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Diffstat (limited to 'notes/dac.txt')
| -rw-r--r-- | notes/dac.txt | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/notes/dac.txt b/notes/dac.txt new file mode 100644 index 0000000..9df0782 --- /dev/null +++ b/notes/dac.txt @@ -0,0 +1,32 @@ + +DAC notes (for maple native and other "high density" STM32 devices) +------------------------------------------------------------------------------- +There is an ST application note for the DACs; it provides a lot of context but +doesn't help setup the peripheral very much. + +For the first code iteration we'll just use 12-bit right-aligned single writes, +so use DAC_DHR12Rx + +Once data is loaded into the digital registers, there are a number of possible +triggers to start conversion to analog output: external interrupts, software +control, and timer events. We'll just use software triggering for now. + +There is (obviously) DMA support for DAC output. + +There are noise output and triangle wave output features with variable +amplitude. + +There are many additional modes to tigger output to both channels at the same +time. + +Buffering will be enabled by default. + +TODO +------------------------------------------------------------------------------- +- sine wave demo using Timer interrupts +- wirish implementation +- documentation +- higher performance modes? +- signal quality testing +- DMA output + |