First, the purpose of the experiment
(1) be familiar adc and DMA
Second, the experimental environment
Window10
Server: windows
And server interaction software winscp putty
AUTOSAR Version: 4.2.2
Tresos studio 23.0
MCAL Version: S32K14X_MCAL4_2_RTM_HF8_1_0_1
Compiling environment：greenhill 201714
Debugging environment: ic5000
Third, the experimental procedures
1. Complete the hardware trigger adc adc
2. DMA channel configuration interrupt parameters
3. Project DMA interrupt register
4. mcl related to the module, adc module, mcu module, gpt modules, port module
5. related to the interrupt ADC interrupt or DMA interrupt, the interrupt is useless to GPT
Four, DMA parameters
1. Configure DMA interrupt, the interrupt enable setting
Configuring DMA instance (optionally provided, the specific role is unknown )
3.配置DMA Logical Channels
highest numbered master having the highest priority
4. Configuration adc
Fourth, the project DMA interrupt register
How come parameters, referring to the second experiment, do not forget to declare extern interrupt handler.
Fifth, the implementation code
Initialization part
/* init Port */
Port_Init(&PortConfigSet);
/*init Mcl*/
Mcl_Init(&MclConfigSet_0);
IoHwAB_Init_Intterupt();
/* init Gpt */
Gpt_Init(&GptChannelConfigSet);
Gpt_EnableNotification(GptConf_GptChannelConfiguration_GptChannelConfiguration_0);
Adc_Init(&AdcConfigSet);
Adc_SetupResultBuffer(AdcGroup_0, AdcGroup_0_Res);
Adc_EnableGroupNotification(AdcGroup_0);
Adc_EnableHardwareTrigger(AdcGroup_0);
/ * Start timer * /
Gpt_StartTimer(GptConf_GptChannelConfiguration_GptChannelConfiguration_0, 40000);
Interrupt notification function
FUNC(void, ADC_CODE) Adc_Adc12bsarv2_DmaTransferComplete0()
{
Adc_Adc12bsarv2_DmaEndGroupConversion((Adc_HwUnitType)ADC_UNIT_0);
}
Sixth, verification
Data, the value read by the changes observed watch.
