From 42182e45b176d105ed2c87e026a0f78a348d509f Mon Sep 17 00:00:00 2001
From: "(no author)" <(no author)@6dc7ffe9-61d6-0310-9af1-9938baff3ed1>
Date: Tue, 12 Sep 2006 17:04:59 +0000
Subject: add some more documentation / notes

git-svn-id: https://svn.openpcd.org:2342/trunk@188 6dc7ffe9-61d6-0310-9af1-9938baff3ed1
---
 openpcd/firmware/doc/piccsim-todo.txt | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 openpcd/firmware/doc/piccsim-todo.txt

(limited to 'openpcd/firmware/doc/piccsim-todo.txt')

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
-- 
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