RA2A1 - How to continuously read eight ADC channels through DMA?

Question

How to continuously read eight ADC channels through DMA? Are there any examples available for reading ADCs for RA2A1 and RA4M1?

Richard · Accepted Answer

EK_RA2A1_ADC_DTC_V2.zip 
 
 Please find attached a new version of the code. 
 This example scans AN000, AN001, AN002, AN003, AN006, AN007, AN016 and AN018 
 The data are stored in an array the is x8 deep. 
 As in the first project the DTC is used in chain mode. However, rater than use a single block mode transfer and using chained transfers to reset the block mode parameters, in this example single channel Repeat Mode transfers are chained together. The advantage of this is that in Repeat Mode, the registers are reset automatically to their is no need to use extra transfers to reset things. 
 In the same way as before, the process can run forever or can be interrupted by the defines 
 #define DTC_CHAIN_FOREVER 1 
 or 
 #define DTC_CHAIN_ESCAPE 1 
 
 Hope this is of interest 
 Regards, 
 Richard

Marek · Answer

Thank you. This helps.