periph_conf.h File Reference

Peripheral MCU configuration for the nucleo-l452re board. More...

Detailed Description

Peripheral MCU configuration for the nucleo-l452re board.

Author

Hauke Petersen hauke.nosp@m..pet.nosp@m.ersen.nosp@m.@fu-.nosp@m.berli.nosp@m.n.de

Alexandre Abadie alexa.nosp@m.ndre.nosp@m..abad.nosp@m.ie@i.nosp@m.nria..nosp@m.fr

Michel Rottleuthner miche.nosp@m.l.ro.nosp@m.ttleu.nosp@m.thne.nosp@m.r@haw.nosp@m.-ham.nosp@m.burg..nosp@m.de

Francisco Molina franc.nosp@m.isco.nosp@m..moli.nosp@m.na@i.nosp@m.nria..nosp@m.cl

Definition in file periph_conf.h.

#include "periph_cpu.h"
#include "clk_conf.h"
#include "cfg_i2c1_pb8_pb9.h"
#include "cfg_rtt_default.h"
#include "cfg_timer_tim2.h"

Include dependency graph for periph_conf.h:

Go to the source code of this file.

#define	CONFIG_BOARD_HAS_LSE   1

UART configuration
#define	UART_0_ISR   (isr_usart2)
#define	UART_1_ISR   (isr_usart3)
#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	ADC_NUMOF   ARRAY_SIZE(adc_config)
	Number of ADC devices.
#define	VBAT_ADC   ADC_LINE(6)
	VBAT ADC line.
static const adc_conf_t	adc_config []
	ADC configuration.

Macro Definition Documentation

ADC_NUMOF

#define ADC_NUMOF   ARRAY_SIZE(adc_config)

Number of ADC devices.

Definition at line 165 of file periph_conf.h.

CONFIG_BOARD_HAS_LSE

#define CONFIG_BOARD_HAS_LSE   1

Definition at line 30 of file periph_conf.h.

PWM_NUMOF

#define PWM_NUMOF   ARRAY_SIZE(pwm_config)

Definition at line 97 of file periph_conf.h.

SPI_NUMOF

#define SPI_NUMOF   ARRAY_SIZE(spi_config)

Definition at line 120 of file periph_conf.h.

UART_0_ISR

#define UART_0_ISR   (isr_usart2)

Definition at line 74 of file periph_conf.h.

UART_1_ISR

#define UART_1_ISR   (isr_usart3)

Definition at line 75 of file periph_conf.h.

UART_NUMOF

#define UART_NUMOF   ARRAY_SIZE(uart_config)

Definition at line 77 of file periph_conf.h.

VBAT_ADC

#define VBAT_ADC   ADC_LINE(6)

VBAT ADC line.

Definition at line 170 of file periph_conf.h.

Variable Documentation

adc_config

const adc_conf_t adc_config[]

static

Initial value:

= {
    { .pin = GPIO_PIN(PORT_A, 0), .dev = 0, .chan =  5 }, 
    { .pin = GPIO_PIN(PORT_A, 1), .dev = 0, .chan =  6 }, 
    { .pin = GPIO_PIN(PORT_A, 4), .dev = 0, .chan =  9 }, 
    { .pin = GPIO_PIN(PORT_B, 0), .dev = 0, .chan = 15 }, 
    { .pin = GPIO_PIN(PORT_C, 1), .dev = 0, .chan =  2 }, 
    { .pin = GPIO_PIN(PORT_C, 0), .dev = 0, .chan =  1 }, 
    { .pin = GPIO_UNDEF, .dev = 0, .chan = 18 },
}

ADC configuration.

Note that we do not configure all ADC channels, and not in the STM32L452RE 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-L452RE this information is in board manual, Table 22, page 51, or STM32L452RE MCU datasheet, Table 16, page 63.

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 STM32L452RE more information is provided in MCU datasheet, in section 3.15.3 - Vbat battery voltage monitoring, page 40.

Definition at line 152 of file periph_conf.h.

pwm_config

const pwm_conf_t pwm_config[]

static

Initial value:

= {
    {
        .dev      = TIM3,
        .rcc_mask = RCC_APB1ENR1_TIM3EN,
        .chan     = { { .pin = GPIO_PIN(PORT_B, 4), .cc_chan = 0 },
                      { .pin = GPIO_PIN(PORT_C, 7), .cc_chan = 1},
                      { .pin = GPIO_PIN(PORT_C, 8), .cc_chan = 2},
                      { .pin = GPIO_PIN(PORT_C, 9), .cc_chan = 3} },
        .af       = GPIO_AF2,
        .bus      = APB1
    },
}

Definition at line 84 of file periph_conf.h.

spi_config

const spi_conf_t spi_config[]

static

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
    },
}

Definition at line 104 of file periph_conf.h.

uart_config

const uart_conf_t uart_config[]

static

Initial value:

= {
    {
        .dev        = USART2,
        .rcc_mask   = RCC_APB1ENR1_USART2EN,
        .rx_pin     = GPIO_PIN(PORT_A, 3),
        .tx_pin     = GPIO_PIN(PORT_A, 2),
        .rx_af      = GPIO_AF7,
        .tx_af      = GPIO_AF7,
        .bus        = APB1,
        .irqn       = USART2_IRQn,
        .type       = STM32_USART,
        .clk_src    = 0, 
    },
    {
        .dev        = USART3,
        .rcc_mask   = RCC_APB1ENR1_USART3EN,
        .rx_pin     = GPIO_PIN(PORT_C, 11),
        .tx_pin     = GPIO_PIN(PORT_C, 10),
        .rx_af      = GPIO_AF7,
        .tx_af      = GPIO_AF7,
        .bus        = APB1,
        .irqn       = USART3_IRQn,
        .type       = STM32_USART,
        .clk_src    = 0, 
    }
}

Definition at line 47 of file periph_conf.h.