RE: NRF52840 Timer Registers

Karl Ylvisaker — Mon, 10 Aug 2020 13:25:11 GMT

Hello,

I would say as @dmitry already have mentioned: please keep in mind that the registers are 32 bit-wide.
In the configuration registers you functions will likely work as intended, since only a couple of bits is used, but when you get to the CC registers it will fail.

For the record, in your configuration you are setting BITMODE to 0, which configures 16 bit resolution, while your comment states you are attempting to set 32 bit resolution - so this is either an oversight, an error or an outdated comment.

Please let me know if accounting for the registers being 32 bit resolves your issue with the unexpected values and behavior.

Best regards,
Karl

RE: NRF52840 Timer Registers

Dmitry — Sat, 08 Aug 2020 10:35:07 GMT

Hi,

inline volatile uint8_t *regAddress (Registers reg){
  return reinterpret_cast<volatile 
        uint8_t*>(Timer_2_base + reg);
}
inline uint8_t regRead(Registers reg){
  return *regAddress(reg);
}

here you're working with registers as with 8-bit ones, but they're 32-bit wide.