From 175ca2ee09698f554993fb2ff440cad1c9af89f4 Mon Sep 17 00:00:00 2001
From: Meco Man <920369182@qq.com>
Date: Fri, 22 Apr 2022 18:59:27 -0400
Subject: [dac] add get resolution method

---
 bsp/stm32/libraries/HAL_Drivers/drv_dac.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'bsp')

diff --git a/bsp/stm32/libraries/HAL_Drivers/drv_dac.c b/bsp/stm32/libraries/HAL_Drivers/drv_dac.c
index 4916f65513..a3ea4a58c6 100644
--- a/bsp/stm32/libraries/HAL_Drivers/drv_dac.c
+++ b/bsp/stm32/libraries/HAL_Drivers/drv_dac.c
@@ -105,6 +105,18 @@ static rt_err_t stm32_dac_disabled(struct rt_dac_device *device, rt_uint32_t cha
     return RT_EOK;
 }
 
+static rt_uint8_t stm32_dac_get_resolution(struct rt_dac_device *device)
+{
+    DAC_HandleTypeDef *stm32_dac_handler;
+
+    RT_ASSERT(device != RT_NULL);
+
+    stm32_dac_handler = device->parent.user_data;
+    (void)stm32_dac_handler;
+
+    return 12; /* TODO */
+}
+
 static rt_err_t stm32_set_dac_value(struct rt_dac_device *device, rt_uint32_t channel, rt_uint32_t *value)
 {
     uint32_t dac_channel;
@@ -162,6 +174,7 @@ static const struct rt_dac_ops stm_dac_ops =
     .disabled = stm32_dac_disabled,
     .enabled  = stm32_dac_enabled,
     .convert  = stm32_set_dac_value,
+    .get_resolution = stm32_dac_get_resolution,
 };
 
 static int stm32_dac_init(void)
-- 
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