ST STM32L0x3 User Manual

RM0367 Rev 7 991/1043
RM0367 Code examples
1020
ADC1->CFGR1 |= ADC_CFGR1_EXTEN_0 | ADC_CFGR1_EXTSEL_2 \
| ADC_CFGR1_SCANDIR | ADC_CFGR1_AUTOFF; /* (2) */
ADC1->CHSELR = ADC_CHSELR_CHSEL4 | ADC_CHSELR_CHSEL9 \
| ADC_CHSELR_CHSEL17; /* (3) */
ADC1->SMPR |= ADC_SMPR_SMP_0 | ADC_SMPR_SMP_1 | ADC_SMPR_SMP_2; /* (4) */
ADC1->IER = ADC_IER_EOCIE | ADC_IER_EOSEQIE | ADC_IER_OVRIE; /* (5) */
ADC->CCR |= ADC_CCR_VREFEN; /* (6) */
A.8.13 Auto off and wait mode sequence code example
/* (1) Select HSI16 by writing 00 in CKMODE (reset value) */
/* (2) Select the continuous mode, the wait mode and the Auto off */
/* (3) Select CHSEL4, CHSEL9 and CHSEL17 */
/* (4) Select a sampling mode of 111 i.e. 239.5 ADC clk to be greater
than 5us */
/* (5) Enable interrupt on overrrun */
/* (6) Wake-up the VREFINT (only for Temp sensor and VRefInt) */
//ADC1->CFGR2 &= ~ADC_CFGR2_CKMODE; /* (1) */
ADC1->CFGR1 |= ADC_CFGR1_CONT | ADC_CFGR1_WAIT | ADC_CFGR1_AUTOFF;/* (2) */
ADC1->CHSELR = ADC_CHSELR_CHSEL4 | ADC_CHSELR_CHSEL9 \
| ADC_CHSELR_CHSEL17; /* (3) */
ADC1->SMPR |= ADC_SMPR_SMP_0 | ADC_SMPR_SMP_1 | ADC_SMPR_SMP_2; /* (4) */
ADC1->IER = ADC_IER_OVRIE; /* (5) */
ADC->CCR |= ADC_CCR_VREFEN; /* (6) */
A.8.14 Analog watchdog code example
/* Define the upper limit 15% above the factory value
the value is adapted according to the application power supply
versus the factory calibration power supply */
uint16_t vrefint_high = (*VREFINT_CAL_ADDR)* VDD_CALIB / VDD_APPLI * 115 /
100;
/* Define the lower limit 15% below the factory value
the value is adapted according to the application power supply
versus the factory calibration power supply */
uint16_t vrefint_low = (*VREFINT_CAL_ADDR) * VDD_CALIB / VDD_APPLI * 85 /
100;
/* (1) Select HSI16 by writing 00 in CKMODE (reset value) */
/* (2) Select the continuous mode
and configure the Analog watchdog to monitor only CH17 */
/* (3) Define analog watchdog range : 16b-MSW is the high limit
and 16b-LSW is the low limit */
/* (4) Select CHSEL4, CHSEL9 and CHSEL17 */
/* (5) Select a sampling mode of 111 i.e. 239.5 ADC clk to be greater
than 5us */

ST STM32L0x3 Specifications

General

Brand	ST
Model	STM32L0x3
Category	Microcontrollers
Language	English