4C1230D5PM , TM4C1230E6PM , TM4C1230E6PM , TM4C1230H6PM , TM4C1230H6PM , TM4C1231C3PM , TM4C1231C3PM , TM4C1231D5PM , TM4C1231D5PM , TM4C1231D5PZ , TM4C1231D5PZ , TM4C1231E6PM , TM4C1231E6PM , TM4C1231E6PZ , TM4C1231E6PZ , TM4C1231H6PGE , TM4C1231H6PGE , TM4C1231H6PM , TM4C1231H6PM , TM4C1231H6PZ , TM4C1231H6PZ , TM4C1232C3PM , TM4C1232C3PM , TM4C1232D5PM , TM4C1232D5PM , TM4C1232E6PM , TM4C1232E6PM , TM4C1232H6PM , TM4C1232H6PM , TM4C1233C3PM , TM4C1233C3PM , TM4C1233D5PM , TM4C1233D5PM , TM4C1233D5PZ , TM4C1233D5PZ , TM4C1233E6PM , TM4C1233E6PM , TM4C1233E6PZ , TM4C1233E6PZ , TM4C1233H6PGE , TM4C1233H6PGE , TM4C1233H6PM , TM4C1233H6PM , TM4C1233H6PZ , TM4C1233H6PZ , TM4C1236D5PM , TM4C1236D5PM , TM4C1236E6PM , TM4C1236E6PM , TM4C1236H6PM , TM4C1236H6PM , TM4C1237D5PM , TM4C1237D5PM , TM4C1237D5PZ , TM4C1237D5PZ , TM4C1237E6PM , TM4C1237E6PM , TM4C1237E6PZ , TM4C1237E6PZ , TM4C1237H6PGE , TM4C1237H6PGE , TM4C1237H6PM , TM4C1237H6PM , TM4C1237H6PZ , TM4C1237H6PZ , TM4C123AE6PM , TM4C123AE6PM , TM4C123AH6PM , TM4C123AH6PM , TM4C123BE6PM , TM4C123BE6PM , TM4C123BE6PZ , TM4C123BE6PZ , TM4C123BH6PGE , TM4C123BH6PGE , TM4C123BH6PM , TM4C123BH6PM , TM4C123BH6PZ , TM4C123BH6PZ , TM4C123BH6ZRB , TM4C123BH6ZRB , TM4C123FE6PM , TM4C123FE6PM , TM4C123FH6PM , TM4C123FH6PM , TM4C123GE6PM , TM4C123GE6PM , TM4C123GE6PZ , TM4C123GE6PZ , TM4C123GH6PGE , TM4C123GH6PGE , TM4C123GH6PM , TM4C123GH6PM , TM4C123GH6PZ , TM4C123GH6PZ , TM4C123GH6ZRB , TM4C123GH6ZRB , TM4C123GH6ZXR , TM4C123GH6ZXR , TM4C1290NCPDT , TM4C1290NCPDT , TM4C1290NCZAD , TM4C1290NCZAD , TM4C1292NCPDT , TM4C1292NCPDT , TM4C1292NCZAD , TM4C1292NCZAD , TM4C1294KCPDT , TM4C1294KCPDT , TM4C1294NCPDT , TM4C1294NCPDT , TM4C1294NCZAD , TM4C1294NCZAD , TM4C1297NCZAD , TM4C1297NCZAD , TM4C1299KCZAD , TM4C1299KCZAD , TM4C1299NCZAD , TM4C1299NCZAD , TM4C129CNCPDT , TM4C129CNCPDT , TM4C129CNCZAD , TM4C129CNCZAD , TM4C129DNCPDT , TM4C129DNCPDT , TM4C129DNCZAD , TM4C129DNCZAD , TM4C129EKCPDT , TM4C129EKCPDT , TM4C129ENCPDT , TM4C129ENCPDT , TM4C129ENCZAD , TM4C129ENCZAD , TM4C129LNCZAD , TM4C129LNCZAD , TM4C129XKCZAD , TM4C129XKCZAD , TM4C129XNCZAD , TM4C129XNCZAD

 

  1.   Abstract
  2.   Trademarks
  3. 1Introduction
  4. 2How to Install
    1. 2.1 Update the FreeRTOS Version in the TivaWare Directory
    2. 2.2 Adding FreeRTOS Hardware Driver Files for TM4C LaunchPads
  5. 3Architecture for TM4C FreeRTOS Examples
    1. 3.1 Proper Clock Configuration
    2. 3.2 How to use Hardware Interrupts Alongside the FreeRTOS Kernel
  6. 4Example Project Walkthroughs
    1. 4.1 Download and Import the Examples
    2. 4.2 CAN Examples
      1. 4.2.1 multi_can_rx
      2. 4.2.2 multi_can_tx
    3. 4.3 Hardware Timer Examples
      1. 4.3.1 timer_edge_capture
      2. 4.3.2 timer_edge_count
    4. 4.4 I2C Examples
      1. 4.4.1 i2c_simple_loopback
      2. 4.4.2 i2c_tmp117_demo
    5. 4.5 PWM Examples
      1. 4.5.1 pwm_interrupt
      2. 4.5.2 pwm_invert
    6. 4.6 SSI Examples
      1. 4.6.1 ssi_simple_xfer
      2. 4.6.2 ssi_quad_mode
    7. 4.7 μDMA Examples
      1. 4.7.1 adc_udma_pingpong
      2. 4.7.2 udma_mem_transfer

1 Introduction

The microcontroller market continues to see a steady increase in the utilization of embedded real-time operating systems (RTOS) to manage applications. The increased focus and need for RTOS solutions has led to a number of open source RTOS offerings including the widely used FreeRTOS. To address the growing need for FreeRTOS support on the TM4C Arm Cortex-M4F microcontroller series, Developing Basic Applications With FreeRTOS on TM4C MCU was released to provide a set of fundamental application examples. This application report builds off that foundation and expands the application examples to cover many commonly used TM4C peripherals.

Included with this application report are example projects for both the TM4C123x and the TM4C129x device families. These projects are based on the bare metal examples provided in the TivaWare Software Development Kit (SDK). The TivaWare™ SDK includes Driver Library (DriverLib) APIs for all peripherals that are the building blocks for any application on a TM4C microcontroller. The provided example projects demonstrate how to use DriverLib APIs within the FreeRTOS kernel to create simple real-world applications with various device peripherals. The peripherals that are demonstrated in this report are as follows.

  • Analog to Digital Converter (ADC)
  • Control Area Network (CAN)
  • Hardware Timer
  • Inter-Integrated Circuit (I2C)
  • Pulse Width Modulator (PWM)
  • Synchronous Serial Interface (SSI / SPI)
  • Micro Direct Memory Access (μDMA)