Hello, engineers
I am triggering EVADC Converison with the TOM output of the GTM module.
We are also synchronizing group0, 1, 2, and 3 of evadc.
The master is group 0 and 1, 2, 3 is save.
At this time, each group is assigned four channels.
So at the same time, four channels are converted into parallel, and in each group, four channels are converted into series, resulting in a total of 16 outcomes.
I would like to generate a result event after the 4th channel of each group ends the conversion, i.e. after all 16 adc ends.
In other words, I would like to generate one result event per advertise.
When one channel was assigned to each group, the result event occurred well once per trigger, but the result event did not occur on time after allocating multiple channels to each group.
Here is the code I wrote.
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void initEVADC()
{
initEVADCModule(); /* Initialize the EVADC module */
initEVADCGroupMaster(); /* Initialize the EVADC Master Group */
initEVADCGroupSlave(); /* Initialize the EVADC Slave1 Group */
initEVADCChannelsMaster(); /* Initialize the channels */
initEVADCChannelsSlave();
fillAndStartQueue(); /* Fill the queue and start it */
}
/* Function to initialize the EVADC module with default parameters */
void initEVADCModule()
{
/* Create configuration */
IfxEvadc_Adc_Config adcConfig;
IfxEvadc_Adc_initModuleConfig(&adcConfig, &MODULE_EVADC);
/* Initialize module */
IfxEvadc_Adc_initModule(&g_evadc, &adcConfig);
}
/* Function to initialize the EVADC group with default parameters */
void initEVADCGroupMaster()
{
/* Create and initialize group configuration with default values */
IfxEvadc_Adc_GroupConfig adcGroupConfig;
IfxEvadc_Adc_initGroupConfig(&adcGroupConfig, &g_evadc);
/* Setting user configuration using group 2 */
adcGroupConfig.groupId = g_groups[0];
adcGroupConfig.master = GROUPID_0;
adcGroupConfig.analogConverterMode= IfxEvadc_AnalogConverterMode_off;
/* Enable queued source */
adcGroupConfig.arbiter.requestSlotQueue0Enabled = TRUE;
/* Configure the queue */
adcGroupConfig.queueRequest[0].requestSlotPrio = IfxEvadc_RequestSlotPriority_highest;
adcGroupConfig.queueRequest[0].requestSlotStartMode = IfxEvadc_RequestSlotStartMode_cancelInjectRepeat;
adcGroupConfig.queueRequest[0].triggerConfig.gatingMode = IfxEvadc_GatingMode_always; /* No gate signal is required */
adcGroupConfig.queueRequest[0].triggerConfig.triggerMode = IfxEvadc_TriggerMode_uponAnyEdge;
adcGroupConfig.queueRequest[0].triggerConfig.triggerSource = IfxEvadc_TriggerSource_10; /* Trigger source taken from Gating Input */
/* Initialize the group */
IfxEvadc_Adc_initGroup(&g_adcGroup[0], &adcGroupConfig);
}
void initEVADCGroupSlave()
{
for(uint16 idx = 1; idx < GROUPS_NUM; idx++)
{
/* Create and initialize group configuration with default values */
IfxEvadc_Adc_GroupConfig adcGroupConfig;
IfxEvadc_Adc_initGroupConfig(&adcGroupConfig, &g_evadc);
/* Setting user configuration for Group B (Slave 1) */
adcGroupConfig.groupId = g_groups[idx];
adcGroupConfig.master = GROUPID_0;
adcGroupConfig.analogConverterMode= IfxEvadc_AnalogConverterMode_off;
/* Initialize the group */
IfxEvadc_Adc_initGroup(&g_adcGroup[idx], &adcGroupConfig);
}
}
void initEVADCChannelsMaster()
{
for(uint16 idx = 0; idx < CHANNELS_NUM; idx++)
{
/* Create channel configuration */
IfxEvadc_Adc_ChannelConfig adcChannelConfig;
/* Initialize the configuration with default values */
IfxEvadc_Adc_initChannelConfig(&adcChannelConfig, &g_adcGroup[0]);
/* Select the channel ID and the respective result register */
adcChannelConfig.channelId = g_grp8channels[idx];
adcChannelConfig.resultRegister = g_grp8channels[idx];
adcChannelConfig.resultSrcNr= IfxEvadc_SrcNr_group0;
adcChannelConfig.synchonize= TRUE;
if(idx == (CHANNELS_NUM-1))
{
adcChannelConfig.resultServProvider= IfxSrc_Tos_cpu0;
adcChannelConfig.resultPriority = ISR_PRIORITY_ADC;
}
/* Initialize the channel */
IfxEvadc_Adc_initChannel(&g_adcChannel[0][idx], &adcChannelConfig);
}
}
void initEVADCChannelsSlave()
{
for(uint16 idx = 1; idx < GROUPS_NUM; idx++)
{
for(uint16 idx_c = 0; idx_c < CHANNELS_NUM; idx_c++)
{
/* Create channel configuration */
IfxEvadc_Adc_ChannelConfig adcChannelConfig;
/* Initialize the configuration with default values */
IfxEvadc_Adc_initChannelConfig(&adcChannelConfig, &g_adcGroup[idx]);
/* Select the channel ID and the respective result register */
adcChannelConfig.channelId = g_grp8channels[idx];
adcChannelConfig.resultRegister = g_grp8channels[idx];
adcChannelConfig.resultSrcNr = IfxEvadc_SrcNr_group0;
/* Initialize the channel */
IfxEvadc_Adc_initChannel(&g_adcChannel[idx][idx_c], &adcChannelConfig);
}
}
}
void fillAndStartQueue()
{
for(uint8 idx = 0; idx < CHANNELS_NUM; idx++)
{
/* Add channel to queue with refill and external trigger enabled */
if(idx==0)
{
IfxEvadc_Adc_addToQueue(&g_adcChannel[0][idx], IfxEvadc_RequestSource_queue0, (ENABLE_EXTERNAL_TRIGGER | IFXEVADC_QUEUE_REFILL));
}
else
{
IfxEvadc_Adc_addToQueue(&g_adcChannel[0][idx], IfxEvadc_RequestSource_queue0, (IFXEVADC_QUEUE_REFILL));
}
IfxEvadc_Adc_setAnalogConvertControl(&MODULE_EVADC, &g_adcGroup[0], IfxEvadc_AnalogConverterMode_normalOperation);
}
}
/* Function to read the EVADC used channel */
void readEVADC()
{
for(uint8 i = 0; i < GROUPS_NUM; i++)
{
for(uint8 j = 0; j < CHANNELS_NUM; j++)
{ /* Wait for a valid result */
Ifx_EVADC_G_RES conversionResult;
do
{
conversionResult = IfxEvadc_Adc_getResult(&g_adcChannel[i][j]); /* Read the result of the selected channel */
} while(!conversionResult.B.VF);
/* Store result */
g_results[i][j] = conversionResult;
}
}
}
/* ADC Interrupt Service Routine */
IFX_INTERRUPT(ISRresultADC, 0, ISR_PRIORITY_ADC);
void ISRresultADC(void)
{
IfxPort_setPinHigh(LAMP1);//P00.6
g_cnt++;
readEVADC();
IfxPort_setPinLow(LAMP1);//P00.6
}
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As you can see from the code, the setting related to the result event was done only for channel 4, the last channel to be converted from the master group0.
If you know what's wrong, please answer.
Thank you.
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Apr 3, 2024
Solved