NANO100: MCU Sine wave generator - using MCU DAC(Look up table with adjustable amplitude)

1.Generate sample point use octave.

2.Create look up table.use const to store look up table in ROM for less latency.

3.Scale to real data function (for 12 bits DAC the max value is 4096)

nrf52 : Add CMSIS_DSP package in Keil 5

1.Open Manage Run-Time Environment and check the DSP

2.Include arm_math.h
  and  path in your project:Keil_v5\ARM\PACK\ARM\CMSIS\5.0.1\CMSIS\Include

3.Add symbol ARM_MATH_CM4 since nrf52832 use Cortex M4F

4.Simple matrix multiplication code

Ref:
    1. CMSIS DSP Software Library