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[dac] add get resolution method

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This commit is contained in:
Meco Man
2022-04-22 18:59:27 -04:00
committed by guo
parent 778be73cac
commit 175ca2ee09
4 changed files with 29 additions and 8 deletions
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components/drivers/include/drivers/dac.h
+2
View File
@@ -18,6 +18,7 @@ struct rt_dac_ops
rt_err_t (*disabled)(struct rt_dac_device *device, rt_uint32_t channel);
rt_err_t (*enabled)(struct rt_dac_device *device, rt_uint32_t channel);
rt_err_t (*convert)(struct rt_dac_device *device, rt_uint32_t channel, rt_uint32_t *value);
rt_uint8_t (*get_resolution)(struct rt_dac_device *device);
};
struct rt_dac_device
@@ -31,6 +32,7 @@ typedef enum
{
RT_DAC_CMD_ENABLE = RT_DEVICE_CTRL_BASE(DAC) + 0,
RT_DAC_CMD_DISABLE = RT_DEVICE_CTRL_BASE(DAC) + 1,
RT_DAC_CMD_GET_RESOLUTION = RT_DEVICE_CTRL_BASE(DAC) + 2,
} rt_dac_cmd_t;
rt_err_t rt_hw_dac_register(rt_dac_device_t dac,const char *name, const struct rt_dac_ops *ops, const void *user_data);
components/drivers/misc/adc.c
+1 -1
View File
@@ -58,7 +58,7 @@ static rt_err_t _adc_control(rt_device_t dev, int cmd, void *args)
if(resolution != 0)
{
*((rt_uint8_t*)args) = resolution;
LOG_D("ADC resolution:%d", resolution);
LOG_D("resolution: %d bits", resolution);
result = RT_EOK;
}
}
components/drivers/misc/dac.c
+13 -7
View File
@@ -40,21 +40,27 @@ static rt_size_t _dac_write(rt_device_t dev, rt_off_t pos, const void *buffer, r
static rt_err_t _dac_control(rt_device_t dev, int cmd, void *args)
{
rt_err_t result = RT_EOK;
rt_err_t result = -RT_EINVAL;
rt_dac_device_t dac = (struct rt_dac_device *)dev;
if (dac->ops->enabled == RT_NULL)
{
return -RT_ENOSYS;
}
if (cmd == RT_DAC_CMD_ENABLE)
if (cmd == RT_DAC_CMD_ENABLE && dac->ops->enabled)
{
result = dac->ops->enabled(dac, (rt_uint32_t)args);
}
else if (cmd == RT_DAC_CMD_DISABLE)
else if (cmd == RT_DAC_CMD_DISABLE && dac->ops->enabled)
{
result = dac->ops->disabled(dac, (rt_uint32_t)args);
}
else if (cmd == RT_DAC_CMD_GET_RESOLUTION && dac->ops->get_resolution)
{
rt_uint8_t resolution = dac->ops->get_resolution(dac);
if(resolution != 0)
{
*((rt_uint8_t*)args) = resolution;
LOG_D("resolution: %d bits", resolution);
result = RT_EOK;
}
}
return result;
}