In a recent project, I used the DAC function of the STM8L151 chip. After referring to the routines on the official website, the DA output was still incorrect.
Later, I searched for information from other great programmers on Baidu and found that one of them had an extra statement to turn on the comparator clock. I also added this statement to the code, and the result was correct.
Below is the DAC initialization code
void DAC_Config(void)
{
CLK_PeripheralClockConfig(CLK_Peripheral_DAC, ENABLE); //Turn on DAC power
CLK_PeripheralClockConfig(CLK_Peripheral_COMP,ENABLE); //Note that COMP must be turned on, otherwise the RI register cannot be configured. The reason is not clear.
// RI->IOCMR3 |= 0X10;
SYSCFG_RIDeInit(); //port selection initialization
SYSCFG_RIIOSwitchConfig(RI_IOSwitch_14,ENABLE); //Select the specified channel
DAC_Init(DAC_Channel_1,DAC_Trigger_None,DAC_OutputBuffer_Disable);
// DAC_SetChannel1Data(DAC_Align_12b_R,2048);
DAC_Cmd(DAC_Channel_1,DISABLE);
nop();
}
da can be output normally
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