diff options
Diffstat (limited to 'openpcd/firmware/doc/piccsim-todo.txt')
| -rw-r--r-- | openpcd/firmware/doc/piccsim-todo.txt | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/openpcd/firmware/doc/piccsim-todo.txt b/openpcd/firmware/doc/piccsim-todo.txt new file mode 100644 index 0000000..a009b7d --- /dev/null +++ b/openpcd/firmware/doc/piccsim-todo.txt @@ -0,0 +1,34 @@ +- code to control digital potentiometers via SPI [MM] + - chip select not SPI CS + +- idea: use comparator to determine voltage range, then reconfigure amplifier + - later + +- problem: capacitance of digital poti + - idea 1: + - idea 2: logarithmic amplifier using transistor + +- ADC driver + - core [MM] + - trigger function (we want to read all values ASAP) + - callback function (once new values are available) + - init function (initialize ADC) + - USB integration [HW] + - simple READ_ADC command + - one reply packet with all ADC channels + +- OS timer + - how often? + +- 'load modulation' driver + x set PA2/PA3 to binary 0..3 + +x add IO definitions for + - PLL INHIBIT low + - SPI_SS1_GAIN + - SPI_SS2_DATA_THRESHOLD + - BOOTLDR + +- sampled data continuous output into file / stdout + - trigger sampling by raising/falling edge (configurable) + - sample only one buffer |