SWRA578B October   2017  – April 2020 CC1312PSIP , CC1312R , CC1314R10 , CC1352P , CC1352P7 , CC1352R , CC2620 , CC2630 , CC2640 , CC2640R2F-Q1 , CC2642R , CC2642R-Q1 , CC2650MODA , CC2652P , CC2652R , CC2652R7 , CC2652RB , CC2652RSIP

 

  1.   Ultra-Low Power Sensing Applications With CC13x2/CC26x2
    1.     Trademarks
    2. 1 Overview
    3. 2 Measurement Conditions
      1. 2.1 Software
      2. 2.2 Hardware
    4. 3 Measurements
      1. 3.1 BOOSTXL-ULPSENSE
        1. 3.1.1 Analog Light Sensor
        2. 3.1.2 Capacitive Touch
        3. 3.1.3 LC Flow Meter
        4. 3.1.4 Potentiometer
        5. 3.1.5 Reed Switch
        6. 3.1.6 SPI Accelerometer
      2. 3.2 LPSTK-CC1352R
        1. 3.2.1 I2C Light Sensor
        2. 3.2.2 I2C Temperature and Humidity Sensor
        3. 3.2.3 SPI Accelerometer
        4. 3.2.4 Hall Effect Sensor
      3. 3.3 Comparison with System CPU
        1. 3.3.1 4 MHz SPI Transfer
        2. 3.3.2 1 MHz SPI Transfer
        3. 3.3.3 Wake-up and Sleep
    5. 4 Summary
    6. 5 References
  2.   A Creating the comparison examples
    1.     A.1 SPI Transfer – Sensor Controller
    2.     A.2 SPI Transfer – System CPU
    3.     A.3 Wake Up and Sleep – Sensor Controller
    4.     A.4 Wake up and Sleep – System CPU
  3.   Revision History

A.3 Wake Up and Sleep – Sensor Controller

The wake up and sleep example is created in the following way:

  1. Open an empty_CCxxxxxx_LAUNCHXL_tirtos_ccs project in ccs, for example empty_CC1352R1_LAUNCHXL_tirtos_ccs.
  2. Create a new project in SCStudio and select output directory to the empty_CCxxxxxx_LAUNCHXL_tirtos_ccs project folder.
  3. Select correct chip.
  4. Create a new task called “Wake-up And Sleep” with “RTC-Based Execution Scheduling” enabled.
  5. Let the code in “Initialization Code” and “Execution Code” be the following:
    6. fwScheduleTask(1);
  6. Delete “main_tirtos.c” and replace empty.c with the following code:
    7. * TI-RTOS Header files */ #include <xdc/std.h> #include <ti/sysbios/BIOS.h> /* Example/Board Header files */ #include " ti_drivers_config.h " #include "scif.h" #define BV(x) (1 << (x)) /* ======== main ======== */ int main(void) { Board_initGeneral(); // Initialize the Sensor Controller scifOsalInit(); scifInit(&scifDriverSetup); // Set the Sensor Controller task tick interval to 0.1 second // This variable controls how often the wake-up is triggered uint32_t rtc_Hz = 10; // 10Hz RTC scifStartRtcTicksNow(0x00010000 / rtc_Hz); // Start Sensor Controller task scifStartTasksNbl(BV(SCIF_WAKEUP_AND_SLEEP_TASK_ID)); /* Start kernel. */ BIOS_start(); return (0); }