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ADuCM355 - Trigger Sequencer (or alternatively Measurement itself) with Push-Button

Laura_2189

on Nov 24, 2022

Category: Software

Product Number: AVAS104341

Software Version: Arm 9.30.1

Hi,

I'm running the "M355_ECSns_SingleWE" and "-_DualWE" -Examples for the ADUCM355 on the EVAL-ADUCM355QSPZ-Board.

The basic structure of these two (and all other) Application-Examples from the ADUCM355 Git is like:

After starting the program/application, and all configuration-routines finished, the sequencer runs the according measurement endlessly via the sleep- and wakeup-timer-interrupts.

This process can only be interrupted by stopping the whole program/application.

I would like to use the "M355_GPIO" -Example from the DigitalDie examples and combine it with the examples mentioned above to apply the following changes:

- At start of the program, only the configuration routines get executed but the sequencer is not started automatically.

- Instead the program should enter an "idle-state" where it does nothing.

- Pressing the push button S2 on the EVAL-Board starts the sequencer (and so the measurement).

- After this, the sequencer is running (as in the standard version of the examples) and controls the measurement and all stuff (sendig data to UART etc.)

- Pressing the push button S3 on the EVAL-Board stops the sequencer after finishing the current measurement cycle.

- After this, the program goes back in the "idle-state" and pressing S2 can start the sequencer again and so on.

Would this changes be possible with a moderate amount of effort or would it be possible to build a complete new application ?

Many Greetings

Tags: software ADuCM355QSPZ aduc cortex m3 interrupt AVAS104341 sequencer Arm 9.30.1 Sensors and MEMS aducm355 gpio push-button Application Examples Electrochemical Sensors Show More

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0 Akila

over 1 year ago
Hi,

One simple way to implement the above is as below:

void AD5940_Main(void)
{
uint32_t temp;

AppAMPCfg_Type *pAmpCfg;

AppAMPGetCfg(&pAmpCfg);
AD5940PlatformCfg();
AD5940AMPStructInit(); /* Configure your parameters in this function */

/* Initialise 2 EC sensors */
AppECSnrInit(&pAmpCfg->SensorCh0, M355_CHAN0);

AppAMPInit(AppBuff, APPBUFF_SIZE); /* Initialize application. Provide a buffer, which is used to store sequencer commands */
while (AD5940_ReadReg(REG_AGPIO_GP0IN) == 0xA)
{
AppAMPCtrl(AMPCTRL_START, 0); /* Control measurment to start. Second parameter has no meaning with this command. */

while(1)
{
/* Wait for data ready interrupt on internal GPIO pin */
if(AD5940_GetMCUIntFlag())
{
AD5940_ClrMCUIntFlag(); /* Clear this flag */
AppAMPISR(AppBuff, &temp); /* Deal with it and provide a buffer to store data we got */
AMPShowResult((float*)AppBuff, temp); /* Show the results to UART */
/*Digital die sleep untill wakeup timer expires*/
PwrCfg(ENUM_PMG_PWRMOD_HIBERNATE,MONITOR_VBAT_EN,0); //this line is all code for digital die entering hibernate

if (AD5940_ReadReg(REG_AGPIO_GP0IN) == 0xB)
break;

}
}
}
}
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0 Laura_2189

over 1 year ago in reply to Akila

Hi, thx for the explanation, I already figured out my own way to do it, it looks basically like this:

void AD5940_Main(void)
{  
    ...configuration...
  
  while(1)
  {
    
    if((ucButtonPress == 1) && (ctrl_flag == 0))
    {
      AppAMPCtrl(AMPCTRL_START, 0);
      ctrl_flag = 1;
    }
    else if((ucButtonPress == 0) && (ctrl_flag == 1))
    {
      AppAMPCtrl(AMPCTRL_STOPNOW, 0);
      ctrl_flag = 0;
    }
    
    /* Wait for data ready interrupt on internal GPIO pin */
    if(AD5940_GetMCUIntFlag())
    {
      AD5940_ClrMCUIntFlag(); /* Clear this flag */
      AppAMPISR(AppBuff, &temp); /* Deal with it and provide a buffer to store data we got */
      AMPShowResult((float*)AppBuff, temp); /* Show the results to UART */    
      /*Digital die sleep untill wakeup timer expires*/
      PwrCfg(ENUM_PMG_PWRMOD_HIBERNATE, MONITOR_VBAT_EN, 0); //this line is all code for digital die entering hibernate
    }    
  }
}

The keyword AMPCTRL_STOPNOW seems to work as intended. A press on the button stops the measurement and a press on the second button continues the measurement.

But what is confusing me is that the keyword AMPCTRL_STOPSYNC doesn't seem to work as intended. Because instead of finishing the the measurement and then stop, the application simply crashes when im using it.

I will try to do further research on this topic.

Thx for your help so far.

Greetings

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