Add an ADC-based touchscreen driver for the PIC32MX7 MMB board

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4804 42af7a65-404d-4744-a932-0658087f49c3

configs/pic32mx7mmb/README.txt

@@ -762,3 +762,13 @@ Where <subdir> is one of the following:
       CONFIGURED_APPS += examples/nximage  :
       CONFIGURED_APPS += examples/nxlines  :
 
+  Enabling touch screen support in the nsh configuaration
+  -------------------------------------------------------
+
+    In defconfig (or nuttx/.config), set:
+
+      CONFIG_INPUT=y
+
+    In appconfig (or apps/.config), uncomment:
+
+      CONFIGURED_APPS += examples/touchscreen

configs/pic32mx7mmb/nsh/appconfig

@@ -124,3 +124,9 @@ ifeq ($(CONFIG_NX),y)
 #CONFIGURED_APPS += examples/nximage
 #CONFIGURED_APPS += examples/nxlines
 endif
+
+# Uncomment to enable the touchscreen test
+
+ifeq ($(CONFIG_INPUT),y)
+#CONFIGURED_APPS += examples/touchscreen
+endif

configs/pic32mx7mmb/nsh/defconfig

@@ -1567,6 +1567,28 @@ CONFIG_EXAMPLES_NXLINES_CIRCLECOLOR=0xf7bb
 CONFIG_EXAMPLES_NXLINES_BPP=16
 CONFIG_EXAMPLES_NXLINES_EXTERNINIT=n
 
+#
+# Settings for examples/touchscreen
+#
+# CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN - Build the touchscreen test as
+#   an NSH built-in function.  Default: Built as a standalone problem
+# CONFIG_EXAMPLES_TOUCHSCREEN_MINOR - The minor device number.  Minor=N
+#   correspnds to touchscreen device /dev/input0.  Note this value must
+#   with CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH.  Default 0.
+# CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH - The path to the touchscreen
+#   device.  This must be consistent with CONFIG_EXAMPLES_TOUCHSCREEN_MINOR.
+#   Default: "/dev/input0"
+# CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES - If CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN
+#   is defined, then the number of samples is provided on the command line
+#   and this value is ignored.  Otherwise, this number of samples is
+#   collected and the program terminates.  Default:  Samples are collected
+#   indefinitely.
+#
+CONFIG_EXAMPLES_TOUCHSCREEN_BUILTIN=y
+CONFIG_EXAMPLES_TOUCHSCREEN_MINOR=0
+CONFIG_EXAMPLES_TOUCHSCREEN_DEVPATH="/dev/input0"
+CONFIG_EXAMPLES_TOUCHSCREEN_NSAMPLES=25
+
 #
 # Settings for examples/usbserial
 #

configs/pic32mx7mmb/src/Makefile

@@ -55,6 +55,10 @@ ifeq ($(CONFIG_USBMSC),y)
 CSRCS		+= up_usbmsc.c
 endif
 
+ifeq ($(CONFIG_INPUT),y)
+CSRCS		+= up_touchscreen.c
+endif
+
 AOBJS		= $(ASRCS:.S=$(OBJEXT))
 COBJS		= $(CSRCS:.c=$(OBJEXT))