Updated PX4 use / API of low level GPIO and other hardware-centric system facilities

src/systemcmds/i2c/i2c.c

@@ -73,7 +73,7 @@ static struct i2c_dev_s *i2c;
 int i2c_main(int argc, char *argv[])
 {
 	/* find the right I2C */
-	i2c = up_i2cinitialize(PX4_I2C_BUS_ONBOARD);
+	i2c = px4_i2cbus_initialize(PX4_I2C_BUS_ONBOARD);
 
 	if (i2c == NULL) {
 		errx(1, "failed to locate I2C bus");

src/systemcmds/mtd/mtd.c

@@ -177,7 +177,7 @@ static void
 ramtron_attach(void)
 {
 	/* initialize the right spi */
-	struct spi_dev_s *spi = up_spiinitialize(PX4_SPI_BUS_RAMTRON);
+	struct spi_dev_s *spi = px4_spibus_initialize(PX4_SPI_BUS_RAMTRON);
 
 	/* this resets the spi bus, set correct bus speed again */
 	SPI_SETFREQUENCY(spi, 10 * 1000 * 1000);
@@ -225,7 +225,7 @@ static void
 at24xxx_attach(void)
 {
 	/* find the right I2C */
-	struct i2c_dev_s *i2c = up_i2cinitialize(PX4_I2C_BUS_ONBOARD);
+	struct i2c_dev_s *i2c = px4_i2cbus_initialize(PX4_I2C_BUS_ONBOARD);
 	/* this resets the I2C bus, set correct bus speed again */
 	I2C_SETFREQUENCY(i2c, 400000);
 

src/systemcmds/tests/test_time.c

@@ -121,12 +121,12 @@ int test_time(int argc, char *argv[])
 	delta = 0;
 
 	for (unsigned i = 0; i < 100; i++) {
-		uint32_t flags = irqsave();
+		uint32_t flags = px4_enter_critical_section();
 
 		h = hrt_absolute_time();
 		c = cycletime();
 
-		irqrestore(flags);
+		px4_leave_critical_section(flags);
 
 		delta += h - c;
 	}
@@ -138,12 +138,12 @@ int test_time(int argc, char *argv[])
 
 		usleep(rand());
 
-		uint32_t flags = irqsave();
+		uint32_t flags = px4_enter_critical_section();
 
 		c = cycletime();
 		h = hrt_absolute_time();
 
-		irqrestore(flags);
+		px4_leave_critical_section(flags);
 
 		delta = abs(h - c);
 		deltadelta = abs(delta - lowdelta);

src/systemcmds/usb_connected/usb_connected.c

@@ -52,5 +52,5 @@ __EXPORT int usb_connected_main(int argc, char *argv[]);
 int
 usb_connected_main(int argc, char *argv[])
 {
-	return stm32_gpioread(GPIO_OTGFS_VBUS) ? 0 : 1;
+	return px4_arch_gpioread(GPIO_OTGFS_VBUS) ? 0 : 1;
 }