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ll40ls: do not start driver if already started

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tumbili
2015-09-09 22:58:51 +02:00
parent b3fa497064
commit 10171df59a
1 changed files with 4 additions and 1 deletions
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src/drivers/ll40ls/ll40ls.cpp
+4 -1
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@@ -113,6 +113,10 @@ LidarLite * get_dev(const bool use_i2c, const int bus) {
*/ */
void start(const bool use_i2c, const int bus) void start(const bool use_i2c, const int bus)
{ {
if (g_dev_int != nullptr || g_dev_ext != nullptr || g_dev_pwm != nullptr) {
errx(1,"driver already started");
}
if (use_i2c) { if (use_i2c) {
/* create the driver, attempt expansion bus first */ /* create the driver, attempt expansion bus first */
if (bus == -1 || bus == PX4_I2C_BUS_EXPANSION) { if (bus == -1 || bus == PX4_I2C_BUS_EXPANSION) {
@@ -464,7 +468,6 @@ ll40ls_main(int argc, char *argv[])
/* Start/load the driver. */ /* Start/load the driver. */
if (!strcmp(verb, "start")) { if (!strcmp(verb, "start")) {
ll40ls::start(use_i2c, bus); ll40ls::start(use_i2c, bus);
} }