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periph_conf.h File Reference

Peripheral MCU configuration for the nucleo-l476rg board. More...

Detailed Description

#include "periph_cpu.h"
#include "clk_conf.h"
#include "cfg_i2c1_pb8_pb9.h"
#include "cfg_rtt_default.h"
+ Include dependency graph for periph_conf.h:

Go to the source code of this file.


DMA streams configuration

#define DMA_0_ISR   isr_dma1_channel2
#define DMA_1_ISR   isr_dma1_channel3
#define DMA_2_ISR   isr_dma1_channel4
#define DMA_3_ISR   isr_dma1_channel7
#define DMA_NUMOF   ARRAY_SIZE(dma_config)
static const dma_conf_t dma_config []

Timer configuration

#define TIMER_0_ISR   isr_tim5
#define TIMER_NUMOF   ARRAY_SIZE(timer_config)
static const timer_conf_t timer_config []

UART configuration

#define UART_0_ISR   (isr_usart2)
#define UART_1_ISR   (isr_usart3)
#define UART_2_ISR   (isr_usart1)
#define UART_NUMOF   ARRAY_SIZE(uart_config)
static const uart_conf_t uart_config []

PWM configuration

#define PWM_NUMOF   ARRAY_SIZE(pwm_config)
static const pwm_conf_t pwm_config []

SPI configuration

#define SPI_NUMOF   ARRAY_SIZE(spi_config)
static const spi_conf_t spi_config []
#define VBAT_ADC   ADC_LINE(6)
 VBAT ADC line.
#define ADC_NUMOF   ARRAY_SIZE(adc_config)
static const adc_conf_t adc_config []
 ADC configuration.

Macro Definition Documentation


#define ADC_NUMOF   ARRAY_SIZE(adc_config)

Definition at line 248 of file periph_conf.h.



Definition at line 28 of file periph_conf.h.


#define DMA_0_ISR   isr_dma1_channel2

Definition at line 51 of file periph_conf.h.


#define DMA_1_ISR   isr_dma1_channel3

Definition at line 52 of file periph_conf.h.


#define DMA_2_ISR   isr_dma1_channel4

Definition at line 53 of file periph_conf.h.


#define DMA_3_ISR   isr_dma1_channel7

Definition at line 54 of file periph_conf.h.


#define DMA_NUMOF   ARRAY_SIZE(dma_config)

Definition at line 56 of file periph_conf.h.


#define PWM_NUMOF   ARRAY_SIZE(pwm_config)

Definition at line 177 of file periph_conf.h.


#define SPI_NUMOF   ARRAY_SIZE(spi_config)

Definition at line 206 of file periph_conf.h.


#define TIMER_0_ISR   isr_tim5

Definition at line 73 of file periph_conf.h.


#define TIMER_NUMOF   ARRAY_SIZE(timer_config)

Definition at line 75 of file periph_conf.h.


#define UART_0_ISR   (isr_usart2)

Definition at line 133 of file periph_conf.h.


#define UART_1_ISR   (isr_usart3)

Definition at line 134 of file periph_conf.h.


#define UART_2_ISR   (isr_usart1)

Definition at line 135 of file periph_conf.h.


#define UART_NUMOF   ARRAY_SIZE(uart_config)

Definition at line 137 of file periph_conf.h.


#define VBAT_ADC   ADC_LINE(6)

VBAT ADC line.

Definition at line 247 of file periph_conf.h.

Variable Documentation

◆ adc_config

const adc_conf_t adc_config[]
Initial value:
= {
{GPIO_PIN(PORT_A, 0), 0, 5},
{GPIO_PIN(PORT_A, 1), 0, 6},
{GPIO_PIN(PORT_A, 4), 1, 9},
{GPIO_PIN(PORT_B, 0), 1, 15},
{GPIO_PIN(PORT_C, 1), 2, 2},
{GPIO_PIN(PORT_C, 0), 2, 1},
{GPIO_UNDEF, 0, 18},
port B
Definition periph_cpu.h:48
port C
Definition periph_cpu.h:49
port A
Definition periph_cpu.h:47
#define GPIO_PIN(x, y)
Define a CPU specific GPIO pin generator macro.
Definition periph_cpu.h:46
#define GPIO_UNDEF
Definition of a fitting UNDEF value.

ADC configuration.

Note that we do not configure all ADC channels, and not in the STM32L476RG order. Instead, we just define 6 ADC channels, for the Nucleo Arduino header pins A0-A5 and the internal VBAT channel.

To find appropriate device and channel find in the board manual, table showing pin assignments and information about ADC - a text similar to ADC[X]_IN[Y], where: [X] - describes used device - indexed from 0, for example ADC1_IN10 is device 0, [Y] - describes used channel - indexed from 1, for example ADC1_IN10 is channel 10

For Nucleo-L476RG this information is in board manual, Table 23, page 52.

VBAT is connected ADC1_IN18 or ADC3_IN18 and a voltage divider is used, so that only 1/3 of the actual VBAT is measured. This allows for a supply voltage higher than the reference voltage.

For Nucleo-L476RG more information is provided in MCU datasheet, in section 3.15.3 - Vbat battery voltage monitoring, page 42.

Definition at line 237 of file periph_conf.h.

◆ dma_config

const dma_conf_t dma_config[]
Initial value:
= {
{ .stream = 1 },
{ .stream = 2 },
{ .stream = 3 },
{ .stream = 6 },

Definition at line 44 of file periph_conf.h.

◆ pwm_config

const pwm_conf_t pwm_config[]

Definition at line 144 of file periph_conf.h.

◆ spi_config

const spi_conf_t spi_config[]
Initial value:
= {
.dev = SPI1,
.mosi_pin = GPIO_PIN(PORT_A, 7),
.miso_pin = GPIO_PIN(PORT_A, 6),
.sclk_pin = GPIO_PIN(PORT_A, 5),
.cs_pin = SPI_CS_UNDEF,
.mosi_af = GPIO_AF5,
.miso_af = GPIO_AF5,
.sclk_af = GPIO_AF5,
.cs_af = GPIO_AF5,
.rccmask = RCC_APB2ENR_SPI1EN,
.apbbus = APB2,
use alternate function 5
Definition cpu_gpio.h:107
#define SPI_CS_UNDEF
Define value for unused CS line.
Definition periph_cpu.h:363
@ APB2
Advanced Peripheral Bus 2
Definition periph_cpu.h:80

Definition at line 184 of file periph_conf.h.

◆ timer_config

const timer_conf_t timer_config[]
Initial value:
= {
.dev = TIM5,
.max = 0xffffffff,
.rcc_mask = RCC_APB1ENR1_TIM5EN,
.bus = APB1,
.irqn = TIM5_IRQn
@ APB1
Advanced Peripheral Bus 1
Definition periph_cpu.h:79

Definition at line 63 of file periph_conf.h.

◆ uart_config

const uart_conf_t uart_config[]

Definition at line 82 of file periph_conf.h.