Hi,
I'm trying to configure ADC_ETC to start conversions on ADC2. With help from Config Tool, IO have set up two conversion chains. One using ADC1 and one using ADC2.
The one using ADC1 works perfectly.
The one using ADC2 are using the channels configured for ADC1.
I'm using SW triggers.
In the Config Tool I cannot see any effect by changing the "Trigger source". The reference manual says that to use ADC2 you have to use "trig4~trig7", but the Config Tool only shows "XBARx_TRIG 0-3". Is XBAR1, TRIG 0-3 the same as trig4~trig7? Using this still uses the configuration from ADC1.
Here some of my init code (I have shrinked it to 2 times 2 channels):
from peripherals.c:
const adc_etc_config_t ADC_ETC_config = {
.clockPreDivider = 1,
.dmaMode = kADC_ETC_TrigDMAWithLatchedSignal,
.enableTSCBypass = true,
.enableTSC0Trigger = false,
.enableTSC1Trigger = false,
.TSC0triggerPriority = 0,
.TSC1triggerPriority = 0,
.XBARtriggerMask = 0
};
/* ADC_ETC triggers configuration */
const adc_etc_trigger_config_t ADC_ETC_trigger_config[2] = {
{
.triggerPriority = 1,
.enableSWTriggerMode = true,
.enableSyncMode = false,
.initialDelay = 0,
.sampleIntervalDelay = 1,
.triggerChainLength = 1
},
{
.triggerPriority = 1,
.enableSWTriggerMode = true,
.enableSyncMode = false,
.initialDelay = 0,
.sampleIntervalDelay = 1,
.triggerChainLength = 2
}
};
/* ADC_ETC chain configurations for appropriate (see name of these arrays) trigger configuration */
const adc_etc_trigger_chain_config_t ADC_ETC_TC_0_chain_config[2] = {
{
.enableB2BMode = true,
.ADCHCRegisterSelect = 1,
.ADCChannelSelect = 0,
.InterruptEnable = kADC_ETC_InterruptDisable,
},
{
.enableB2BMode = true,
.ADCHCRegisterSelect = 2,
.ADCChannelSelect = 1,
.InterruptEnable = kADC_ETC_InterruptDisable,
}
};
const adc_etc_trigger_chain_config_t ADC_ETC_TC_1_chain_config[2] = {
{
.enableB2BMode = true,
.ADCHCRegisterSelect = 1,
.ADCChannelSelect = 8,
.InterruptEnable = kADC_ETC_InterruptDisable,
},
{
.enableB2BMode = true,
.ADCHCRegisterSelect = 2,
.ADCChannelSelect = 12,
.InterruptEnable = kADC_ETC_InterruptDisable,
}
};
static void ADC_ETC_init(void) {
ADC_ETC_Init(ADC_ETC_PERIPHERAL, &ADC_ETC_config);
NVIC_SetPriority(ADC_ETC_ADC_ETC_0_IRQN, ADC_ETC_ADC_ETC_0_IRQ_PRIORITY);
EnableIRQ(ADC_ETC_ADC_ETC_0_IRQN);
NVIC_SetPriority(ADC_ETC_ADC_ETC_1_IRQN, ADC_ETC_ADC_ETC_1_IRQ_PRIORITY);
EnableIRQ(ADC_ETC_ADC_ETC_1_IRQN);
NVIC_SetPriority(ADC_ETC_ADC_ETC_ERROR_IRQN, ADC_ETC_ADC_ETC_ERROR_IRQ_PRIORITY);
EnableIRQ(ADC_ETC_ADC_ETC_ERROR_IRQN);
}
My Init code:
static void adc_init_peripherals_h(void)
{
ADC_ETC_SetTriggerConfig(ADC_ETC_PERIPHERAL, ADC_ETC_TC_0, &ADC_ETC_trigger_config[ADC_ETC_TC_0]);
ADC_ETC_SetTriggerChainConfig(ADC_ETC_PERIPHERAL, ADC_ETC_TC_0, 0U, &ADC_ETC_TC_0_chain_config[0]);
ADC_ETC_SetTriggerChainConfig(ADC_ETC_PERIPHERAL, ADC_ETC_TC_0, 1U, &ADC_ETC_TC_0_chain_config[1]);
ADC_ETC_SetTriggerConfig(ADC_ETC_PERIPHERAL, ADC_ETC_TC_1, &ADC_ETC_trigger_config[ADC_ETC_TC_1]);
ADC_ETC_SetTriggerChainConfig(ADC_ETC_PERIPHERAL, ADC_ETC_TC_1, 0U, &ADC_ETC_TC_1_chain_config[0]);
ADC_ETC_SetTriggerChainConfig(ADC_ETC_PERIPHERAL, ADC_ETC_TC_1, 1U, &ADC_ETC_TC_1_chain_config[1]);
}
Starting conversions:
void adc_start(void)
{
ADC_ETC_DoSoftwareTrigger(ADC_ETC_PERIPHERAL, ADC_ETC_TC_0);
ADC_ETC_DoSoftwareTrigger(ADC_ETC_PERIPHERAL, ADC_ETC_TC_1);
}
ISR:
void ADC_ETC_ADC_ETC_0_IRQHANDLER(void) {
resultsAdc1[0] = ADC_ETC_GetADCConversionValue(ADC_ETC_PERIPHERAL, ADC_ETC_TC_0, 0U);
resultsAdc1[1] = ADC_ETC_GetADCConversionValue(ADC_ETC_PERIPHERAL, ADC_ETC_TC_0, 1U);
ADC_ETC_ClearInterruptStatusFlags(ADC_ETC, ADC_ETC_TC_0, kADC_ETC_Done0StatusFlagMask);
}
void ADC_ETC_ADC_ETC_1_IRQHANDLER(void) {
resultsAdc2[0] = ADC_ETC_GetADCConversionValue(ADC_ETC_PERIPHERAL, ADC_ETC_TC_1, 0U);
resultsAdc2[1] = ADC_ETC_GetADCConversionValue(ADC_ETC_PERIPHERAL, ADC_ETC_TC_1, 1U);
ADC_ETC_ClearInterruptStatusFlags(ADC_ETC, ADC_ETC_TC_1, kADC_ETC_Done1StatusFlagMask);
}
Do I do anything wrong?
