ST STM32L0x3 User Manual

Code examples RM0367
994/1043 RM0367 Rev 7
DAC->CR |= DAC_CR_DMAUDRIE1 | DAC_CR_DMAEN1 | DAC_CR_BOFF1
| DAC_CR_TEN1 | DAC_CR_EN1; /* (2) */
/* (1) Enable the peripheral clock on DMA */
/* (2) Remap DAC on DMA channel 2 */
/* (3) Configure the peripheral data register address */
/* (4) Configure the memory address */
/* (5) Configure the number of DMA tranfer to be performs
on DMA channel x */
/* (6) Configure increment, size (16-bits), interrupts, transfer
from memory to peripheral and circular mode */
/* (7) Enable DMA Channel x */
RCC->AHBENR |= RCC_AHBENR_DMA1EN; /* (1) */
DMA1_CSELR->CSELR |= (uint32_t)(9 << 4); /* (2) */
DMA1_Channel2->CPAR = (uint32_t) (&(DAC->DHR12R1)); /* (3) */
DMA1_Channel2->CMAR = (uint32_t)(sin_data); /* (4) */
DMA1_Channel2->CNDTR = SIN_ARRAY_SIZE; /* (5) */
DMA1_Channel2->CCR |= DMA_CCR_MINC | DMA_CCR_MSIZE_0 | DMA_CCR_PSIZE_0 \
| DMA_CCR_DIR | DMA_CCR_TEIE | DMA_CCR_CIRC;
/* (6) */
DMA1_Channel2->CCR |= DMA_CCR_EN; /* (7) */
/* Configure NVIC for DMA */
/* (1) Enable Interrupt on DMA Channels x */
/* (2) Set priority for DMA Channels x */
NVIC_EnableIRQ(DMA1_Channel2_3_IRQn); /* (1) */
NVIC_SetPriority(DMA1_Channel2_3_IRQn,3); /* (2) */
A.10 TSC code example
A.10.1 TSC configuration code example
/* Configure TSC */
/* With a Charge transfer cycle around 8µs */
/* (1)Select fPGCLK = fHCLK/32
Set pulse high = 2xtPGCLK,Master
Set pulse low = 2xtPGCLK
Set Max count value = 16383 pulses
Enable TSC */
/* (2) Disable hysteresis */
/* (3) Enable end of acquisition IT */
/* (4) Sampling enabled, G2IO4 */
/* (5) Channel enabled, G2IO3 */
/* (6) Enable group, G2 */
TSC->CR = TSC_CR_PGPSC_2 | TSC_CR_PGPSC_0 | TSC_CR_CTPH_0 | TSC_CR_CTPL_0
| TSC_CR_MCV_2 | TSC_CR_MCV_1 | TSC_CR_TSCE; /* (1) */

ST STM32L0x3 Specifications

General

Brand	ST
Model	STM32L0x3
Category	Microcontrollers
Language	English