altos: Update sensor data atomically

[fw/altos] / src / drivers / ao_hmc5883.c

diff --git a/src/drivers/ao_hmc5883.c b/src/drivers/ao_hmc5883.c
index f668fb66e7435f720a08d20cb8d87291326ebb48..9f1131d6b607671883f2c933a35279e5ae59539b 100644 (file)
--- a/src/drivers/ao_hmc5883.c
+++ b/src/drivers/ao_hmc5883.c
@@ -126,13 +126,15 @@ struct ao_hmc5883_sample ao_hmc5883_current;
 static void
 ao_hmc5883(void)
 {
+       struct ao_hmc5883_sample        sample;
        ao_hmc5883_setup();
        for (;;) {
-               ao_hmc5883_sample(&ao_hmc5883_current);
-               ao_arch_critical(
-                       AO_DATA_PRESENT(AO_DATA_HMC5883);
-                       AO_DATA_WAIT();
-                       );
+               ao_hmc5883_sample(&sample);
+               ao_arch_block_interrupts();
+               ao_hmc5883_current = sample;
+               AO_DATA_PRESENT(AO_DATA_HMC5883);
+               AO_DATA_WAIT();
+               ao_arch_release_interrupts();
        }
 }