Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA2A1AB/SDADC24/ADC2#0x0
SDADST=0
Sigma-delta A/D Converter Control Register 2
Control of A/D conversion
0 (0): Stop A/D conversion
1 (1): Start A/D conversion
These bits are read as 0000000. The write value should be 0000000.
https://github.com/cmsis-svd/cmsis-svd-data