ST STM32L0x3 User Manual

RM0367 Rev 7 1003/1043
RM0367 Code examples
1020
TIMx->ARR = 7; /* (2) */
TIMx->CCR1 = 5; /* (3) */
TIMx->CCMR1 |= TIM_CCMR1_OC1M_2 | TIM_CCMR1_OC1M_1 | TIM_CCMR1_OC1M_0
| TIM_CCMR1_OC1PE
#if PULSE_WITHOUT_DELAY > 0
| TIM_CCMR1_OC1FE
#endif
; /* (4) */
TIMx->CCER |= TIM_CCER_CC1E; /* (5) */
TIMx->CR1 |= TIM_CR1_OPM | TIM_CR1_ARPE; /* (6) */
A.11.17 Timer prescaling another timer code example
/* (1) Select Update Event as Trigger output (TRG0) by writing MMS = 010
in TIMx_CR2. */
/* (2) Configure TIMy in slave mode using ITR1 as internal trigger
by writing TS = 000 in TIMy_SMCR (reset value)
Configure TIMy in external clock mode 1, by writing SMS=111 in the
TIMy_SMCR register. */
/* (3) Set TIMx prescaler to 15999 in order to get an increment each 1ms */
/* (4) Set TIMx Autoreload to 999 in order to get an overflow (so an UEV)
each second */
/* (5) Set TIMx Autoreload to 24*3600-1 in order to get an overflow
each 24-hour */
/* (6) Enable the counter by writing CEN=1 in the TIMx_CR1 register. */
/* (7) Enable the counter by writing CEN=1 in the TIMy_CR1 register. */
TIMx->CR2 |= TIM_CR2_MMS_1; /* (1 */
TIMy->SMCR |= TIM_SMCR_SMS_2 | TIM_SMCR_SMS_1 | TIM_SMCR_SMS_0; /* (2) */
TIMx->PSC = 15999; /* (3) */
TIMx->ARR = 999; /* (4) */
TIMy->ARR = (24 * 3600) - 1; /* (5) */
TIMx->CR1 |= TIM_CR1_CEN; /* (6) */
TIMy->CR1 |= TIM_CR1_CEN; /* (7) */
A.11.18 Timer enabling another timer code example
/* (1) Configure Timer x master mode to send its Output Compare 1
Reference (OC1REF)
signal as trigger output (MMS=100 in the TIMx_CR2 register). */
/* (2) Configure the Timer x OC1REF waveform (TIMx_CCMR1 register)
Channel 1 is in PWM mode 1 when the counter is less than the
capture/compare
register (write OC1M = 110) */
/* (3) Configure TIMy in slave mode using ITR1 as internal trigger
by writing TS = 000 in TIMy_SMCR (reset value)
Configure TIMy in gated mode, by writing SMS=101 in the

ST STM32L0x3 Specifications

General

Brand	ST
Model	STM32L0x3
Category	Microcontrollers
Language	English