void BIAS_Clk(void){
if (DAC_GetDataOutputValue(DAC_Channel_1) ^ BIAS_DAC_Value)
{
BIAS_SetValue(BIAS_DAC_Value);
BIAS_DAC_Value = DAC_GetDataOutputValue(DAC_Channel_1);
}
}
static inline int dac_read(dac_t *obj) {
if (obj->pin == PA_4) {
return (int)DAC_GetDataOutputValue(DAC_Channel_1);
}
if (obj->pin == PA_5) {
return (int)DAC_GetDataOutputValue(DAC_Channel_2);
}
return 0;
}
void BIAS_SetValue(uint16_t val_dac){
if (val_dac < 4096) DAC_SetChannel1Data(DAC_Align_12b_R, val_dac);
else DAC_SetChannel1Data(DAC_Align_12b_R, 4095);
DAC_SoftwareTriggerCmd(DAC_Channel_1, ENABLE);
BIAS_DAC_Value = DAC_GetDataOutputValue(DAC_Channel_1);
}
int GetAnalogOutput(int dacNumber)
{
assert_param(IS_DAC_ID_VALID(dacNumber));
uint16_t dacValue;
switch(dacNumber)
{
case DAC_1:
dacValue = DAC_GetDataOutputValue(DAC_Channel_1);
break;
case DAC_2:
dacValue = DAC_GetDataOutputValue(DAC_Channel_2);
break;
}
return (int)dacValue;
}
void BIAS_Config(void){
DAC_InitTypeDef DAC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
DAC_DeInit();
/* DAC Periph clock enable */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_DAC, ENABLE);
/* DAC channel1 Configuration */
DAC_InitStructure.DAC_Trigger = DAC_Trigger_Software;
DAC_InitStructure.DAC_WaveGeneration = DAC_WaveGeneration_None;
DAC_InitStructure.DAC_LFSRUnmask_TriangleAmplitude = DAC_TriangleAmplitude_1;
DAC_InitStructure.DAC_OutputBuffer = DAC_OutputBuffer_Enable;
DAC_Init(DAC_Channel_1, &DAC_InitStructure);
/* Enable DAC Channel1: Once the DAC channel1 is enabled, PA.04 is
automatically connected to the DAC converter. */
DAC_Cmd(DAC_Channel_1, ENABLE);
/* Set DAC Channel1 DHR12L register */
//DAC_SetChannel1Data(DAC_Align_12b_L, 0x7FF0);
//DAC_SetChannel1Data(DAC_Align_12b_L, 0x9B20);
//DAC_SetChannel1Data(DAC_Align_12b_R, 0x04D9);
//BIAS_DAC_Value = DAC_GetDataOutputValue(DAC_Channel_1);
DAC_SetChannel1Data(DAC_Align_12b_R, DAC_OUT_BOOT);
//BIAS_DAC_Value = DAC_GetDataOutputValue(DAC_Channel_1);
DAC_SoftwareTriggerCmd(DAC_Channel_1, ENABLE);
BIAS_DAC_Value = DAC_GetDataOutputValue(DAC_Channel_1);
/* Once the DAC channel is enabled, the corresponding GPIO pin is automatically
connected to the DAC converter. In order to avoid parasitic consumption,
the GPIO pin should be configured in analog */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Used peripherals clock enable -------------------------------------------*/
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);
/* configure PC9 as output push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_10MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(GPIOC, &GPIO_InitStructure);
GPIO_SetBits(GPIOC, GPIO_Pin_9);
}
static inline int dac_read(dac_t *obj) {
DAC_TypeDef *dac = (DAC_TypeDef *)(obj->dac);
return (int)DAC_GetDataOutputValue(dac, DAC_Channel_1);
}
