Posted on February 26, 2014 at 19:48Hello everyone
I am using ADC1 with the following config:
ADC1_Init ( ADC1_CONVERSIONMODE_SINGLE, ADC1_CHANNEL_6, ADC1_PRESSEL_FCPU_D6, ADC1_EXTTRIG_TIM , ENABLE, ADC1_ALIGN_RIGHT, ADC1_SCHMITTTRIG_ALL, DISABLE );
ADC1_ScanModeCmd ( ENABLE );
ADC1_ITConfig ( ADC1_IT_EOCIE, ENABLE );
ADC1_DataBufferCmd ( ENABLE );
ADC1_Cmd ( ENABLE );
with the following clock config:
CLK_SYSCLKConfig(CLK_PRESCALER_HSIDIV1); //select Clock = 16 MHz
CLK_HSICmd(ENABLE);
The device is running correctly at start, but after a short while, say 1 minute, the interrupt handler of ADC1 seems not working, I mean it returns 0. all other functions are doing their job correctly at the same time. When I enter debug mode, ADC1 buffered values works correctly. I changed
ADC1_PRESSEL_FCPU_D6
to
ADC1_PRESSEL_FCPU_D18
and the problem disappeared. It is mentioned in the datasheet that the ADC clock can be increased up to 6MHz, and this is considered by the value ADC1_PRESSEL_FCPU_D6
So what is the problem? have you had such experience?
#adc-stm8
