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Allow access to both device handles, make external use a special handle

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This commit is contained in:
Lorenz Meier
2015-01-02 12:28:21 +01:00
parent bf134e6979
commit a77c9225df
1 changed files with 48 additions and 22 deletions
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src/drivers/ms5611/ms5611.cpp
+48 -22
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@@ -91,12 +91,13 @@ static const int ERROR = -1;
/* internal conversion time: 9.17 ms, so should not be read at rates higher than 100 Hz */
#define MS5611_CONVERSION_INTERVAL 10000 /* microseconds */
#define MS5611_MEASUREMENT_RATIO 3 /* pressure measurements per temperature measurement */
#define MS5611_BARO_DEVICE_PATH "/dev/ms5611"
#define MS5611_BARO_DEVICE_PATH_EXT "/dev/ms5611_ext"
#define MS5611_BARO_DEVICE_PATH_INT "/dev/ms5611_int"
class MS5611 : public device::CDev
{
public:
MS5611(device::Device *interface, ms5611::prom_u &prom_buf);
MS5611(device::Device *interface, ms5611::prom_u &prom_buf, const char* path);
~MS5611();
virtual int init();
@@ -195,8 +196,8 @@ protected:
*/
extern "C" __EXPORT int ms5611_main(int argc, char *argv[]);
MS5611::MS5611(device::Device *interface, ms5611::prom_u &prom_buf) :
CDev("MS5611", MS5611_BARO_DEVICE_PATH),
MS5611::MS5611(device::Device *interface, ms5611::prom_u &prom_buf, const char* path) :
CDev("MS5611", path),
_interface(interface),
_prom(prom_buf.s),
_measure_ticks(0),
@@ -224,7 +225,7 @@ MS5611::~MS5611()
stop_cycle();
if (_class_instance != -1)
unregister_class_devname(MS5611_BARO_DEVICE_PATH, _class_instance);
unregister_class_devname(get_devname(), _class_instance);
/* free any existing reports */
if (_reports != nullptr)
@@ -792,10 +793,10 @@ MS5611 *g_dev_ext = nullptr;
MS5611 *g_dev_int = nullptr;
void start(bool external_bus);
void test();
void reset();
void test(bool external_bus);
void reset(bool external_bus);
void info();
void calibrate(unsigned altitude);
void calibrate(unsigned altitude, bool external_bus);
void usage();
/**
@@ -879,27 +880,34 @@ start(bool external_bus)
}
if (external_bus) {
g_dev_ext = new MS5611(interface, prom_buf);
g_dev_ext = new MS5611(interface, prom_buf, MS5611_BARO_DEVICE_PATH_EXT);
if (g_dev_ext == nullptr) {
delete interface;
errx(1, "failed to allocate driver");
}
if (g_dev_ext->init() != OK)
goto fail;
fd = open(MS5611_BARO_DEVICE_PATH_EXT, O_RDONLY);
} else {
g_dev_int = new MS5611(interface, prom_buf);
g_dev_int = new MS5611(interface, prom_buf, MS5611_BARO_DEVICE_PATH_INT);
if (g_dev_int == nullptr) {
delete interface;
errx(1, "failed to allocate driver");
}
if (g_dev_int->init() != OK)
goto fail;
fd = open(MS5611_BARO_DEVICE_PATH_INT, O_RDONLY);
}
/* set the poll rate to default, starts automatic data collection */
fd = open(MS5611_BARO_DEVICE_PATH, O_RDONLY);
if (fd < 0) {
warnx("can't open baro device");
goto fail;
@@ -932,16 +940,22 @@ fail:
* and automatic modes.
*/
void
test()
test(bool external_bus)
{
struct baro_report report;
ssize_t sz;
int ret;
int fd = open(MS5611_BARO_DEVICE_PATH, O_RDONLY);
int fd;
if (external_bus) {
fd = open(MS5611_BARO_DEVICE_PATH_EXT, O_RDONLY);
} else {
fd = open(MS5611_BARO_DEVICE_PATH_INT, O_RDONLY);
}
if (fd < 0)
err(1, "%s open failed (try 'ms5611 start' if the driver is not running)", MS5611_BARO_DEVICE_PATH);
err(1, "open failed (try 'ms5611 start' if the driver is not running)");
/* do a simple demand read */
sz = read(fd, &report, sizeof(report));
@@ -995,9 +1009,15 @@ test()
* Reset the driver.
*/
void
reset()
reset(bool external_bus)
{
int fd = open(MS5611_BARO_DEVICE_PATH, O_RDONLY);
int fd;
if (external_bus) {
fd = open(MS5611_BARO_DEVICE_PATH_EXT, O_RDONLY);
} else {
fd = open(MS5611_BARO_DEVICE_PATH_INT, O_RDONLY);
}
if (fd < 0)
err(1, "failed ");
@@ -1037,16 +1057,22 @@ info()
* Calculate actual MSL pressure given current altitude
*/
void
calibrate(unsigned altitude)
calibrate(unsigned altitude, bool external_bus)
{
struct baro_report report;
float pressure;
float p1;
int fd = open(MS5611_BARO_DEVICE_PATH, O_RDONLY);
int fd;
if (external_bus) {
fd = open(MS5611_BARO_DEVICE_PATH_EXT, O_RDONLY);
} else {
fd = open(MS5611_BARO_DEVICE_PATH_INT, O_RDONLY);
}
if (fd < 0)
err(1, "%s open failed (try 'ms5611 start' if the driver is not running)", MS5611_BARO_DEVICE_PATH);
err(1, "open failed (try 'ms5611 start' if the driver is not running)");
/* start the sensor polling at max */
if (OK != ioctl(fd, SENSORIOCSPOLLRATE, SENSOR_POLLRATE_MAX))
@@ -1141,13 +1167,13 @@ ms5611_main(int argc, char *argv[])
* Test the driver/device.
*/
if (!strcmp(verb, "test"))
ms5611::test();
ms5611::test(external_bus);
/*
* Reset the driver.
*/
if (!strcmp(verb, "reset"))
ms5611::reset();
ms5611::reset(external_bus);
/*
* Print driver information.
@@ -1164,7 +1190,7 @@ ms5611_main(int argc, char *argv[])
long altitude = strtol(argv[optind+1], nullptr, 10);
ms5611::calibrate(altitude);
ms5611::calibrate(altitude, external_bus);
}
errx(1, "unrecognised command, try 'start', 'test', 'reset' or 'info'");