The below code throws an error on compilation. Not that MC_STOP and the other
constants are defined like:
const MC_STOP* = (0x00000000) # Timer A mode control: 0 - Stop
const OUTMOD_VAL_4* = (0x00000080) # PWM output mode: 4 - toggle
proc setupTimerISR() =
volatileStore[uint16](TA0CTL, MC_STOP)
volatileStore[uint16](TA0CCTL0, OUTMOD_VAL_4)
volatileStore[uint16](TA0CCR0, 0xFFFF)
volatileStore[uint16](TA0CTL, TASSEL_SMCLK + MC_UP + TACLR)
Error:
blink.nim(8, 24) Error: type mismatch: got <ptr uint16, int32>
but expected one of:
template volatileStore[T](dest: ptr T; val: T)
first type mismatch at position: 2
required type: T
but expression '0x0000FFFF' is of type: int32
expression: volatileStore[uint16](TA0CCR0, 0x0000FFFF)
volatileStore[uint16](TA0CCR0, 0xFFFF)
But then it compiles when I do this:
proc setupTimerISR() =
volatileStore[uint16](TA0CTL, MC_STOP)
volatileStore[uint16](TA0CCTL0, OUTMOD_VAL_4)
volatileStore[uint16](TA0CCR0, 0xFFFF'u16)
volatileStore[uint16](TA0CTL, TASSEL_SMCLK + MC_UP + TACLR)
Why is the 'u16 necessary? It gives the same error if I write it as 0x0000FFFF.
Why won't the compiler coerce it to the right type? That will be very tedious.
