Problems with DSP course

Hi everyone,

I'm currently working through ARM's dsp course but I'm having a few issues with the first lab. The output from my headphones is only from the left channel and I haven't been able to identify the 48kHz sampling interrupt. I also measure no output on my oscilloscope when trying the sine_lut section of the lab. Can anybody help? It seems like the board is not working at all.

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