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Diffstat (limited to 'os/hal/platforms/STM32/i2c_lld.h')
-rw-r--r--os/hal/platforms/STM32/i2c_lld.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/os/hal/platforms/STM32/i2c_lld.h b/os/hal/platforms/STM32/i2c_lld.h
index 2659e4475..8285cddcf 100644
--- a/os/hal/platforms/STM32/i2c_lld.h
+++ b/os/hal/platforms/STM32/i2c_lld.h
@@ -198,7 +198,8 @@ struct I2CDriver{
/* Wait until BUSY flag is reset: a STOP has been generated on the bus
- * signaling the end of transmission
+ * signaling the end of transmission. Normally this wait function
+ * does not block thread, only if slave not response it does.
*/
#define i2c_lld_wait_bus_free(i2cp) { \
uint32_t tmo = 0xffff; \