CC2531: Z-Stack Red/Green Leds, Buttons

Hi,

This is the behavior of the serial bootloader (SBL).

If the valid ZNP image exists, I believe the SBL will either:
- jump to location of ZNP image when SW2 is pressed
- jump to location of ZNP image automatically after 1 minute



Regards,
Toby

You can refer to the following codes from serial boot loader. led1 is green and led2 is red.

void main(void)
{
  uint8 time_spent_validating;
  uint8 bootloaderForcedByMainApp = FALSE;
  uint32 mainAppCommandLocal = mainAppCommand;

  vddWait(VDD_MIN_RUN);

  mainAppCommand = MAIN_APP_CMD_NONE;
    
  if (mainAppCommandLocal == MAIN_APP_CMD_FORCE_BOOTLOADER)
  {
    bootloaderForcedByMainApp = TRUE;
  }
  else if ((mainAppCommandLocal == MAIN_APP_CMD_PASS_THROUGH) || ((SLEEPSTA & LRESET) == RESETWD))
  {
    // If reset due to WatchDog Timer - Transfer control to the main application immediately.
    // WatchDog Timer reset causes the hardware to disconnect the USB. Withought this jump here,
    // the SBL code will try to initiaize the CDC too early, which causes undesired behavior on the host
    // (e.g. on beaglebone black - the host gets stuck)
    asm("LJMP 0x2000\n");
  }

  sblInit(bootloaderForcedByMainApp);
 
  HAL_TURN_ON_LED1();
  HAL_TURN_ON_LED2();
 
  if ((!bootloaderForcedByMainApp) && (sbImgValid(&time_spent_validating)))
  {
    HAL_TURN_OFF_LED2();
    
    if (sblWait(SBL_WAIT_TIME > time_spent_validating ? SBL_WAIT_TIME - time_spent_validating : 0))
    {
      HAL_TURN_OFF_LED1();
      
      sbReportState(SB_STATE_EXECUTING_IMAGE);
      
      while(sblIsUartTxPending())
      {
        sbUartPoll();
      }
      
      SLEEP(0x2600); //Give the last bytes in the HW TX fifo (if any) enough time to be transmitted

      while (SB1_PRESS || SB2_PRESS);
      
      sblUnInit();
      
      // Simulate a reset for the Application code by an absolute jump to location 0x2000.
      asm("LJMP 0x2000\n");
    }
  }
 
  HAL_TURN_OFF_LED1();
  HAL_TURN_ON_LED2();
 
  vddWait(VDD_MIN_NV);
  sblExec();

  sblUnInit();

  asm("LJMP 0x2000\n");
}