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| author | Lorenz Meier <lm@inf.ethz.ch> | 2012-11-23 22:52:37 +0100 |
|---|---|---|
| committer | Lorenz Meier <lm@inf.ethz.ch> | 2012-11-23 22:52:37 +0100 |
| commit | b1bc5e0e461856ca8f1cc532eb2023ddbe2cb957 (patch) | |
| tree | e56b7ced5928fac51c83754652a105529c38979c /apps/drivers/device | |
| parent | 0193d590db92b96e93de9594b7db75a2c7805de6 (diff) | |
| download | px4-firmware-b1bc5e0e461856ca8f1cc532eb2023ddbe2cb957.tar.gz px4-firmware-b1bc5e0e461856ca8f1cc532eb2023ddbe2cb957.tar.bz2 px4-firmware-b1bc5e0e461856ca8f1cc532eb2023ddbe2cb957.zip | |
Improved drivers, allowed parallel use of multiple gyros
Diffstat (limited to 'apps/drivers/device')
| -rw-r--r-- | apps/drivers/device/spi.cpp | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/apps/drivers/device/spi.cpp b/apps/drivers/device/spi.cpp index 63c7c12aa..8fffd60cb 100644 --- a/apps/drivers/device/spi.cpp +++ b/apps/drivers/device/spi.cpp @@ -86,7 +86,7 @@ SPI::init() { int ret = OK; - // attach to the spi bus + /* attach to the spi bus */ if (_dev == nullptr) _dev = up_spiinitialize(_bus); @@ -96,7 +96,10 @@ SPI::init() goto out; } - // call the probe function to check whether the device is present + /* deselect device to ensure high to low transition of pin select */ + SPI_SELECT(_dev, _device, false); + + /* call the probe function to check whether the device is present */ ret = probe(); if (ret != OK) { @@ -104,7 +107,7 @@ SPI::init() goto out; } - // do base class init, which will create the device node, etc. + /* do base class init, which will create the device node, etc. */ ret = CDev::init(); if (ret != OK) { @@ -112,7 +115,7 @@ SPI::init() goto out; } - // tell the workd where we are + /* tell the workd where we are */ log("on SPI bus %d at %d", _bus, _device); out: |