Diff: DMAChannels.h

Revision:

47:df7a88cd249c

Child:

55:4db125cd11a0

diff -r c42166b2878c -r df7a88cd249c DMAChannels.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DMAChannels.h	Thu Feb 18 07:32:20 2016 +0000
@@ -0,0 +1,36 @@
+// Pinscape Controller DMA channel assignments
+//
+// The SimpleDMA class has provisions to assign channel numbers
+// automatically as transfers are performed, but auto assignment
+// doesn't play well with "channel linking", which we use in the
+// TSL1410R code.  Channel linking requires us to know the hardware
+// channel number of the link target before any transfers start.
+// The only good way to do this is to pre-assign specific numbers.
+// And once we start doing this, it's easiest to assign numbers
+// for everyone.
+//
+
+#ifndef DMAChannels_H
+#define DMAChannels_H
+
+// --------------------------------------------------------------
+//
+// PWM controllers
+//
+const int DMAch_TLC5940 = 0;    // TLC5940 PWM controller chips
+
+
+// --------------------------------------------------------------
+//
+// Plunger Sensors
+//
+// Plunger sensors are mutually exclusive since there's only one
+// in any given system, so any channels assigned for one type of 
+// sensor can be reused by other sensor types.
+
+// TSL1410R CCD plunger sensor
+const int DMAch_CLKUP   = 1;    // Clock Up signal generator
+const int DMAch_ADC     = 2;    // ADC (analog input) sample transfer
+const int DMAch_CLKDN   = 3;    // Clock Down signal generator
+
+#endif