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explain RMT variations
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19
DCCRMT.cpp
19
DCCRMT.cpp
@ -17,6 +17,25 @@
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* along with CommandStation. If not, see <https://www.gnu.org/licenses/>.
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*/
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/*
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* RMT has "channels" which us FIFO RAM where you place what you want to send
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* or receive. Channels can be merged to get more words per channel.
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*
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* WROOM: 8 channels total of 512 words, 64 words per channel. We use currently
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* channel 0+1 for 128 words for DCC MAIN and 2+3 for DCC PROG.
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*
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* S3: 8 channels total of 384 words. 4 channels dedicated for TX and 4 channels
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* dedicated for RX. 48 words per channel. So for TX there are 4 channels and we
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* could use them with 96 words for MAIN and PROG if DCC data does fit in there.
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*
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* C3: 4 channels total of 192 words. As we do not use RX we can use all for TX
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* so the situation is the same as for the -S3
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*
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* C6, H2: 4 channels total of 192 words. 2 channels dedictaed for TX and
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* 2 channels dedicated for RX. Half RMT capacity compared to the C3.
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*
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*/
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#if defined(ARDUINO_ARCH_ESP32)
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#include "defines.h"
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#include "DIAG.h"
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