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Manually copy the value when you set up hblank
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@ -73,9 +73,11 @@ impl Dma {
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let n_transfers = (size_of::<T>() / 2) as u32;
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self.source_addr.set(handle.data.as_ptr() as u32);
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self.source_addr.set(handle.data.as_ptr().add(1) as u32);
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self.dest_addr.set(location.memory_location as u32);
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location.memory_location.write_volatile(values[0]);
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self.ctrl_addr.set(
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(0b10 << 0x15) | // keep destination address fixed
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// (0b00 << 0x17) | // increment the source address each time
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