diff options
| author | (no author) <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2006-09-12 17:04:59 +0000 |
|---|---|---|
| committer | (no author) <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1> | 2006-09-12 17:04:59 +0000 |
| commit | 42182e45b176d105ed2c87e026a0f78a348d509f (patch) | |
| tree | 88ae8772f5d0a92691a62d6860d44d5b9601eff7 /openpcd/firmware/doc/piccsim-todo.txt | |
| parent | 20d5df3db6d6884187eaa43e91e907d69a67b35f (diff) | |
add some more documentation / notes
git-svn-id: https://svn.openpcd.org:2342/trunk@188 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
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 |