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| author | Lorenz Meier <lm@inf.ethz.ch> | 2013-06-13 09:14:40 +0200 |
|---|---|---|
| committer | Lorenz Meier <lm@inf.ethz.ch> | 2013-06-13 09:14:40 +0200 |
| commit | c255df1df9c1cd51e6d0e71ee5f2e92a22eac5cf (patch) | |
| tree | 2254ceb7c66ba63b6cb6738af92c839f3868c748 /nuttx/configs/sam3u-ek/src/up_touchscreen.c | |
| parent | bc5c15a4909386a1efd556f4648385440379b164 (diff) | |
| download | px4-nuttx-c255df1df9c1cd51e6d0e71ee5f2e92a22eac5cf.tar.gz px4-nuttx-c255df1df9c1cd51e6d0e71ee5f2e92a22eac5cf.tar.bz2 px4-nuttx-c255df1df9c1cd51e6d0e71ee5f2e92a22eac5cf.zip | |
Merged in upstream, took upstream UART driver without changes, needs re-evaluation (minor diffs to local version)
Diffstat (limited to 'nuttx/configs/sam3u-ek/src/up_touchscreen.c')
| -rw-r--r-- | nuttx/configs/sam3u-ek/src/up_touchscreen.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/nuttx/configs/sam3u-ek/src/up_touchscreen.c b/nuttx/configs/sam3u-ek/src/up_touchscreen.c index 251d9b624..f8b465748 100644 --- a/nuttx/configs/sam3u-ek/src/up_touchscreen.c +++ b/nuttx/configs/sam3u-ek/src/up_touchscreen.c @@ -183,7 +183,9 @@ static bool tsc_busy(FAR struct ads7843e_config_s *state) static bool last = (bool)-1; #endif - /* REVISIT: This might need to be inverted */ + /* BUSY is high impedance when CS is high (not selected). When CS is + * is low, BUSY is active high. + */ bool busy = sam_gpioread(GPIO_TCS_BUSY); #if defined(CONFIG_DEBUG_INPUT) && defined(CONFIG_DEBUG_VERBOSE) |