[stm32][dac] add comment

2022-05-21 01:27:45 -04:00 · 2022-05-21 01:27:45 -04:00 · 996add96d6
parent 4ac54cfd60
commit 996add96d6
1 changed files with 2 additions and 1 deletions
--- a/bsp/stm32/libraries/HAL_Drivers/drv_dac.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_dac.c
@ -114,7 +114,8 @@ static rt_uint8_t stm32_dac_get_resolution(struct rt_dac_device *device)
    stm32_dac_handler = device->parent.user_data;
    (void)stm32_dac_handler;

-    return 12; /* TODO */
+    /* Only has supported DAC_ALIGN_12B_R, so it will return 12 bits */
+    return 12;
 }

 static rt_err_t stm32_set_dac_value(struct rt_dac_device *device, rt_uint32_t channel, rt_uint32_t *value)